Which of the following choices will simplify 7 − 5(3)2 ?

Answers

Answer 1

Answer:-23

Step-by-step explanation:

7-5(3)2

7-5x3x2

7-30=-23


Related Questions

Franco freezes the vegetables he grows in the summer so he can eat them all year long. He packs the vegetables into cube-shaped boxes that each have a volume of one cubic foot. Then, he places the boxes into a freezer that is shaped like a rectangular prism. The bottom of the freezer can be completely covered by a layer of 6 boxes. If the volume of the freezer is 18 cubic feet, what is its height?

Answers

Answer:

  3 feet

Step-by-step explanation:

If there are 6 boxes in each layer, there are 3 layers to have a total of 18 boxes, each of which is 1 cubic foot.

Three layers of boxes that are 1 ft high will be 3 ft high.

The height of the freezer space is 3 feet.

Three cube-shaped boxes are stacked one above the other. The volumes of two of the boxes are 1,331 cubic meters each, and the volume of the third box is 729 cubic meters. What is the height of the stacked boxes in meters?

A.
19
B.
29
C.
30
D.
31

Answers

Answer:

  D.  31

Step-by-step explanation:

The edge dimension of a cube is the cube root of the volume. For the two boxes that are 1331 m³, the height is ...

  ∛(1331 m³) = 11 m

For the box that is 729 m³, the height is ...

  ∛(729 m³) = 9 m

Then the total height of the stack of boxes is ...

  11 m + 11 m + 9 m = 31 m

Answer:

31

Step-by-step explanation:

I took the test on Edmentum, have a good day hope it helps :)

Which unit would be best for measuring the thickness of a coin?
kilometer
()) centimeter
meter
)) milli​

Answers

Answer:

Since 1 mm = . 03937 inches, mm would seem to be the units appropriate for defining the thickness of a coin measuring 2 units.

Step-by-step explanation:

Giving brainliest to CORRECT answer.

Answers

b i think .. i’m not sure

Answer:

A. 2

Step-by-step explanation:

[tex] y = 16x^2 - 8x + 1[/tex] is a quadratic function, hence on solving it will give two zeros, therefore graph of the function will intersect x axis in two points.

Anyone know the answer?

Answers

Answer:11 25/64 In^3

Step-by-step explanation:

Length =2 1/4

Volume of cube=L x L x L

Volume=2 1/4 x 2 1/4 x 2 1/4

Volume=9/4 x 9/4 x 9/4

Volume=(9x9x9) ➗ (4x4x4)

Volume=729 ➗ 64

Volume=11 25/64

if f(x)=-x^2 and g(x) = -x^2+4x+5 what is the product

Answers

Answer:

[tex]x^{4}[/tex] - 4x³ - 5x²

Step-by-step explanation:

-x²(-x² + 4x + 5)         Distribute

[tex]x^{4}[/tex] - 4x³ - 5x²

If this answer is correct, please make me Brainliest!

Six minus a number divided by 3 equals 8. What is the number?

Answers

Answer:

-18

Step-by-step explanation:

let n be the number

(6-n)/3 = 8

6-n = 24

6-24 = n

-18 = n

Answer:

The number is 30

Step-by-step explanation:

Six minus a number divided by 3 equals 8

x-6/3 = 8

x-6 = 8*3

x = 24 +6

x = 30

Lia has a dog and a cat the pets weigh 16 pounds The dog weighs 3 times as much as the cat

Answers

Answer:

The weight of the dog is 12 pounds and the weight of the cat is 4 pounds.

Step-by-step explanation:

Let d represent the weight of the dog. Let c represent the weight of the cat.

Let's make a system of equations.

d+c=16

d=3c

We can use subsitution.

3c+c=16

4c=16

c=4

We can subsitute back into one of the two equations to find the weight of the dog.

d=3c

d=3(4)

d=12

The weight of the dog is 12 pounds and the weight of the cat is 4 pounds.

Needs help with this

Answers

Answer:

m<1 = 50°

m<2 = 130°

m<3 = 50°

m<4 = 130°

m<5 = 50°

m<6 = 130°

m<7 = 50°

m<8 = 130°

Step-by-step explanation:

Angle 4 & Angle 2 are congruent angles because they are diagonal from each other, this lets us set m<4 = m<2.

Then solve for x.

2x-10 = x+60

x-10 = 60

x = 70

Use x to find m<4 or m<2 (doesn't matter which b/c they are equal).

m<2 = (70)+60

m<2 = 130°

Angles 2, 4, 6 & 8 are congruent, so they will all have be 130°.

Angles 1 & 2 create a straight line (180°).

Find m<1 by subtracting 130° from 180°.

180-130 = 50

Angles 1, 3, 5 & 7 are also congruent, so they will all have be 50°.

The scores on one portion of a standardized test are approximately Normally distributed, N(572, 51). a. Use the 68-95-99.7 rule to estimate the range of scores that includes the middle 95% of these test scores. b. Use technology to estimate the range of scores that includes the middle 90% of these test scores.

Answers

Answer:

a) The range of scores that includes the middle 95% of these test scores is between 470 and 674.

b) The range of scores that includes the middle 90% of these test scores is between 488.1 and 655.9.

Step-by-step explanation:

68-95-99.7 rule:

The Empirical Rule states that, for a normally distributed random variable:

68% of the measures are within 1 standard deviation of the mean.

95% of the measures are within 2 standard deviation of the mean.

99.7% of the measures are within 3 standard deviations of the mean.

In this problem, we have that:

Z-score:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the zscore of a measure X is given by:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this question:

Mean [tex]\mu = 572[/tex], standard deviation [tex]\sigma = 51[/tex]

a. Use the 68-95-99.7 rule to estimate the range of scores that includes the middle 95% of these test scores.

By the 68-95-99.7 rule, within 2 standard deviations of the mean.

572 - 2*51 = 470

572 + 2*51 = 674

The range of scores that includes the middle 95% of these test scores is between 470 and 674.

b. Use technology to estimate the range of scores that includes the middle 90% of these test scores.

Using the z-score formula.

Between these following percentiles:

50 - (90/2) = 5th percentile

50 + (90/2) = 95th percentile.

5th percentile.

X when Z has a pvalue of 0.05. So when X when Z = -1.645.

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

[tex]-1.645 = \frac{X - 572}{51}[/tex]

[tex]X - 572 = -1.645*51[/tex]

[tex]X = 488.1[/tex]

95th percentile.

X when Z has a pvalue of 0.95. So when X when Z = 1.645.

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

[tex]1.645 = \frac{X - 572}{51}[/tex]

[tex]X - 572 = 1.645*51[/tex]

[tex]X = 655.9[/tex]

The range of scores that includes the middle 90% of these test scores is between 488.1 and 655.9.

Which images below are scalene triangles?


Triangles A and D
Triangles B and D
Triangles A and C
Triangles C and D

Answers

Answer: C & D

Step-by-step explanation:

I took the test and got it right (:

Hope this helps

A scalene triangle has NO equal sides A has 3 equal sides and B has 2 equal sides, so that means Triangles C & D are your answer!

PLEASE HELP!!! WILL MARK AS BRAINLIEST!!!

A colony of 300 bacteria doubles in size every 22 minutes can be represented by the exponential function y=300(2)x. If you want to know how many bacteria will be present about 66 minutes, what should you plug in for x?

Answers

Answer:

[tex] y = 300 (2)^x[/tex]

Where x represent the number of period of times of 22 minutes. If we want to know the value of the population after 66 minutes we need to find the value of x on this way:

[tex] x = 66 minutes *\frac{1period}{22 minutes}= 3[/tex]

So then we need to replace the value of x =3 and we got:

[tex] y= 300 (2)^3 = 2400[/tex]

Step-by-step explanation:

For this case we have the following function:

[tex] y = 300 (2)^x[/tex]

Where x represent the number of period of times of 22 minutes. If we want to know the value of the population after 66 minutes we need to find the value of x on this way:

[tex] x = 66 minutes *\frac{1period}{22 minutes}= 3[/tex]

So then we need to replace the value of x =3 and we got:

[tex] y= 300 (2)^3 = 2400[/tex]

What is the value of a in the equation below? 2a + 3 = 4a + 5
Please show work :)

Answers

The answer is .75=a

2a+3=4a+5
-2a -2a
3 = 4a+5
-5 -5
3 = 4a
3/4 4/4
.75 = a

What is the area of a circle with a radius of 2.1cm? Use 3.14 for π.

Answers

Answer: I got's you lol

A≈13.85cm²

And the radius is 2.1

Step-by-step explanation:

Hope this helps let me know :)

Answer:

A= 13.8474

Step-by-step explanation:

The formula for the area of a circle is A= πr^2 (pi times r, or radius, squared).

So if you insert the values into the formula you have....

A= 3.14(2.1 cm)^2

You can use a calculator from there to get....

A= 13.8474

A company surveyed 2400 men where 1248 of the men identified themselves as the primary grocery shopper in their household. ​a) Estimate the percentage of all males who identify themselves as the primary grocery shopper. Use a 98​% confidence interval. Check the conditions first. ​b) A grocery store owner believed that only 43​% of men are the primary grocery shopper for their​ family, and targets his advertising accordingly. He wishes to conduct a hypothesis test to see if the fraction is in fact higher than 43​%. What does your confidence interval​ indicate? Explain. ​c) What is the level of significance of this​ test? Explain.

Answers

Answer:

a) With a confidence level of 98%, the percentage of all males who identify themselves as the primary grocery shopper are between 0.4962 and 0.5438.

b) The lower limit of the confidence interval is higher that 0.43, so if he conduct a hypothesis test, he will find that the data shows evidence to said that the fraction is higher than 43%.

c) [tex]\alpha =1-0.98=0.02[/tex]

Step-by-step explanation:

If np' and n(1-p') are higher than 5, a confidence interval for the proportion is calculated as:

[tex]p'-z_{\alpha/2}\sqrt{\frac{p'(1-p')}{n} }\leq p\leq p'+z_{\alpha/2}\sqrt{\frac{p'(1-p')}{n} }[/tex]

Where p' is the proportion of the sample, n is the size of the sample, p is the proportion of the population and [tex]z_{\alpha/2}[/tex] is the z-value that let a probability of [tex]\alpha/2[/tex] on the right tail.

Then, a 98% confidence interval for the percentage of all males who identify themselves as the primary grocery shopper can be calculated replacing p' by 0.52, n by 2400, [tex]\alpha[/tex] by 0.02 and [tex]z_{\alpha/2}[/tex] by 2.33

Where p' and [tex]\alpha[/tex] are calculated as:

[tex]p' = \frac{1248}{2400}=0.52\\\alpha =1-0.98=0.02[/tex]

So, replacing the values we get:

[tex]0.52-2.33\sqrt{\frac{0.52(1-0.52)}{2400} }\leq p\leq 0.52+2.33\sqrt{\frac{0.52(1-0.52)}{2400} }\\0.52-0.0238\leq p\leq 0.52+0.0238\\0.4962\leq p\leq 0.5438[/tex]

With a confidence level of 98%, the percentage of all males who identify themselves as the primary grocery shopper are between 0.4962 and 0.5438.

The lower limit of the confidence interval is higher that 0.43, so if he conduct a hypothesis test, he will find that the data shows evidence to said that the fraction is higher than 43%.

Finally, the level of significance is the probability to reject the null hypothesis given that the null hypothesis is true. It is also the complement of the level of confidence. So, if we create a 98% confidence interval, the level of confidence [tex]1-\alpha[/tex] is equal to 98%

It means the the level of significance [tex]\alpha[/tex] is:

[tex]\alpha =1-0.98=0.02[/tex]

Which two whole numbers is √20 between?

Answers

Answer:4 and 5

Step-by-step explanation:

√(20) is approximately 4.5 so it is between 4 and 5


Plz answer BRAINLIEST Choose the statement that is true of both triangles.

Answers

9514 1404 393

Answer:

  A. Side lengths of 4 units and 2 units and a nonincluded angle of 30°

Step-by-step explanation:

Both triangles have sides marked 2 units and 4 units, but the angle is not between them. The angle is opposite the short side in one triangle (which will be a right triangle), and opposite the long side in the other triangle (which will be an obtuse triangle). The sides and angles of the two triangles will not have the same measures, and neither will have an angle of 100°.

The first description is appropriate:

  Side lengths of 4 units and 2 units and a nonincluded angle of 30°

A calzone is divided into 24 equal pieces. Sophie and Glenn each ate one-fourth
of the calzone on Saturday. The next​ day, Glenn ate one-sixth
of the calzone that was leftover. How many of the pieces of the original calzone ​remain? Explain your reasoning.

Answers

Answer:

10 pieces

Step-by-step explanation:

Total no. of pieces of calzone = 24

No of pieces of calzone eaten by sophie = 1/4 of Total no. of pieces of calzone  = 1/4 of 24 = (1/4)*24= 6 pieces.

No of pieces of calzone eaten by Glenn = 1/4 of Total no. of pieces of calzone  = 1/4 of 24 = (1/4)*24= 6 pieces.

Total no of pieces eaten by both of them on saturday = 12.

No of pieces of calzone left = 24-12 = 12

_______________________________________________

No of pieces of calzone eaten by Glenn on next day = 1/6 of Total no. of pieces of calzone  left= 1/6 of 12 = (1/6)*12= 2 pieces

No of pieces of calzone left now after Glenn ate 2 of them = 12-2 = 10.

Thus 10 pieces  of original calzone are left  .

Suppose a 3x6 coefficient matrix for a system has three pivot columns. Is the system​ consistent? Why or why​ not? Choose the correct answer below. A. There is at least one row of the coefficient matrix that does not have a pivot position. This means the augmented​ matrix, which will have seven ​columns, could have a row of the form [Start 1 By 7 Matrix 1st Row 1st Column 0 2nd Column 0 3rd Column 0 4st Column 0 5st Column 0 6st Column 0 7st Column 1 EndMatrix ]​, so the system could be inconsistent. B. There is at least one row of the coefficient matrix that does not have a pivot position. This means the augmented​ matrix, which will have seven ​columns, must have a row of the form [Start 1 By 7 Matrix 1st Row 1st Column 0 2nd Column 0 3rd Column 0 4st Column 0 5st Column 0 6st Column 0 7st Column 1 EndMatrix ]​, so the system is inconsistent. C. There is a pivot position in each row of the coefficient matrix. The augmented matrix will have seven columns and will not have a row of the form [Start 1 By 7 Matrix 1st Row 1st Column 0 2nd Column 0 3rd Column 0 4st Column 0 5st Column 0 6st Column 0 7st Column 1 EndMatrix ]​, so the system is consiste

Answers

Answer:

Check the explanation

Step-by-step explanation:

All the 5 rows of the coefficient matrix (since it is of order 5×8) will have a pivot position. The augmented matrix obtained by adding a last column of constant terms to the 8 columns of the coefficient matrix will have nine columns and will not have a row of the form [0 0 0 0 0 0 0 0 1]. So the system is consistent.

3 1/3 CUPS OF FLOUR IS NEEDED TO MAKE A PAN OF MUFFINS. 2 1/3 CUPS OF FLOUR IS NEEDED FOR A LOAF OF BREAD. HOW MUCH MOE FLOUR IS NEEDED FOR THE PAN OF MUFFINS? DRAW A TAPE DIAGRAM?

Answers

Answer:

1 cup

Step-by-step explanation:

3 1/3 - 2 1/3 = 1 cup

please answer this correctly I have to finish this today as soon as possible


Estimate the measure of this angle within 10°.

Answers

Obtuse angle
maybe 130degrees


130 cars are parked in a parking lot. Each row holds 8 cars. If every row is full except for the last, how many cars are in the last row?

Answers

Answer:

2 are in the last row

solve for the coefficient -5=a(0-2)(0-3)(0-5)

Answers

Answer:

a = 1/6

Step-by-step explanation:

-5=a(0-2)(0-3)(0-5)

Simplify

-5=a(-2)(-3)(-5)

-5 = a(-30)

Divide each side by -30

-5/-30 = -30a/-30

1/6 =a

Answer:

1/6

Step-by-step explanation:

Complete A and B for 5-8 points.

Answers

Answer:

a) 4 hours

b) 11 am

Step-by-step explanation:

So say the number of hours is x

a) 72 + 6x = 96

6x = 24

x = 4

b) 7am + 4 hours = 11am

The diameter of a golf ball is about four centimeters which of these is closest to the volume of a golf ball?

Answers

Answer:

33.51

Step-by-step explanation:

A paper describes a study of the use of MRI (Magnetic Resonance Imaging) exams in the diagnosis of breast cancer. The purpose of the study was to determine if MRI exams do a better job than mammograms of determining if women who have recently been diagnosed with cancer In one breast have cancer in the other breast. The study participants were 980 women who had been diagnosed with cancer in one breast and for whom a mammogram did not detect cancer in the other breast.
These women had an MRI exam of the other breast, and 131 of those exams indicated possible cancer. After undergoing biopsies, it was determined that 40 of the 131 did in fact have cancer in the other breast, whereas 91 did not. The women were all followed for one year, and two of the women for whom the MRI exam did not indicate cancer in the other breast were subsequently diagnosed with cancer that the MRI did not detect.
Suppose that for women recently diagnosed with cancer In only one breast, the MRI is used to decide between the two "hypotheses.
H0: woman has cancer in the other breast
Ha: woman does not have cancer In the other breast
(Although these are not hypotheses about a population characteristic, this exercise illustrates the definitions of Type I and Type II errors.)
A) One possible error would be deciding that a woman who does have cancer in the other breast Is cancer-free. Is this a Type 1 or a Type II error?
B) There Is a second type of error that is possible In this setting. Describe this error.
A Type II error would be coming to the conclusion that the woman_______cancer in the other breast when in fact she_______cancer in the other breast.

Answers

Answer:

Step-by-step explanation:

A type I error occurs when the null hypothesis is rejected in favor of the alternative hypothesis when the null hypothesis is actually true.

A type II error occurs when the researcher fails to reject the null hypothesis when the null is false.

H0: woman has cancer in the other breast

Ha: woman does not have cancer In the other breast

A) One possible error would be deciding that a woman who does have cancer in the other breast Is cancer-free. Is this a Type 1 or a Type II error?

This error is a type I error as the patient does have cancer which should warrant failing to reject the null but the null was rejected in favour of the alternative.

A Type II error would be coming to the conclusion that the woman does have cancer in the other breast when in fact she does not have cancer in the other breast.

This is a second type of error that can occur and it is a type II error: failing to reject the null when not true.

Volume of a sphere in terms of π with a radius of 2

Answers

Answer:

33.51

Step-by-step explanation:

You need to use the equation [tex]\frac{4}{3} \pi r[/tex]³.

Hope this helps.

Answer:10.7π

Step-by-step explanation:

radius=r=2

volume of sphere=4/3 x π x r x r x r

Volume of sphere=4/3xπx2x2x2

Volume of sphere=(4xπx2x2x2) ➗ 3

Volume of sphere=32π ➗ 3

Volume of sphere=10.7π

Solve (3x+7)=4x for x

Answers

Answer:

x=7

Step-by-step explanation:

(3x+7)=4x

Subtract 3x from each side

(3x+7) -3x=4x-3x

7 = x

Whats is the 6+8-16

Answers

Answer:

-2

Step-by-step explanation:

6+8 equals 14. 14-16 equals -2

Answer: The importance of learning is that it helps the individual to acquire the necessary skills through learning and knowledge so that he can achieve his set goals. An important fact about learning is that it is a means to improve knowledge and gain skills that will help in reaching specific goals

Step-by-step explanation:

The importance of learning is that it helps the individual to acquire the necessary skills through learning and knowledge so that he can achieve his set goals. An important fact about learning is that it is a means to improve knowledge and gain skills that will help in reaching specific goals

change 5 out of 19 to a percentage

Answers

Answer:

26.3%

Step-by-step explanation:

5 is divided by 19

That answer is then multiplied by 100.

You may round your answer to the nearest whole number.

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Which social problem does Swift most strongly address in his proposal?A. PollutionB. RacismO O OC. Freedom of speechD. Social-class inequality Explain why knowing parts of speech would be helpful to a reader? Ex. Adjective, articles, nouns, pronouns, interjection etc. On April 11 of the current year, Zack Corporation had a market price of $48 per share of common stock. Its par value was $10 per share. For the previous year, Zack paid an annual dividend of $3.90 per share. Zack's gross revenues and net income was $5,000,000 and $2,500,000, respectively. The dividend yield for Zack Corporation would be_____. 8% 0.08% 39% 0.39% Each of the the 11 body systems:A) Are interchangeableB) Depends on others to functionC) Performs a single taskD) Is controlled by the lungs Which expression is equivalent to 105 The blank was the final event that led America into world war one Help anyone? Who knows this 6th grade math 16 A rocket is launched from atop a 101-foot cliff with an initial velocity of 116 fts. Use the vertical motion formulah(t)= -16t squared+ vt +s where v is the initial velocity and s is the starting height, to find how long it take the rocketto hit the ground after it is launched. Round to the nearest hundredth of a second. Decide whether each statement about the excretory system is True or False.T or F. Without excreting waste, toxins would build up in the body. T or F. Sweat is the main way that the body maintains blood pH. T or F. The excretory system prevents dehydration and keeps cells hydrated. T or F Without the excretory system, salts and chemical stay in perfect balance. T or F. The excretory system regulates blood pH. The amount of matter in something is called: Volume mass Manuel had 7.8 grams of pepper. Then he used 0.7 grams of pepper to make some scrambled eggs.how much pepper does Manuel have left Plant species A cannot fight most fungal infections, while plant species B makes a protein that kills many fungi.What is one possible way for humans to engineer species A plants that can produce the fungus-killing protein? What happens when an object with elastic energy is released?It uses kinetic energy to return to its original shapeIt bounces like a ballIt uses potential energy to return to its original shapeIt uses elastic energy to return to its original shape Using the linear combination method, what is the solution to the system of linear equations 7 x minus 2 y = negative 20 and 9 x + 4 y = negative 6? (3, 2) (2, 3) (2, 3) (3, 2) HELPPPP!!!Reeva's family budget is shown. She works 165 hours each month. With the giveninformation, what is the minimum hourly wage she would need to earn to cover her monthly expenses? please answer it i will give brainlist and 30 pointsLabel the structure of the human kidney. Use the grouping method to factor 2x3+ 6x2 - 7x-21 One group that improved education in cities by opening private religiousschools was:O A. Catholic immigrant groups.B. Federal government programs.C. State government programs.O D. Free African Americans.SUBMIT Competition can affect a population size? A. TrueB. False Select the expressions that are equivalent to 6(x + 7).(7 + x) 66x + 42(x + 7)642x + 6