Please help me I’m so confused

Answer:

11

Step-by-step explanation:

just put the values in for the variables

5(3)(1) - 4(1)

15(1) - 4(1)

15 - 4

11

(Brainliest pleaseee)

Answer:

  y = 2

Step-by-step explanation:

PQ is a diameter, so arc PQ has a central angle of 180°. Inscribed angle PRQ has a measure half that, or 90°. (An inscribed triangle with one side a diameter is a right triangle.)

Then you can write ...

  53y -16 = 90

  53y = 106 . . . . . add 16

  y = 106/53 = 2 . . . . divide by the coefficient of y

y = 2

Answer:

59.05% probability that all troubles will be repaired in the same day

Step-by-step explanation:

For each trouble, there are only two possible outcomes. Either it can be repaired on the same day, or it cannot. The probability of a trouble being repaired on the same day is independent of other troubles. So we use the binomial probability distribution to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]

In which [tex]C_{n,x}[/tex] is the number of different combinations of x objects from a set of n elements, given by the following formula.

[tex]C_{n,x} = \frac{n!}{x!(n-x)!}[/tex]

And p is the probability of X happening.

Suppose that past data indicates that the probability is 0.9 that troubles in residential can be repaired in the same day

This means that [tex]p = 0.9[/tex]

For the first five troubles reported on a given day. What is the probability that all troubles will be repaired in the same day

This is P(X = 5) when n = 5. Then

[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]

[tex]P(X = 5) = C_{5,5}.(0.9)^{5}.(0.1)^{0} = 0.5905[/tex]

59.05% probability that all troubles will be repaired in the same day

Answer:I believe it would be 5/12

Step-by-step explanation:

You add all of them up then since it's 5 grapes and in total there is 12 fruit snacks. It should be 5 grapes of 12 fruit snacks in the bag.

Answer:

1  7/10

Step-by-step explanation:

Your Welcome :)

Answer:

1 7/10

Step-by-step explanation:

17/10

To find the mixed number, we have to see how many times 10 goes into 17. (Only whole numbers)

17➡1*10 Remainder 7

Since there is a remainder seven we can put 7/10. Since 10 went once into 17 we can say the anwser is 1 7/10

Answer:

1310720

Step-by-step explanation:

Find out the frist part "4 to the square root of 81"  262144

then times it by 5

to get 1310720

Answer:

68°

Step-by-step explanation:

Angles 1 and 5 are corresponding angles on parallel lines, hence they are equal

Answer:

B.

Step-by-step explanation:

Answer:

3 mi

Step-by-step explanation:

There are three squares with side a

The area of a square is s^2 where s is the side length

A of the square is a^2

We have three of them so add the areas together

a^2+a^2+a^2 = 3a^2

This is equal to 27

3a^2 = 27

Divide each side by 3

3/3a^2 = 27/3

a^2 = 9

Take the square root of each side

sqrt(a^2) = sqrt(9)

a = 3

Answer:

YES,30

Step-by-step explanation:

Answer:

You add another Frozen yogurt...

Answer:

You just add it again or multiply it by 2.

Step-by-step explanation:

For example, if the frozen yogurt cost $3.50, you would add it again or multiply it by 2. 3.50 + 3.50 = $7.00

Answer:-1

Step-by-step explanation:

-10+z-1=7z-5

Collect like terms

7z-z=-10-1+5

6z=-6

Divide both sides by 6

6z/6=-6/6

z=-1

Answer:

34% of lightbulb replacement requests numbering between 47 and 52

Step-by-step explanation:

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:

Mean = 52

Standard deviation = 5

Between 47 and 52:

52 is the mean and 47 is one standard deviation below the mean.

By the Empirical Rule, 68% of the measures are within 1 standard deviation of the mean.

Since the normal distribution is symmetric, of those, 34% are within 1 standard deviation below the mean and the mean(47 and 52) and 34% are within the mean and one standard deviation above the mean(52 and 57).

So

34% of lightbulb replacement requests numbering between 47 and 52

Answer:

b

Step-by-step explanation:

Answer:

x=417.6

Step-by-step explanation:

Let's solve your equation step-by-step.

0.5x+78.2=287

Step 1: Subtract 78.2 from both sides.

0.5x+78.2−78.2=287−78.2

0.5x=208.8

Step 2: Divide both sides by 0.5.

0.5x   divided by 0.5

208.08 divided by 0.5

Answer:

The 4 t h term is   f(4)   = 143

Step-by-step explanation:

Explanation:-

Given  function f(1) = -4

Given 'nth' term is  f(n) = -3f(n-1) +5

Put n =2         f(2) = -3 f(2-1) +5

                             = -3 f(1) +5

                             = -3 (-4) +5

                             = 12 +5

                       f(2) = 17

put n= 3      

                         f(n) = -3f(n-1) +5  

                        f(3) = -3 f(3-1) +5

                            = -3f(2) +5

                           = -3(17) +5

                           = -51+5

                      f(3) = -46

Put n=4

                  f(n) = -3f(n-1) +5

                 f(4)  = -3f(4-1) +5

                 f(4)  = -3f(3)+5

                f(4)   = -3(-46)+5

                f(4)   = 138 +5

                f(4)   = 143

Final answer:-

The 4 t h term is   f(4)   = 143

Answer:

The value of the standardized test statistic for this significance test is -1.25.

Step-by-step explanation:

We are given that in a recent poll, 30 percent of adults said they wanted to "cut down or be free of gluten".

The researcher conducts a survey of a random sample of 25 students at her university and five of them say they want to at least reduce gluten.

Let p = population proportion of students wanting to reduce gluten at the university.

So, Null Hypothesis, [tex]H_0[/tex] : p = 30%      {means that the proportion wanting to reduce gluten at the university is the same as for all adults}

Alternate Hypothesis, [tex]H_A[/tex] : p < 30%     {means that a smaller proportion of students would say they want to reduce or be free of gluten}

The test statistics that would be used here One-sample z test for proportions;

                           T.S. =  [tex]\frac{\hat p-p}{\sqrt\frac{\hat p(1-\hat p)}{n} {} }[/tex]  ~ N(0,1)

where, [tex]\hat p[/tex] = sample proportion of students who would say they want to reduce or be free of gluten = [tex]\frac{5}{25}[/tex] = 0.20

            n = sample of students taken = 25

So, the test statistics  =  [tex]\frac{0.20-0.30}{\sqrt\frac{0.20(1-0.20)}{25} {} }[/tex]

                                     =  -1.25

The value of standardized z test statistic is -1.25.

Using the z-distribution, it is found that the value of the standardized test statistic for this significance test is:

D) –1.091

At the null hypothesis, we test if the proportion is of 0.3, that is:

[tex]H_0: p = 0.3[/tex]

At the alternative hypothesis, we test if the proportion is of less than 0.3, that is:

[tex]H_1: p < 0.3[/tex]

The test statistic is given by:

[tex]z = \frac{\overline{p} - p}{\sqrt{\frac{p(1-p)}{n}}}[/tex]

In which:

For this problem, the parameters are:

[tex]p = 0.3, n = 25, \overline{p} = \frac{5}{25} = 0.2[/tex]

Hence, the value of the test statistic is:

[tex]z = \frac{\overline{p} - p}{\sqrt{\frac{p(1-p)}{n}}}[/tex]

[tex]z = \frac{0.2 - 0.3}{\sqrt{\frac{0.3(0.7)}{25}}}[/tex]

[tex]z = -1.091[/tex]

A similar problem is given at https://brainly.com/question/24166849

Answer:

you need Jesus lol :)

Step-by-step explanation:

.....

Answer:

For maximum area: Its a square of dimensions 7.25 * 7.25.

Step-by-step explanation:

We can use calculus to solve this:

Let the length of the rectangle be L and the width be W then we have

2L + 2W = 29

L + W = 14.5

W = 14.5 - L

Area = WL

A = L(14.5 - L)

A = 14.5L - L^2

We need this to be a maximum.

Finding the derivative:

dA/dW = 14.5 - 2L = 0   for a maximum

2L = 14.5

L = 7.25

Also W = 14.5 - L

= 14.5 - 7.25 = 7.25.

So the dimensions for maximum area are 7.25 * 7.25.

The  figure is a SQUARE.

The perimeter of a rectangle, is the sum of its side lengths.

The rectangle that has the maximum area when the length is 7.25 and the width is 7.25

The perimeter is given as:

[tex]\mathbf{P = 29}[/tex]

Let the dimensions be l and w.

So, we have:

[tex]\mathbf{2( l + w) = 29}[/tex]

Divide both sides by 2

[tex]\mathbf{l + w = 14.5}[/tex]

Make l the subject

[tex]\mathbf{l = 14.5 - w}[/tex]

The area of a rectangle is:

[tex]\mathbf{A = lw}[/tex]

Substitute [tex]\mathbf{l = 14.5 - w}[/tex]

[tex]\mathbf{A = (14.5 - w)w}[/tex]

Open brackets

[tex]\mathbf{A = 14.5w - w^2}[/tex]

Differentiate

[tex]\mathbf{A' = 14.5 - 2w}[/tex]

Set to 0

[tex]\mathbf{14.5 - 2w = 0}[/tex]

Collect like terms

[tex]\mathbf{2w = 14.5}[/tex]

Divide both sides by 2

[tex]\mathbf{w = 7.25}[/tex]

Recall that: [tex]\mathbf{l = 14.5 - w}[/tex]

So, we have:

[tex]\mathbf{l = 14.5 - 7.25 = 7.25}[/tex]

Hence, the rectangle that has the maximum area when the length is 7.25 and the width is 7.25

Read more about maximum areas at:

https://brainly.com/question/11906003

Answer:

0.907

Step-by-step explanation:

0.000 thousandths place

Answer:

9.0 x 10⁶

Step-by-step explanation:

if your looking for 900,000

Answer:

[tex]144 $ Square feet[/tex]

Step-by-step explanation:

The given triangular prism comprises of two equal right triangles and three rectangles.

The Surface Area of the Prism

=Area of Two Triangles + Area of Three Rectangles

[tex]=2(0.5X6X8)+(6X4)+(10X4)+(8X4)\\=48+24+40+32\\=144 $ Square feet[/tex]

Answer: 144

Step-by-step explanation:32+24+4-+48=144

Answer:

100

Step-by-step explanation:

10 times 10=100

Answer: 100

Step-by-step explanation: The 2 in this problem means that we are going to multiply 10 twice in order to find the answer.

When we multiply a number by itself, it's called squaring.

So any number squared is that number times itself.

So 10² is just 10 · 10 or 100.

solid form

Step-by-step explanation:

it will not loose shape because it is in solid form

Answer:

It freezes it self in the solid state

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

Correct systems of linear equations which represent the two lines are,

a. x=3, y=6

e. y= x + 3, y= 2x

Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.

Given that;

There are two lines are graphed on the same coordinate plane.

And, the lines only intersect at the point (3,6).

Now, We know that;

When Point (3, 6) is lies on line then it satisfy the equation of lines.

Hence, By options;

a. x=3, y=6

Clearly, Point (3, 6) is lies on line.

e. y= x + 3, y= 2x

y = x + 3

y = 3 + 3

y = 6

Hence, Point (3, 6) is lies on line.

Thus, Correct systems of linear equations which represent the two lines are,

a. x=3, y=6

e. y= x + 3, y= 2x

Learn more about the mathematical expression visit:

brainly.com/question/1859113

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complete question:

Two lines are graphed on the same coordinate plane.the lines only intersect at the point (3,6).which of these systems of linear equations could represent the two lines?

a. x=3

y=6

b. x=6+y

y=3+x

c. y=3x-3

y= x-1

d. x=3+y

y=6+x

e. y= x+3

y= 2x

Answer:

64

Step-by-step explanation:

Answer:

72.66 in³

Step-by-step explanation:

The volume of a cylinder of radius r and height h is given by V = πr²h.

Here we have  V = πr²h = π([2.8]/2 in)²(11.8 in) = π(1.96 in²)(11.8 in) = 23.1 π in³, or approximately 72.66 in³

Answer:

The equation for the height of the penny in function of time is:

[tex]h(t)=1451-16t^2[/tex]

After 7 seconds, the penny will be at a height of 667 feet.

Step-by-step explanation:

The penny will have a free fall.

The initial velocity is zero, and the initial height is h(0)=1,451.

The acceleration will be the gravity, that has a value g=32 ft/s^2.

Then, we can model this starting by the speed:

[tex]dv/dt=-g\\\\v(t)=v_0-gt=-gt[/tex]

Then, the height becomes:

[tex]dh/dt=v(t)=-gt\\\\h(t)=h_0-\dfrac{gt^2}{2}=1451-\dfrac{32}{2}t^2\\\\\\h(t)=1451-16t^2[/tex]

The approximate height of the penny after 7 seconds can be calculated as:

[tex]h(7)=1451-16(7^2)=1451-16*49=1451-784=667[/tex]

After 7 seconds, the penny will be at a height of 667 feet.

Answer:

76

Step-by-step explanation:

First get the equation into the form

ax^2 +bx+c =0

3x^2-10x+2=-2+2

3x^2-10x+2 =0

The discriminant is

b^2 -4ac  where a=3  b = -10 c =2

(-10)^2 - 4(3)(2)

100 - 24

76

Answer:

Step-by-step explanation:

Car 1

Price of the car  $25,329

Add Interest    ($25,329 * 4.25% / 12 * 12 * 5) = $5382.41

Total amount to be paid $30711.41

X               Y            

0              30711.41

1               30199.55

2              29689.69

3              29175.83

4              28663.97

5              28152.11

6              27640.25

7              27128.39

8              26616.53

9              26104.67

10             25592.81

11               25080.95

12              24569.09

Equation

Y = 30711.41 - 511.86 * x

Car 2

Price of the car                                            $22,464

Less down payment                                   - $2500

Amount to be financed                                $19964

Add interest (19964 * 3.78% / 12 * 12 * 5)     $3773.20

Total amount to be paid                                 $23737.20

X                             Y                

0                       23737.20

1                        23341.58

2                       22945.96

3                      22550.34

4                     22154.72

5                      21759.10

6                     21363.48

7                     20967.86

8                    20572.24

9                   20176.62

10                 19781.00

11                  19385.38

12                 18989.76

Equation

Y = 23737.20 - 395.62 * x

b) Determine the  rate of change, or slope, of each line and state the y-intercepts

                                       Car 1                  Car 2

Slope of each line          511.86                395.62

Y intercept                      30711.41             23737.20

c) Using your generated graph for the first situation, describe how the unit rate of the amount of money paid monthly is related to the slope of the line.

Ans; The unit rate is same because in both payments are made monthly

d) Determine if each relationship represented in the table, graph, and equation represents a proportional or non- proportional situation

Ans; Each relationship represented in the table , graph and equation is not proportional because it doesn't cross the origin.

15 songs x 1.25 per song = $18.75 per month for songs.

18.75 per month x 6 months = $112.50

112.50 + 24.00 = $136.50 total