I need much help, I’ve been stuck for days!!!

Answer:

its 1.4:3=7:15

Step-by-step explanation:

you divide 7 by five

Answer:

I believe the correct answer is C

Step-by-step explanation:

if you convert 1/5 into a decimal it would be 0.2

if you convert 1/21 to a decimal it would be 0.4 then you make it a square root it would be 0.6

4.15 is already a decimal so you don't have to do anything to it.

if you turn 21 into a square root the would be 4.5

so if you line all the numbers up from smalllest to lagerst it would look like this

1/5,1/21,21,4.15

so c is the corrcet answer

Answer:

I'd say 20

Step-by-step explanation:

Answer:

I’d say 20 or 25

Step-by-step explanation:

Answer: 100 miles per hour

Step-by-step explanation: Showing Work

This is a fraction equal to

250 miles ÷ 2.5 hours

We want a unit rate where

1 is in the denominator,

so we divide top and bottom by 2.5

250 miles ÷ 2.5

2.5 hours ÷ 2.5

=

100 miles

1 hour

=

100 miles

hour

= 100 miles per hour

Answer:

attracted more to oxygen's nucleus. This makes the hydrogen ends of the

Step-by-step explanation:

Answer:

its parallel

Step-by-step explanation:

sorry the other person did not help you. but i do rsm and i got this question right.

Answer:

So first let's start with Antonio's pizza, we have to pay $17.75 plus $1 per toppings.

Then, we have Papa's pizza, we have to pay $15, plus $2.25 per topping.

How will we find the number of toppings for the same price?

Well, at papa's pizza one topping already $17.25 dollars already. So, lets keep adding. Well, if we get 4 toppings at Antonio's pizza we have to pay $21.75. And if we 3 toppings at Papa's pizza we have to pay $21.75 as well.

So, at Antonio's pizza we have to get 4 toppings and at Papa's pizza we have to get 3 toppings, to be able to pay the same price at both places

SIMPLE EQUATION:

Papa's Pizza: $15 + $6.75 (3 toppings total) = $21.75

Antonio's Pizza: $17.75 + $4 (4 toppings total) = $21.75

Answer:

the second one

Step-by-step explanation:

jus took da test

Answer:

x=2, x=7

Step-by-step explanation:

-3x^2+27x=42

x^2-9x=-14

x^2-9x+14=0

x*(x-2)-7(x-2)=0

(x-2)*(x-7)=0

x-2=0

x-7=0

x=2

x=7

Answer:

You will want to set up the ratio for each and set them equal to each other. Then you can cross multiply to verify if you get the same answer. Another strategy is to set up each ratio and then reduce to lowest terms to see if you get the same fraction.

Brainlist please?

The equation of the axis of symmetry is [tex]\mathbf{x =1}[/tex], the value of a is 2, and the value of c is 1.

The function is given as:

[tex]\mathbf{f(x) = ax^2 -4x - c}[/tex]

Line L is represented as:

[tex]\mathbf{(x,y) = (-1,5)(3,5)}[/tex]

Substitute the above values in: [tex]\mathbf{f(x) = ax^2 -4x - c}[/tex]

So, we have:

[tex]\mathbf{5 = a(-1)^2 - 4(-1) - c}[/tex]

[tex]\mathbf{5 = a(3)^2 - 4(3) - c}[/tex]

Expand [tex]\mathbf{5 = a(-1)^2 - 4(-1) - c}[/tex]

[tex]\mathbf{5 = a + 4 - c}[/tex]

Expand [tex]\mathbf{5 = a(3)^2 - 4(3) - c}[/tex]

[tex]\mathbf{5 = 9a - 12 - c}[/tex]

Subtract [tex]\mathbf{5 = a + 4 - c}[/tex] and [tex]\mathbf{5 = 9a - 12 - c}[/tex]

[tex]\mathbf{5 - 5 = a - 9a + 4 + 12 -c + c}[/tex]

[tex]\mathbf{0 = - 8a + 16}[/tex]

Collect like terms

[tex]\mathbf{8a = 16}[/tex]

Divide both sides by 8

[tex]\mathbf{a = 2}[/tex]

Substitute [tex]\mathbf{a = 2}[/tex] in [tex]\mathbf{5 = a + 4 - c}[/tex]

[tex]\mathbf{5 = 2 + 4 - c}[/tex]

[tex]\mathbf{5 = 6 - c}[/tex]

Subtract 6 from both sides

[tex]\mathbf{-1 = - c}[/tex]

So, we have:

[tex]\mathbf{c = 1}[/tex]

Recall that:

[tex]\mathbf{f(x) = ax^2 -4x - c}[/tex]

Where:

[tex]\mathbf{a = 2}[/tex] and [tex]\mathbf{b = -4}[/tex]

The equation of the axis of symmetry is:

[tex]\mathbf{x = -\frac{b}{2a}}[/tex]

So, we have:

[tex]\mathbf{x = -\frac{-4}{2 \times 2}}[/tex]

[tex]\mathbf{x = -\frac{-4}{4}}[/tex]

[tex]\mathbf{x =1}[/tex]

Hence, the equation of the axis of symmetry is [tex]\mathbf{x =1}[/tex], the value of a is 2, and the value of c is 1.

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Answer: 1/3 pounds

Step-by-step explanation:

Answer:

1/3

Step-by-step explanation:

Answer:

1,000,000,000

Step-by-step explanation:

Answer:

1,000000000

Step-by-step explanation:

10/10000000000 (Divide By 10)

= 1000000000 (Take one 0 away)

Answer:

y=2/3x+600

Step-by-step explanation:

as x goes up by 3, y goes up by 2. So this means the slope is 2/3. also, you add 600 which is the y intercept

Answer:

Step-by-step explanation:

Let the first number = x

Let the second number = x + 9

Let the third number = 4x

Together they make 123

x + x + 9 + 4x = 123              combine the left

6x + 9 = 123                         Subtract 9 from both sides

6x = 123 - 9

6x = 114                                 Divide by 6

x = 114/6

x = 19

=================

First number = 19

Second number = 19 + 9 = 28

Third number = 4*19 = 76

Step-by-step explanation:

right angled triangle......

Answer:

5 1/2 OR 5.5

Step-by-step explanation:

1 1/2 x 3 2/3

= 3/2 x 11/3

= 3 x 11/ 2 x 3

= 33/6

= 33 divided by 3/ 6 divided by 3

= 11/2 = 5 1/2

Answer: 5 1/2

Step-by-step explanation:

1 1/2 = 3/2 and 3 2/3 = 11/3

3 x 11 = 33

2 x 3 = 6

33/6 = 5 1/2

Answer/Step-by-step explanation:

a. To construct a stem-and-leaf plot for the given sample data, 7, 13, 28, 12, 16, 23, 13, 49, 18, 11, 9, 27, 36, 18, 15, 11, 32, 22, 19, 21, first, order the data from the least to the greatest.

7, 9, 11, 11, 12, 13, 13, 15, 16, 18, 18, 19, 21, 22, 23, 27, 28, 32, 36, 49

The plot would like the one shown below:

Stem | Leaf

0 | 7, 9

1 | 1, 1, 2, 3, 3, 5, 6, 8, 8, 9

2 | 2, 3, 7, 8

3 | 2, 36

4 | 9

Key:

13 = 1 | 3

b.

i. Mean = (7 + 9 + 11 + 11 + 12 + 13 + 13 + 15 + 16 + 18 + 18 + 19 + 21 + 22 + 23 + 27 + 28 + 32 + 36 + 49)/20

Mean = 400/20

Mean = 20

ii. Median = average of the 10th and 11th data value

Median = (18 + 18)/2 = 36/2

Median = 18

iii. Range = max value - min value

Range = 49 - 7

Range = 42

iv. Standard deviation for sample data is given as [tex] s = \sqrt{\frac{1}{N-1} \sum_{i=1}^N (x_i - \overline{x})^2} [/tex]

Where,

[tex] \overline{x} = sample mean = 20 [/tex]

[tex] x_i = each value of the sample data [/tex]

N = total number of values in the sample = 20

Let's solve:

First, calculate [tex] (x_i - \overline{x})^2 [/tex] for each data value:

7 => (7 - 20)² = (-13)² = 169

9 => (9 - 20)² = (-11)² = 121

11 => (11 - 20)² = (-9)² = 81

11 => (11 - 20)² = (-9)² = 81

12 => (12 - 20)² = (-8)² = 64

13 => (13 - 20)² = (-7)² = 49

13 => (13 - 20)² = (-7)² = 49

15 => (15 - 20)² = (-5)² = 25

16 => (16 - 20)² = (-4)² = 16

18 => (18 - 20)² = (-2)² = 4

18 => (18 - 20)² = (-2)² = 4

19 => (19 - 20)² = (-1)² = 1

21 => (21 - 20)² = (1)² = 1

22 => (22 - 20)² = (2)² = 4

23 => (23 - 20)² = (3)² = 9

27 => (27 - 20)² = (7)² = 49

28 => (28 - 20)² = (8)² = 64

32 => (32 - 20)² = (12)² = 144

36 => (36 - 20)² = (16)² = 256

49 => (49 - 20)² = (29)² = 841

Next, calculate [tex] \sum_{i=1}^N (x_i - \overline{x})^2 [/tex] by summing all results gotten above:

= 169 + 121 + 81+ 81 + 64 + 49 + 49 + 25 + 16 + 4 + 4 + 1 + 1 + 4 + 9 + 49 + 64 + 144 + 256 + 841

= 2,032

Next, find [tex] \frac{1}{N-1} \sum_{i=1}^N (x_i - \overline{x})^2 [/tex] by dividing the result you have above by (N - 1):

[tex] \frac{2,032}{N - 1} = \frac{2,032}{20 - 1} [/tex]

[tex] \frac{2,032}{19} = 106.947368 [/tex]

Next, calculate [tex] s = \sqrt{\frac{1}{N-1} \sum_{i=1}^N (x_i - \overline{x})^2} [/tex] by finding the square root of the result you have above:

[tex] s = \sqrt{106.947} [/tex]

[tex] s = 10.34 [/tex] (to 2 d.p)

v. Interquartile Range (IQR) = Third Quarter (Q3) - First Quartile (Q1)

Q1 = (12 + 13)/2 = 25/2 = 12.5

Q3 = (23 + 27)/2 = 50/2 = 25

IQR = 25 - 12.5

IQR = 12.5

c. The distribution of the number of horses nominated for each race in the sample is slightly down-skewed. This indicates that most of lower number of horses nominated for each race in the sample chosen are more common. Most of the data values are below the mean value of 20. Also, the median shows the median number of horses selected to be 18, indicating a lower number.

With the distribution having a range value of 42, extreme value such as 49, seem to be an outlier, as it does not reflect the typical number of horses selected in each race, which are mostly lower.

Answer:

6 units

Step-by-step explanation:

because since AC is 24 units long, and BC is half of AC, then that would be 12 units, and since DC is half of BC, then that would be six units.

Answer:

Step-by-step explanation:

By analysis the problem, we can make our  decision by first determining the percent of 3.55 of 4

therefore the percentage can be computed as

=(3.55/4)*100

=0.8875*100

=88.75%

The analysis above it shows that 88.75 percent of the women who give birth to children give birth to 4 children.

This number is very close to a hundred percent hence the statistical claim is  "Agree, 4 children is the most typical number of children."

Answer:

d

Step-by-step explanation:

The variables are the number of clarinet players grade number and type of instrument. The correct option is D.

A variable in mathematics is a sign and placeholder for a variable quantity or another mathematical object. A variable can specifically represent a number, a vector, a matrix, a function, its argument, a set, or one of its elements.

Given that the band leader is recording the number of students in the seventh and eighth grades who play flute and clarinet.

The variables are the number of clarinet players grade number and type of instrument.

Therefore, variables are the number of clarinet players grade number, and type of instrument. The correct option is D.

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9514 1404 393

Answer:

  1000

Step-by-step explanation:

If the number of protesters per minute remains a constant, then you could write the proportion ...

  p/12 = 177/2.1

Multiplying by 12 gives ...

  p = 12(177/2.1) ≈ 1011.4

Here, minutes are given to 2 significant figures, and the initial count is given to 3 significant figures. The best you can hope for is that your estimate is good to 3 significant figures:

 1010 protesters

It is probably sufficient to report the number to 2 significant figures*:

  1000 protesters

_____

* Unfortunately, with a number like 1000, the only way you can tell it has 2 significant figures is to report it as 1.0×10³ or 10. hundreds. The trailing zeros are usually not considered significant.

Answer:

3.2 inches

Step-by-step explanation:

We know that the original painting was 10 inches wide by 16 inches tall.

Our new painting is 2 inches wide by x inches tall.

So, we can write the following proportion:

[tex]\frac{10}{16}=\frac{2}{x}[/tex]

The numerator represents the widths, and the denominator represents the lengths.

Also, note that we align vertically the original and new dimensions.

So, to find our new height, solve for x.

First, we can reduce the fraction on the left:

[tex]\frac{5}{8}=\frac{2}{x}[/tex]

Cross multiply:

[tex]16=5x[/tex]

Divide both sides by 5:

[tex]x=16/5=3.2[/tex]

So, our new height is 3.2 inches.

And we're done!

===============================================

Explanation:

Sequence A is not geometric. Dividing each term by its previous term does not lead to the same common ratio. For instance, 3/1 = 3 and 5/3 = 1.67

Sequence B is a similar story. We have 4/2 = 2 and -6/4 = -1.5

Sequence C is similar as well. This time 5/2 = 2.5 and 7/5 = 1.4

--------

Sequence D is geometric because dividing each term over its previous term leads to the same common ratio

6/3 = 2

12/6 = 2

24/12 = 2

48/12 = 2

The common ratio is r = 2.

Put another way, each term is multiplied by 2 to get the next term

3*2 = 6

6*2 = 12

12*2 = 24

24*2 = 48

Answer:

C. y>2x+1

Step-by-step explanation:

The dashed line automatically means it's either A. or C. because a dashed line indicates it is greater than or less than rather than greater than/ equal to or less than/equal to. Those would have a solid line graphed. The line also has a y-intercept or 1 which means C. is obviously the correct answer.

Answer:

A

Step-by-step explanation:

I did this one before and I still remember this problem

Answer:

a because i have depression

Step-by-step explanation:

The number of possible outcomes will be 64. The correct option is B.

Probability is defined as the ratio of the number of favorable outcomes to the total number of outcomes in other words the probability is the number that shows the happening of the event.

Probability = Number of favorable outcomes / Number of samples

Given that there is an eight-sided die that is rolled twice. The possible number of outcomes will be given as,

Number of outcomes = 8 x 8

Number of outcomes = 64

Therefore, the number of possible outcomes will be 64. The correct option is B.

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Answer:

C

Step-by-step explanation:

|25|/10 - |10|/6 = |5|/6= 5/6

the absolute value of positive number is positive.

Answer:

6[tex]\sqrt{5}[/tex] or approximately 13.416407865

Step-by-step explanation:

List all of the factors of 180.

1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180

Find the perfect squares from the list such as:

1, 4, 9 and 36

Choose the biggest one and divide 180 by it.

180 / 36 = 5

Calculate the square root of your square number

[tex]\sqrt{36}[/tex]=6

Your answer is 5[tex]\sqrt{6}[/tex] (in its simplest radical form)

If you wanted to calculate the answer as a decimal, 5 x [tex]\sqrt{6}[/tex] = approximately 13.416407865