PLEASE HELP WILL MARK BRAINLIEST YOU DONT HAVE TO EXPLAIN

Answer:

Students in 7th grade took a standardized math test that they also had taken in 5th grade. The results are shown on the dot plot, with the most recent data shown first.

Find and compare the means to the nearest tenth.

7th-grade mean:

✔ 16

5th-grade mean:

✔ 13.4

What is the relationship between the means?

✔ The 7th-grade mean is about 2.5  points higher.

Step-by-step explanation:

Mean for 7th Grade Students is: 16

Mean for 5th Grade Students is: 13.4

Comparing the means, the mean for 7th grade students is 2.6 higher than 5th grade students.

The mean is the average of the data set, that is the sum of each data value divided by the number of data points.

Given that, 7th Grade Students in 7th grade took a standardized math test that they also had taken in 5th grade.

Mean for 7th Grade Students:

Mean = [10 + 11 + (2 × 12) + 13 + 14 + (2 × 15) + (3 × 16) + (3 × 17) + (2 × 18) + (2 × 19) + (3 × 20)]/21

Mean = 335/21

Mean = 15.95 = 16

Mean for 5th Grade Students:

Mean = [8 + (2 × 9) + (2 × 10) + (2 × 11) + (2 × 12) + (2 × 13) + 14 + (3 × 15) + (2 × 16) + 17 (2 × 18) + 19

Mean = 281/21

Mean = 13.38 = 13.4

The difference between their means = 16 - 13.4 = 2.6.

Hence, Mean for 7th Grade Students is: 16

Mean for 5th Grade Students is: 13.4

Comparing the means, the mean for 7th grade students is 2.6 higher than 5th grade students.

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Answer:

a=7

Step-by-step explanation:

Answer: a = 7

Step-by-step explanation:

2a - 6(a - 4) = -4

2a - 6a + 24 = -4

-4a + 24 = -4

-4a = -28

a = 7

Answer:

-7 3/4x7(3) and 6 1/4x-4

Step-by-step explanation:

How u insert a image=When u ask a question there should be a paperclip looking thing click that and you can insert a image

B.9 gallons in the gas tank and 280 miles.

From the given figure we see that the line of best fit passes through the point (13,400) and (17,520)

We know that the equation of a line passing through two point (a,b) and (c,d) is calculated by using the formula

y - b = d-b/c-a x (x-a)

Here we have:

(a,b)=(13,400) and (c,d)=(17,520)

Hence, the equation of line of best fit is: y - 400 = 520 - 400/17-3 x (x - 13)

y-400=120/4 x (x-13)

y=400=30x(x-13)

y-400=30x-390

y=30x-390+400

If u want to check your answers

0 gallons in the gas tank and 20 miles

when x=0 we have:

y=10≠20

Hence, option: A is incorrect.

B)

9 gallons in the gas tank and 280 miles .

when x=9 we have:

y=30×9+10

y=280

Hence, option: B is correct.

C)

11 gallons in the gas tank and 360 miles

when x=11; we have:

y=30×11+10

y=340≠360

Hence, option: C is incorrect.

D)

19 gallons in the gas tank and 520 miles

when x=19; we have:

y=30×19+10

y=580≠520

Hence, option: D is incorrect.

Answer: henrik has 320 potatoes in al

Step-by-step explanation:. Henrick has 3x as many as derek when you here times you multiply. derek has 49x3 equals 147 but henrik has 173 extra potatoes 147+173 equals 320

Answer

R=6

Step-by-step explanation:

Hope this helps!

Answer:

Step-by-step explanation:

Answer is :

r=6

Answer:

Step-by-step explanation:

im not positive but wouldnt that be (2.5.,5.5) because its in beteween the numbers?

Answer:

72%

Step-by-step explanation:

18/25 = 0.72

0.72 x 100 = 72

Answer:

72%

Step-by-step explanation:

Step 1 we make the assumption that 25 is 100% since it is our output value

Step 2 we next represent the value we seek with x

Step 3 from step 1, follows that 100%=25

Step 4 in the same vein, x%=18

Step 5 this gives us a pair of simple equations: 100% = 25(1)

X%= 18(2)

Step 7: taking inverse of both sides yields

X%\100% = 18/25

—> = 72%

Therefore, 18 is 72% of 25

Answer:

x is 35

Step-by-step explanation:

First do 180 -40 and get 140. Then add 3x plus x to get 4x because they are the same value/ Do 140/ 4x and get 35. X equals 35.

Answer:

35, 135

Step-by-step explanation:

You first add the like terms. 3x + x = 4x. Next you form an inequality.

40 - 4x = 180.

x = 35

Since x equals 35 you do 3 * 35. 3(35), which is 105.

35 + 40 + 105 = 180!

Answer:

0

Step-by-step explanation:

0 = 0 anything with a zero is zero.

Answer:

2,144.66 in³

Step-by-step explanation:

Thus, the volume of the water in the fishbowl = volume of a sphere having diameter of 16 inches

=  2,144.66 in³

Answer: 6+x+24y  maybe

this just answer for points

Answer: 2250

Step-by-step explanation: all you have to do is multiply 90 x 25 which equals 2250

Answer:

5

Step-by-step explanation:

2x - 3 + 4x= 27

6x - 3= 27

6x= 27 + 3

6x= 30

X= 30/6= 5

Answer:

the answer is $33.9

Answer:3.39

Step-by-step explanation: what you do is you divide 10.17 and 3 and it will give you 3.39

Answer: C) Always false

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

Explanation:

A linear pair of angles satisfy these two requirements (both must be true)

While it is possible for vertical angles to be supplementary (they both are 90), it is not possible for vertical angles to be adjacent. This is because vertical angles do not share a common side. Vertical angles are opposite one another, so they are as far from adjacent as possible, while still sharing a common vertex point however.

This means that vertical angles are never considered to be a linear pair. Put another way, you can ask yourself "can vertical angles form a straight line?". The answer is "they can never form a straight line". Again the fact they aren't adjacent is the reason why.

Answer:

6. Yes, there is a way to tell. Perpendicular when the product of the slopes equal -1. Parallel = same slope. Same line = same equation(maybe written in different ways like point-slope or standard form).

7. The equations in system 4 are parallel because they have the same slope.

1. purple box = y=-3x+5

  green box = y= 4x-3

  blue box = y= -2/3 + 2

Step-by-step explanation:

Answer:

[tex]y^1^2[/tex]

Step-by-step explanation:

apply the rule (a) = a [tex](y^4)=y^4[/tex]

[tex]y^8y^4[/tex]

apply the exponent rule

[tex]y^8y^4 = y^8^+^4[/tex]

[tex]=y^8^+^4[/tex]

add the numbers

[tex]8+4=12[/tex]

which would make the answer

[tex]y^1^2[/tex]

Answer:

A is 3 -3 and c is true

Step-by-step explanation:

Answer: I believe this is correct, i got 80 tickets

Step-by-step explanation:

I divided 2212.50 by the adult tickets, 7.50, and got 295. if the adults sold 295 tickets, then the students would have sold 80, because thats all that were left. I hope I helped

The number of student tickets the class sold is 200.

Let

x = number of student ticket sold

y = number of adult ticket sold

The junior class at Summerfield High School sold a total of 375 tickets for their spring festival. Therefore,

The junior class collected $2,212.50 in ticket sales. Therefore,

Combine the equation to get the number of student ticket sales.

x + y = 375

4.50x + 7.50y = 2212.50

Multiply equation(i) by 4.50x

4.50x + 4.50y = 1687.5

4.50x + 7.50y = 2212.50

3y = 525

y = 525 / 3

y = 175

x + y = 375

x = 375 - 175

x = 200

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Answer:

Part a: 123

Part b: C

1. F(x)=4(2)1

2. F(x)= -4(2)1

3. F(x)=21

4. F(x)=-21

Last is B

Step-by-step explanation: hope this help

Answer: The probability of choosing a green marble is [tex]\frac{1}{3}[/tex].

Step-by-step explanation:

Answer:

The probability of choosing a green marble is 1/3

Step-by-step explanation:

Answer

(3,8) because both of the trapezoid equals 3,8.