The seventh-grade class supplied bags of snacks and beverages for the school dance. They supplied 50 more beverages than bags of snacks. The dance was supplied with a total of 400 items. How many of each were supplied.


A) Define the variables.


B) Write a systems of equations for the situation.


C) Graph the system.

Answer:

20 students offered both physics and biology.

Step-by-step explanation:

n(Total) = 50

n(Physics) = 40

n(Biology) = 30

Let n(Physics and Biology) = x

n(Physics only) = 40 -x

n(Biology only) = 30 - x

40 - x + 30 - x + x = 50

70 - x = 50

x = 20

Answer:

c

Step-by-step explanation:

cause he has to devide by a negative

Answer:

?

Step-by-step explanation:

Answer:

82 points

Step-by-step explanation:

Take 22 and add 20 back to it, and then multiply it by four which gives you 102. You then would subtract 20 and get 82.

Answer:

395 .64 ft2

Step-by-step explanation:

hmm, let's see :

Pi = 3.14 r = 3 ft h = 14 ft

Volume = 3.14 * (3)2 ft *14 ft= 395 .64 ft2

— hope this helped :)! (sorry if there is any mistake !!)

Answer:

No, they're not. To find the area of a circle you need to square the radius. They did not square the radius but instead multiplied it by 2.

Step-by-step explanation:

I hope this helps :)

Answer:

20579.52628

Step-by-step explanation:

4/3 pi(r^3)

4/3 pi x 17 x 17 x 17

= 20579.52628

Answer:

20579.5

Step-by-step explanation:

The formula for The volume of a Sphere is 4/3 pi r^3

so it would be 4/3pi *  4913

4.19666666....* 4913 which would equal to  20.579.53333333333 or 20579.5

Answer:

it would be

18 x 5x = 915

solve the equation

18 x 5 = 90

90x = 915

divide by 90

x =10.1666

Step-by-step explanation:

Answer:

24 sq units

Step-by-step explanation:

shape is a triangle with a height of 6 and a base of 8

A = bh/2

A = (6·8)/2

A = 24

t = 0 belongs to the interval [-3, 3] (since -3 ≤ 0 ≤ 3 is true), so use the middle function to evaluate h (0):

h (0) = 0 × (0 + 4) = 0

Answer:

yes

Step-by-step explanation:

All you need to do for this really is use a calculator and confirm answers are correct and they are. After that you need to show your work to prove the answers are correct.

Answer:

11. a)50      12. a)40

Step-by-step explanation:

sum of  all three angles of  trinagle=180

so

111.

80+50+x=180

130+x=180

x=180-130

x=50

12.

60+90+x=180

150+x=180

x=190-150

x=40

Answer:

A and C

Step-by-step explanation:

Answer:

B.......

Step-by-step explanation:

you can check ✔️

this sol this answer

Answer:

12

Step-by-step explanation:

Answer: 12

Step-by-step explanation:

The diameter is just the radius*2 so the diameter is 12

Answer:

$77.85

Step-by-step explanation:

10% of $173 is $17.30, and $173 - $17.30 is $155.70

$155.70/2 is $77.85

Answer:

72

Step-by-step explanation:

9 x 8 = t

t = 72

Answer:

The area of the circle is 71.62m²

Step-by-step explanation:

hope is right

let me know if it is correct

A=C2

4π=302

4·π≈71.61972m²

Answer:

4

Step-by-step explanation:

Vertical angles are angles formed when two straight lines intersects at a point forming vertical angles that share the same vertex and are directly opposite to each other.

In the diagram given, we have the following pairs of vertical angles:

<7 and <9

<8 and <10

<12 and <14

<11 and <13

Therefore there are 4 pairs of vertical angles

Answer

$199.8

Explanation:

Find the total amount of money he had in the begining. It says that he can spend $18 on each student. He has 18 students so you would multiply that by the $18 he can spend which gives a total of $324 then you subtract the total cost of the calculators from it which then gives you $199.8

Answer:

A) Airplane A has a lesser median

Step-by-step explanation:

If you look at the photo you see both airplane A and airplane B and if you were to line them up

airplane A=3

airplane B=4 ½  

so clearly airplane A would have a lesser median than airplane B

Answer:

f

Step-by-step explanation:

Green vines attached to the trunk of the tree had wound themselves toward the top of the canopy. Ants used the vine as their private highway, avoiding all the creases and crags of the bark, to freely move at top speed from top to bottom or bottom to top depending on their current chore. At least this was the way it was supposed to be. Something had damaged the vine overnight halfway up the tree leaving a gap in the once pristine ant highway.

The whole numbers will be:

{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14}

Remember that a square root will have a whole number as an outcome only if the input is a square number.

Then, what we can do here is just find all the square numbers smaller than 200.

1*1 = 1

2*2 = 4

3*3 = 9

4*4 = 16

5*5 = 25

6*6 = 36

7*7 = 49

8*8 = 64

9*9 = 81

10*10 = 100

11*11 = 121

12*12 = 144

13*13 = 169

14*14 = 196

Then, if we take the square roots of all the natural numbers from 1 to 200, we will have 14 whole numbers as outcomes, and these will be:

{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14}

If you want to learn more about square roots, you can read:

https://brainly.com/question/8952483

Answer:

It decreased by 25%

Step-by-step explanation:

8 x .25=2

8 - 2 = 6

Respuesta:

La fracción equivalente a 0.01 es 1/100.

Answer:

y=9

Step-by-step explanation:

5(y-10)=-5

5y-50=-5

+50 +50

5y=45

/5 /5

y=9

Answer:

A. < B. < C. >

Step-by-step explanation:

Answer:

Sale Price = $29.05 (answer). This means the cost of the item to you is $29.05. You will pay $29.05 for a item with original price of $35 when discounted 17%. In this example, if you buy an item at $35 with 17% discount, you will pay 35 - 5.95 = 29.05 dollars