During lunch on Friday, 45 students in the 7th
grade chose pizza. This represented 25% of the
seventh-grade class. How many students are in the
entire 7th grade class?

Answers

Answer 1
If 25% is 45 students, then 100% is 180 students. There are 180 students in the entire 7th grade class.
Answer 2

Answer:

135

Step-by-step explanation:


Related Questions

A fence surrounds two sides of the
backyard. The total length of the fence is 86
feet, with the longest portion measuring 51.5
feet. What is the length of the second side of
the fence?

Answers

Answer:34.5

Step-by-step explanation:

86-51.5= 34.5

Helppppp!
Regular pentagon RSTUV has sides that are half the length of regular pentagon JKLMN,
What is the ratio of the perimeter of pentagon RSTUV to the perimeter of pentagon JKLMN?
A 1:2
B, 1:4
C, 1:5
D. 1:10
E, 1:25

Answers

Answer:

A, 1:2 ratio

Explanation:

Since 1 is half of 2, and the problem states that RSTUV is half of JKLMN, A is the correct ratio.

Answer:

c

Step-by-step explanation:

which graph shows a system of equations with infinitley many solutions

Answers

Answer:

where are the equation I don't see them

68/7 in fraction form

Answers

Answer:

9.71 in decimal form

Step-by-step explanation:

Suppose that $6500 is placed in an account that pays 17% interest compounded each year. Assume that no withdrawals are made from the account.

Answers

Answer: $7,605

Step-by-step explanation:

At the end of 1 years, the amount in the account will be:

= Principal * (1 + rate)^ no. of periods

= 6,500 * (1 + 17%)

= $7,605

Alyssa collects coins. ¾ of her coins are quarters, ⅔ of the remaining coins are dimes. The rest were nickels. There were 12 nickels. How many coins were in Alyssa’s collection?

Answers

Answer:

144 coins counting the nickels 132 not counting the nickels

Step-by-step explanation:

It’s a picture^^^^^^^^

Answers

Answer: F

Step-by-step explanation: 5+6+7x8=67

PLZ HELP ANSWER!!!!!

Answers

Answer:

Step-by-step explanation:

so, i might be wrong but i hope this helps.

The slope will be the same for a straight line no matter which two points you pick as you know. All you need to do is to calculate the difference in the y coordinates of the 2 points and divide that by the difference of the x coordinates of the points(rise over run). That will give you the slope.

Kris bought a 6 pack of water bottles for $4.79. Find the unit rate to the nearest cent.

Answers

Step-by-step explanation:

Kris bought a 6 pack water for =4.79$

So,

1 unit of water bottle =[tex]\tt{\dfrac{4.79}{6}=0.798333....=0.80\$ }[/tex] ⠀

This will be so helpful right now thank

Answers

Answer:

55 ft.

Step-by-step explanation:

First find the area of Lot X

67 • 70 = 4,690

Subtract the are of Lot X from the total area

8,375 - 4,690 = 3,685

3,685 is the area of Lot Y

Now divide 3,685 by the length of Lot Y : 67

3,685 ÷ 67 = 55

The width of Lot Y is 55 ft.

Hope this helps!

i will mark brainliest to whoever shows their work

Answers

Answer: -280000

Step-by-step explanation: Remove parentheses: (a)=a   =12x10 4  - 4x10 5

12x10 4 = 120000

4x10 5=400000

=120000-400000

then subtract the numbers:120000-400000= -280000

HELP! whoever gets it right gets brainliest!!

Answers

Answer:

2

Step-by-step explanation:

Which statement is true about the numbers marked on this horizontal number line?

A.
0.25 -0.25
C.
-0.25 = 0.25
D.
-0.25 > 0.25

Answers

It is C because they are both equal in distance.

Answer:

B!

Step-by-step explanation:

The answer is B. id.k how to explain tho.

In the diagram, A ABC and A CDA are congruent. A B 44 7 5 4 4 What is the length of AD? O A. 3 units B. 4 units oc. C. 5 units OD. 6 units E, T units​

Answers

Answer:

5 units

Step-by-step explanation:

if they are congruent that means that the corresponding sides have the same lenghts. in this case ad's corresponding side is bc, which is 5 units and so is ad respectively

Please answer test!

Are these shapes similar?

Answers

yes they are! hope this helps :)

If 1 inch on a map represents 20 miles, what is the mileage represented by 2.5 inches?
A 40 miles
B 10 miles
C 45 miles
D 50 miles

Answers

Answer:

50 miles(D)

Step-by-step explanation:

20 x 2.5

pls help! :( if you get it right I’ll give brainliest!!

Answers

Answer:

2.3 A

Step-by-step explanation:

Its 2.3 what am I supposed to say

The awnserrrrrrrrrrrrr issssssssss aaaaaaaaaa

Matteo is following this recipe to make a cake.
He wants to make four of these cakes.
How much of each ingredient does he need?

Recipe: Makes 1 cake
3 ounces butter
4 ounces sugar
5 ounces of flour
2 eggs
1 teaspoon (tsp) baking powder

Answers

Answer:

12 ounces butter

16 ounces sugar

20 ounces flour

8 eggs

4 teaspoons baking powder

Step-by-step explanation:

just times everything individually by 4

Which expression has the same value as the sum of 45 and 25?
14+10
5(9+5)
9(5+5)
5(8) +5(5)

Answers

5(9+5)
when you open the parentheses you get 45+25

The cost of an Internet service subscription varies directly with the length of the subscription. A 3 month subscription costs $32.85. How much does a 12 month subscription cost?​

Answers

Answer:

the answer is 131.4

Step-by-step explanation:

32.85/3= 10.95

10.95×12= 131.4

Melissa rolls 2 fair dice and adds the results from each.
Work out the probability of getting a total of 12.

Answers

Answer:

1/36

Step-by-step explanation:

(6,6) is the only possible outcome of getting a total of 12

Please help with this

Answers

Answer: 86

Step-by-step explanation:

Answer:

86

Step-by-step explanation:

I did this before I think it was 86 not sure

please help will give u brainliest pls help me​

Answers

Answer:

19

Step-by-step explanation:

1/2*(5+x)*4=48

The formula for finding the area of a trapezium is:
Area= 1/2 x (a+b) x h
So the formula will work oppositely
4 cm is the height while 5 and the other 5 is sides.. sorry i can’t find the formula now

17/15 - 4/5 please answer

Answers

Answer:

1/3

Step-by-step explanation:

17/15-4/5

17/15-4*3/5*3

17/15-12/15

17-12/15

5/15

1/3

The equivalent value of the fraction is A = 1/3

Given data ,

Let the equation be represented as A

Now , the value of A is

Let the first fraction be p

Let the second fraction be q

Now , A = p - q

when the value of p = 17/15

And , when the value of q = 4/5

On simplifying the equation , we get

A = 17/15 - 4/5

So , the left hand side of the equation is equated to the right hand side by the value of ( 17/15 - 4/5 )

A = ( 17/15 - 4/5 )

Taking the LCM of the denominators of the fraction , we get

A = ( 17 - 12 ) / 15

On simplifying , we get

A = 5/15

A = 1/3

Therefore , the value of A = 1/3

Hence , the fraction is A = 1/3

To learn more about fractions click :

https://brainly.com/question/29766013

#SPJ6

A koala weighs 20 pounds. In her pouch, she carries her joey that weighs 20 ounces. What is the combined weight of the adult koala and her joey in ounces? (HELP FAST)

Answers

Answer:

kjgfdhsxfcgmnhmj,kouiyf

Step-by-step explanation:ugytfguilhyuyrtdyrjcgvh

Answer:

340 oz

Step-by-step explanation:

20 lb = 320 ounces

320 oz + 20 oz = 340 oz

Giving thanks, brainliest, or rating would be appreciated!

What is the volume of the rectangular pyramid shown belown?

Answers

9514 1404 393

Answer:

  168 cubic inches

Step-by-step explanation:

The formula for the volume of a pyramid is ...

  V = (1/3)Bh

where B is the area of the base, and h is the height.

The base is a rectangle, whose are is given by the formula ...

  A = LW

  A = (8 in)(7 in) = 56 in²

Then the pyramid volume is ...

  V = (1/3)(56 in²)(9 in) = 168 in³

The volume of the pyramid is 168 cubic inches.

A certain city's power company charges their residents for electricity usage on a daily basis. There is a basic charge of 11.6 cents. For each day the first 10 kWh cost 4.59 cents per kWh and any additional kWhs are 9.71 per kWh. (A kWh, or kilowatt-hour, is a unit of energy.)

Complete the following table using the information provided above.

KWh 0 5 10 15 20
cost(dolllar)

KWh 25 30 35 40
cost(dolllar)

Answers

Answer:

Table of charges:

KWh                                                        0       5           10          15           20    

Basic charge (cents)                          11.60    11.60     11.60      11.60       11.60

Charge for first 10 kWh (4.59cents)    0     22.95   45.90    45.90     45.90

Additional usage above 10 kWh          0       0           0         48.55      97.10

(9.71 cents)

Total (cents)                                     11.60   34.55   57.50   106.05    154.60

cost (dollar)                                       0.12     0.35      0.58   1.06         1.55

KWh                                                           25           30          35           40

Basic charge (cents)                               11.60        11.60        11.60        11.60

Charge for first 10 kWh (4.59cents)    45.90      45.90       45.90      45.90

Additional usage above 10 kWh         145.65    194.20    242.75     291.30

(9.71 cents)

Total (cents)                                        203.15    251.70     300.25    348.80                                  

cost (dollar)                                         2.03        2.52          3.00       3.49

Step-by-step explanation:

a) Data:

Basic charge = 11.6 cents (0.116)

Charge for the first 10 kWh = 4.59 cents (0.0459)

Charge for additional usage above 10 kWh = 9.71 cents (0.0971)

b) Each kWh consumed or not attracts the basic charge of 11.6 cents.  The first 10 kWh consumed is billed at 4.59 cents, while the additional kWh consumed is charged at 9.71 cents.  The charge per consumption is first totaled in cents before being converted to dollars by dividing by 100.

What is the slope of the line

Answers

Answer:

B.

Step-by-step explanation: Because when you count them down to 3/5 It's more in the negative.

B.

Remember Rise over Run, Rise/Run

In this case it rises -3 and runs 5 :)

A closed-top cylindrical container is to have a volume of 250 in2. 250 , in squared , . What dimensions (radius and height) will minimize the surface area?

Answers

Answer:

radius r = 3.414 in

height h = 6.8275 in

Step-by-step explanation:

From the information given:

The volume V of a closed cylindrical container with its surface area can be expressed as follows:

[tex]V = \pi r^2 h[/tex]

[tex]S = 2 \pi rh + 2 \pi r^2[/tex]

Given that Volume V = 250 in²

Then;

[tex]\pi r^2h = 250 \\ \\ h = \dfrac{250}{\pi r^2}[/tex]

We also know that the cylinder contains top and bottom circle and the area is equal to πr²,

Hence, if we incorporate these areas in the total area of the cylinder.

Then;

[tex]S = 2\pi r h + 2 \pi r ^2[/tex]

[tex]S = 2\pi r (\dfrac{250}{\pi r^2}) + 2 \pi r ^2[/tex]

[tex]S = \dfrac{500}{r} + 2 \pi r ^2[/tex]

To find the minimum by determining the radius at which the surface by using the first-order derivative.

[tex]S' = 0[/tex]

[tex]- \dfrac{500}{r^2} + 4 \pi r = 0[/tex]

[tex]r^3 = \dfrac{500 }{4 \pi}[/tex]

[tex]r^3 = 39.789[/tex]

[tex]r =\sqrt[3]{39.789}[/tex]

r = 3.414 in

Using the second-order derivative of S to determine the area is maximum or minimum at the radius, we have:

[tex]S'' = - \dfrac{500(-2)}{r^3}+ 4 \pi[/tex]

[tex]S'' = \dfrac{1000}{r^3}+ 4 \pi[/tex]

Thus, the minimum surface area will be used because the second-derivative shows that the area function is higher than zero.

Thus, from [tex]h = \dfrac{250}{\pi r^2}[/tex]

[tex]h = \dfrac{250}{\pi (3.414) ^2}[/tex]

h = 6.8275 in

find the equation of the straight line passing through the point (0,1) which is perpendicular to the line y=-2x+2

Answers

Answer:

y = 1/2x + 1

Step-by-step explanation:

In order to evaluate a slope that is perpendicular to the given equation, you need to find the opposite reciprocal of the original slope. This means you take the original slope, flip the numerator and the denominator, and change the sign in front.

-2 ⇒ 1/2

Next, we need to substitute the information given into the point-slope formula.

The point-slope formula is:

y - y₁ = m(x - x₁)

y - 1 = 1/2(x - 0)

y - 1 = 1/2x

y = 1/2x + 1

Therefore, the line perpendicular to y = -2x + 2 is y = 1/2x + 1.

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