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nordsb [41]
2 years ago
7

If my grade is a 84% and I get a 0 on a project that is 10%, what % would my grade be?

Mathematics
1 answer:
Nady [450]2 years ago
8 0

Answer:  75.6% (C)

Step-by-step explanation:

since you are removing ten percent you just find 90 percent of ur original grade so 90 percent of 84.

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I'll give points and brainalist for answer / explanation
Alika [10]

Answer:

D. 28.26 in²

Step-by-step explanation:

Area of a circle= πr²

r= 3

π= 3.14

A= (3.14)(3)²

A= 28.26 in²

5 0
3 years ago
William says to Gracie, "If you give me $7.50,we will have and equal amount of money. "Grace responds, "That may be true, but if
Ede4ka [16]

Answer:

The amount that William has at the beginning is $37.50 and the amount that Gracie has at the beginning is $52.50

Step-by-step explanation:

Let

x ---> amount that William has at the beginning

y ---> amount that Gracie has at the beginning

we know that

William says to Gracie, "If you give me $7.50,we will have and equal amount of money

so

x+7.50=y-7.50

y=x+15.00 ----> equation A

"Grace responds, if you give me $ 7.50 instead, I will have twice as much money as you

2(x-7.50)=(y+7.50)

2x-15.00=y+7.50

2x-y=22.50 ----> equation B

substitute equation A in equation B

2x-(x+15.00)=22.50

solve for x

x=22.50+15.00=37.50

Find the value of y

y=37.50+15.00=52.50

therefore

The amount that William has at the beginning is $37.50 and the amount that Gracie has at the beginning is $52.50

5 0
4 years ago
The following are the temperatures of 10 days in winter in °C.
lyudmila [28]
The mean is 2.5. also there is mean, median, mode calculators online to help you with these in the future
5 0
3 years ago
There were 25 students in an Algebra class. If the number of girls is 10 more than half the number of boys, how many boys were i
Ilya [14]
There are 25 students. 

Let g = girls, and b = boys

g = 1/2b + 10

g + b = 25

Plug in 1/2b + 10 for g

(1/2b + 10) + b = 25

3/2b + 10 = 25

isolate the b, subtract 10 from both sides, and then multiply by 2/3

3/2b + 10 (-10) = 25 (-10) 

3/2b = 15

(3/2b)/(2/3) = 15(2/3)
b = 30/3
b = 10

Subtract 10 from 25 to get the number of girls

25 - 10 = 15

g = 15

There are 10 boys in the class.

hope this helps
5 0
3 years ago
If f(x) =4x-3 and g(x) =x+4, find (f-g)(x)
LekaFEV [45]

Answer:

3x - 7

Step-by-step explanation:

(f - g)(x)

= f(x) - g(x)

= 4x - 3 - (x + 4)

= 4x - 3 - x - 4 ← collect like terms

= 3x - 7

4 0
3 years ago
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