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guapka [62]
3 years ago
9

Fred has a bag of coin with only nickels and quarters. He got $20 by

Mathematics
1 answer:
Sedbober [7]3 years ago
5 0

Answer:

75 quarters 25 nickels

Step-by-step explanation:

q=quarters n=nickels

q+n=100   n=100-q

0.25q +0.05(100-q)=20

From now I will multiply  by 100 to avoid decimals

25q + 5(100-q)=2000

20q=1500

q=75       n=25

75*0.25= 18.75

25*0.05=1.25

18.75+1.25=20

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The location of the in center of abc is closest to:
MAVERICK [17]

Answer:

Point D

Step-by-step explanation:

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2 years ago
5(x+3)-5<br> simplify this.
nignag [31]

Answer:

5x+10

Step-by-step explanation:

Distribute:

=(5)(x)+(5)(3)+−5

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8 0
3 years ago
What is the approximate area that is shaded red?
Mashcka [7]

To find the area that is shaded red, you find the area of the rectangle and subtract it by the area of the triangle.


Area of a rectangle:

A = l × w             [ l = 11 in ; w = 6in ]    Plug these numbers into the equation

A = 11 · 6

A = 66 in²


Area of a triangle:

A=\frac{1}{2}bh     [ b = 4 in ; h = 6 in ] Plug these #s into the equation

A = \frac{1}{2}(4)(6)

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Your answer is B

3 0
3 years ago
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