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ryzh [129]
3 years ago
14

If twelve pounds of nails cost $3.84 what is the unit cost A) 32c B) 28c C) 23c D) 18c

Mathematics
2 answers:
aalyn [17]3 years ago
7 0

Answer:

Option A) 32c

Step-by-step explanation:

we know that

To find the unit cost, divide the total cost of twelve pounds by twelve pounds

so

\frac{\$3.84}{12}=\$0.32

Remember that

1$=100 cents

Convert dollars to cents

\$0.32=0.32*100=32c

therefore

The cost of one pound of nails cost 32 cents

Alex Ar [27]3 years ago
7 0

Answer:

A 32c

Step-by-step explanation:

We have that 12 pounds of nails cost $3.84. To know the cost per unit we just need to divide $3.84 in 12, then:

\dfrac{\$3.84}{12}=\$0.32

Then the correct answer is A 32c

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B. Yes, because it passes the vertical line test.

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2 years ago
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I need help with these two questions!! I got 72° for Question 7, I don't know I need help with both of them!! PLEASE HELP!! :)
Nat2105 [25]

Answer:

7. 49

8. 10.4

Step-by-step explanation:

7) our hypotenuse is 8, and the side opposite the base of ladder and ground angle is 6, therefore we can use Sin

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sin(x) = 6/8 = 3/4

sin-1(3/4) = 49

8) using the theorem that alternate exterior angles are congruent

the angle opposite side x is 30

tan = opposite/adjacent

tan(30) = x/18

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you can also use 30-60-90 special right triangles.

the side opposite 30 is x

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3 0
3 years ago
Last year, Kevin had 20,000 to invest. He invested some of it in an account that paid 6% simple interest per year, and he invest
tester [92]

$13,000 was invested at 6% whereas $7,000 was invested at 10% using simple interest approach

What is simple interest?

Simple interest is determined as the amount invested multiplied by the interest rate and the number of years that investment lasts.

I=PRT

I=interest

P=principal

R=rate of return

T=time

Let X be the amount invested at 6%

I at 6%=6%*X*1

I=0.06X

The amount invested at 10% is 20,000-X

total interest=0.06X+0.10*(20000-X)

total interest=1,480

1480=0.06X+0.10*(20000-X)

1480=0.06X+2000-0.10X

1480-2000=0.06X-0.10X

-520=-0.04X

X=-520/-0.04

X=13,000

13,000 was invested at 6%

amount invested at 10%=20,000-X

amount invested at 10%=20,000-13,000

amount invested at 10%=7,000

Find out more about simple interest on:brainly.com/question/20690803

#SPJ1

4 0
1 year ago
Is the amount 0.31 more less or equal to half.
Fudgin [204]
If you mean half as in 1/2, then yes, 0.31 is less than half because 1/2 as a decimal is 0.50. 

Make me brainliest answer if this helped you!
8 0
3 years ago
The side of a square is 2 7/2 inches. Using the area formula A = s2, determine the area of the square.
o-na [289]
<span>the answer A=49 square inches</span>
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