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3 years ago

What is 42% of 75? A. 315 B. 105 C. 31.5 D. 10.5

Mathematics

2 answers:

iragen [17]3 years ago

7 0

Answer:

31.5

Step-by-step explanation:

42% of 75 is 31.5. The working is as follows :

42 ÷ 100 × 75 = 31.5

You can also use the picture ^^

lubasha [3.4K]3 years ago

6 0

Answer:

$C.$ $31.5$

Step-by-step explanation:

When trying to find a percent of a number, you must always do the following steps:

Multiply the number by the percent number.

$42 * 75 = 3150$

Dividing you answer by 100.

$3150 / 100 = 31.5$

Add percent sign.

31.5%

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I need help with 15,16,17 please and thank you

Morgarella [4.7K]

Answer:

1= 23

2= 104

3= 90

Step-by-step explanation:

6 0

3 years ago

Sharon uses 6.3 pints of blue paint and white paint to paint her bedroom walls. 4 5 of this amount is blue paint, and the rest i

Y_Kistochka [10]

Given:

Sharon uses 6.3 pints of blue paint and white paint to paint her bedroom walls.

$\dfrac{4}{5}th$ of this amount is blue paint and the rest is white paint.

To find:

The pints of white paint did she use to paint her bedroom walls.

Solution:

We have,

Total paint used = 6.3 pints

Blue paint = $\dfrac{4}{5}th$ of total paint used

= $\dfrac{4}{5}\times 6.3$

= $5.04$

White paint = Total paint used - Blue paint

= $6.3-5.04$

= $1.26$

Therefore, Sharon uses 1.26 pints of white paint to paint her bedroom walls.

5 0

2 years ago

Rewrite the equation to isolate the variable.. df= g- 10 for d

ehidna [41]

Df = g - 10

To solve for d, divide both sides by f.

df / f = (g - 10) / f

d = (g - 10) / f

I hope this explains it.

6 0

3 years ago

In the parabola y = (x + 12 + 2, what is the vertex?

VladimirAG [237]

Answer:

The vertex is the point (-6,-34)

Step-by-step explanation:

we know that

The equation of a vertical parabola into vertex form is equal to

$y=a(x-h)^{2}+k$

where

(h,k) is the vertex of the parabola

In this problem we have

$y=x^{2}+12x+2$

Convert in vertex form

Group terms that contain the same variable, and move the constant to the opposite side of the equation

$y-2=x^{2}+12x$

Complete the square . Remember to balance the equation by adding the same constants to each side.

$y-2+36=x^{2}+12x+36$

$y+34=x^{2}+12x+36$

Rewrite as perfect squares

$y+34=(x+6)^{2}$

$y=(x+6)^{2}-34$

The vertex is the point (-6,-34)

4 0

3 years ago

4 1/3 - 1 2/3 how to solve this please

8_murik_8 [283]

Answer:

$2\frac{2}{3}$

Step-by-step explanation:

1) Convert $4\frac{1}{3}$ to improper fraction. Use this rule: $a\frac{b}{c} =\frac{ac+b}{c}$ .

$\frac{4\times3+1}{3} -1\frac{2}{3}$

2) Simplify 4 * 3 to 12.

$\frac{12+1}{3}$

3) Simplify 12 + 1 to 13.

$\frac{13}{3} -1\frac{2}{3}$

4) Convert $1\frac{2}{3}$ to improper fraction. Use this rule: $a\frac{b}{c} =\frac{ac+b}{c}$ .

$\frac{13}{3} -\frac{1\times3+2}{3}$

5) Simplify 1 * 3 to 3.

$\frac{13}{3} -\frac{3+2}{3}$

6) Simplify 3 + 2 to 5.

$\frac{13}{3} -\frac{5}{3}$

7) Join the denominators.

$\frac{13-5}{3}$

8) Simplify.

$\frac{8}{3}$

9) Convert to mixed fraction.

$2\frac{2}{3}$

(Decimal Form: 2.666667)

Thank you,
Eddie

3 0

2 years ago