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3 years ago

in Mr.Kleins class, 40% of the students are boys. What decimal represent the portion of the students that are girls

Mathematics

1 answer:

Anna71 [15]3 years ago

4 0

Answer:

well there is 60% girls

Step-by-step explanation:

40% are boys out of 100%

So what you have to do is find out what added by 40 is 100 which is 60 so it's

40% boys to 60% girls

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this formula, i represents the _____ of the loan. a. annual interest rate b. interest rate per period c. initial amount d. incid

Phantasy [73]

Answer:

b. interest rate per period

Step-by-step explanation:

We know that

Annual interest rate is APR or (r)

Po is initial amount

n is number of periods

t is time in years

A is the amount after t years

so,

i is the interest rate per period

Hence ,

answer is

i is the interest rate per period

3 0

3 years ago

Determine the slope of the line that passes through each pair of points. TEKS 8.4(B)

lana66690 [7]

Slope of EF = 5/2

Slope of XY=4/3

Further explanation:

"Slope is the steepness of a line"

The formula for slope when two lines are given:

$m=\frac{y_2-y_1}{x_2-x_1}$

Now,

$m=\frac{4-(-1)}{4-2}\\ =\frac{4+1}{2}\\ =\frac{5}{2}$

$m=\frac{0-4}{-2-1}\\ =\frac{-4}{-3}\\ =\frac{4}{3}$

Hence,

Slope of EF = 5/2

Slope of XY=4/3

Keywords: Slope, Slope Calculation

Learn more about slope at:

#LearnwithBrainly

7 0

3 years ago

(-18x^2+12x-2)*(x^3+12x^2+48x+64)

prohojiy [21]

<h2>Answer:</h2>

-18x^5-204x^4-722x^3-600x^2+672x-128

<h2>Explanation:</h2>

$( - 18 {x}^{2} + 12x - 2)$

$( {x}^{3} + 12 {x}^{2} + 48x + 64)$

There are multiple ways to solve this for example the foil method or the box method. I prefer to do the box method.

First we are going to set it up

After we set it up we have to solve it so first we are going to multiply

${x}^{3} \times - 18 {x}^{2} = - 18 {x}^{5}$

We have to add the exponent

$- 18 {x}^{2} \times 12 {x}^{2} = - 216 {x}^{4}$

$- 18 {x}^{2} \times 48x = - 864 {x}^{3 } \\ - 18{x}^{2} \times 64 = - 1152 {x}^{2} \\ 12x \times {x}^{3} = 12 {x}^{4} \\ 12x \times 12 {x}^{2} = 144 {x}^{3}$

$12x \times 48x = 576 {x}^{2} \\ 12x \times 64 = 768x$

$- 2 \times {x}^{3} = - 2 {x}^{3} \\ - 2 \times 12 {x}^{2} = - 24 {x}^{2} \\ - 2 \times 48x = - 96x \\ - 2 \times 64 = - 128$

Now we have to add them

-18x^5 stays because there is nothing to add to

Now we add the rest

$-216 {x}^{4} + 12 {x}^{4} = - 204 {x}^{4}$

$- 864 {x}^{3} + 144 {x}^{3} + - 2 {x}^{3} = - 722 {x}^{3}$

$768x - 96x = 672x$

And -128 stays the same

$- 1152 {x}^{2} + 576 {x}^{2} - 24 {x}^{2} = - 600 {x}^{2}$

The answer is

-18x^5-204x^4-722x^3-600x^2+672x-128

5 0

4 years ago

Please help: x+3y=4 x= -2

vesna_86 [32]

-2+3y=4
+2 +2
3y= 6
/3 /3
Y= 2

4 0

3 years ago

Read 2 more answers

Subtract 10x^2 -10x+2 from -8x^2+7x-7

lianna [129]

Answer:

182 −17+9

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers