2 years ago

Factor-20x2 + 13x + 21. How do you solve this

Mathematics

1 answer:

zaharov [31]2 years ago

5 0

Answer:

-3(9x-7)

Step-by-step explanation:

first multiply

20x2=40

and now its -40x+13x+21

then add same variables

-40x+13x=-27x

now its -27x+21

then rewrite the equation

3 x 7=21

-3 x 9x = 27x

now its (-3 x 9x) + (3 x 7)

then the multiply thingy and you got the answer

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The coins in the store s cash register total $12.50. The cash register contains only nickels, dimes, and quarters. There are twi

Oduvanchick [21]

Nickels is 0,05 of dolar - n
dimes is 0,1 o dolar -d
quarters is 0,25 of dolar -q
dimes =2nickels
d=2n
quarters=2dimes
q=2d=4n
12,5=n(0,05)+2n(0,1)+4n(0,25)
12,5=0,05n+0,2n+n
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q=4n=40
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2 years ago

What is 103/143 as a decimal

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2 years ago

Find the average rate of change of the function from <img src="https://tex.z-dn.net/?f=x_%7B1%7D" id="TexFormula1" title="x_{1}"

meriva

Hi there!

$\large\boxed{\text{Average rate} = 2}$

Use the following equation to solve:

$\text{Average rate} = \frac{f(x_{2}) - f(x_{1})}{x_{2} - x_{1}}$

Solve for the y-values of the equation at the given x values:

f(1) = 1² - 4(1) + 10 = 7

f(5) = 5² - 4(5) + 10 = 15

Plug the solved values into the equation:

$\text{Average rate} = \frac{15 - 7}{5-1}$

Simplify:

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1 year ago

What is 4,-5 reflected across the x axis

Anestetic [448]

Step-by-step explanation:

Reflection on x-axis;

A(4,-5)=A'(4,5)

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The value of |kl - |m| if k= -8 and m = -5 is . <br><br> PLEASE HELP

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-3 ? i think if it’s wrong i’m sorry

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