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3 years ago

Algebra 1 system of equations -10x − 7y = -12x = 4

2 answers:

7 0

$= > \: - 10x - 7y = - 12 \\ = > \: - 10(4) - 7y = - 12 \\ = > \: - 40 - 7y = - 12 \\ = > \: - 7y = - 12 + 40 \\ = > \: - 7y = 28 \\ = > y = - \frac{28}{7} \\ = > \: y = - 4$
Hope this helps!

ira [324]3 years ago

5 0

I'm not sure about this but this is what I got

X= -2/11, 7/22

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3 years ago

What number is 60% of 98

Shkiper50 [21]

Answer:

The number is 58.8

Step-by-step explanation:

Let

x -----> the number

we know that

The number 98 represent the 100%

using proportion

Find out what number represent the 60% of 98

$\frac{98}{100\%}=\frac{x}{60\%}\\\\x=98(60\%)/100\%\\\\x=58.8$

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3 years ago

Equation for turning 2.2 into a fraction

irina [24]

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3 0

3 years ago

Read 2 more answers

Match the following items by evaluating the expression for x = -6.

Kryger [21]

Step-by-step explanation:

Put the value of x = -6 to all expressions:

$x^{-2}=(-6)^{-2}=\dfrac{1}{(-6)^2}=\dfrac{1}{6}\qquad\text{used}\ a^{-n}=\dfrac{1}{a^n}\\=====================\\x^{-1}=(-6)^{-1}=\dfrac{1}{(-6)^1}=-\dfrac{1}{6}\\=====================\\x^0=(-6)^0=1\qquad a^0=1\ \text{for all real numbers except 0}\\=====================\\x^1=(-6)^1=-6\qquad a^1=a\ \text{for all real numbers}\\=====================\\x^2=(-6)^2=36$

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3 years ago