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Sidana [21]
3 years ago
14

Need help : a^2-7a =0

Mathematics
1 answer:
Sladkaya [172]3 years ago
7 0

Answer:

a = 0 or a = -7

Step-by-step explanation:

We are going to solve this quadratic equation by factorizing.

a² - 7a = 0

a(a - 7) = 0

a = 0 or a - 7 = 0

a = 0 or a = -7

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X^2-5x-36:factorize it
aliina [53]
In factorizing its 36 my dude. Im sure just took the test




5 0
3 years ago
HELP PLEASE!
Svet_ta [14]
Hello! I believe the answer to your question is C (hours). If t is the amount of time it takes, hours is a unit of time, therefore I assume that would be your answer. :)
7 0
4 years ago
What is 4(0.5x + 2.5y - 0.7y - 1.3y + 4) simplified?
Maslowich
4(0.5x + 2.5y - 0.7y - 1.3y + 4)
multiply 4 by all in parentheses

(4*0.5x)+(4*2.5y)+(4*-7y)+(4*-1.3y)+(4*4
=2x+10y-28y-5.2y+16

combine like terms
=2x-23.2y+16

ANSWER:
Expression simplified 2x-23.2y+16

Hope this helps! :)
4 0
3 years ago
Daniel and Sofia both solve this system of equations:
yarga [219]

You, too, can read the graph and determine that the second selection is appropriate. Or, you can graph it yourself and determine the (one) correct solution.

6 0
3 years ago
Complete the equation of the line through (-10,3) and (-8,-8)
Alina [70]

Answer: 2y + 11x = -104

Step-by-step explanation:

The formula for calculating equation of line given two points is :

\frac{y-y_{1}}{x-x_{1}} = \frac{y_{2}-y_{1}}{x_{2}-x_{1}}

x_{1} = -10

x_{2} = -8

y_{1} = 3

y_{2} = -8

substituting the values into the formula , we have :

\frac{y-3}{x-(-10)} = \frac{-8-3}{-8-(-10)}

\frac{y - 3}{x + 10} = \frac{-11}{2}

2(y - 3 ) = -11 ( x +10 )

2y - 6 = -11x - 110

2y + 11x = -110 + 6

2y + 11x = -104

Therefore : the equation of the line in standard form is 2y + 11x = -104

8 0
3 years ago
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