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3 years ago

Factor j^2– 13j + 42.

Mathematics

1 answer:

Karolina [17]3 years ago

7 0

Answer:

(J-7)(J-6)

Step-by-step explanation:

=j^2– 13j + 42.

=j^2– 6j-7J + 42.

=J(J-6) - 7( J-6)

=(J-7)(J-6)

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Use the quadratic formula to find the solutions to the equation x^2-3x+1=0

Gnom [1K]

Answer:

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Step-by-step explanation:

Using:

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we will have two solutions.

x^2-3x+1=0

So, a=1 b=-3 c=1

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3 years ago

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dem82 [27]

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2 years ago

If 50% of a number is 150 and 30% of the same number is 90, find 80% of that number.

Alexandra [31]

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Step-by-step explanation:

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3 years ago

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2 years ago

Last year, Kevin had 20,000 to invest. He invested some of it in an account that paid 6% simple interest per year, and he invest

tester [92]

$13,000 was invested at 6% whereas $7,000 was invested at 10% using simple interest approach

What is simple interest?

Simple interest is determined as the amount invested multiplied by the interest rate and the number of years that investment lasts.

I=PRT

I=interest

P=principal

R=rate of return

T=time

Let X be the amount invested at 6%

I at 6%=6%*X*1

I=0.06X

The amount invested at 10% is 20,000-X

total interest=0.06X+0.10*(20000-X)

total interest=1,480

1480=0.06X+0.10*(20000-X)

1480=0.06X+2000-0.10X

1480-2000=0.06X-0.10X

-520=-0.04X

X=-520/-0.04

X=13,000

13,000 was invested at 6%

amount invested at 10%=20,000-X

amount invested at 10%=20,000-13,000

amount invested at 10%=7,000

Find out more about simple interest on:brainly.com/question/20690803

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4 0

1 year ago

Factor j^2– 13j + 42.​

Factor j^2– 13j + 42.