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4 years ago

What was the value of 342000 - 9%=

Mathematics

1 answer:

lutik1710 [3]4 years ago

7 0

Answer:

12641680.

Step-by-step explanation:

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Simplify the expression so there is only one positive power for each base. (5^-2 x 4^-4)^-2

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$(a\cdot b)^n=a^n\cdot b^n\\(a^n)^m=a^{n\cdot m}\\\\(5^{-2}\cdot4^{-4})^{-2}=(5^{-2})^{-2}\cdot(4^{-4})^{-2}=5^{-2\cdot(-2)}\cdot4^{-4\cdot(-2)}\\\\=\boxed{5^4\cdot4^8}\to\fbox{A.}$

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3 years ago

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Evaluate 5x^2 + 2 for x = -1.

iogann1982 [59]

Answer:

Step-by-step explanation:

If x = -1 then we need to plug that into the equation.

5(-1)^2 +2

Then solve for the first part

5(1) + 2

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5 + 2

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3 years ago

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Find the equation of the line in slope intercept form that has a slope of -2 and passes through the point (6,3). Demonstrate tha

DanielleElmas [232]

Answer:

y=-2x+15

Step-by-step explanation:

First, write out the equation in slope-intercept form, with what you already have:

$y=-2x+b$

Let "b" represent the y-intercept.

To find the y-intercept, substitute the point (6,3) in for the "x" and "y" variable of the equation and solve for "b":

$3=-2(6)+b\\3=-12+b\\3+12=-12+12+b\\15=b$

Therefore, your y-intercept is 15.

That means your equation is slope-intercept form <em>is</em> y=-2x+15.

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3 years ago

What is the 25% discount of $120 dollars?

Varvara68 [4.7K]

25% discount of $120
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3 years ago

Com oordon

valina [46]

Answer:

Step 1

Step-by-step explanation:

The problem distributed 2 into x and -4 which resulted in 2x - 8

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3 years ago

What was the value of 342000 - 9%=​

What was the value of 342000 - 9%=