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3 years ago

Simplify x + 8x - 3x

Mathematics

1 answer:

malfutka [58]3 years ago

5 0

Answer:

Step-by-step explanation:

BODMAS

8x + x = 9x

9x - 3x = 6x

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Simplify: 13.6 – 4.1 – 3.8 + 6.7

blsea [12.9K]

Answer:

12.4 this is the answer

13.6-4.1=9.5

-3.8+6.7=2.9

9.5+2.9=12.4

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2 years ago

A certain college graduate borrows $5900 to buy a car. The lender charges interest at an annual rate of 10%. Assuming that inter

Katena32 [7]

This is the answer to your question

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2 years ago

A bowling ball has a diameter of 8.5 inches. If it is rolled down a 60 foot bowling lane, how many complete revolutions will it

Lemur [1.5K]

Answer:

Step-by-step explanation:

12 in = 1 ft

first you need to convert 60ft to in:

60 * 12 = 720in

then divide 720(the amount of space you are covering by 8.5

720/8.5 = 84.7

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3 years ago

Solve each equation 3x^2=80

Lapatulllka [165]

Answer:

$x = \frac{4\sqrt{15}}{3}, x = \frac{-4\sqrt{15}}{3}$

$x = \frac{\pm4\sqrt{15}}{3}$

Step-by-step explanation:

Hello!

Use the quadratic formula: $x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}$

First, let's convert our equation to standard form of a Quadratic: ax² + bx + c = 0

3x² = 80

3x² - 80 = 0

Note, thats the value of b will be 0, as there is no "bx"

Now, solve:

$x = \frac{-(0) \pm \sqrt{(0)^2 - 4(3)(-80)}}{2(3)}$ Plug in values
$x = \frac{\pm\sqrt{960}}{6}$ Simplify the radical (Discriminant)
$x = \frac{\pm8\sqrt{15}}{6}$ Pull out perfect squares
$x = \frac{4\sqrt{15}}{3}, x = \frac{-4\sqrt{15}}{3}$ Reduce factors

The solutions are $x = \frac{4\sqrt{15}}{3}, x = \frac{-4\sqrt{15}}{3}$

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2 years ago

What is the average rate of change from x = −1 to x = 1? −4 −2 2 4

UkoKoshka [18]

The answer of average rate o change is 2. Hope it help!

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3 years ago