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3 years ago

Factor this epression 3x^2 - 15x

Mathematics

1 answer:

nika2105 [10]3 years ago

6 0

Answer:

x = 0 and x = 5

Step-by-step explanation:

3x^2 - 15x. the first thing that you do is find a common factor for both of the numbers. The common factor is 3x. so the equation would now be 3x(x-5) = 0. So now all you have to do is plug in for x and make it equal 0.

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What is the equation of the line that passes through (1, 2) and is parallel to the line whose equation is 4x + y +1 = 0?

tamaranim1 [39]

6/9 cs it the right one

6 0

3 years ago

Simplify 6 + 7.2y - 4.2y + 1

jok3333 [9.3K]

Answer:

3y+7

Step-by-step explanation:

6+7.2y+−4.2y+1

(7.2y+−4.2y)+(6+1)

3y+7

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3 years ago

Apyramid was built about 2570 BC. Its original height was 453 feet, 11 inches, but

sweet [91]

Answer:

422.44 feet

Step-by-step explanation:

Let A, B, X, and H represent the left-most observation point, the observation point to its right, the point immediately below the apex, and the height of the apex, respectively.

Then the definition of the cotangent function tells us ...

AX = H·cot(42°)

BX = H·cot(48.85°)

Since the figure tells us AB = 100 feet, we have ...

AB = AX -BX

100 = H·cot(42°) -H·cot(48.85°)

H = 100/(cot(42°) - cot(48.85°)) ≈ 422.44 . . . . ft

The current height of the pyramid is 422.44 feet.

6 0

3 years ago

Read 2 more answers

T-test Statistics

vitfil [10]

Answer:

976thousand

Step-by-step explanation:

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3 years ago

Which reaction displays an example of an Arrhenius base?

vekshin1

Answer:

NaOH(s) --> Na+(aq) + OH–(aq)

Step-by-step explanation:

A basis of Arrhenius is a substance that, when dissolved in an aqueous solution, increases the concentration of hydroxide, or OH-, ions in the solution.

So the answer is :

NaOH(s) --> Na+(aq) + OH–(aq)

8 0

4 years ago