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2 years ago

Factorise 4x^2-y^2 please help

Mathematics

1 answer:

kotegsom [21]2 years ago

8 0

Answer:

(2x + y)(2x - y)

Step-by-step explanation:

1. Simplify the square 4x²:

(2x)² - y²

2. Apple the difference of two squares formula <em>x² - y² = (x + y)(x - y)</em>:

(2x + y)(2x - y)

hope this helps!

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Need help on this!! 10 points!!

Reptile [31]

Answer:

Step-by-step explanation:

The change of base formula is

$log_a(b)=\frac{log_{10}b}{log_{10}a}$ so filling in our given:

$log_{13}}(297)=\frac{log_{10}297}{log_{10}13}$ (Note: you do not have to put the base of 10 in the change of base formula because the "normal" base for a log is 10 and that is how your calculator figures it.)

Do this on your calculator to get

$\frac{log297}{log13}=2.2198$ Not sure how many decimal places you needed!

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3 years ago

A laser light, placed 16m from the base of the wall, shines a point on the wall that is 7m up from the ground. At what angle of

user100 [1]

Tanα=opposite/adjacent

tanα=height/distance

tanα=7/16

α=arctan(7/16)°

α≈23.63° (to nearest hundredth of a degree)

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3 years ago

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Contact [7]

Answer:

Step-by-step explanation:

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3 years ago

Simplify. (x^7)^2 Enter your answer in the box. ANSWER QUICKLY PLEASE

DIA [1.3K]

Answer:

$x^{14}$

Step-by-step explanation:

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2 years ago

In circle V, angle WXZ measures 30°. Line segments WV, XV, ZV, and YV are radii of circle V. Circle V is shown. Line segments W

OverLord2011 [107]

Answer:

$arc\ WUX=120^o$

Step-by-step explanation:

The picture of the question in the attached figure

step 1

Find the measure of angle XWV

we know that

The triangle VWX is an isosceles triangle, because has two equal sides (VX=VW)

we have

$m\angle WXZ=30^o$

$m\angle WXV=m\angle WXZ$

$m\angle WXV=30^o$

Remember that an isosceles triangle has two equal interior angles

$m\angle XWV=m\angle WXV$

$m\angle XWV=30^o$

step 2

Find the measure of angle WVX

Remember that the sum of the interior angles in any triangle must be equal to 180 degrees

$m\angle\ WVX+m\angle XWV+m\angle WXV=180^o$

substitute the given values

$m\angle WVX+30^o+30^o=180^o$

$m\angle WVX=180^o-60^o=120^o$

step 3

Find the measure of arc WUX

we know that

$arc\ WUX=m\angle WVX$ ----> by central angle

we have

$m\angle WVX=120^o$

therefore

$arc\ WUX=120^o$

3 0

3 years ago

Read 2 more answers