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4 years ago

HELP NOW THIS IS 10 POINTS! The length of a rectangle is twice its width. If the width is 10, what is the area?

Mathematics

2 answers:

Ganezh [65]4 years ago

5 0

The answer is 20......

Jobisdone [24]4 years ago

5 0

Answer:

200 is the area, considering to find the area of a rectangle, you must multiply the length times the width.

Step-by-step explanation:

width 10

length 20 (two times width, 20)

10 x 20 = 200

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What fraction of an hour is 33 minuets in the simplest form

zhannawk [14.2K]

Ok.

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Hope this helps.

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3 years ago

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If a² + b² = z and ab = y, which of the following is equivalent to 4z + 8y? Show all the steps.

Ivenika [448]

Answer:

The answer to your question is: (2a + 2b)²

Step-by-step explanation:

a² + b² = z

ab = y

Which is equivalent to 4z + 8y ?

Substitution

4(a² + b²) + 8(ab)

Simplify 4a² + 4b² + 8ab

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4 years ago

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How to turn this equation: <br> y= -1.02(x-3)^2+9.25<br> into factored form

MatroZZZ [7]

Answer:

$y=(102x-306-5\sqrt{3774})(102x-306+5\sqrt{3774})$

Step-by-step explanation:

You first equate it to zero to get:

$-1.02(x-3)^2+9.25=0$

Then solve using square root method

$-1.02(x-3)^2=-9.25$

$(x-3)^2=\frac{-9.25}{-1.02}$

$(x-3)^2=\frac{925}{102}$

$x=3\pm\sqrt{\frac{925}{102}}$

$x=3\pm{\frac{5\sqrt{3774}}{102}}$

$x={\frac{306\pm5\sqrt{3774}}{102}}$

Now work it backwards

$102x-(306\pm5\sqrt{3774})=0$

$(102x-306-5\sqrt{3774})(102x-306+5\sqrt{3774})=0$

Hence the factored form is:

$y=(102x-306-5\sqrt{3774})(102x-306+5\sqrt{3774})$

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3 years ago

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4 years ago

Nina has a job repairing sailboats. To repair a sailboat, she charges a flat fee of $100 plus $40 per hour. The total in dollars

vekshin1

Answer:

y=100+40x

Step-by-step explanation:

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4 years ago