3 years ago

PLSSS HELP IF YOU TURLY KNOW THISS

Mathematics

1 answer:

vivado [14]3 years ago

6 0

Answer:

6.2e+15

Step-by-step explanation:

Hope this helps!

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What is the length and width of a room that is 60 square meters and has a perimeter of 32 meters

AleksAgata [21]

L = lenght
W = width

$L * W = 60 \\
2L + 2W=32\\\\
L = \frac{32-2W}{2}\\
\frac{32-2W}{2}*W = 60\\
(16-W)*W = 60\\
-W^{2} + 16W -60 = 0\\\\

d = 16^{2} - 4*1*60 = 256 - 240 = 16 \\\\
W1 = \frac{-16+\sqrt{16}}{-2} = \frac{-12}{-2} = 6\\
W2 = \frac{-16-\sqrt{16}}{-2} = \frac{-20}{-2} = 10\\

L1 = 10\\
L2 = 6\\
$

so

{L,W} = {6,10} or {10,6}

but L > W so

L = 10
W = 6

7 0

4 years ago

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xxTIMURxx [149]

Step-by-step explanation:

$-\sqrt5-3\sqrt5=-1\sqrt5-3\sqrt5=(-1-3)\sqrt5=-4\sqrt5$

3 0

4 years ago

What is the probability that you would obtain a sum of 7 or a sum of 11 on the first roll? (Rolling two dice.)

crimeas [40]

Answer:

2/9

Step-by-step explanation:

Total outcome = 36

Sum of 7 = 6

Prob of sum of 7 = 6/36

Sum of 11 = 2

Prob of sum of 11 = 2/36

Prob of sum of 7 or 11 = 6/36+2/36

Prob of sum of 7 or 11 = (6+2)/36

Prob of sum of 7 or 11 = 8/36 = 2/9

5 0

4 years ago

(-8)^-2 / 3^-4 simplify the expression. Write your answer using only positiv exponents.

spin [16.1K]

Answer:

3^4 / 8^2 or 81/64

Step-by-step explanation:

(-8)^-2 / 3^-4 =

= 3^4 / (-8)^2

= 3^4 / 8^2

= 81/64

4 0

3 years ago

Find the circumstances of the circle

Mkey [24]

The meaning of circumference is to find the distance around a circle or in other words perimeter by using the formula C=2πr or C=πd.

On this case it is asked you to find the circumference of a circle with a diameter of 3 meters, so you will use the formula C=2πr.

C=2πr
C=2(3.14)(3)
C=18.84 meters

The circumference of the given circle is 18.84 meters.

8 0

3 years ago