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2 years ago

Please help me!! ill mark you as brainliest :)!!

Mathematics

1 answer:

Rzqust [24]2 years ago

7 0

Answer:

x+3=x ( Converse of midpoint theorem)

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What is the equation of a circle centered at the origin with radius 20?

Colt1911 [192]

We know that
the equation of a circle is
(x-h)²+(y-k)²=r²
where
(h,k)-----> is the center
r--------> is the radius

is the center is the point (0,0) and radius r=20
then
(h,k) is (0,0)

(x-0)²+(y-0)²=20²---------> (x)²+(y)²=400

the answer is
the option D.) x2 + y2 = 400

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2 years ago

cube A has volume V. the edges of cube b are three times as long as the edges of cube A. What is the volume of cube b in terms o

Mariulka [41]

Answer:

V=a cube

If i am wrong let me know!

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2 years ago

Please answer asap no trolls

Svetradugi [14.3K]

Answer:

It would probably be 15 actually

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2 years ago

Read 2 more answers

The average height of women between ages 30-39 is 163.2 cm with a standard deviation of 9.3 cm. Find the probability that a woma

Darina [25.2K]

Answer:

D) 0.6346

Step-by-step explanation:

6 0

2 years ago

Air pressure may be represented as a function of height (in meters) above the

denis-greek [22]

Answer: OPTION C.

Step-by-step explanation:

<h3> The complete exercise is: "Air pressure may be represented as a function of height (in meters) above the surface of the Earth, as shown below:</h3><h3> $P(h) =P_0e^{-0.00012h}$ </h3><h3> In this function $P_o$ is the air pressure at the surface of the earth, and $h$ is the height above the surface of the Earth, measured in meters. At what height will the air pressure equal 50% of the air pressure at the surface of the Earth"</h3><h3></h3>

Given the following function:

$P(h) =P_0e^{-0.00012h}$

In order to calculate at what height the air pressure will be equal 50% of the air pressure at the surface of the Earth, you can follow these steps:

1. You need to substitute $P(h)=0.5P_o$ into the function:

$0.5P_o=P_0e^{-0.00012h}$

2. Finally, you must solve for $h$ .

Remember the following property of logarithms:

$ln(b)^a=a*ln(b)\\\\ln(e)=1$

Then, you get this result:

$0.5P_o=\frac{P_o}{e^{0.00012h}}\\\\(0.5P_o)(e^{0.00012h})=P_o\\\\e^{0.00012h}=\frac{P_o}{0.5P_o}\\\\ln(e)^{0.00012h}=ln(2)\\\\0.00012h*1=ln(2)\\\\h=\frac{ln(2)}{0.00012}\\\\h=5576.2$

7 0

3 years ago