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3 years ago

Someone please help me

Mathematics

2 answers:

umka21 [38]3 years ago

7 0

Answer:

D. 8/5 x

Step-by-step explanation:

nata0808 [166]3 years ago

7 0

Answer:

8/5 x

Step-by-step explanation:

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Find the value of x in the parallelogram

const2013 [10]

Answer:

$x=50$

Step-by-step explanation:

we know that

If LM is the midsegment

then

$LM=\frac{1}{2}(AB+DC)$

substitute the given values

$4x+3=\frac{1}{2}(x+8+348)$

Solve for x

$8x+6=(x+356)$

$8x-x=356-6$

$7x=350$

$x=350/7$

$x=50$

3 0

3 years ago

Use differentials to estimate the amount of paint needed to apply a coat of paint 0.07 cm thick to a hemispherical dome with dia

Mademuasel [1]

An hemispherical dome is half a sphere. If the diameter is 60 m, then the radius is 30 m.

We can use differentials to solve this problem because we are adding a thin layer to the original dome, so the volume of the dome in increased by a differential of itself.

This differential volume that the dome is increased is equal to the volume of the coat of paint.

The volume of the dome can be written as:

$\begin{gathered} V=\frac{4\pi}{3}r^3 \\ \frac{dV}{dr}=\frac{4\pi}{3}\cdot3r^2\Rightarrow dV=\frac{4\pi}{3}\cdot3r^2\cdot dr=4\pi r^2\cdot dr \end{gathered}$

Now, we can calculate dV as:

$\begin{gathered} dV=4\pi r^2\cdot dr \\ dV\approx4\cdot3.14\cdot(30m)^2\cdot0.07\operatorname{cm}\cdot\frac{1m}{100\operatorname{cm}} \\ dV\approx12.57\cdot900m^2\cdot0.0007m \\ dV\approx7.92m^3 \end{gathered}$

Answer: the paint needed for this coat is approximately 7.92 m^3

5 0

1 year ago

For each pair of shapes, decide whether or not Shape A is congruent to Shape B. Explain your reasoning.

WINSTONCH [101]

Shape A is congruent to Shape B because If you were to rotate one of the two and flip it the would like up and match.

5 0

3 years ago

Find the slope of the line that contains the following points. e(5,7), f(3,1)

Amanda [17]

Look up online "equation calculator" and it should be the first one to appear, "Symbolab" supper easy way to help you with problems!

3 0

3 years ago

I Need Some Help!!!!!!!!!

ehidna [41]

Answer:

median = 50

difference in the quartiles = 45

Step-by-step explanation:

The median amount is the line in the middle of the box

The median is 50

The difference between the upper quartile and the lower quartile is the difference between the right end of the box and the left end of the box

65-20 = 45

4 0

3 years ago

Someone please help me ​

Someone please help me