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3 years ago

What is 4x+2/39=5x-2/42?

Mathematics

1 answer:

agasfer [191]3 years ago

4 0

ANSWER: 9/91
EXPLANATION:
4x+2/39=5x-1/21
-x+2/39=-1/21
-x=-9/91
x=9/91

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Find the length and width of 4 different rectangles such that each rectangle has an area of 24 square units. Write the length an

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Step-by-step explanation:

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3 years ago

100 POINTS FOR BRAINLIEST! according to the image, whats the answer? Answer wisely for the full 100

stepan [7]

Answer:

Step-by-step explanation:

1. To find the area of a semicircle the formula is

$A=\frac{\pi r^2}{2} \\=\frac{\pi 1^2}{2} \\=6.283m^2$

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$A=a^2=2^2=4m^2\\6.283+4=10.283m^2$

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3 0

3 years ago

Read 2 more answers

Find two matrices A and B such that 2A-3B= [5 0

amm1812

The easy answer: If, say, B is the zero matrix, i.e.

$B=\begin{bmatrix}0&0\\0&0\end{bmatrix}$

then

$2A=\begin{bmatrix}5&0\\-1&2\end{bmatrix}\implies A=\begin{bmatrix}\dfrac52&0\\\\-\dfrac12&1\end{bmatrix}$

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3 years ago

A submarine dives at a constant speed of 10 m/s at a diving angle measured from the vertical

valina [46]

Answer:

155.3 m

Step-by-step explanation:

θ: is the angle measured from the vertical = 75 °

v = is the speed of the submarine = 10 m/s

t = 1 min

The deep of the front end of the submarine at the end of a 1-minute drive is given by the following ratio:

$cos (\theta) = \frac{x}{d}$

<u>Where:</u>

d: is the distance traveled by the submarine in 1 minute

x: is the deep to find

The distance, d, is:

$d = v*t = 10 \frac{m}{s}* 1 min * \frac{60 s}{1 min} = 600 m$

Now, the deep is:

$cos (75) = \frac{x}{600}$

$x = cos(75)*600 = 155.3 m$

Therefore, the deep of the front end of the submarine at the end of a 1-minute drive is 155.3 m.

I hope it helps you!

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3 years ago

In politics, marketing, etc. We often want to estimate a percentage or proportion p. One calculation in statistical polling is t

inessss [21]

Answer: |p-72% |≤ 4%

Step-by-step explanation:

Let p be the population proportion.

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$|p-\hat{p}| \leq E$ , where E = margin of error, $\hat{p}$ = sample proportion

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2 years ago