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3 years ago

What is X in this equation.7x+23=-6x-42Please Explain.

Mathematics

2 answers:

marysya [2.9K]3 years ago

8 0

Answer:

Step-by-step explanation:

The ones with the x always go on the left side and the ones without x always go on the right side.
Every time they change side + changes into - and the other way around.

So now it looks like this 7x + 6x = -42 - 23. When you solve 7x +6x and - 42- 23 it should look like this 13x = -65 now all you need to do is to divide 65 with 13 and you'll get x = 5.

I hope this helps :)

allochka39001 [22]3 years ago

4 0

X:-19 I hope this help you.

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If m < 0 and b > 0, the graph of y = mx + b does not pass through which quadrant?

stiks02 [169]

Answer:

Quadrant III

Step-by-step explanation:

The attached picture shows graph of 4 such linear functions with the conditions given in the problem. ALL of them DO NOT pass through Quadrant III.

The graphs shown are of the functions:

$y=-2x+1$

$y=-3x+3$

$y=-x+0.5$

$y=-5x+2$

<em>So, any linear function of the form $y=mx+b$ with $m$ and $b>0$ does not pass through Quadrant III. Answer choice 3 is correct.</em>

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3 years ago

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evablogger [386]

Answer:

B.77.4%

Step-by-step explanation:

Mean wage (μ) = $4.50

Standard deviation (σ) = $0.50

For nay given salary X, the z-score is given by:

$z=\frac{X-\mu}{\sigma}$

For X = $3.75, the z-score is:

$z=\frac{3.75-4.50}{0.50}\\z=-1.5$

For X = $5.00, the z-score is:

$z=\frac{5.00-4.50}{0.50}\\z=1$

A z-score of -1.5 corresponds to the 6.68th percentile, while a score of 1 corresponds to the 84.13th percentile. Therefore, the percentage of workers getting paid between $3.75 and $5.00 an hour is:

$P=84.13-6.68\\P=77.45\%$

The answer is alternative B.77.4%

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3 years ago

Which expressions are equivalent to 4b

Lena [83]

c and b are your answers

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3 years ago

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Length width height equals to 62, what is the maximum volume

joja [24]

Assuming that the given shape is a cuboid,

volume=l×w×h

v=s³ (since cuboids have same length, they have same side length)

62=s³
∛62=s
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Hope I helped :)

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3 years ago

What is the least common denominator for 5,6,and7?

olga nikolaevna [1]

Answer:

210

Step-by-step explanation:

5 is a prime number, 6 = 2·3 and 7 is a prime number. Since those number do not have common factors, the least common multiple will be their product:5·6·7 = 210 . Given fractions are already in order from least to greatest.

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3 years ago

What is X in this equation.7x+23=-6x-42Please Explain.​

What is X in this equation.7x+23=-6x-42Please Explain.