3 years ago

Write as an algebraic expression and then simplify if possible:

Mathematics

1 answer:

Otrada [13]3 years ago

8 0

Answer:

2n-7

Step-by-step explanation:

"7 less than twice a number n"

is the same as

"7 less than (twice a number n)".

I put ( ) around that one part because I want you to focus on that part first.

Twice a number n means 2 times that number n or 2n.

So now we have

"7 less than 2n".

This means 2n-7.

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A 120 lb. person would weigh about 20 lb. on the earth's moon. A 150 lb. person would weigh 28 lb. on Io, a moon of Jupiter. Whi

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Answer:

Step-by-step explanation:

Earth's moon makes a person weigh about 1/6 of their Earth weight. Io makes a person weigh more than that, because 1/6 of 150 pounds is 25 pounds.

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4 years ago

Which constants can be multiplied by the equations so one variable will be eliminated when the systems are added together?

nordsb [41]

The first to solve x, because it eliminates y. Third one to solve y, because it eliminates x.

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3 years ago

What is the solution to this equation?

MrRissso [65]

Here, √x = 0.5
Squaring on both sides,
(√x)² = (0.5)²
x = 0.25

In short, Your Answer would be Option C

Hope this helps!

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3 years ago

Read 2 more answers

write one way or representing the equation of the given line in point-slope form. then write the equation in slope-intercept for

ehidna [41]

Answer:

$y + 1 =-\frac{5}{3}(x-1)$

$y = -\frac{5}{3}x + \frac{2}{3}$

Step-by-step explanation:

To write the equation of a line you need a point and a slope. Use the two points given to find the slope.

$m = \frac{-1 - 4}{1--2} = \frac{-5}{3}$

Substitute m = -5/3 and the point (1,-1) into the point slope form.

$y - y_1 = m(x-x_1)\\y --1 = -\frac{5}{3}(x-1)\\y + 1 =-\frac{5}{3}(x-1)$

Use the distributive property to convert to slope intercept form.

$y + 1 = -\frac{5}{3}x + \frac{5}{3}\\y = -\frac{5}{3}x + \frac{5}{3} - 1\\y = -\frac{5}{3}x + \frac{2}{3}$

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3 years ago

Please help<br> find BC in this

ryzh [129]

<span>Which angle do you want?</span>

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4 years ago