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Amiraneli [1.4K]
3 years ago
13

A number subtracted from 90 is 3 times that number

Mathematics
2 answers:
OleMash [197]3 years ago
7 0
90-n=3n hope this helps you
Harlamova29_29 [7]3 years ago
3 0
The equation is 90-n=3n but then to solve it you add n to both sides to get the variable on one side so then
90-n=3n becomes 90=4n and n=22.5
so the number is 22.5
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Write the equation of the line that passes through the points (-6,5) and (3,−5). Put your answer in fully reduced point-slope fo
elena55 [62]

Answer:

\displaystyle y-5=-\frac{10}{9}(x+6)

Or:

\displaystyle y+5=-\frac{10}{9}(x-3)

Step-by-step explanation:

We want to write the equation of a line that passes through the points (-6, 5) and (3, -5) in point-slope form.

Point-slope form is given by:

y-y_1=m(x-x_1)

Thus, first, we need to find the slope. We can use the slope formula:

\displaystyle m=\frac{\Delta y}{\Delta x}=\frac{(-5)-(5)}{(3)-(-6)}=\frac{-10}{9}=-\frac{10}{9}

Next, we can use either of the two given points. I'll use (-6, 5). So, let (-6, 5) be (<em>x₁, y₁</em>). Substitute:

\displaystyle y-(5)=-\frac{10}{9}(x-(-6))

Or, fully simplified:

\displaystyle y-5=\frac{-10}{9}(x+6)

Using the other point, we will acquire:

\displaystyle y-(-5)=-\frac{10}{9}(x-(3))

Or, simplified:

\displaystyle y+5=-\frac{10}{9}(x-3)

8 0
3 years ago
I need to write an even number between 7 and 16 draw a picture an them write a sentence to explain why it is an even number
serious [3.7K]
An even  number is a number that is divisible by 2.
This means that dividing this number by 2 yields no remainder (the remainder is zero).

The even numbers between 7 and 16 are:
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5 0
3 years ago
Read 2 more answers
10 pt
lord [1]

Answer:

C. 434π

Step-by-step explanation:

Given:

Radius (r) = 7 in.

Height (h) = 24 in.

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S.A = 2πrh + 2πr²

Plug in the values

S.A = 2*π*7*24 + 2*π*7²

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3 years ago
What is 1/2 in a decimal form
Umnica [9.8K]
1/2 as a decimal is 0.5 or .5
3 0
3 years ago
Read 2 more answers
One fourth the sum of x and ten is identical to x minus 4."
Lynna [10]

Answer and Step-by-step explanation:

We are given the word format of an equation.

Let's right it out in numerical form.

\frac{1}{4} (x + 10) = x - 4

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In this case, identical would mean equal to.

So, \frac{1}{4}(x + 10) would be = to something.

It says that it is identical to x minus 4 (x - 4).

\frac{1}{4} (x + 10) = x - 4<u> is the equation.</u>

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3 years ago
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