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m_a_m_a [10]
3 years ago
7

Solve the proportion 9/12 = 15/a

Mathematics
1 answer:
evablogger [386]3 years ago
3 0

Answer:

a=20

Step-by-step explanation:

You cross multiply: 9a=180

a=20.

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Vhich equation represents a hyperbola centered at the origin with a vertex at (0, -8) and focus at (0, 10)?
Mademuasel [1]

Answer:

its is ccccc

Step-by-step explanation:

3 0
3 years ago
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Simplify. 17 _ 6 _ 10 Ÿ 2 + 12<br> A. 27.8 <br> B. 59 <br> C. 67 <br> D. _1
Evgesh-ka [11]
17 - 6 x 10 ÷ 2 + 12 = 17 - 60 ÷ 2 + 12 = 17 - 30 + 12 = -13 + 12 = -1
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3 years ago
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Helen and Nicola share some money into the ratio 1:3 , what fraction of the total does Helen have ?
Aneli [31]

Answer:

If we expect that it is respective then Helen will have 25% of the money

Step-by-step explanation:


8 0
3 years ago
Wren recorded an outside temperature of –2°F at 8 a.m. When she checked the temperature again, it was 4°F at 12:00 p.m. If x rep
Ksenya-84 [330]

Answer:

<h2>1.5</h2>

Step-by-step explanation:

We are given two points. Let the points be A and B

A ( 8 , -2 ) ------> ( x1 , y1 )

B ( 12 , 4 ) ------> ( x2 , y2 )

Now, let's find the slope of the given points:

slope \:  =  \frac{y2 - y1}{x2 - x1}

plug the values

=  \frac{4 - ( -2)}{12 - 8}

When there is a ( - ) in front of an expression in parentheses , change the sign of each term in the expression

=  \frac{4 + 2}{12 - 8}

Subtract the numbers

=  \frac{4  + 2}{4}

Add the numbers

=  \frac{6}{4}

Reduce the fraction with 2

=  \frac{3}{2}

= 1.5

Hope this helps..

Best regards!!

8 0
3 years ago
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A square has side length (7x-2) in. What is the area of the square?
Elza [17]
Because the square has similar lengths, the equation would be
(7x-2)(7x-2)
We can use FOIL to solve this:
The area is 49x^2 - 28x + 4 in^2.
4 0
3 years ago
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