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pantera1 [17]
3 years ago
7

What value of a makes this equation true?

Mathematics
2 answers:
Goshia [24]3 years ago
7 0

9/10=a/30. and value of a is 27

sergeinik [125]3 years ago
4 0

Answer:

27

Step-by-step explanation:

We can use cross products to solve

9          a

----- = --------

10        30

9*30 = 10a

270 = 10a

Divide each side by 10

270/10 = 10a/10

27 =a

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Given the polynomial expression 3x^2 + 3bx - 6x - 6b, factor completely.
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The answer is 3 (x+b) (x-2)



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3 0
2 years ago
Can you help me please everyone is ignoring my questions
galben [10]

Answer:

A= 37 degrees

C= 43 degrees

Step-by-step explanation:

Hey there!

So this question looks a lot more complicated than it really is.

Complementary angles are the same.

Supplementary angles add up to 180 degrees or in other words a straight line.

If A and B are complementary and B equals 37 degrees, than A is also 37 degrees.

To find C, all we would do is subtract 37 from 180 to find the leftover amount.

180-37=43

So, in conclusion:

A= 37 degrees

C= 43 degrees

Hoped this helped! :D

Comment if you have any further questions!

3 0
3 years ago
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If I have 500 animals and gave away 267 how much would I have left
skad [1K]
You will have 233 animals left.
5 0
3 years ago
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Help me with this please
alina1380 [7]
If you assign variables to the problem, it can make things a lot simpler. Lets say chairs are x and tables are y. Therefore you have:
2x+6y=40 
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Now you can isolate the variable of one equation and put it into another (it doesn't matter which. I'm going to manipulate the top equation to plug into the bottom one).
2x=40-6y 
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Now I plug into bottom equatioin:
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Now you can plug in y in either equation to get x. 
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2x=2.5
x=1.25
So it costs $6.25 for each table and $1.25 for each chair. If you think about it, it would make sense for the table to cost more for the chair. 
6 0
3 years ago
2x + y = 6<br> y = 3x + 4 <br> What is the resulting equation?
Aleksandr-060686 [28]
2x+3x+4=6
5x+4=6
5x=2
x=1.5?
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3 years ago
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