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pochemuha
3 years ago
14

I have 2 questions that I need help with if someone could please help me step by step to figure out how to do this equation it w

ould be very helpful. Thank you
1. Suppose y varies directly with x and, y=15 and x=5. Write a direct variation equation that relates x and y. What is the value of y when x=9?
2. Write the equation in standard form using integers (no fractions or decimals.): y=-2/3x-1
I'm not really sure at all with this one is it y=-2/3(0)-1 Thank you
Mathematics
1 answer:
mina [271]3 years ago
3 0
The statement " <span>y </span><span>varies directly as </span><span>x </span><span>," means that then </span><span>x </span>increases,<span>y </span><span>increases </span><span>by the same factor so we have: y/x=k
for question 1 then: 15/5=3
so the direct variation equation is y=3x
Now if x=9 you only have to replace x in your equation and you get:
y=3*9=27</span>
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MrRa [10]

Answer:

C. (1/2)acsinA

Step-by-step explanation:

Given is that, A, B, and C are the measures of the angles of a triangle and a, b, and c are the lengths of the sides opposite the corresponding​ angles.

So, the expression that does not represent the area of the​ triangle is :

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4 years ago
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3 years ago
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Answer: There is no change in the number of state representatives for fourth state after the last census.

Step-by-step explanation:

Here, the Data set {+4,-1,-2,0} shows a change in number of state representatives for four states after the last census.

In the first state the changes is +4, that is, there is an increase of the number of representative in first state by factor four.

In the second state the changes is -1, that is, there is an decrease of the number of representative in second state by factor one.

In the third state the changes is -2, that is, there is an decrease of the number of representative in second state by factor two.

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4 0
3 years ago
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pshichka [43]

The numbers that add up to 105 if one is 13 more than the other one is

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3×1=3

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3×3=9

....

3×50=150

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