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Dimas [21]
3 years ago
6

What is the direct variation equation if f(x) varies directly with x and f(x)=−18 when x = 3?

Mathematics
1 answer:
kondor19780726 [428]3 years ago
8 0

Answer:

your answer is B becausewe can find k when given any point by dividing the y-coordinate by the x-coordinate. For example, if y varies directly as x, and y = 6 when x = 2, the constant of variation is k = - 3.

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Need some help with this question in the image<br><br>Cheers​
iren [92.7K]

Step-by-step explanation:

a) 24.7×52.3=1291.81

On rounding off to 3 significant digits we get

1290

b)

\sqrt{ {42}^{2} -  {28}^{2}  }

\sqrt{1764 -784 }  =  \sqrt{980}

=31.304951

On rounding off to 5 significant figures we get

=31.305

c)

\sqrt[3]{78}  = 4.27265

On rounding off to 2 significant figures we get

=4.3

Hence required answers

a)1290

b)31.305

c)4.3

I hope it helped you

5 0
2 years ago
When is a sum of a geometric sequence finit and when is it infinite?
Olin [163]
Hopefully this will help you

3 0
4 years ago
I NEED HELP MAN PLEASE!!!! nobody is helping rn ):
igor_vitrenko [27]
B is the first term
c is the common ratio

if the first term is x and the 2nd is y then x times c=y

so
-5 times what=10?
what=-2
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-5(-2)^(n-1)

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8 0
4 years ago
What is 154 ÷ 10? A. 0.154 B. 1.54 C.15.4 D.154
Bezzdna [24]

Answer:

15.4

Step-by-step explanation:

154 / 10 = 15.4

If you're ever dividing any number and it isn't a multiple of 10 you just move the decimal over to the left once.

5 0
3 years ago
Read 2 more answers
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professor190 [17]
2x -9 = 15 2x = 24 x = 12
6 0
3 years ago
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