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3 years ago

7 is the mean proportional between 2 and a number. Find the number, show all work.

Mathematics

2 answers:

erastova [34]3 years ago

7 0

Answer:

24½

Step-by-step explanation:

7 = sqrt(x × 2)

7² = 2x

x = 49/2

Dmitry_Shevchenko [17]3 years ago

4 0

Answer:

Step-by-step explanation:

Follow me please for answering the question

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Solve using elimination. –8x + 6y = –16 –8x + 9y = 8

stira [4]

I think this is right

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3 years ago

Grace needs $45 to go to Six Flags. She has $13. She earns $8 an hour walking dogs. Which

agasfer [191]

Answer: C. 13 + 8x = 45

Step-by-step explanation:

She already has 13 dollars. This would be the b-value in the equation, thus eliminating options A and B because those two feature 13 as the m value.

She earns $8 per hour. Let x = number of hours walking dogs.

Since 8 is the slope, it would be attached to x, thus either C or D would be the correct response

Since Grace is adding 8 dollars per hour, not subtracting, D is incorrect, leaving C to be the correct answer.

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3 years ago

A polynomial function has a zero at 4 (multiplicity 3) and 0 (multiplicity 1). write a function in standard form

kozerog [31]

Y=3x(x-4)
Hope this helps!!

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3 years ago

Read 2 more answers

A truck is rented at $40 per day plus a charge per mile of use. The truck traveled 15 miles in one day, and the total was $115.

Sergio039 [100]

Answer: The equation you will use would be 40x + 15x =115. you're welcome.

4 0

3 years ago

Please help!! I need the answer to the question in the picture!!!!

zloy xaker [14]

Answer:

$\large\boxed{D.\ x=-2(y+3)^2-1}$

Step-by-step explanation:

The equation of a horizontal parabola in the standard form:

$x=a(y-k)^2+h$

(h, k) - vertex

if a > 0, then open right

if a < 0, then open left

We have the vertrex (-1, -3) and the parabola is open left (a < 0).

Therefore the equation of a given parabola could be:

$x=-2(y-(-3))^2+(-1)=-2(y+3)^2-1$

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