3 years ago

Which of the following is an equivalent expression to -x+5y=15?

Mathematics

1 answer:

8_murik_8 [283]3 years ago

7 0

I think it is b because to me it makes the most sense

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£440 is divided between David, Mark & Henry so that David gets twice as much as Mark, and Mark gets three times as much as H

Lesechka [4]

Mark received £ 132

Solution:

Given that £440 is divided between David, Mark & Henry

Let "d" be the share of david

Let "m" be the share of mark

Let "h" be the share of henry

Total amount is 440

Therefore,

share of david + share of mark + share of henry = 440

d + m + h = 440 ------- eqn 1

David gets twice as much as Mark

d = 2m ----- eqn 2

Mark gets three times as much as Henry

m = 3h

$h = \frac{m}{3}$ ------ eqn 3

Substitute eqn 2 and eqn 3 in eqn 1

$2m + m + \frac{m}{3} = 440\\\\\frac{6m + 3m + m}{3} = 440\\\\10m = 1320\\\\m = 132$

Thus Mark received £ 132

8 0

3 years ago

When the sum of 8 and a certain number is increased by 12, the result is the same as the product of 3 and the number. What is th

Roman55 [17]

ANSWER: The number is 10.
Hope this helps!!

I used the variable n as the number we needed to find. The equation was n + 8 + 12 = 3n

6 0

3 years ago

The function of g(x)=8^2-48+65 written in vertex form is g(x)= 8(x-3)^2-7 what is the vertex of g(x)

Iteru [2.4K]

The vertex is where g(x) = 0
i.e. where 8(x^3)^2-7 is equal to x

who wrote this question, there aRE OBVIOUS errors.

6 0

3 years ago

A 72.9-foot rope from the top of a circus tent pole is anchored to the ground 44.9 feet from the bottom of the pole. What angle

Ilia_Sergeevich [38]

See the attachment.

It is in the attachment (photo)

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3 years ago

Find the y-intercept and slope of the function graph and find the equation for the function

FrozenT [24]

Answer:

y=-x+5 the y intercept is 5 and the slope is -1

Step-by-step explanation:

7 0

2 years ago