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2 years ago

Can someone PLEASE answer this and explain I really need help I’ll mark brainliest

Mathematics

1 answer:

svetlana [45]2 years ago

7 0

Answer:

Michael = x÷7

lee = 2(x÷7)

(x÷7)+2(x÷7)

Step-by-step explanation:

since he earns x dollars every seven days, to get the amount he earns, you divide that amount by 7 and for Lee, she gets twice as much so you multiply Michael's amount by 2

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Determine whether the relation is or is not a function.

soldier1979 [14.2K]

Answer:

Not a function because it does not pass the Vertical Line Test.

5 0

3 years ago

1. According to the graph, how many hours a day does the average teenager spend at school.

Harrizon [31]

An average of 6 hours per day

3 0

3 years ago

Which equation is the inverse of 2(x-2)squared=8(7+y)

dsp73

Answer:

$f^{-1}(x)=2(+/-)2\sqrt{(7+x)}$

Step-by-step explanation:

we have

$2(x-2)^{2}=8(7+y)$

step 1

Exchange x for y and y for x

$2(y-2)^{2}=8(7+x)$

step 2

isolate the variable y

$(y-2)^{2}=4(7+x)$

take the square root both sides

$y-2=(+/-)\sqrt{4(7+x)}$

$y=2(+/-)\sqrt{4(7+x)}$

step 3

Let

$f^{-1}(x)=y$

$f^{-1}(x)=2(+/-)\sqrt{4(7+x)}$

$f^{-1}(x)=2(+/-)2\sqrt{(7+x)}$ ----> equation of the inverse

5 0

3 years ago

What the answer y-8=-2 (x-7)

Kamila [148]

The answer is:
Solve for y in the first equation
y=−5
y=8−x

Replace all occurrences of y with the solution found by solving the last equation for y. In this case, the value substituted is −5y=−5(−5)=8−x

Remove parentheses.y=−5−5=8−x

Solve for x in the second equation.y=−5
x=13
The answer is (13,−5) Please mark as Brainliest

5 0

3 years ago

What is the y-intercept, axis of symmetry and vertex of the following function?

Irina18 [472]

Answer:

Y-Intercept: -5

Axis of symmetry: -1

Vertex: (-1,-2)

Step-by-step explanation:

Y- intercept is is always the number without a variable

Axis of symmetry is the x cordirant of the vertex

Vertex: You can turn the equation into vertex form

(photo example below) (IMPORTANT: once you turn your equation into vertex form, remember that the number inside the prencencys has to be turned to the opposite sign (-/+) when you put it as a coordinate)

8 0

2 years ago