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DENIUS [597]
3 years ago
13

What is 7 im so confused

Mathematics
1 answer:
erastova [34]3 years ago
5 0

Answer:

7 weeks

Step-by-step explanation:

John saves  f(x) = 60+5x

Sarah saves g(x) =x^2 +46

They save the same amount of money

Set the equations equal

60+5x =x^2 +46

Subtract 60 from each side

60+5x -60 =x^2 +46-60

5x= x^2 - 14

Subtract 5x from each side

5x -5x= x^2-5x - 14

0 = x^2-5x - 14

Factor

0 = (x-7) (x+2)

Using the zero product property

x-7=0   x+2 =0

x=7  x=-2

Since we cannot have negative weeks

x=7

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Leviafan [203]

Step-by-step explanation:

Hope the Answer is helpful

3 0
3 years ago
Give the slope and the y-intercept of the line y = x – 4.
Airida [17]

Given:

The equation of a line is

y=x-4

To find:

The slope and y-intercept of the line.

Solution:

We have,

y=x-4          ...(i)

The slope intercept form of a line is

y=mx+b            ...(ii)

Where, m is the slope and b is the y-intercept.

On comparing (i) and (ii), we get

m=1,b=-4

Slope of the line = 1

y-intercept of the line = -4

The coordinate form of y-intercept is (0,b). So, the y-intercept of the given line is (0,-4).

Therefore, the slope of the line is 1 and the y-intercept is (0,-4).

5 0
3 years ago
Factorise 8x^2+20XY-12y
Julli [10]

Answer:

4(2x^2+5xy-3y)

Step-by-step explanation:

4 0
3 years ago
How high is a 30-story building
Sliva [168]
Not all 30-story buildings are the same height. Depends on how tall the ceiling is on each floor. But usually it is around 300 feet
3 0
4 years ago
Jessie has been training for a half-marathon. Jesse trains on a track where each lap is 1/4 of a mile. If Jesse ran 3 1/7 miles,
NISA [10]

Answer:

14.2

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
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