2 years ago

Which of the following is a solution to the equation 16 = 4x -4 -5 -4 5 16

1 answer:

3 0

The answer is 5

As when u send -4 to the other side the equation will become 4x=20 and x will be equal to 5 after division

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A building 50 ft high casts a 75-ft shadow. Sarah casts a 6-ft shadow. The triangle formed by the building and its shadow is sim

Rom4ik [11]

Make each known side into a ratio like so...
75/6
(Because 75 is the shadow casted by the building, and 6 is the shadow casted by sarah)
and 50/x
(50 is how tall the building is and sarah's height is what needs to be found)
Therefore,
75 50
---- -----
6 x

Do cross products;
50 x 6 = 75 x X
300 = 75x
Divide by 75
x = 4ft

8 0

2 years ago

What is the equation of the line that passes through (-3, -1) and has a slope of 2/5 ? Put your answer in slope-intercept form.

Scrat [10]

Answer:

a. y = 2/5x + 1/5

Step-by-step explanation:

In point-slope form, the equation of a line with slope m through point (h, k) can be written

y = m(x -h) +k

Then a line with slope 2/5 through the point (-3, -1) will have point-slope equation ...

y = (2/5)(x +3) -1

This can be simplified to the desired form: