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3 years ago

8

Which method(s) can be used to solve a system of equations? Select all that apply. distributing graphing substitution formulas a

ddition modeling

1 answer:

katovenus [111]3 years ago

6 0

Distributing, formulas, and addition

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The stopping distance d of an automobile is directly proportional to the square of its speed s.

IRINA_888 [86]

Answer:

192 feet is the stopping distance at 48 mph.

Step-by-step explanation:

Set up the proportion $\frac{x}{75} =\frac{48^{2} }{30^{2} }$

x/75 = 2304/900 cross multiply to get 900x = 172800

172800 ÷ 900 = 192

x = 192

3 0

4 years ago

Find the sum (4x-3x^2+5x^3) + (2x^3- 4x^2+x-1)

emmainna [20.7K]

Answer:

$7x^{3} - 7x^{2} + 5x - 1$

7 0

4 years ago

While sitting in the quad on central campus, I counted 9 students riding 2-wheeled mopeds or 3-wheeled scooters, which made a to

storchak [24]

Answer:

9+12=21

hope this helps!!

Step-by-step explanation:

mopeds; 3x3=9 + scotters 6x2=12

hope this helps!!

4 0

3 years ago

PLEASE HELP ME<br><br> given m||n, fine the value of x.<br><br> (X+12)° (4x-7)°

max2010maxim [7]

Answer:

35

Step-by-step explanation:

When the two lines being crossed are Parallel Lines the Consecutive Interior Angles add up to 180°.

So, x + 12 + 4x - 7 = 180.

5x + 5 = 180

5x = 175

x = 35

7 0

3 years ago

Simplify the expression.<br><br> (rt)^12<br> 25 pts

Komok [63]

Answer:

Simplified

Step-by-step explanation:

r12t12

8 0

3 years ago

Read 2 more answers