3 years ago

− 3x − 30 = 5x + 18

1 answer:

6 0

In the second and third line, where 3x was taken off both sides. On the left -3x-3x should have given -6x.
3x should have been added to both sides in order to cancel out the -3x

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Solve the inequality for x= 1 + 2x > -23

IgorLugansk [536]

Answer:

x = -12

Step-by-step explanation:

1 + 2x > -23

-1

2x > -24

x < -12

8 0

3 years ago

If DE = 7x + 3 and EF = 9x - 19,<br> then EF = ?

ANEK [815]

Answer:

Step-by-step explanation:

7x + 3 = 9x - 19

-2x + 3 = -19

-2x = -22

x = 11

DE= 7(11) + 3 = 77 + 3 = 80

EF = 9(11) - 19 = 99 - 19 = 80

80 + 80 = 160 for DF

6 0

3 years ago

Write the equation of the function of a parabola with vertex at (–1,–2) and a point (1,–6) that lies on the curve.

Olenka [21]

Answer:

f(x) = -(x + 1)² - 2

Step-by-step explanation:

f(x) = a(x - h)² + k

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-6 = a(4) -2

-4 = 4a

a = -1

f(x) = -(x + 1)² - 2

4 0

3 years ago

4 red marbles, 6 blue marbles, and 9 yellow marbles. what is the ratio of red marbles to blue marbles

Anna35 [415]

Answer:

4:6

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

What is the answer for both of these questions? I really need help

joja [24]

Answer:

thats what your brain is for

Step-by-step explanation:

3 0

3 years ago