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3 years ago

30 = -5(6x+6) solve for x

Mathematics

2 answers:

I am Lyosha [343]3 years ago

4 0

Answer:

x is -2

Step-by-step explanation:

1. write your problem out on a scratch piece of paper

2. distribute your -5 to 6x and that gives you -30x

3. distribute your -5 to your 6 which gives you -30

4. now write down the problem again so that you have 30= -30x - 30

5. add 30 to your 30 on the left of the equals and to the -30 on the right of it

6. now you should have 60 = -30x

7. divide everything by -30

8. finally you should get -2 = x

9. very last flip it so that the x is on the left of the equals sign

Romashka-Z-Leto [24]3 years ago

3 0

Answer:

Step-by-step explanation:

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If g(x) = 3x + 2 and h(x) = 9x2 + 12x + 6, find a function f such that f ○ g = h

Virty [35]

F(g(x)) = f(3x+2) = h(x)=9x^2+12x + 6

Note that (3x+2)^2 = 9x^2 + 12x + 4, which is almost, but not quite, equal to h(x).

Let's experiment. What if f(x) = x^2 + 2?

Then f(3x+2) = (3x+2)^2 + 2 = 9x^2 + 12x + 4 + 2 = 9x^2 + 12x + 6, which is the same as the given h(x).

Thus, f(x) is x^2 + 2.

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4 years ago

How many x-intercepts are in the quadratic equation y = 7x2 − 2x − 1

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Answer:

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3 years ago

The perimeter of a rectangle is 14x - 8 feet. If the width of the rectangle is 5x, what is the rectangle's length?

wariber [46]

Length = 2x+4

Step-by-step explanation:

P=2W+2L

14x+8 =2(5x)+2L

14x+8=10x+2L

14x+8-10x=2L

4x+8=2L

(4x+8)/2=L

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3 years ago

A gym charges a one-time registration fee as well as a monthly fee. The cost of joining the gym for 4 months is $370, and the co

Anna007 [38]

$x-\ registration\ fee\\
y-\ monthly\ fee\\\\
 \left \{ {{x+4y=370} \atop {x+6y=530\ \ |*(-1)}} \right. \\\\
 \left \{ {{x+4y=370} \atop {-x-6y=-530}} \right. \\+-----\\Addition\\\\
-2y=-160\ \ | divide\ by\ -2\\
y=80\\\\
x=370-4y=370-4*80=370-320=50\\\\
Registration\ fee\ is\ equal\ to\ 50\$\ and\ monthly\ fee\ is\ equal\ to\ 80\$.
$

8 0

3 years ago

PLEASE HELP ME OMG!!!

Marta_Voda [28]

Answer:

187.5

Step-by-step explanation:

17 × 5 = 85

100 - 85 = 15% = 0.15

1250 × 0.15 = 157.5

7 0

3 years ago