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Luba_88 [7]
3 years ago
14

Find the value of x:

Mathematics
1 answer:
mixer [17]3 years ago
8 0

Answer:

x=9

Step-by-step explanation:

\frac{7x-3}{3x-2} =\frac{28+20}{20} \\\frac{7x-3}{3x-2} =\frac{48}{20} \\\frac{7x-3}{3x-2} =\frac{12}{5} \\36x-24=35x-15\\36x-35x=-15+24\\x=9

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2. If f(x) = x - 7 and g(x) = 2x + 5, then what is f(x) * g(x)?
AysviL [449]

Answer:

2x² - 9x - 35

Step-by-step explanation:

f(x) × g(x) = (x - 7)(2x + 5)

Each term in the second factor is multiplied by each term in the first factor, that is

x(2x + 5) - 7(2x + 5) ← distribute both parenthesis

= 2x² + 5x - 14x - 35 ← collect like terms

= 2x² - 9x - 35

7 0
3 years ago
What is the area in square feet of the ceilling​
yan [13]
That would be a 120 Square Feet.

Use the length of one side of the ceiling, which is 12, and then use the other side that is 10. The ten feet comes from the floor. think of it in 2-Dimensional
8 0
3 years ago
Evaluate 2a - 7 when a=3
Eddi Din [679]

Answer:

-1

Step-by-step explanation:

Just substitute your variable in:

(2)(3)-7

Simplify:

2*3=6

6-7=-1

-1 is your answer.

-Stay golden :)

7 0
3 years ago
An athlete eats 55g of protein per day while training. how much protein will she eat during 25 days of training? write your answ
Triss [41]

55 g x 25 days = 1375 grams

1gram = 0.001 kg

1375 x 0.001 = 1.375 kg

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5 0
3 years ago
Read 2 more answers
Simplify the expression -3(x+3)+4x
Korolek [52]

Answer:

x - 9

Step-by-step explanation:

In this case, "simplify" directs that you 1) carry out the indicated multiplication and 2) combine like terms.

-3(x+3)+4x = -3x - 9 + 4x = x - 9

8 0
3 years ago
Read 2 more answers
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