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Yuki888 [10]
3 years ago
11

Solve the equation 5(a – 7) + 11 = 2a – 3(a + 4) for a

Mathematics
2 answers:
Lady bird [3.3K]3 years ago
6 0
The answer is a equals 6.
Monica [59]3 years ago
3 0

5(a – 7) + 11 = 2a – 3(a + 4)

5a - 35 + 11 = 2a - 3a - 12

5a - 24 = -a - 12

add a to both sides

5a - 24 + a = -a -12 + a

simplify

6a - 24 = -12

add 24 to both sides

6a - 24 + 24 = -12 + 24

simplify

6a = 12

divide both sides by 6

6a/6 = 12/6

simplify

a = 2

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The lengths of the sides of a triangle are in the extended ratio 7 ​: 8 ​:9 . The perimeter of the triangle is 96 cm. What are t
PIT_PIT [208]

Answer:

28, 32, 36

Step-by-step explanation:

If you multiply each 7, 8, and 9 by 4 you get 28, 32, and 36. The sum of those numbers is 96.

5 0
3 years ago
-4(n - 6) = 12<br><br> Solve the Equation.
Romashka-Z-Leto [24]
-4(n - 6) = 12

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hope that helps, God bless!
3 0
3 years ago
Kiera's dance class starts at 4:30 p.m. and ends at 6:15 p.m. How long is her dance class?
qwelly [4]
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8 0
2 years ago
Read 2 more answers
What is the missing coefficient of the x-term of the product (-x-5)² after it has been simplified?
Mice21 [21]

The missing coefficient of the x-term after finding the product of (-x - 5)², is: C. 10.

<h3>What is the Coefficient of a Variable?</h3>

The coefficient of a variable is the numerical value that comes before the variable and multiplies it.

Find the product of (-x - 5)²:

(-x - 5)(-x - 5)

-x(-x - 5) -5(-x - 5)

x² + 5x + 5x + 25

x² + 10x + 25

The x-term is "10x". The coefficient is: 10.

Learn more about the coefficient of a variable on:

brainly.com/question/16895867

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5 0
2 years ago
What is the reference angle for 7 pi/6?
Mademuasel [1]

Answer:

\frac{\pi }{6}

Step-by-step explanation:

\frac{7\pi }{6} is an angle in the third quadrant

To find the reference angle subtract π from it

reference angle = \frac{7\pi }{6} - π = \frac{\pi }{6}

3 0
2 years ago
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