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jek_recluse [69]
2 years ago
15

Linear Equations

Mathematics
2 answers:
rjkz [21]2 years ago
7 0

Answer:

C

Step-by-step explanation:

KATRIN_1 [288]2 years ago
4 0

Answer:

C. x = -61/5

Step-by-step explanation:

7(x+5)+4(x+5) = 6x-6

  • First let's multiply the parenthesis parts.

7x+35 + 4x+20 = 6x-6

  • Combine like terms - combine all the x terms and the number terms. 7x + 4x = 11x, 35+20 = 55

11x + 55 = 6x - 6

  • Subtract 6x from both sides

5x + 55 = -6

  • Subtract 55 from both sides

5x = -61

x = -61/5

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Identify the similar triangles them find the x
Alex Ar [27]

Answer:

ADB and ABC are similar

x = 8

Step-by-step explanation:

hypotenuse in ADB = \sqrt{4^2 + 2^2 } = \sqrt{20}

since two triangles are similar,

\frac{2+x}{\sqrt{20} } = \frac{\sqrt{20}}{2}

solving for x, x=8

4 0
3 years ago
Aaliyah made a deposit into an account that earns 6% annual compound interest. After two years the value of account was $11,236.
faust18 [17]

Answer:

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Step-by-step explanation:

4 0
3 years ago
Which of the following describes the square root of 41. 5,6 6,7 20,21 40,42
cestrela7 [59]

Answer:

6,7

Step-by-step explanation:

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3 0
3 years ago
Four times the amount of money in my bank account plus $200 is still two
ioda

Answer:

$700

Step-by-step explanation:

So, I like to extract the information we know and form it into an equation.

So we know that after multiplying what you have in the bank by 4, then add 200 dollars you get two thousand dollars less than a fourth of what's in your dad's bank account.

Your dad has $20,000 in the bank.

Before we write the equation let's find what two thousand less than a fourth of 20,000 is.

20,000/4 = 5,000

Now, 5,000 - 2,000 = 3,000

Ok let's say x is how much money you have

So:

4x + 200 = 3,000

we can isolate the variable by subtracting 200 from both sides

4x = 2,800

then we can divide by 4 on each side

x = 700

so you have $700 in the bank

4 0
3 years ago
-x²-8x-16=0 <br>what is the solutions by solving by quadratic equations ​
Alika [10]

Answer:

x = - 4

Step-by-step explanation:

Given

- x² - 8x - 16 = 0 ( multiply through by - 1 to clear the leading negative )

x² + 8x + 16 = 0 ← this is a perfect square

(x + 4)² = 0 ( take the square root of both sides )

x + 4 = 0 ( subtract 4 from both sides )

x = - 4

6 0
2 years ago
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