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3 years ago

HELP me pls....................

Mathematics

2 answers:

maw [93]3 years ago

6 0

Answer:

7x+21

Step-by-step explanation:

hope this helps! :)

Sladkaya [172]3 years ago

5 0

Answer:

The answer is 7(x+3)=7x+21

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Terry is 5 1/3 ft her brother is 3/5 the height of tanning how tall is Tammy's brother

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Step-by-step explanation:

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3 years ago

Expressions in 1 variable If Z=135. 1/3 z+10?

Juli2301 [7.4K]

Answer:

Step-by-step explanation:

We are given the expression:

1/3z+10

We also are given z=135. Since z is equal to 135, we can substitute 135 in for z.

1/3(135)+10

Now, solve according to PEMDAS (Parentheses, Exponents, Multiplication, Division, Addition, Subtraction)

Multiply 135 by 1/3, or divide 135 by 3.

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3 years ago

-5(6 +x)<br> Using distributed property

UkoKoshka [18]

Answer: -30 -5x

Step-by-step explanation:

(-5 times 6) = -30

(-5 times x)= -5x

you could write it as -30 + -5x or -30 -5x it’s the same thing

7 0

3 years ago

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Multiple choice: what is the answer?

adell [148]

Answer:

200kg wt is your answer I think.

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3 years ago

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What is the solution of<br><br>log6x + log6(x + 5) = 2?

exis [7]

Answer:

Doesn't have solution.

Step-by-step explanation:

x ≠ 0; x > 0 (I)

x - 5 > 0

x > 5 (II)

$log_6 x + log_6 (x + 5) = 2 \\\ log_6 [x(x + 5)] = 2 \\\ x^2 + 5x = 36 \\\ x^2 + 5x - 36 = 0 \\\ \Delta = 5^2 - 4.1.(- 36) \\\ \Delta = 169 \\\ \sqrt{\Delta} = \pm 13 \\\ x' = \frac{- 5 + 13}{2} \\\\ x' = 4 \\\ x" = \frac{- 5 - 13}{2} \\\\ x" = - 9$

Then, this expression doesn't have solution.

I Hope I've helped you.

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3 years ago

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