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2 years ago

Help i will give an award!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Mathematics

2 answers:

Yuki888 [10]2 years ago

8 0

Answer:

x = 3

Step-by-step explanation:

(3^x)^1/2/3^ 1/2 = 3

x = 3

The Kid Laroi

Grace [21]2 years ago

6 0

Answer: Plug in answers work backwards; or learn log to get rid of powers

Step-by-step explanation: save time on your test by cheating yourself of knowledge

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What is the height of the wall that is 30 feet long and that required 2310 bricks to build

Diano4ka-milaya [45]

(2310)=7(30)H
2310=210H

11=H

I hope this helps!

7 0

3 years ago

A piece of rope 20 feet long is cut from a longer piece that is at least 32 feet long. The remainder is cut into four pieces of

algol13

Answer:

smaller pieces must be larger than 3 feet

Step-by-step explanation:

x is the longer piece

x>32

x-20>12

12/4=3

smaller pieces resembled as y

y>3

5 0

3 years ago

Read 2 more answers

Given the equation 5x − 4 = –2(3x + 2), solve for the variable. Explain each step and justify your process.

blagie [28]

A.
$5x-4=-2(3x+2) \ \ \ \ \ \ \ \ \ |\hbox{expand the bracket} \\
5x-4=-2 \times 3x-2 \times 2 \\
5x-4=-6x-4 \ \ \ \ \ \ \ \ \ \ \ \ \ |\hbox{add 6x to both sides} \\
11x-4=-4 \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ |\hbox{add 4 to both sides} \\
11x=0 \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ |\hbox{divide both sides by 11} \\
x=0$

B.
$3(2x-4)=5x-1 \\
6x-12=5x-1 \\
\boxed{11x-12=-1} \Leftarrow \hbox{the first mistake} \\
11x=11 \\
\boxed{x=11} \Leftarrow \hbox{the second mistake}$

Megan's solution isn't correct.
The first mistake: she subtracted 5x from the right-hand side of the equation, but added 5x to the left-hand side.
The second mistake: she divided the right-hand side of the equation by 11, but didn't divide the left-hand side.

The correct solution:
$3(2x-4)=5x-1 \ \ \ \ \ \ \ \ \ \ \ |\hbox{expand the bracket} \\
3 \times 2x+3 \times (-4)=5x-1 \\ 6x-12=5x-1 \ \ \ \ \ \ \ \ \ \ \ \ \ \ |\hbox{subtract 5x from both sides} \\
x-12=-1 \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ |\hbox{add 12 to both sides} \\
x=11$

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3 years ago

Evaluate: Σ10, 8(27-1) =

vfiekz [6]

Answer:

Step-by-step explanation:

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3 years ago

Two-stroke fuel for a lawn mower requires an oil: petrol ratio of 1:40. How much petrol is added to 50ml of oil

bearhunter [10]

1:50 => 1 part oil + 50 parts high-octane gasoline
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3 years ago