3 years ago

What is the answer to the problem: Solve (The square root of 2x-7) = 7?

1 answer:

4 0

The equation is
$\sqrt{2x-7}=7\\\text{Elevating to 2 the two sides of the equation we get:}\\2x-7=49\\\text{Therefore:}\\2x=49+7=56\\x=\frac{56}{2}=28\\\text{Solution : }x=28$

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If f(x)=2x^2+3 then f(x-1)=2x^2+4x+5 true or false

TEA [102]

Hello from Hello from MrBillDoesMath!

Answer:

False.

Discussion:

See attached file for discussion.

Thank you,

MrB

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4 years ago

Solve using inverse operations 83+q=125; q=

Vilka [71]

Answer:

Step-by-step explanation:

83+q=125

q=125-83

q=42

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3 years ago

Byeeeeeeeeeeee What is the formula for finding volume of sphere?

Georgia [21]

Answer:

Step-by-step explanation:

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3 years ago

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A Unites States naval submarine began at sea level. It submerged 140 ft and then traveled 40 miles. It dove down an additional 1

kodGreya [7K]

Answer: -231 ft

Step-by-step explanation:

The submarine started at sea level = 0

It submerged 140 ft = -140 ft

It traveled 40 miles horizontally so it is still at -140 ft

It dove down an additional 120 ft = -260 ft (-140 + -120)

It traveled 25 miles horizontally so it is still at -260 ft

It rose 29 ft = -231 ft (-260 + 29)

Note: submerged and dove are negative values and rose is positive

0 - 140 - 120 + 29 = -231

3 0

3 years ago

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Convert 11.42424242 to a rational expression in the form of a/b , where b ≠ 0.

TiliK225 [7]

11.424242
isolate the repeating part
11+0.424242

focus on the repeating part
0.42424242
how many places till it repeats again?
2
let's say it is x
x=0.42424242
multiply by 100
100x=42.424242

subtract them
100x-x=42.42424242-0.42424242
the infinite repeats cancel and we get
99x=42
divide by 99
$x=\frac{42}{99}$

so
$11.\overline{42}=11 \space\ \frac{42}{99}$

5 0

3 years ago

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