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Molodets [167]
3 years ago
11

ILL put you as brainliest

Mathematics
2 answers:
Anuta_ua [19.1K]3 years ago
8 0
They all seem to be false.

1^2 = 1
1/2^2 = .25
3/2^2 = 2.25
7/5^2 = 1.96
ICE Princess25 [194]3 years ago
3 0
Just replace x with whatever , and see if it works. If it works then it is a solution; otherwise it's not.

1^2 is not 2
(1/2)^2 isn't 2 either...
and so on
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2-(-8) please answer
zepelin [54]

Answer:

10

Step-by-step explanation:

- and a - equal postive and 8 plus 2 is 10

6 0
2 years ago
Read 2 more answers
What is the slope of the line that passes through the points (6, 4) and (3,8)?
raketka [301]

Answer:

-5/3

Step-by-step explanation:

you have to do slope formula

5 0
3 years ago
A ball is thrown from an initial height of 5 feet with an initial upward velocity of 44ft/s. The ball's height h (in feet) after
Virty [35]

0=44-25t-5t^2

t^2+2t-8=0

(t+4)(t-2)=0

t=-4 (not a solution) or t=2

Answer: after 2 seconds

3 0
3 years ago
For a certain bathtub, the hot water faucet can fill the tub in 12 minutes. The cold water faucet can fill the tub in 8 minutes.
Fofino [41]

If both faucets are used together, it time taken by them to fill the tub is 4.8 minutes.

<h3>What is the concept of time and work?</h3>

Time and work share a fundamental idea in common with other arithmetic topics, namely the idea of proportionality.

When the amount of work is constant, efficiency is inversely proportional to the length of time required.

Important Time and Work Formula:

  • Work Done = Time Taken × Rate of Work.
  • Rate of Work = 1 / Time Taken.
  • Time Taken = 1 / Rate of Work.
  • If a piece of work is done in x number of days, then the work done in one day = 1/x.
  • Total Wok Done = Number of Days × Efficiency.
  • Efficiency and Time are inversely proportional to each other.

Calculation for the time taken by both faucet to fill the tub.

The unit should be tub per minute.

Then, do the reciprocal of the result to have minute per tub.

The hot water faucet can fill the tub in 12 minutes.

The cold water faucet can fill the tub in 8 minutes.

The filling rate for both faucets filling the tub at the same time is the sum of their rates.

Let 't' be the time taken by both faucets.

Then,

\frac{1}{12} +\frac{1}{8} =\frac{1}{t}

\frac{8+12}{8*12} =\frac{1}{t}

\frac{1}{t} =\frac{20}{96}

\frac{t}{1} =\frac{96}{20}

t = 4.8

Therefore, the time taken by both faucets to fill the tub is 4.8 minutes.

To know more about the formula for calculating power, here

brainly.com/question/20290932

#SPJ4

3 0
2 years ago
Excellence Middle School charges $6.25 for students from all grade levels to attend the school dance. If S represents the number
vlabodo [156]
The answer would be b: 6.25(s+g)

you can already cancel out c., as there’s no way it could be 13.50

since it says it’s $6.25 dollars for all grades and you would be trying to find both 7th and 8th graders, you would need to multiply both variables by the amount they need to pay. in this case, $6.25.
6 0
2 years ago
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