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3 years ago

How do you solve equations and check for solutions

2 answers:

5 0

Okay its really easy. equations, you just flip then around like if you have 2x+16=6x, you would subtract 2x from both sides.

16=6x-2x
16=4x
16/4 = x (divide with 4)
4 = x

how you check is you plug in.

2(4)+16=6(4)
8+16 = 24

There you go!

Kobotan [32]3 years ago

3 0

It all depends on the math question but usually you solve for x, then check it. Plug x back in and see if it works. But it all depends on the math problem

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What is the decimal multiplier to increase by 99%? need it now

krek1111 [17]

Answer:

To work out the multiplier, first add or subtract the percentage from 100, then convert to a decimal. Example: we want to add 20% to £110. To work out the multiplier, add 20 to 100, to get 120, and then change it to a decimal (divide by 100) to get 1.2.

meiabatten191 helped me out on this question too.

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3 years ago

Students in a high school mathematics class decided that their term project would be a study of

weeeeeb [17]

The parameter of interest in this scenario is the proportion of all 1,000 students within the school who have "strict" parents or guardians.

<h3>How to calculate a test statistic?</h3>

In Mathematics, the test statistics of a given sample is calculated by using this formula:

$Z=\frac{x\;-\;u}{\frac{\sigma}{\sqrt{n} } }$

<u>Where:</u>

x is the sample mean.

u is the mean.

is the standard deviation.

n is the sample size.

In conclusion, a possible test statistic which can be used to estimate this parameter is the proportion of all students who have "strict" parents or guardians, based on the collected sample.

Read more on test statistic here: brainly.com/question/4621112

#SPJ1

8 0

2 years ago

Five pencils and 4 erasers cost $7.65. Four pencils and 5 erasers cost $7.20.What is the cost of 2 erasers?

Arturiano [62]

I think this is right.. I tried my best. If u get it sorry... I’m very sorry

1. Divide 7.20 by 4 since the 4 are the pencils

2.divide 7.20 by 5 ( 5 represents the erasers )

3. Then finally multiply 1.44 from 7.20/5 and
2 and u get 2.88

8 0

3 years ago

Solve for x:<br> -14x > -3

Alexus [3.1K]

Answer:

x>11

Step-by-step explanation:

-14x>-3

+14 +14

x > 11

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3 years ago

Is ABC-DEC? Explain

iren2701 [21]

It should be C
Have a good day!!

4 0

3 years ago

Read 2 more answers