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3 years ago

What value of x will make the equation below true 11 - (x - 2) equals 3

Mathematics

1 answer:

siniylev [52]3 years ago

3 0

The answer is 10 because if x is 10 the answer would be 8 then 11-8=3

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A philanthropic organization helped a town in Africa dig several wells to gain access to clean water. Before the wells were in p

Romashka [77]

Answer: -1.5

Step-by-step explanation:

When population standard deviation is known, then the formula to find the z-test statistic for population mean is given by :-

$z=\dfrac{\overline{x}-\mu}{\dfrac{\sigma}{\sqrt{n}}}$

, where n= Sample size.

$\mu$ = Population mean

$\overline{x}$ = Sample mean

$\sigma$ = Population standard deviation.

As per given , we have $\mu=120$ (average infants contracted typhoid each month)

$\sigma=40$

n= 4 (No. of months)

$\overline{x}=90$

Then , the value of the appropriate test statistic will be :

$z=\dfrac{90-120}{\dfrac{40}{\sqrt{4}}}$

$z=\dfrac{-30}{\dfrac{40}{2}}$

$z=\dfrac{-30}{20}$

$z=-1.5$

Hence, the value of the test statistic = -1.5

8 0

3 years ago

Help plz:))) I’ll mark u brainliest

sergey [27]

I think d but I’m not sure

4 0

2 years ago

What is 3 tenths greater than 80%

elena-14-01-66 [18.8K]

we know that

$3$ tenths is equal to

$\frac{3}{10} =0.30$

$80$ % is equal to

$\frac{80}{100} =0.80$

$3$ tenths greater than $80$ % is equal to add

$0.30+0.80=1.10$

therefore

the answer is

$1.10$

6 0

3 years ago

Read 2 more answers

What the difference in temperature is

Alexandra [31]

The answer would be a positive 15.1 or +15.1 because the positive number is greater than the negative which would make your answer positive, thats why you got it wrong :)

6 0

3 years ago

3. In the expression 362 + 6, what will be the place value of the first digit of the quotient?

Hunter-Best [27]

Answer:

B. It will be the tens place because 6 is greater than 3.

Step-by-step explanation:

Since the question said "quotient," then I believe we have 362 ÷ 6 and not "362 + 6."

If we work on the quotient we have

$60\frac{1}{3}$

Obviously, the first digit in the quotient is 6 and it takes the place of tens.

Looking at the options, option B fits the most because 6 is actually greater than 3.

Therefore, the answer is option B, It will be the tens place because 6 is greater than 3.

4 0

2 years ago

What value of x will make the equation below true 11 - (x - 2) equals 3​

What value of x will make the equation below true 11 - (x - 2) equals 3