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3 years ago

What is the value of 3-(-2)

Mathematics

2 answers:

Vanyuwa [196]3 years ago

6 0

Answer:

Step-by-step explanation:

3-(-2)=5

pishuonlain [190]3 years ago

4 0

Answer:

Step-by-step explanation:

It becomes 3+2 because the negatives cancel out.

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A certain food has a gluten of 13mg of gluten per L of the food. What is the gluten ratio in microgram per millimeter?

mel-nik [20]

The gluten ratio is 13 μg/mL. There is avery complex formula. Do you need it?

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4 years ago

If m∠NOP = 24° and m∠NOQ = 110°, what is m∠POQ?

andrew11 [14]

Correct answer for the above question is - option B. 86°

Step-by-step explanation:

Given:

∠NOP = 24°

∠NOQ = 110°

∠NOP and ∠POQ are adjacent angles

To Find:

∠POQ = ?

Solution:

Hereby, we can say that ∠POQ lies between line OQ and ON as given (∠NOP and ∠POQ are adjacent angles )

∠NOQ - ∠NOP = ∠POQ

∠POQ = 110° - 24°

∠POQ = 86°

Angle POQ is 86°

Thus we can conclude option B as correct answer.

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3 years ago

What is the sum of? A. S=1.5 B.S=2 C.S=4.5 D.=8

sweet [91]

8. You can graph this or use the summation function on the TI computer.

5 0

3 years ago

Read 2 more answers

Identify the 8th term of the geometric sequence in which a3 = 16 and a6 = −128

Dafna1 [17]

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4 years ago

A researcher wishes to estimate, with 99% confidence, the population proportion of adults who think the president of their co

scoray [572]

Answer:

a. n=4148

b. n=3909

c. The sample size is smaller if a known proportion from prior study is used. The difference in sample sizes is 239

Step-by-step explanation:

a. For sample where no preliminary estimate is given, the minimum sample size is calculated using the formula:

$n=p(1-p)(\frac{z}{ME})^2$

Where:

$ME=$ Margin of error
$p=$ is the assumed proportion

#Let p=0.5, substitute in the formula to solve for n:

$n=0.5(1-0.5)\times (2.576/0.02)^2\\\\=4147.36\approx 4148$

Hence, the minimum sample size is 4148

b. If given a preliminary estimate p=0.38, we use the same formula but substitute p with the given value:

$n=p(1-p)(z/ME)^2\\\\=0.38(1-0.38)(2.576/0.02)^2\\\\=3908.47\approx3909$

Hence, the minimum sample size is 3909

c. Comparing the sample sizes from a and b:

$n_{0.5}>n_{0.38}\\\\n_{0.5}-n_{0.38}=4148-3909=239$

Hence, the actual sample size is smaller for a known proportion from prior a prior study.

8 0

4 years ago