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3 years ago

What is the answer to 18+2×3

Mathematics

1 answer:

kiruha [24]3 years ago

6 0

The answer is 24, because you first multiply 2x3 it is 6 and then just add it to 18 and that makes 24

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Rewrite (2x+1)(x-2) using the distributive property then simplify

Contact [7]

(2x+1)(x-2) = 2x^2 - 4x +x -2= 2x^2-3x-2

3 0

4 years ago

20% of the total candy in a basket is Reese's chocolate. There are 8 Reese's in the basket. What is the total number of pieces o

Likurg_2 [28]

Answer:

I believe it is 40. I'm not 100% sure though

Step-by-step explanation:

If 20% of the candy is reese's and there are 8 reese's in the basket, to find the answer you must multiply 8 by 5. You multiply 8 by 5 because to get 100% you have to multiply 20% by 5 to get 100%.

6 0

3 years ago

A major metropolitan newspaper selected a simple random sample of 1,600 readers from their list of 100,000 subscribers.

Tpy6a [65]

Answer: $(0.36845,\ 0.43155)$

Step-by-step explanation:

Let p be the population proportion of readers who would like more coverage of local news.

As per given , we have

sample size :=1600

sample proportion : $\hat{p}=40\%=0.40$

The confidence interval for population proportion is given by :-

$\hat{p}\pm z^* \sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}$

From z-table ,

For 99% confidence interval the z-value is 2.576.

Substitute all the values in the above formula , we get

The 99% confidence interval for the proportion of readers who would like more coverage of local news as

$0.40\pm(2.576) \sqrt{\dfrac{0.40(1-0.40)}{1600}}$

$0.40\pm(2.576) \sqrt{\dfrac{0.24}{1600}}$

$0.40\pm(2.576) \sqrt{0.00015}$

$0.40\pm(2.576) (0.0122474487139)$

$0.40\pm0.03155$

$(0.40-0.03155,\ 0.40+0.03155)=(0.36845,\ 0.43155)$

Hence, the 99% confidence interval for the proportion of readers who would like more coverage of local news is $(0.36845,\ 0.43155)$ .

5 0

3 years ago

What is an inequality term

Rom4ik [11]

Answer:

Step-by-step explanation:

in math is means either less than, greater than , or equal to

5 0

3 years ago

Solve the equation for m: 2m + 1 = -3m - 1

Ierofanga [76]

Answer:

m = $\frac{-2}{5}$

Step-by-step explanation:

2m + 1 = -3m - 1 (Given)

2m + 1 + 1 = -3m - 1 + 1 (Addition Property of Equality)

2m + 2 = -3m (Simplify)

2m - 2m + 2 = -3m - 2m (Subtraction Property of Equality)

2 = -5m (Simplify)

$\frac{2}{-5} = \frac{-5m}{-5}$ (Division Property of Equality)

$\frac{-2}{5}$ = m (Simplify)

m = $\frac{-2}{5}$ (Symmetric Property of Equality)

8 0

3 years ago