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3 years ago

Which expressions represent the difference of exactly two expressions? choose 3 answers.

Mathematics

1 answer:

Kitty [74]3 years ago

6 0

Answer:

A,C and D

in a 6(x + 7)-2

= (6x + 42)-2

c) 4f-2g

d) 3xyz-10

these three options I think

Hope it helps

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P = <br> Ok ty please please

Mars2501 [29]

Answer:

p = -15

Step-by-step explanation:

-2 = (p+9)/3 multiply both sides by 3 to get rid of fraction

-6 = p + 9 subtract 9 from both sides

-15 = p

5 0

3 years ago

Based on the diagram below, BC = 12 and m

Mama L [17]

Answer:

Step-by-step explanation:

tan (40) = x/12

x = 12*tan(40)

6 0

3 years ago

Please I need it for a test

NeTakaya

Answer:

Step-by-step explanation:

there are 3 people who did 32 and there are 3 people who did 50 so it is the same number.

6 0

2 years ago

For an arts and crafts project, a student cut a triangle out of a rectangular piece of paper. If the triangle has a base of 6 in

BartSMP [9]

Area of left over paper=area of rectangle - area of triangle =132-24 =108inches^2

5 0

2 years ago

Suppose a production facility purchases a particular component part in large lots from a supplier. The production manager wants

musickatia [10]

Answer:

We need a sample size of at least 1161.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence level of $1-\alpha$ , we have the following confidence interval of proportions.

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which

z is the zscore that has a pvalue of $1 - \frac{\alpha}{2}$ .

The margin of error for the interval is:

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

For this problem, we have that:

$\pi = 0.22$

90% confidence level

So $\alpha = 0.1$ , z is the value of Z that has a pvalue of $1 - \frac{0.1}{2} = 0.95$ , so $Z = 1.645$ .

How large a sample should she take?

We need a sample size of at least n.

n is found when $M = 0.02$

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

$0.02 = 1.645\sqrt{\frac{0.22*0.78}{n}}$

$0.02\sqrt{n} = 1.645\sqrt{0.22*0.78}$

$\sqrt{n} = \frac{1.645\sqrt{0.22*0.78}}{0.02}$

$(\sqrt{n})^{2} = (\frac{1.645\sqrt{0.22*0.78}}{0.02})^{2}$

$n = 1160.88$

Rounding up

We need a sample size of at least 1161.

7 0

3 years ago