MATHEMATICS COLLEGE

Distribute 2(-3x+3x)

Answers

Answer 1

Answer:

Answer:

$-6x+6x$

Step-by-step explanation:

Start with:

$2(-3x+3x)$

Distribute by multiplying:

$(2)(-3x) = -6x$

$(2)(3x)=6x$

You're left with:

$-6x+6x$

Answer 2

Answer: (2) (-3x) + (2) (3x) please mark me the brainliest

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Answers

Answer:

its c trust me :)

Step-by-step explanation:

Do phone surveys provide adequate coverage of households with respect to one particular parameter? The parameter is the proportion of households without children. If telephone surveys provide adequate coverage of households, then p , the proportion of households without children in the set of all future samples reached by phone, must be equal to the proportion of households without children in the population of all households. Suppose that Thomas, a market analyst, contacts a simple random sample of 300 households as part of a national telephone survey. Of the households contacted, 129 households, or 43 %, have no children and 57 % have at least one child. The most recent census indicates that 48 % of all households have no children and 52 % have at least one child.

Answers

Complete Question

The complete question is shown on the first uploaded image

Answer:

Based on the result of his test , Thomas should fail to reject null hypothesis at a significance level of 0.01. Thomas sufficient evidence to conclude that the proportion of households without children in the set of all future samples reached by phone is not equal to the proportion of households without children in the population of all households.

Step-by-step explanation:

From the question we see that the p-value is greater than the level of significance (0.01 )so we fail to reject the null hypothesis.

This means that Thomas has sufficient evidence to conclude that the proportion of households without children in the set of all future samples reached by phone is not equal to the proportion of households without children in the population of all households.

A student is taking a multiple-choice exam in which each question has four choices. Assume that the student has no knowledge of the correct answers to any of the questions.

She has decided on a strategy in which she will place four balls (marked A, B, C, and D) into a box.

She randomly selects one ball for each question and replaces the ball in the box.

The marking on the ball will determine her answer to the question.

There are five multiple choice questions on the exam.

What is the probability that she will get

a. Five questions correct?

b. At least four questions correct?

c. No questions correct?

d. No more than two questions correct?

Answers

Answer:

d no more than two questions correct

Factor each expression by factoring out the common binomial

5a(y + 4) + 8(y + 4)

Answers

Answer:

Factoring the term $5a(y + 4) + 8(y + 4)$ we get $(y+4)(5a+8)$

Step-by-step explanation:

We need to factor the term: $5a(y + 4) + 8(y + 4)$

Factoring:

$5a(y + 4) + 8(y + 4)$

Taking (y+4) common

$(y+4)(5a+8)$

It cannot be further factored.

So, Factoring the term $5a(y + 4) + 8(y + 4)$ we get $(y+4)(5a+8)$

Approximate: log5 4/7
-2.8760
-0.3477
0.7124
1.3738

Answers

Answer:

-0.34772

Step-by-step explanation:

One way of doing this problem is to change the base from 5 to 10.

Use the change of base formula:

log x

log x = ------------

5 log 5

so:

log (4/7) log 4 - log 7

log (4/7) = --------------- = ---------------------

5 log 5 log 5

Note that "log x" above is the common logarithm of x and is to the base 10.

Continuing, we get:

0.60206 - 0.84510 -0.24304

---------------------------- = --------------------- = -0.34772 (This corresponds to

0.69897 0.69897 the second given

answer choice.)

Answer:

b –0.3477

Step-by-step explanation:

I need help with 6x - 8y=9

Answers

First, you need to move the -6x over to the right side of the equation
-8y=6x-9
After that, divide everything by -8 so your final equation will be
y=-6/8x+9\8

Your slope will be -6/8 and your y intercept will be 9/8

6/8 hope this part helps

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