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larisa [96]
3 years ago
14

Factorise fully 3x+18​

Mathematics
1 answer:
Nana76 [90]3 years ago
5 0

Find the Greatest Common Factor (GCF)

GCF = 3

Factor out the GCF. (Write the GCF first, and then in parenthesis, divide each term by the GCF)

3(3x/3 + 18/3)

Simplify each term in parenthesis

<u>= 3(x + 6)</u>

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7. A=15; b= (blank); c= 17
kondor19780726 [428]

Answer:b is 16

Step-by-step explanation:a is 15 and c is 17. So what comes in between those numbers, exactly 16

6 0
3 years ago
Which set of population data is the least dispersed from its mean? 2, 3, 2, 9 4, 0, 4, 0 6, 2, 2, 2 9, 3, 5, 3.
exis [7]

The set of data 6, 2, 2, 2  will have the least dispersion from its mean.

<h3 /><h3>What will be the mean?</h3>

From four sets of data, we take the mean of 6,2,2,2

\rm mean =\dfrac{ Sum \ of\ data}{Number \ of\ data}

So the mean will be

\rm mean =\dfrac{ 6+2+2+2}{4}=\dfrac{12}{4} =3

So the mean of the data (6,2,2,2) is 3 which has the least dispersion from its every data as compared to the other data

Thus the set of data 6, 2, 2, 2  will have the least dispersion from their mean.

<h3 />

To know more about mean follow

brainly.com/question/1136789

7 0
2 years ago
Katrina wants to estimate the proportion of adults who read at least 10 books last year. to do​ so, she obtains a simple random
Vaselesa [24]
E=Z*sqrt (p(1-p)/N), where E= error margin, p=proportion, N=sample size

Katrina's margin error at 85% confidence interval: E=1.96*sqrt (p(1-p)/100) = 0.196 sqrt (1(1-p))

Mathew's margin error at 99% confidence interval: E= 2.58*sqrt (p(1-p)/400) = 0.129 sqrt (p(1-p))

Since both obtained same estimate of proportion (that is, value of p), it can be seen that Mathew's estimate will have a small error (That is, 0.129 is smaller than 0.196). This can be attributed to larger sample size although a wider confidence (99%) interval was considered.
3 0
3 years ago
Determine the slope of the line that passes through each pair of points. <br>A (0,1) ,B (2,7)
valkas [14]
Your answer should be 3

Use this formula to solve slopes:

m = (y2<span> – y</span>1) / (x2<span> – x</span>1<span>) </span>
8 0
3 years ago
-3=12y-5(2y-7). Solve for y
Yuliya22 [10]
1. distribute the parentheses.
-3=12y-10y+35

2. Move the constants to the other side
-3-35=12y-10y

3. Subtract the terms
-38=2y

4. Divide by 2 to get y by itself
y=-19
4 0
2 years ago
Read 2 more answers
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