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Grace [21]
2 years ago
12

What is the value of the expression is a= 4, b= 2 3a+ 2b=

Mathematics
1 answer:
Ksju [112]2 years ago
6 0

A=4

B=2

3a+2b

=3×4+2×2

=12+4

=16

So,the value is 16.

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Help me please i need help
Lana71 [14]

Answer:

k= 70

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
(20 points) A statistics practitioner calculated the mean and the standard deviation from a sample of 400. They are x = 98 and s
Nimfa-mama [501]

Answer:

The P-value is 0.0234.

Step-by-step explanation:

We are given that a statistics practitioner calculated the mean and the standard deviation from a sample of 400. They are x = 98 and s = 20.

Let = population mean.

So, Null Hypothesis, : = 100 {means that the population mean is equal to 100}

Alternate Hypothesis, : > 100 {means that the population mean is more than 100}

The test statistics that will be used here is One-sample t-test statistics because we're yet to know about the population standard deviation;

T.S. = ~

where, = sample mean = 98

s = sample standard deviation = 20

n = sample size = 400

So, the test statistics = ~

= -2

The value of t-test statistics is -2.

Now, the P-value of the test statistics is given by;

P( < -2) = 0.0234 {using the t-table}

8 0
3 years ago
A particular airline wants to know how its customers feel about its service. Every day during the survey period, it randomly sel
-BARSIC- [3]

Answer:

Cluster Random Sample

Step-by-step explanation:

another example should help

Example—An airline company wants to survey its customers one day. So they randomly select 5 flights that day and survey every passenger on those flights, it's a cluster random Sample

it's kinda similar

hope it helps

5 0
3 years ago
Please help …………………….
Mars2501 [29]

9514 1404 393

Answer:

  (-3, 3)

Step-by-step explanation:

The blanks are trying to lead you through the process of finding the point of interest.

__

The horizontal distance from T to S is <u> 9 </u>. (or -9, if you prefer)

The ratio you're trying to divide the line into is the ratio that goes in this blank:

Multiply the horizontal distance by <u> 2/3 </u>. (9×2/3 = 6)

Move <u> 6 </u> units <u> left </u> from point T.

The vertical distance from T to S is <u> 6 </u>.

Multiply the vertical distance by <u> 2/3 </u>. (6×2/3 = 4)

Move <u> 4 </u> units <u> up </u> from point T.

__

Point T is (3, -1) so 6 left and 4 up is (3, -1) +(-6, 4) = (3-6, -1+4) = (-3, 3). The point that is 2/3 of the way from T to S is (-3, 3).

3 0
3 years ago
What is the five-number summary for 1, 3, 3, 3, 4, 8, 9, 10, 10, 17?
butalik [34]

Answer:

I think 3 ............................three

7 0
3 years ago
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