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2 years ago

What is the purpose of a visual aid used in an oral report?

Mathematics

1 answer:

garik1379 [7]2 years ago

4 0

Answer:

helps listeners visualize important points about your topic.

took the test got it right.

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a car brought for sh 80,000 was sold through a dealer at a profit of 15% commission on the selling price.how much did the owner

Luba_88 [7]

80,000x.15 or 15% = 12,000

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4 years ago

A sample of 60 items from population 1 has a sample variance of 8 while a sample of 40 items from population 2 has a sample vari

lora16 [44]

Answer:

H0: $\sigma^2_1 = \sigma^2_2$

H1: $\sigma^2_1 \neq \sigma^2_2$

The statistic would be given by:

$F=\frac{s^2_2}{s^2_1}=\frac{10}{8}=1.25$

Step-by-step explanation:

Information given

$n_1 = 60$ represent the sample size 1

$n_2 =40$ represent the sample size 2

$s^2_1 = 8$ represent the sample variance 1

$s^2_2 = 10$ represent the sample variance 2

The statistic to check the hypothesis is given by:

$F=\frac{s^2_2}{s^2_1}$

Hypothesis to test

We want to test if the two variances are equal, so the system of hypothesis are:

H0: $\sigma^2_1 = \sigma^2_2$

H1: $\sigma^2_1 \neq \sigma^2_2$

The statistic would be given by:

$F=\frac{s^2_2}{s^2_1}=\frac{10}{8}=1.25$

5 0

4 years ago

Alexander and Matthew go to the movie theater and purchase refreshments for their friends. Alexander spends a total of $60.00 on

soldi70 [24.7K]

Answer:

2x + 9y = 60

10x + 5y = 60

The price of each bag of popcorn is $6.

Step-by-step explanation:

Let each drink costs $x and the price of each bag of popcorn is $y.

So, from the given two conditions we can write two different equations as

2x + 9y = 60 ............... (1) and

10x + 5y = 60 ................. (2)

Now, solving those two equations we get,

5(60 - 9y) + 5y = 60

⇒ 300 - 45y + 5y = 60

⇒ 40y = 240

⇒ y = 6

Therefore, the price of each bag of popcorn is $6. (Answer)

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3 years ago

How does a tree feel after a hard day at work?

alisha [4.7K]

Answer: Happy that he was able to create more seeds and create more trees!

Step-by-step explanation:

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3 years ago

Please help me I can’t even find this problem on the i<br> Internet

ipn [44]

I think it’s C but I don’t know

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3 years ago