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3 years ago

1. Simplify the following expressions. Part A: 2x3y3 4y²

Mathematics

2 answers:

Lerok [7]3 years ago

5 0

204xy33333kkkkkkkkkvcbdjzj

Vladimir79 [104]3 years ago

4 0

Answer:

204xy^(3)

Step-by-step explanation:

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A skateboard that is originally $107 is on sale for 90% off!! How much does the skateboard cost?

Allisa [31]

90% off means is is selling for 10% of the original price.

Multiply original price by 10%

107 x 0.01 = $10.70

It is selling for $10.70

6 0

3 years ago

Researchers report that on average freshman who live on campus gain 15 pounds during their first year in college. You survey 10

neonofarm [45]

Answer: 1.460

Step-by-step explanation:

Given : Researchers report that on average freshman who live on campus gain 15 pounds during their first year in college.

Let $\mu$ represents the population mean .

Then, the set of hypothesis will be:-

$H_0: \mu=15$

$H_a:\mu\neq15$

We assume that this is normal distribution.

Sample size : n = 10, which is a small sample (n<30) ,s o we use t-test.

Sample mean : $\overliene{x}=16.2\ lbs$

Standard deviation : $\sigma=2.6$

The test statistic for population mean for small sample is given by :-

$t=\dfrac{\overline{x}-\mu}{\dfrac{\sigma}{\sqrt{n}}}$

$t=\dfrac{16.2-15}{\dfrac{2.6}{\sqrt{10}}}=1.45951276623\approx1.460$

Hence , the value of test statistic = 1.460

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3 years ago

Ramon uses a metric tape measure to find the circumference of a model globe, as shown below.

igor_vitrenko [27]

Answer:

Step-by-step explanation:

8 0

3 years ago

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You must roll a total of 9 on two number cubes to win the

Andru [333]

You need to figure out how many ways you can roll a sum of 9.

3 and 6, 4 and 5, 5 and 4, and 6 and 3. That's 4/36, or a 1/9 chance.

Alex has a 1/6 chance. Therefore, Alex is more likely to win.

7 0

3 years ago

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Use repeated addition to find the solution to each multiplication problem. Change any improper fractions to mixed numbers. 4x1/3

Nata [24]

Answer:

$1\frac{1}{3}$

Step-by-step explanation:

Given the following question:

$4\times\frac{1}{3}$

To find the answer simply multiply the numerators and the denominators by each other.

$4\times\frac{1}{3}$
$4=\frac{4}{1}$
$\frac{4}{1} \times\frac{1}{3}$
$4\times1=4$
$1\times3=3$
$=\frac{4}{3}$
$\frac{4}{3} =4\div3=1\frac{1}{3}$
$1\frac{1}{3}$

Hope this helps.

7 0

2 years ago