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3 years ago

I NEED THE ANSWER! PLEASE! HELP

Mathematics

1 answer:

DedPeter [7]3 years ago

5 0

Answer:

2=yes, 3= Yes, 4= Yes, 5= Yes, 6= Yes, 9= No, 10= Yes

Step-by-step explanation:

Divisibility rules 1-10, look up this video. It tells you all of the rules of divisibility 1-10.

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Specifications call for the wall thickness of two-liter polycarbonate bottles to average 4.0 mils. A quality control engineer sa

bija089 [108]

Answer:

The null hypothesis μ=4.0 could not be rejected.

Step-by-step explanation:

In this problem we have to perform a hypothesis test of the mean, with s.d. of the population unknown.

The sample is: [3.999, 4.037, 4.116, 4.063, 3.969, 3.955, 4.091]

This sample has a mean of 4.033 and a standard deviation of 0.061.

The null and alternative hypothesis are:

$H_0: \mu = 4.0\\\\H_1: \mu \neq 4.0$

We assume a significance level of 0.05.

The test statistic for this test is:

$t=\frac{M-\mu}{\sigma}=\frac{4.033-4.0}{0.061}=0.536$

We have a sample size n=7, so the degrees of freedom are 7-1=6.

For a two-tailed test, t=0.536 and df=6, the P-value can be look up in a t-table.

The P-value is 0.61. Is greater than the significance level, so the effect is not significant and the null hypothesis can't be rejected.

8 0

4 years ago

Nina took an exam. When her results came, she had 40% correct and 68% incorrect. Find the percent to correct answers to incorrec

vivado [14]

Answer: She had 27.2% correct.

Step-by-step explanation: To find the percent, we can divide the part and whole then multiply the quotient by 100. After that we'll need to convert the percent to a decimal. In mathematical terms, the formula will be,

$\frac{part}{whole}=quotient*100$

40% will be the part and 68% will be the whole.

Step 1.

Convert 40 into a decimal by dividing it by 100.

40 ÷ 100 = 0.4

Step 2.

Multiply 0.4 by 68.

0.4 × 68 = 27.2

Hence, she had 27.2% correct.

8 0

3 years ago

Kalyn work at Lowes. Today, he is offering discounts for $15.00 off any lawn mower. A customer comes in and purchases one lawn m

son4ous [18]

Answer:

161.98

Step-by-step explanation:

do 159.99 - 15 which is 144.99. then add 16.99 + 149.99. which is 161.98

8 0

3 years ago

What is the value of x in the triangle below? Round your answer to the nearest tenth if necessary. Please show your work! tyy

Tanzania [10]

Answer:

x = 14.3

Step-by-step explanation:

To find one of the sides, we can use the pythagorean theorem:

a² + b² = c²

a² = c² - b²

a = √c² -b²

a = √(20)² -( 14)²

a = 14.3

8 0

3 years ago

You want to buy a new sports car from roy's cars for $51,800. the contract is in the form of a 48-month annuity due at an apr of

qwelly [4]

The present value of an annuity is given by

$PV= P\left(\frac{1-\left(1+ \frac{r}{t}\right)^{-nt} }{ \frac{r}{t} } \right)$

where: PV is the current value of the annuity, P is the periodic payment, r is the apr, t is the number of compounding in one year and n is the number of years.

Thus, given that PV = $51,800; r = 7.8% = 0.078; t = 12; n = 4.

$51,800= P\left(\frac{1-\left(1+ \frac{0.078}{12}\right)^{-4\times12} }{ \frac{0.078}{12} } \right) \\ \\ =P\left(\frac{1-(1+ 0.0065)^{-48} }{ 0.0065 } \right)=P\left(\frac{1-(1.0065)^{-48} }{ 0.0065 } \right) \\ \\ =P\left(\frac{1-0.7327}{ 0.0065 } \right)=P\left(\frac{0.2673}{ 0.0065 } \right)=41.12P \\ \\ \Rightarrow P= \frac{51,800}{41.12} =\$1,259.73$

Therefore, the monthly payment is $1,259.73

6 0

4 years ago

Read 2 more answers