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3 years ago

I have a questions does any take the 3 chapter test about math if any one please say yes in the comments below

Mathematics

1 answer:

Anastaziya [24]3 years ago

3 0

What? Not everybody has the same math book, try asking someone in your school

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5 + 4 ⋅ ( 8 − 6 ) ^2

Amiraneli [1.4K]

$\boldsymbol{\sf{5+4\cdot(8-6)^{2} \ \ \longmapsto \ \ [Subtract \ 6 \ from \ 8.] }}$

$\boldsymbol{\sf{5+4\cdot2^{2} }}$

Calculates 2 to the power of 2 and gets 4.

$\boldsymbol{\sf{5+4\cdot4 \ \ \longmapsto \ \ [Multiply] }}$

$\boldsymbol{\sf{5+16 \ \ \longmapsto \ \ [Add]}}$

$\blue{\boxed{\boldsymbol{\sf{Answer \ \ \longmapsto \ \ 21}}}}$

4 0

2 years ago

Read 2 more answers

A jar contains 2 orange, 4 green, 2 white and 2 black balls. What is the probability of drawing an orange ball without putting i

KonstantinChe [14]

Answer:

2/45

Step-by-step explanation:

We are told that:

A jar contains 2 orange, 4 green, 2 white and 2 black balls.

The total number of balls in the jar is calculated as:

2 orange balls + 4 green balls + 2 white balls + 2 black balls = 10 balls

The probability of drawing an orange ball = P(Orange) = 2/10

The probability of drawing a black ball = P(Black) = 2/10

Therefore, the probability of drawing an orange ball without putting it back, then drawing a black ball is calculated as:

2/10 × 2/9 = 4/90

= 2/45

7 0

3 years ago

To help consumers assess the risks they are taking, the Food and Drug Administration (FDA) publishes the amount of nicotine foun

Alenkasestr [34]

Answer:

The mean nicotine content with a 95% confidence interval is (25.52mg, 26.88mg).

Step-by-step explanation:

The sample size is 95.

The first step to solve this problem is finding our degrees of freedom, that is, the sample size subtracted by 1. So

$df = 95-1 = 94$

Then, we need to subtract one by the confidence level $\alpha$ and divide by 2. So:

$\frac{1-0.95}{2} = \frac{0.05}{2} = 0.025$

Now, we need our answers from both steps above to find a value T in the t-distribution table. So, with 94 and 0.025 in the t-distribution table, we have $T = 2.28$ .

Now, we find the standard deviation of the sample. This is the division of the standard deviation by the square root of the sample size. So

$s = \frac{2.9}{\sqrt{95}} = 0.2975$

Now, we multiply T and s

$M = T*s = 2.28*0.2975 = 0.6783$

For the lower end of the interval, we subtract the mean by M. So 26.2 - 0.6783 = 25.52mg

For the upper end of the interval, we add the mean to M. So 26.2 + 0.6783 = 26.88mg

The mean nicotine content with a 95% confidence interval is (25.52mg, 26.88mg).

4 0

3 years ago

Fillmore played Skee-Ball for 5 minutes and won four tokens. He played again for 20 minutes and won 16 tokens. Write a formula t

AlexFokin [52]

Y=13+.80x It is this because you have to find the difference between the 5,4 and 20,16 to get .80. and then you put it into the equation.

6 0

3 years ago

A boogie board that has a regular price of $6. If the sales tax on the boogie board is 7%, what is the total cost of the board?

zavuch27 [327]

Answer:

6.42$

Step-by-step explanation:

6.00 divided by 100 equals 0.6 multiplied by 7 equals 0.42 so the sales tax is 0.42 cents and the total is 6.42$

7 0

3 years ago