Question 1 A b c d PLEASE HELP ASAP!!

What is the third term of the sequence? a1 = m an = 2an-1 2m 4m 6m 7m

Nady [450]

Rjp912 it should be 4m

3 0

3 years ago

Tate and Black cut a pizza into 8 equal slices. Tate eats 3 slices and Black eats 4 slices. Write a fraction to represent the am

Shtirlitz [24]

7/8 because there are 8 pieces of pizza and they eat 7 slices of pizza.

3 0

2 years ago

A particular brand of tires claims that its deluxe tire averages at least 50,000 miles before it needs to be replaced. From past

Vadim26 [7]

Answer:

We conclude that deluxe tire averages less than 50,000 miles before it needs to be replaced which means that the claim is not supported.

Step-by-step explanation:

We are given that a particular brand of tires claims that its deluxe tire averages at least 50,000 miles before it needs to be replaced. From past studies of this tire, the standard deviation is known to be 8000.

From the 28 tires surveyed, the mean lifespan was 46,500 miles with a standard deviation of 9800 miles.

Let $\mu$ = average miles for deluxe tires

So, Null Hypothesis, $H_0$ : $\mu \geq$ 50,000 miles {means that deluxe tire averages at least 50,000 miles before it needs to be replaced}

Alternate Hypothesis, $H_A$ : $\mu$ < 50,000 miles {means that deluxe tire averages less than 50,000 miles before it needs to be replaced}

The test statistics that will be used here is One-sample z test statistics as we know about population standard deviation;

T.S. = $\frac{\bar X-\mu}{\frac{\sigma}{\sqrt{n} } }$ ~ N(0,1)

where, $\bar X$ = sample mean lifespan = 46,500 miles

$\sigma$ = population standard deviation = 8000 miles

n = sample of tires = 28

So, test statistics = $\frac{46,500-50,000}{\frac{8000}{\sqrt{28} } }$

= -2.315

The value of the test statistics is -2.315.

Now at 5% significance level, the z table gives critical value of -1.6449 for left-tailed test. Since our test statistics is less than the critical value of z as -2.315 < -1.6449, so we have sufficient evidence to reject our null hypothesis as it will fall in the rejection region due to which we reject our null hypothesis.

Therefore, we conclude that deluxe tire averages less than 50,000 miles before it needs to be replaced which means that the claim is not supported.

4 0

3 years ago

) Rearrange v = u + at to make t the subject of the formula.

uranmaximum [27]

Answer:

t = v-u over a

Step-by-step explanation:

as you take away U

then divide by a

5 0

3 years ago

10 free points if you know answer to the question. always loooking to make peoples days better!

ira [324]

What you need to know in order to answer this:

   In math, the symbol " ! " is used to indicate "factorial".
   "Factorial" means the product of the integers from 1
   up to the number.

Examples:

2 ! = "two factorial" = 1 * 2 = 2

4 ! = "four factorial" = 1 * 2 * 3 * 4 = 24

For this question:

10 ! = "ten factorial" = 1 * 2 * 3 * 4 * 5 * 6 * 7 * 8 * 9 * 10

   = 3,628,800 .

If you look at your calculator very closely, I'll bet you
there's a key on it marked " x ! " .
Enter a whole number into the calculator, and that key
gives you the factorial of the number.

And by the way, the points aren't 'free'. I had to
give you some information in order to earn them.

3 0

3 years ago

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