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4 years ago

7×300=7× blank hundreds

1 answer:

6 0

7x300=7x 3 hundres because in 300 hundreds there is 3 hundreds.I know that didnt make sense.so basically just look at the front number number its 3 so 3 hundreds but if your working with thousands and the front number is 5 its 5 thousands.I hope this was helpful.

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Help Me Please!!!!!!!!!!!!!!

vovikov84 [41]

First one is 5/15 next one is 5/5 next one is 15/3 next one is 15/5 I think u know how to simplify so ya

7 0

3 years ago

The number of "destination weddings" has skyrocketed in recent years. For example, many couples are opting to have their wedding

melamori03 [73]

Answer:

We conclude that the mean wedding cost is less than $30,000 as advertised.

Step-by-step explanation:

We are given the following data set:(in thousands)

29100, 28500, 28800, 29400, 29800, 29800, 30100, 30600

Formula:

$\text{Standard Deviation} = \sqrt{\displaystyle\frac{\sum (x_i -\bar{x})^2}{n-1}}$

where $x_i$ are data points, $\bar{x}$ is the mean and n is the number of observations.

$Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}$

$Mean =\displaystyle\frac{236100}{8} = 29512.5$

Sum of squares of differences = 3408750

$S.D = \sqrt{\frac{3408750}{7}} = 697.82$

Population mean, μ = $30,000

Sample mean, $\bar{x}$ = $29512.5

Sample size, n = 8

Alpha, α = 0.05

Sample standard deviation, s = $ 697.82

First, we design the null and the alternate hypothesis

$H_{0}: \mu = 30000\text{ dollars}\\H_A: \mu < 30000\text{ dollars}$ We use one-tailed t test to perform this hypothesis.

Formula:

$t_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{s}{\sqrt{n}} }$

Putting all the values, we have

$t_{stat} = \displaystyle\frac{29512.5 - 30000}{\frac{697.82}{\sqrt{8}} } = -1.975$

Now,

$t_{critical} \text{ at 0.05 level of significance, 7 degree of freedom } = -1.894$

Since,

$t_{stat} < t_{critical}$

We fail to accept the null hypothesis and reject it.

We conclude that the mean wedding cost is less than $30,000 as advertised.

8 0

4 years ago

For 15, the answer is b correct?

den301095 [7]

Answer:

a. C = (0,0), r = 3

Step-by-step explanation:

No, the 9 is squared. The square root of 9 is ±3. Therefore, the only possible answer is a.

Can I get brainliest

7 0

3 years ago

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What is a credit card balance?

MA_775_DIABLO [31]

Credit card balance is the amount of money you owe to the credit card company and it's dependent of your purchases, unpaid balnces and any other fees. If you owe money this balance is positive number. If you paid more money than you owe the balance is negative number and zero if the balance is fully paid.

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3 years ago

20 POINTS! Find an equation for the nth term of the sequence. -1, -4, -16, -64, ...

Vladimir [108]

-65536

-1 x 4= -4

-4 x 4= -16

-16 x 4= -64

-64 x 4= -256

-256 x 4= -1024

-1024 x 4= -4096

-4096 x 4= -16384

-16384 x 4= -65536

5 0

3 years ago

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