PLEASE HELP!!

Joshua and Crystal opened

Stells [14]

Answer:

Joshua's account had a greater change.

Step-by-step explanation:

Both accounts had $100

Joshua's account now has $67.25 which means he used $32.75

Crystal's account now has $131.97 which means he saved $31.97.

Joshua had a greater change of balance.

7 0

2 years ago

Preform the indicated operation and express the answer in simplest radical form

tigry1 [53]

hello

the question here is

$3\sqrt[]{7}(14-4\sqrt[]{56})$

step 1

multiply through the bracket by the coeffiecient

$\begin{gathered} 3\sqrt[]{7}(14-4\sqrt[]{56}) \\ (3\sqrt[]{7}\times14)-(3\sqrt[]{7}\times4\sqrt[]{56}) \\ (14\times3\sqrt[]{7})-3\sqrt[]{7}\times4\sqrt[]{4\times14} \\ (42\sqrt[]{7})-3\sqrt[]{7}\times8\sqrt[]{14} \\ (42\sqrt[]{7})-\lbrack(3\times8)\sqrt[]{7\times14} \\ 42\sqrt[]{7}-24\sqrt[]{98} \end{gathered}$ $\begin{gathered} 42\sqrt[]{7}-24\sqrt[]{49\times2} \\ 42\sqrt[]{7}-24\times7\sqrt[]{2} \\ 42\sqrt[]{7}-168\sqrt[]{2} \end{gathered}$

5 0

1 year ago

Breifly describe the rules of multiplying and dividing integers

Ivan

Answer:

Just multiply the absolute values and make the answer positive. When you multiply two integers with different signs, the result is always negative. Just multiply the absolute values and make the answer negative. When you divide two integers with the same sign, the result is always positive.

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

It costs 3 tickets to play a game at the fair. If you spent 21 tickets on the game, which equation could you use to solve for th

Reika [66]

Answer:

3×g=21

..............

4 0

2 years ago

a normal distribution with a mean of 25 minutes with a population standard deviation of 5 minutes. The store manager sampled 100

sergiy2304 [10]

Answer:

$z=\frac{24.25-25}{\frac{5}{\sqrt{100}}}=-1.5$

The p value for this case would be given with this probability:

$p_v =P(z$

For this case since the p value is higher than the significance level of 0.01 we have enough evidence to fail to reject the null hypothesis and we don't have enough evidence to conclude that the true mean is significantly less than 25 min.

Step-by-step explanation:

Information given

$\bar X=242.5$ represent the sample mean

$\sigma=5$ represent the population deviation

$n=100$ sample size

$\mu_o =25$ represent the value to check

$\alpha=0.01$ represent the significance level

z would represent the statistic

$p_v$ represent the p value

Hypotheis to test

We want to verify if the true mean is less than 25 min, the system of hypothesis would be:

Null hypothesis: $\mu \geq 25$

Alternative hypothesis: $\mu < 25$

The statistic would be given by:

$z=\frac{\bar X-\mu_o}{\frac{\sigma}{\sqrt{n}}}$ (1)

And replacing the info given we got:

$z=\frac{24.25-25}{\frac{5}{\sqrt{100}}}=-1.5$

The p value for this case would be given with this probability:

$p_v =P(z$

For this case since the p value is higher than the significance level of 0.01 we have enough evidence to fail to reject the null hypothesis and we don't have enough evidence to conclude that the true mean is significantly less than 25 min.

4 0

3 years ago