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2 years ago

I'M CRYING AND I'M DYING , HELP ME! SUPER EASY

Mathematics

1 answer:

Mrrafil [7]2 years ago

3 0

The answer for the spinner would be 1/2 because there are 4 R’s out of 8 so it would be 4/8 which simplifies to 1/2
The answer for the second one I’m sure would be .45 since rolling a one would add up to 9 and the total times it was rolled is 20 so if she rolls again she would have .45 since that’s the answer to 9/20

Hope this helps !

~Your Cookie Monster ( And don’t cry :) )

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Help please!!! There’s a picture

ruslelena [56]

Answer:

4/5 and 5/2

Step-by-step explanation:

took it

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1 year ago

The expanded form of x0 is what

Anestetic [448]

Answer:

Can't really expand x and 0, so I guess it would just be x * 0

Step-by-step explanation:

explained above :)

4 0

2 years ago

On Kathleen's credit card statement get last balance was $89.70. She made a payment of $20, had new charges totaling $32.11, and

Leona [35]

Hi there

Amount financed
89.70−20=69.7

Finance charge
69.7×(0.0123)=0.86

New balance
Previous balance-payment+finance charge+New charge (new transaction)
89.7−20+0.86+32.11
=102.67

Hope it helps

5 0

2 years ago

The CEO of a large electric utility claims that more than 75 percent of his customers are very satisfied with the service they r

vichka [17]

Answer:

$z=\frac{0.77-0.75}{\sqrt{\frac{0.75(1-0.75)}{100}}}=0.462$

Now we can find the p value using the alternative hypothesis with this probability:

$p_v =P(z>0.462)=0.322$

Since the p value is large enough, we have evidence to conclude that the true proportion for this case is NOT significanctly higher than 0.75 since we FAIL to reject the null hypothesis at any significance level lower than 30%

Step-by-step explanation:

Information provided

n=100 represent the random sample selected

$\hat p=0.77$ estimated proportion of students that are satisfied

is the value that we want to test

z would represent the statistic

$p_v$ represent the p value

System of hypothesis

We want to verify if more than 75 percent of his customers are very satisfied with the service they receive, then the system of hypothesis is.:

Null hypothesis: $p\leq 0.75$

Alternative hypothesis: $p > 0.75$

The statistic is given by:

$z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}}$ (1)

Replacing the info given we got:

$z=\frac{0.77-0.75}{\sqrt{\frac{0.75(1-0.75)}{100}}}=0.462$

Now we can find the p value using the alternative hypothesis with this probability:

$p_v =P(z>0.462)=0.322$

Since the p value is large enough we have evidence to conclude that the true proportion for this case is NOT significanctly higher than 0.75 since we FAIL to reject the null hypothesis at any significance level lower than 30%

4 0

2 years ago

Last trig question!! Please explain how to do this!! Thank youuu !!!!!!

Shalnov [3]

Answer:

See the verification below.

Step-by-step explanation:

Starting expression: $sin^3(x)+sin(x)\,cos^2(x)=sin(x)$