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Vedmedyk [2.9K]
3 years ago
13

Judith's family went on a cross-country trip. They drove exactly 232 miles a day for 12 days. How many miles did they drive?

Mathematics
1 answer:
ElenaW [278]3 years ago
5 0

Answer:

2,784 miles

Step-by-step explanation:

232*12=2,784

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A sample of 1800 computer chips revealed that 53% of the chips do not fail in the first 1000 hours of their use. The company's p
charle [14.2K]

Answer:

So the value of the test statistic is -0.85.

Step-by-step explanation:

We know that a sample of 1800 computer chips revealed that 53% of the chips do not fail in the first 1000 hours of their use. The company's promotional literature states that 54% of the chips do not fail in the first 1000 hours of their use.

We get that:

n=1800\\\\p_1=53\%=0.53\\\\p_2=54\%=0.54\\

We calculate the standar deviation:

\sigma=\sqrt{\frac{0.53 \cdot (1-0.53)}{n}}=\sqrt{\frac{0.53 \cdot 0.47}{1800}}=0.01176

We calculate the value of the test statistic:

z=\frac{p_1-p_2}{\sigma}=\frac{0.53-0.54}{0.01176}=-0.85

So the value of the test statistic is -0.85.

5 0
3 years ago
The Eiffel Tower in Paris France has 674 steps that go from the ground to second floor there are 328 steps from ground to first
Radda [10]

Answer:

346

Step-by-step explanation:

i think

3 0
3 years ago
Help me with this ASAP PLEASE!!!❤️
DaniilM [7]
The third one its already in order
7 0
3 years ago
ANSWER QUICKLY..
astra-53 [7]

Answer:

10 weeks

Step-by-step explanation:

Let's set an equation for you and your brother.

You have $90 plus $18 for every week you save (x).

90+18x

And your brother has $120 plus $15 dollars per week that he saves (x)

120+15x

You want to have the sum of the money equal so combine the two concluded statements

90+18x=120+15x

Arrange them so that you have like terms on each side

90+18x-15x=12+15x-15x

90+3x=120

90-90+3x=120-90

3x=30

x=10

"x" is our number of weeks you and your brother save so the answer is 10 weeks

Just to be sure you can use our equation and plug 10 for every time you see x to make sure our answer is right.

6 0
2 years ago
X^2-3×=2 use quadratic equation ​
abruzzese [7]

Answer:

(-3+√17 )/2. or( -3-√17)/2

hope you got it

4 0
3 years ago
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