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3 years ago

Solve the equation 6 (t-2)=2t 2

Mathematics

1 answer:

Degger [83]3 years ago

3 0

Is plus 2 or minus 2?

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Spell 7,258,630 in words

Igoryamba

That is:

Seven million, two hundred and fifty eight thousand, six hundred and thirty.

8 0

3 years ago

Read 2 more answers

Andrew wants to ride his bicycle 36 miles this week. He has already ridden 18 miles. If he rides for 5 more days, what is the av

Vinvika [58]

Answer:

I am pretty sure the answer is 4

Step-by-step explanation:

because 4 × 5 = 20 and 18 + 20 = 38

so if he rides 4 miles for 5 more days he will reach 38

(hope that helped)

3 0

3 years ago

A college-entrance exam is designed so that scores are normally distributed with a mean of 500 and a standard deviation of 100.

yawa3891 [41]

Answer:

The probability is 0.003

Step-by-step explanation:

We know that the average $\mu$ is:

$\mu=500$

The standard deviation $\sigma$ is:

$\sigma=100$

The Z-score is:

$Z=\frac{x-\mu}{\sigma}$

We seek to find

$P(x800)$

For P(x>800) The Z-score is:

$Z=\frac{x-\mu}{\sigma}$

$Z=\frac{800-500}{100}$

$Z=3$

The score of Z = 3 means that 800 is 3 standard deviations from the mean. Then by the rule of the 8 parts of the normal curve, the area that satisfies the conficion of 3 deviations from the mean has percentage of 0.15%

$P(x>800)=0.15\%$

For P(x<200) The Z-score is:

$Z=\frac{x-\mu}{\sigma}$

$Z=\frac{200-500}{100}$

$Z=-3$

The score of Z = -3 means that 200 is 3 standard deviations from the mean. Then by the rule of the 8 parts of the normal curve, the area that satisfies the conficion of 3 deviations from the mean has percentage of 0.15%

$P(x$

Therefore

$P(x800)=P(x800)$

$P(x800)=0.0015 + 0.0015$

$P(x800)=0.003$

6 0

3 years ago

Three fifths of the apples in the tree are right what percent of the apples are not right

saul85 [17]

40% of the apples are not right. Since only 3/5 are right, the that would leave 2/5 to not be right. Since 2/5=40/100, then the answer is 40%. That's just the eay I remember it, hope this helps

7 0

4 years ago

A square has an area of 9ft^2 what is the length,in feet of each of the square sides

Anna007 [38]

Answer:

Step-by-step explanation:

Each side has to be 3

5 0

3 years ago