2 years ago

Write 0.001247 in scientific notation

Mathematics

1 answer:

Mnenie [13.5K]2 years ago

6 0

Answer:

1.247 x 10 to the third power

Step-by-step explanation:

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kykrilka [37]

Answer:

230 5/9

Step-by-step explanation:

after adding tou would get 230 5/9

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3 years ago

9.4 The heights of a random sample of 50 college stu- dents showed a mean of 174.5 centimeters and a stan- dard deviation of 6.9

gladu [14]

Answer: a) (176.76,172.24), b) 0.976.

Step-by-step explanation:

Since we have given that

Mean height = 174.5 cm

Standard deviation = 6.9 cm

n = 50

we need to find the 98% confidence interval.

So, z = 2.326

(a) Construct a 98% confidence interval for the mean height of all college students.

$x\pm z\times \dfrac{\sigma}{\sqrt{n}}\\\\=(174.5\pm 2.326\times \dfrac{6.9}{\sqrt{50}})\\\\=(174.5+2.26,174.5-2.26)\\\\=(176.76,172.24)$

(b) What can we assert with 98% confidence about the possible size of our error if we estimate the mean height of all college students to be 174.5 centime- ters?

Error would be

$\dfrac{\sigma}{\sqrt{n}}\\\\=\dfrac{6.9}{\sqrt{50}}\\\\=0.976$

Hence, a) (176.76,172.24), b) 0.976.

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2 years ago

How do your solve multipling Polynomial

Mars2501 [29]

Step 1: Distribute each term of the first polynomial to every term of the second polynomial. In this case, we need to distribute the 4x and the –5. Step 2: Combine like terms.

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3 years ago

The circumference of a circle is 6pie

Ulleksa [173]

Ok....?

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2 years ago

one class of 28 students has a ratio of 3 girls to 4 boys. if this ratio holds true for the entire 6th grade of 140 students, ho

Julli [10]

Answer: 105 girls because the ratio from girls to boys is 3:4 and that means that 3/4 are girls so 3/4 times 140 is 105

Step-by-step explanation:

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3 years ago