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3 years ago

What is it plz answer

Mathematics

1 answer:

Masteriza [31]3 years ago

7 0

The answer is the second one

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a data set has a mean of 68 and standard deviation of 6. An element in this set is 51. What is z-score for 51? Round your answer

gogolik [260]

z = -2.83

<u>Explanation:</u>

Given:

Mean, μ = 68

Standard deviation, σ = 6

Data point, x = 51

Z score, z = ?

We know:

$z = \frac{data point - mean}{standard deviation} \\\\z = \frac{x - u}{p}$

Substituting the value we get:

$z = \frac{51-68}{6} \\\\z = -2.83$

A negative z score says that the data point is below average.

4 0

3 years ago

Juan always saves the same amount from his weekly allowance. The table shows how much he has saved at different times.

erastova [34]

On the 14 week Juan will save $ 52 because each 3 week he earns 3.
So you do 9 divide by 3 and get 3. Then you do 3 times 2 and get 6.
46 + 6 = 52
~JZ

4 0

3 years ago

If r is an odd integer and m=8r then m/2 will always be

kogti [31]

Answer:

b. even

Step-by-step explanation:

m is a multiple of 8, so it is also a multiple of 4. When a multiple of 4 is divided by 2, the result is a multiple of 2 (even).

3 0

3 years ago

trent, pam, and linda will work together to paint a poster that is 4 feet long Each student will paint an equal length of the po

Tasya [4]

The whole length of the poster is 4 feet. There are three people who will paint an equal length, so this means that we need to divide the 4 feet of the poster between 3 people.

4 ÷ 3 <span>≈ 1.3

Each student will paint 1.3 feet, or 1 foot and 4 inches of the poster.</span>

8 0

3 years ago

Rewrite the 4cm: 8km as a ratio in the form 1: n

Delicious77 [7]

Answer:

1 : 200000

Step-by-step explanation:

4 cm ⇒ 8 km

4 cm ⇒ 8 × 1000m

4cm ⇒ 8000m

4 cm ⇒ 8000 × 100 cm

4 cm ⇒ 800000cm

4 : 800000

$\frac{ 4 \:\::\:\ 800000}{4}$

1 : 200000

Therefore,

1 : n

1 : 200000

Hope this helps you.

Let me know if you have any other questions :-)

5 0

2 years ago

Read 2 more answers