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3 years ago

Sssssssssssssssssssssss sheeeeeeeeeeeeeeeeeesh help me pls

Mathematics

2 answers:

MArishka [77]3 years ago

7 0

Answer:

A. 60

hope this helps

have a good day :)

Step-by-step explanation:

IrinaVladis [17]3 years ago

4 0

Answer: The answer is 60

Step-by-step explanation:

32 + 41 + 43 + 50 + 70 + 73 + 80 + 88 = 477

then divide 477 by the amount of numbers there which is 8

477 divided by 8 = 59.625

59.6 to the highest tens is 60

because 6 is highter then 5

You might be interested in

Calculate the middle number in the middle of 12.7 and 21.2.

ASHA 777 [7]

The middle number is 16.95

<h3>What is Number system?</h3>

The collection of numbers is called the number system. These numbers are of different types such as natural numbers, whole numbers, integers, rational numbers and irrational numbers.

Given:

Numbers are 12.7 and 21.2

Difference between number

= 21.2-12.7

=8.5

middle number

= 12.7+ 8.5/2

= 12.7+ 4.25

= 16.95

Hence, the middle number is 16.95.

Learn more about this middle number here:

brainly.com/question/17721191

#SPJ1

4 0

2 years ago

The mean age of 5 people in a room is 40 years. A person enters the room. The mean age is now 40. What is the age of the person

ad-work [718]

Answer:

Step-by-step explanation:

5 people in the room have 5*40 = 200 years altogether

a new person is X years old.

Now 6 people have (200 + x) years altogether.

Mean age of 6 people is (200+x)/6. and it is also = 40.

So,

(200+x)/6 = 40

200 + x = 240

x = 40

6 0

3 years ago

A market research firm supplies manufacturers with estimates of the retail sales of their products from samples of retail stores

allochka39001 [22]

Answer:

Confidence interval = (4.61972, 25.46428)

Margin of Error = 3.9078675

Step-by-step explanation:

Given that :

This year:

Mean (μ1) = 64

Standard deviation (s1) = 13.8

Sample size (n1) = 28

Last year:

Mean (μ2) = 48.958

Standard deviation (s2) = 15.4

Sample size (n2) = 28

99% confidence interval estimate of the difference μ1−μ2

α = 1 - 99% = 0.01

(μ1−μ2) ± t0.01,27 * (√s1²/n1 + s2²/n2)

t0.01, 27 = 2.770683 (t value calculator)

√s1²/n1 + s2²/n2 = √13.8^2/28 + 15.4^2/28 = 3.9078675

(64 - 48.958) ± 2.667(3.9078675)

15.042 ± 10.42228

(15.042 - 10.42228), (15.042 + 10.42228)

(4.61972, 25.46428)

The margin of error :

√(s1²/n1) + (s2²/n2)

√(13.8^2/28) + (15.4^2/28)

√(6.8014285 + 8.47)

√15.2714285

= 3.9078675

3 0

3 years ago

In 2012, entering freshmen at the UA have an average ACT score of 25.4 with a standard deviation of 2.1. 1. What is the probabil

astra-53 [7]

Answer:

P [ Z > 24,1 ] = 72,24 %

Step-by-step explanation:

P [ Z > 24,1 ] = 1 - P [ Z < 24,1 ]

P [ Z < 24,1 ] = ( Z - μ₀ ) / σ

P [ Z < 24,1 ] = ( 24,1 - 25,4) / 2,1

P [ Z < 24,1 ] = - 1,3/ 2,1

P [ Z < 24,1 ] = - 0,6190 ≈ - 0,62

We look in z-table and find for z(score) -0,6190

P [ Z < 24,1 ] = 0,27763

Then

P [ Z > 24,1 ] = 1 - 0,27763

P [ Z > 24,1 ] = 0,72237 ⇒ or P [ Z > 24,1 ] = 72,24 %

4 0

3 years ago

Can you help me with this question please

Yuki888 [10]

Answer: x=70

Step-by-step explanation:

7 0

4 years ago