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algol13
2 years ago
12

Can somebody please help me I will mark u brilliant

Mathematics
2 answers:
noname [10]2 years ago
7 0

Answer:

14

Step-by-step explanation:

You first add up all the number shown on the chart. Then you divide the sum by the number of values. 12+11+12+20+15 = 70. 70÷5= 14.

CaHeK987 [17]2 years ago
3 0

Answer: 14

Step-by-step explanation:

Since they said find the mean

You are suppose to add up all the numbers then divide it by how many numbers are there.

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Maya can run 18 miles in 3 hours, and she can bike 18 miles in 2 hours. When Maya biked for 3 hours and then ran for 1 hour and
solmaris [256]

Answer: 8

Step-by-step explanation: Speed is distance/time

18/3 = 6 miles per hour running

18/2 = 9 miles per hour biking

3 hour bike = 27 miles

1.50 hour run (0.50 because 30 minutes is half of an hour) = 9 miles

27 + 9/3 + 1.50 = 36/4.5 or 8

4 0
3 years ago
the area of rectangular park is 3/5 square mile, the length of the park is 7/8 mile,what is the width of the park
Luba_88 [7]
Area=LengthxWidth so 3/5=7/8xWidth. To get width by itself you must divide both sides by 7/8. When dividing fractions you can flip the fraction and multiply so multiply (3/5)(8/7). To do this just multiply the numerators and denominators to get 24/35 so width = 24/35
8 0
3 years ago
9x2 - 21x + 4x4 - 9 by 2x - 3​
Alinara [238K]

9514 1404 393

Answer:

  2x^3 +3x^2 +9x +3

Step-by-step explanation:

Polynomial long division works best with the polynomials written in standard form, with appropriate 0 terms added where necessary to account for all of the powers of the variable.

As shown in the "Hints," the quotient terms are the ratio of the leading dividend term and the leading divisor term. The product of the quotient term and divisor is subtracted from the dividend to get the new dividend at each step.

The result of your division is 2x^3 +3x^2 +9x +3.

4 0
2 years ago
If Josiah’s speed, in miles per minute, is constant, what is the constant of proportionality?
ollegr [7]

Answer:

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
The sum of the measures of the interior angles of a convex polygon is 1080° Classify the polygon by the number of sides​
lozanna [386]

Answer:

(n-2)×180=1080

180n -360=1080

180n = 1080+360

180n =1440

dividing by 180

n=8

hence it is a regular polygon with 8 sides .I.e it is an octagon

Step-by-step explanation:

we are given the total interior angles in the polygon and we know that the formula to find the total interior angles of a polygon is (n-2) ×180

where n is the number of sides

6 0
3 years ago
Read 2 more answers
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