3 years ago

WILL GIVE BRAINLIEST!!

Mathematics

1 answer:

joja [24]3 years ago

4 0

Answer:

Step-by-step explanation:

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Write and solve a system of equations for the situation described below. Define your variables and write your solution as a sent

Delicious77 [7]

N = nickels and q = quarters

0.05n + 0.25q = 1.90
n = 2q + 3

0.05(2q + 3) + 0.25q = 1.90
0.10q + 0.15 + 0.25q = 1.90
0.10q + 0.25q = 1.90 - 0.15
0.35q = 1.75
q = 1.75/0.35
q = 5 ......there are 5 quarters

n = 2q + 3
n = 2(5) + 3
n = 10 + 3
n = 13 <=== there are 13 nickels

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3 years ago

Sold 72 books, if ratio of books to bookmarks sols was 9:2, how many bookmarks sold?

REY [17]

16 book marks has been sold

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3 years ago

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Given that slope is rise/run, write the mathematical equation for calculating the slope of a trend line on a graph.

Gennadij [26K]

select two points on the line, and plug into this formula y2-y1 over x2-x1

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3 years ago

A cylinder has a volume of 390 cm³. If a cone has the same dimensions as the cylinder then what is the volume of the cone.

dangina [55]

Answer: The volume of the cone is 130 cubic centimeters.

Step-by-step explanation:

We know that to find the volume of a cylinder you will use the formula

V= $\pi$ $r^{2} *h$ Where r is the radius and h is the height.

And to find the volume of a cone you will use the formula

V= $\pi$ $r^{2}$ *h /3

So if they have the same dimensions which is the height and the radius then we will just divide the volume of the cylinder by 3 to find the volume of the cone.

V = 390/3

V = 130 cm^3

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3 years ago

I have no idea what to do with this someone help

joja [24]

The given distance of 5.20 would be A.

Replace A with 5.20 to solve for T.

T = 5.20^3/2
T = 11.9 years.

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3 years ago

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