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Sphinxa [80]
3 years ago
14

A jar contains n nickels and d dimes. There are 28 coins in the jar,and total value of the coins is $2.20. How many nickels and

dimes are in the jar? Show your work
Mathematics
1 answer:
Harman [31]3 years ago
7 0
N + d = 20 (there are a total of 20 nickels and dimes).05n + .1d = 1.4 (total change equals $1.40)
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Which contract costs more per month? An 18 month cable contract for $2070 or a 12 month contract at $1776? Which is the better d
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Answer:

Contract A is cheaper because $115 per month is less than $148 per month

Step-by-step explanation:

To find the unit price we divide the total cost given by the total months given for each contract to find out the cost per month.

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$1776/12 months = $148 per month

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Answer:

C = 20°

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4 0
2 years ago
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Suppose that a cyclist began a 374 mi ride across a state at the western edge of the​ state, at the same time that a car traveli
kherson [118]
This is the concept of relative speed; We are required to calculate the speed of the car and the bicycle.
Distance between the car and Bicycle=374 miles
Time they met=5.5 hr
Speed traveled by bicycle=x
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Relative speed=x+(x+33.4334)=(2x+33.4334) mph
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374=(2x+33.4334)*5.5
374=11x+183.8837
collecting like term we get:
374-183.8837=11x
11x=190.1163
thus;
x=(190.1163)/(11)
x=17.2833 mph
thus the speed of the bicycle was x=17.2833 mph
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4 0
3 years ago
What is the solution to the equation? 78=m32
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Step-by-step explanation:

78 = m32

m = 78/32 = 39/16 = 2.4375

6 0
2 years ago
Can people help find the answers to this
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I think D and E. The point slope formula is y-y₁=m(x-x₁).
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