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denis-greek [22]
3 years ago
8

What is the value of n? 121 144H A. 95 B. 230 C. 36 D. 599

Mathematics
1 answer:
Maksim231197 [3]3 years ago
7 0

Answer:

95 is the answer

Step-by-step explanation:

180 - 144 = 36

180 - 121 = 59

180 - 59 - 36 = 85

180 - 85 = 95

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A family has two cars during one particular week the first car consume 25 gallons of gas and the second consumed 15 gallons of g
d1i1m1o1n [39]

Answer: the efficiency of the first car is 25 miles per gallon.

the efficiency of the second car is 30 miles per gallon.

Step-by-step explanation:

Let x represent the efficiency of the first car.

Let y represent the efficiency of the second car.

Distance = car efficiency × number of gallons.

The first car consume 25 gallons of gas and the second consumed 15 gallons of gas. The two cars Drove a combined total of 1075 miles. It means that

25x + 15y = 1075- - - - - - - - - - -1

The sum of the fuel efficiencies was 55 miles per gallon. It means that

x + y = 55

Substituting x = 55 - y into equation 1, it becomes

25(55 - y) + 15y = 1075

1375 - 25y + 15y = 1075

- 25y + 15y = 1075 - 1375

- 10y = - 300

y = - 300/-10

y = 30

x = 55 - y = 55 - 30

x = 25

4 0
3 years ago
Find the x−and y−intercepts.
Alexeev081 [22]
Y intercept is (0,-7) and x interpret is (-2,0)
5 0
3 years ago
Using {0,1,3,4,5,6,9}, how many four-digit numbers with different digits can be produced between 4000 to 5000, if the numbers mu
bogdanovich [222]

Answer:18

Step-by-step explanation:

8 0
3 years ago
With the number set: {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13}, what is the probability of choosing an even number?
lilavasa [31]

Answer:

=7

Step-by-step explanation:

sum of all no÷total no

=1+2+3+4+5+6+7+8+9+10+11+12+13 ÷ 13

=91 ÷ 13

=7

5 0
3 years ago
X − 5 = 17<br> A) x = 22 <br> B) x = 12 <br> C) x = 3.4 <br> D) x = -12
Maksim231197 [3]
A is the correct answer coz if you substitute 22 in the place of X-5 the answer will be 17
8 0
3 years ago
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