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ddd [48]
3 years ago
12

-9x-3y=-18 -3x+y=4 solve the system of equation

Mathematics
1 answer:
Slav-nsk [51]3 years ago
5 0
Answer would be x = 1/3 and y = 5
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Please help:)<br><br> See pic attached
Lostsunrise [7]

Answer:

Adults: 75, girls: 100, Boys: 75

Step-by-step explanation:

2/5 x 250 = 100( girls)

3/10 x 250 = 75 (boys)

250 - (100 + 75) = 250 - 175 = 75 (Adults)

5 0
2 years ago
Read 2 more answers
Christian wants to make an A in his class. There are 5 exams this year, and he has taken 4 of them. His grades were 84, 88, 95,
ioda

Answer:

last test grade=x     x ≥ 79 so 79%

Step-by-step explanation:

(84/5)+(88/5)+(95/5)+(104/5)+(x/5) ≥ 90

Simplify: (371/5)+(x/5) ≥ 90

Subtract (371/5) from both sides

Then you have (x/5) ≥ (79/5)

Then multiply both sides by 5 and you have x ≥ 79

P.S. If it was helpful please consider giving me brainliest. =)

3 0
3 years ago
A coin is tossed 10 times and lands tails up 3 times. What is the experimental probability of the coin landing tails up?
Degger [83]
It's 3/10 since we did it 10 times and it landed tails 3 times
3 0
3 years ago
There are 88 Keyes on a piano.some keys are black and some keys are white .
shepuryov [24]
It would be C.88-x and there are 36 black keys on an 88 key piano

5 0
3 years ago
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Consuelo deposited an amount of money in a saving account tha earned 6.3% simple interest. After 20 years, she earned $5,922 in
julia-pushkina [17]

Answer:

5922=Px6.3%x20

5922=Px1.26

P=5922/1.26

P=4700

Step-by-step explanation:

4 0
3 years ago
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