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Anna35 [415]
2 years ago
12

Using substitution how do u solve 3y+2x=6 and 5y-2x=10

Mathematics
2 answers:
Sergeu [11.5K]2 years ago
7 0
<span>3y+2x=6
5y-2x=10
--------------add
8y = 16
y = 2

</span>3y+2x=6
3(2)+2x=6
6 + 2x = 6
2x = 0
x = 0

answer: x = 0 and y = 2 or (0,2)
Viefleur [7K]2 years ago
5 0
The answer is x=-9 and y=8
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Tina babysits and cuts lawns to earn money. In one week, she babysits for 5 hours. She earns $8.25 per hour babysitting. If Tina
puteri [66]

Answer:

Im not sure about this but maybe its $10.15

Step-by-step explanation:

8.25 x 5= 41.25

92- 41.25=50.75

50.75 divide by 5 = 10.15

7 0
3 years ago
If f(x)= *picture* what is f(|a|) ?
Zielflug [23.3K]

Answer:

hello,

answer C

Step-by-step explanation:

As |a| ≥0,

f(|a|)=|a|+5

8 0
2 years ago
The average number of transactions made at an ATM in a 20 minute period is 10. Use an appropriate probability distribution to fi
krek1111 [17]

Answer:

The probability that exactly 6 transactions will be made at an ATM in the next 20 minutes = 0.06306 = 0.0631 to 4d.p

Step-by-step explanation:

This is a Poisson distribution problem

The Poisson distribution formula is given as

P(X = x) = (e^-λ)(λˣ)/x!

where λ = mean = 10 transactions per 20 minutes

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P(X = 6) = (e⁻¹⁰)(10⁶)/6! = 0.06306

5 0
2 years ago
Five times the number of test tubes in a school’s chemistry lab exceeds three times the number of beakers it has by 660. The sum
Usimov [2.4K]
<span>5t=3b+660....and ... 2t+5b=450

from the first we can see that t=(3b+660)/5 and using this value in the second...

(6b+1320)/5+5b=450 making all have common denominator..

6b+1320+25b=2250

31b=930

b=30...and since 2t+5b=450

t=150</span>
4 0
3 years ago
You decide to bake some cakes. You need 150 g of flour for 12 cakes. How much flour do you need for 30 cakes?
miss Akunina [59]
150g/12cakes
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12.5g/cake
12.5x30 = 375
Therefore, you need 375g for 30 cakes.
3 0
3 years ago
Read 2 more answers
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