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lyudmila [28]
2 years ago
13

4x-5y=0 8x+5y=-60 what is the answer by substitution or elimination?

Mathematics
1 answer:
yuradex [85]2 years ago
7 0
The answer is -5, -5 added by 5 cancels each other out. Then when you add 4x + 8x, you get 12x. So when you do 12x= -60, you get -5.

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Pls help with both these question i put a image ill give anything
kondaur [170]

Answer:

#2 is the first one , A

Beacuse it shows that you need to have x amount of money added on to the 75$ saved up to have 200$ (your goal)

#1 is the third one, C

It shows that she spends MORE THAN (<) 300$ and thats what its showing in the equation along with adding on 59.48$ also in the equation, i think c is the best one.


HOPE THIS HELPS YA!

U GOT THIS GOOD LUCK!

<3 me if you like my answer!

4 0
2 years ago
If 5 hotdogs and 15 hamburgers cost 29.50 and 10 hot dogs and 15 hamburgers cost 56.25. how much are the hot dogs and how much a
Orlov [11]

Answer:

Hotdog costs $5.35 each and hamburger costs $0.18 each

Step-by-step explanation:

The difference in price between the two is the cost of 5 hotdogs.

So, $56.25 - $29.50 = $26.50

I hotdog would cost $26.50/5 = $5.35

Substituting the cost of one hotdog,

10($5.35) + 15ham = $56.25

$53.50 + 15 ham = $56.25

15 ham = $56.25 - $53.50

15 ham = $2.75

So, 1 ham = $2.75/15

= $0.18

5 0
3 years ago
I Nisa buy dollars worth of stock and gained $25 per year Kevin bad for hundred dollars worth of stock in the last $35 per year
alisha [4.7K]

Answer: x= 5 years and y = $225

Step-by-step explanation:

Since we have given that

Amount Nisa gained per year = $25

Amount Kevin lost per year = $35

According to question,

y=100+25x\\\\and\\\\y=400-35x

so, it becomes,

100+25x=400-35x\\\\25x+35x=400-100\\\\60x=300\\\\x=\frac{300}{60}\\\\x=5

so, For x= 5 years,

Their income of Nisa and loss of Kevin will be

y=100+25x\\\\y=100+25\times 5\\\\y=100+125\\\\y=\$225

4 0
3 years ago
Which one would it be?
gayaneshka [121]

Answer:

yES 2:3

Step-by-step explanation:

The sides are the same length

4 0
3 years ago
Read 2 more answers
If ab = 5 and a² + b² = 25, then (a + b)² =​
prisoha [69]

Answer:

100

Step-by-step explanation:

because 5+5=10

the 10^2=10*10=100

3 0
3 years ago
Read 2 more answers
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