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Mrac [35]
2 years ago
8

Please show all work!! this is algebra.

Mathematics
1 answer:
Mnenie [13.5K]2 years ago
8 0
Franco:
3x+2y=19
Caryl:
2x+4y=24

now use elimination

-2(3x+2y=19)
1(2x+4y=24)
=
-6x-4y=-38
2x+4y=24
add them together
which equals -4x=-14
divide both sides by -4
-4x/-4=-14/-4
x=7/2


we found x, so we subsitute it into the the original equation

3x+2y=19
3(7/2)2y=19
2y+21/2=19
-21/2 -21/2
2y=17/2
divide by 2 on both sides
2y/2= 17/2/2
y=17/4

so x= 7/2 and y= 17/4


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yuradex [85]
The simplest I can put it

10^1 = 10
10^2 = 100
10^3 = 1000
(essentially the number of zeroes)

5*10^2 = 5*100 = 500 (adding 2 zeroes, or moving the decimal over 2 places

Same works for numbers smaller than zero

5*10^-2 = 5*.01 = .05 (moving the decimal to the right 2 places
7 0
3 years ago
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Drupady [299]
-250 feet most likely is the answer

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7 0
3 years ago
Your friend goes shopping with $35. She buys a sweater that is on sale for half price and uses a coupon for $5 off the sale pric
Artist 52 [7]
Let S = the original price of the sweater. Now, lets step through the problem...

The friend goes shopping with $35 and ends up left with $10.50. This means she spent 35 - 10.50 = 24.50 on the sweater after the sale and coupon.

Next, the sweater is on sale for 50%. This means we take S and take 50% of that. S*.50

Next, she uses a $5 off coupon. Thus, we want to subtract $5 from the price. 

Lets combine this all together!

24.50 = S*.50 - 5

Solve for S.

24.50 = S*.50 - 5
29.50 = S*.50
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Thus, the original price of the sweater was $59.
8 0
3 years ago
The sum of 6 consecutive even numbers is 126
Elis [28]
6 consecutive even numbers...x, x + 2, x + 4, x + 6, x + 8, x + 10

x + x + 2 + x + 4 + x + 6 + x + 8 + x + 10 = 126
6x + 30 = 126
6x = 126 - 30
6x = 96
x = 96/6
x = 16

x + 2 = 16 + 2 = 18
x + 4 = 16 + 4 = 20
x + 6 = 16 + 6 = 22
x + 8 = 16 + 8 = 24
x + 10 = 16 + 10 = 26

ur numbers are : 16,18,20,22,24,26
3 0
3 years ago
If dinner costs 31 British pounds, then how much is that in U.S. Dollars?
kaheart [24]

Answer:

If dinner cost 31 British pounds than $38.78 would be the cost in U.S. dollars.

I hope this helps!

8 0
3 years ago
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