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zhuklara [117]
2 years ago
5

15 + 10x = 40 + 4x using the elimination method

Mathematics
1 answer:
Anit [1.1K]2 years ago
7 0

Step-by-step explanation:

<u>Subtract </u><u>15</u><u> </u><u>from</u><u> </u><u>both</u><u> </u><u>sides</u><u>:</u>

10x = 25 + 4x

<u>Subtract 4x </u><u>from</u><u> both sides:</u>

6x = 25

<u>Divide each side by 6:</u>

x = 4 \frac{1}{6}

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Solve independent system equations for: <br><br>5x-9y=-65<br>10x-3y=20<br>x=?<br>y=?<br>​
Sergio039 [100]
5x-9y=-65
10x-3y=20

Multiple the first equation by 2
10x-18y=-130
10x -3y=20
Then subtract the two equations to get rid of the x

21y=-150
Divide the -150 by 21
Y=-7.14

Plug the y into the original equation. (Either one)

5x-9(-7.14)=-65
5x-64.28=-65
Then add 64.28 to the -65
5x=-0.72
Divide by 5
X=-0.144

I hope this is right
3 0
4 years ago
Michael bought a bicycle at 20% off the original price. If she paid $240,what was the original retail price?
Contact [7]

Answer:

The original price was $288.00.

Step-by-step explanation:

First, identify your rate and your base. Your rate is 20% and your base is $240. Next, take 20% and convert it to a decimal, making .20. Third, multiply the base by the new rate, $240 x .20, but don't line up the decimals. This will give you $48.00 (your number will usually get smaller if you're working with decimals). Finally, add $48.00 to $240.00. This will give you $288.00.

7 0
4 years ago
The phythatagorean Theron in two and three dimensions
natta225 [31]

The Pythagorean theorem states that a^2 + b^2 = c^2, where a and b are sides not opposite to the right angle, shown as a square. C represents the hypotenuse, or side opposite of the right angle

We see that a = 14 (it can also be b; both can be plugged in as both are  adjacent and not opposite of the right angle)

c = 19; hypotenuse is opposite of right angle

14^2 + b^2 = 19^2

196 + b^2 = 361

b^2 = 361 - 196

b^2 = 165

b = square root of 165

b = 12.845

x = 12.845

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3 years ago
Could anyone tell me the answer of this question?<br>Pls answer fast​​
jarptica [38.1K]

Answer:

28.

Step-by-step explanation:

A = bh = 8 · 3.5 = 28

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3 years ago
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Find the measure of angle AOB
Ivan
B. 35 degrees. Hope this helped! :)
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3 years ago
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