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agasfer [191]
3 years ago
10

Roy already has 10,368 frequent flyer miles, and he will earn 2,832 more miles from his round-trip flight to New York City. In a

ddition, he earns 2 frequent flyer miles for each dollar he charges on his credit card.
Mathematics
1 answer:
n200080 [17]3 years ago
8 0
10,368+2,832=13,200

13,200×2=26,400
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Trevor solved the system of equations below. What mistake did he make in his work? 2x + y = 5 x − 2y = 10 y = 5 − 2x x − 2(5 − 2
Arturiano [62]
2x+y=5 \\
x-2y=10 \\ \\
y=5-2x \\
x-2(5-2x)=10 \\
x-10+4x=10 \\
5x-10=10 \\
\boxed{5x=0} \Leftarrow \hbox{the mistake, it should be 5x=20} \\
x=0 \\ \\
2(0)+y=5 \\
y=5

If 2x+y=5, then y=5-2x, so he substituted 5-2x correctly.
x+4x=5x, so he combined like terms correctly.
If 5x-10=10, then 5x=10+10 -> 5x=20, so he subtracted 10 from the right side instead of adding 10 to the right side.

The answer is C.

Here's the correct solution:
2x+y=5 \\
x-2y=10 \\ \\
y=5-2x \\
x-2(5-2x)=10 \\
x-10+4x=10 \\
5x-10=10 \\
5x=10+10 \\
5x=20 \\
x=\frac{20}{5} \\
x=4 \\ \\
y=5-2x \\
y=5 - 2 \times 4 \\
y=5-8 \\
y=-3 \\ \\
(x,y)=(4,-3)
5 0
3 years ago
What is the total area of the shape shown? All units are in feet
DedPeter [7]
First, we should calculate the areas separately.
4x8=32
5.6 x 4 = 22.4/2 = 11.2
4.5x4=22 22/2=11
4x8=32
32+11+32+11.2
64+22.2=86.2
So 86.2 ft2
Hope this helped. ^^
8 0
3 years ago
Read 2 more answers
Find the equation of a line parallel to y - 5x = 10 that passes through the point (3, 10). (answer in slope-intercept form)
Maru [420]
I think it would be the second one
8 0
3 years ago
Read 2 more answers
Explanation please will give brainliest.​
Sonja [21]

Answer:

AC = 28

Step-by-step explanation:

Given

AB = 16

BC = 12

Required

Determine AC

Since A, B and C are collinear, then:

AC = AB + BC

So, we have:

AC = 16 + 12

AC = 28

5 0
3 years ago
QUICK!!!!!!!! PLSSS I NEED HELP!!!
coldgirl [10]

Answer:

It's the 4th one

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
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