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Rashid [163]
3 years ago
11

How many solutions does this linear system have?

Mathematics
1 answer:
gayaneshka [121]3 years ago
4 0

Answer:

One solution: (2.5,0)

Step-by-step explanation:

We can use substitution for the solution. Substitute y=2x-5 to -8x-4y=-20 so that you end up with -8x-8x+20=-20. Next you want to add like terms which will be -16x+20=-20, next you want isolate x by subtracting 20 from both sides and leaves you with -16x=-40. Divide -16 on both sides to fully isolate x and will leave you with x=2.5. Now substiture in 2.5 for x in y=2x-5 to get y=2(2.5)-5 which will then lead to y=0.

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Which angles are complementary to each other?
Oksi-84 [34.3K]

Answer:

  All apply

Step-by-step explanation:

Complementary angles are ones that total 90°. Here, we have two pairs of congruent angles such that each pair totals 90°. We can mix and match to find pairs of complementary angles.

  less than 45°: BGC and EGF

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A complementary pair will consist of one angle from the first list and one angle from the second list. There are 4 possible pairings, and all are shown as answer choices.

All of the choices apply.

3 0
2 years ago
Start time 3:30 pm end time 7:00 pm what is elapsed time?
DiKsa [7]
Hello there!

Your answer is 3 hours and 30 minutes.

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7 0
3 years ago
Help. I've been staring at this math question for hours. I can't figure it out.
kogti [31]
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4 0
2 years ago
Hey
Ray Of Light [21]
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For blank 3: You would mention how many apps she got twice, so not the first option or the third option. It should be the answer from the first blank because the equation represents how much money is in her account.
7 0
3 years ago
Express 0.029646 correct to three decimal places​
jonny [76]

Answer:

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Step-by-step explanation:

=> 0.029646

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So, it becomes

=> 0.030 (Because the digit in ten thousandths place was greater than 5)

7 0
3 years ago
Read 2 more answers
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