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erma4kov [3.2K]
2 years ago
7

Help me please I give brainliest ! ​

Mathematics
1 answer:
Ivan2 years ago
4 0

Answer:

Here is what I did

Step-by-step explanation:

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2x + y = 9<br> x = y - 3
lawyer [7]

Answer:

x=2 and y=5

Step-by-step explanation:

Steps:

I will solve your system by substitution.

x=y−3;2x+y=9

Step: Solve x = y − 3 for x:

Step: Substitute y − 3 for x in 2x + y = 9:

2x+y=9

2(y−3)+y=9

3y−6=9(Simplify both sides of the equation)

3y−6+6=9+6(Add 6 to both sides)

3y=15

3y/3=15/3  (Divide both sides by 3)

y=5

Step: Substitute 5 for y in x = y − 3 :

x=y−3

x=5−3

x=2(Simplify both sides of the equation)

Answer:

x=2 and y=5

3 0
3 years ago
Read 2 more answers
The estimated answer to a multiplication problem is 800,000. Which of the following expressions could result in this answer? Exp
EastWind [94]

Answer:

8,146 x 121

Step-by-step explanation:

This is a problem in which you need to measure your understading of "orders of magnitude."

If the estimated answer is 800000 that means that we are looking at a multiplication in the "order of" 8*10^5

You need to look at the "orders of magnitude" of the things you're multiplying. In the first case, we have 8146*12 that would be "of the order of" 8*10^3 times 10^1. So the whole multiplication would "of the order of" 8*10^4 or near 80000

The correct answer, 8,146 x 121, is because it's "of the order of" 8*10^3 times 10^2 and the gives us the 8*10^5 we need.

6 0
3 years ago
Compare the values of the 2s and 5s in 55,220
Y_Kistochka [10]
One of the 2s are 200 the other is 20,5s 50,000 and then 5,00
3 0
3 years ago
Mariana is making a large pot of pasta. She mixes together 5 pounds of pasta, 6 pounds of sauce, and
Blizzard [7]

Answer:

B

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Please help! (I'll give brainliest to the first right answer)
eduard

Answer:

1/2: the fourth quadrant

3/4:"Q1: 4,5" "Q2: 4,-1" "Q3: -2,-3" "Q4: 5, -2"

Step-by-step explanation:

hope this helps!

5 0
3 years ago
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