MATHEMATICS HIGH SCHOOL

2x -y=-1
3x-2y=1
elimination somebody do this for me

Answers

Answer 1
Answer: 2x-y=-1  (1)
3x-2y=1  (2)
(1) * 2--> 4x-2y=-2   (3)
(3) - (2)
x= -3

sub x= -3 into (1)
2(-3)-y=-1
-6-y=-1
-y=5
y= -5
Answer 2
Answer: -2(2x-y)=-1
3x-2y=1

-4x+2y=2
3x-2y=1

-x=3 (x=-3)
(-3,__)

2(-3)-y=-1
-6-y=-1
-y=-1+6
-y=5
y=-5
so..(-3,-5)
  

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13 over 15 divided by 7 over 10 in simplest form

Answers

If you would like to write (13/15) / (7/10) in the simplest form, you can calculate this using the following steps:

(13/15) / (7/10) = (13/15) * (10/7) = (13 * 2) / (3 * 7) = 26/21 = 1 5/21

The correct result would be 26/21.

A baseball team has a record of 47 wins and 39 losses. How many games must the team win, in a row, so that the winning percentage will be above 70%?A: 23 wins
B: 13 wins
C: 14 wins
D: 32 wins
E: 44 wins

Answers

A baseball team has a record of 47 wins and 39 losses, then they have to win 44 games in a row so that their winning percentage will be above 70%. Hence, option E is correct.

What is the percentage?

The Latin term "per centum," which signifies "by the hundred," is where the word "percentage" originally came from. With 100 as the denominator, percentage are fractions. To put it another way, it's the relationship here between component and a whole, in which the value of the whole is always assumed to be 100. A specific portion or amount in each hundred is referred to as the percentage. The fraction is denoted by the sign "%," and its denominator is 100.

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Answer:

44 wins

Step-by-step explanation:

47+39+x/100*70

Which image shows a reflection?

Answers

Answer: A, because it is the closest one out of all the choices to show a reflection.
Reasons: B is just a translation, just moved down a few spots. And C has been moved 90 degrees clockwise.

Answer:

A

Step-by-step explanation:

We can see that:

- Shape B has just been translated down (moving down a couple of squares)

- Shape C has been rotated 90° clockwise

After excavating a lot, workers removed an estimated 7,000 cubic yards of dirt from the area. If this dirt were spread in an even layer over an empty lot with dimensions 30 yards by 64 yards, about how deep, in yards, would the layer of dirt be? Can you help me with this?

Answers

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If 35% of a number is 150, find 15% if the number

Answers

Answer:

64 2/7

Step-by-step explanation:

0.35x = 150

x = 3000/7

0.15(3000/7) = 450/7 = 64 2/7

Solve for b if 7+16b=29+5b

Answers

7 + 16b = 29 + 5b

Keep the variables on one side

16b - 5b = 29 - 7

11b = 22

Divide by 11 isolate b:

(11b)/(11) = (22)/(11)
11 and 11 cancels out

b = 2

check:
7 + 16(2) = 29 + 5(2)
7 + 32 = 29 + 10
39 = 39
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