3 years ago

For which equation would x = 3 be a solution?

Mathematics

1 answer:

frutty [35]3 years ago

7 0

1. b , 2. A

this has toooo have 20 or more letters soooo i’m doing thissssss hiiiii

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schepotkina [342]

Answer:

(6 , -1)

Step-by-step explanation:

2x+ y = 11 ----------------(I)

y = 11 - 2x --------------------(II)

$\frac{1}{2}x - 5y = 8$

Multiply the whole equation by 2

$2*\frac{1}{2}x -2*5y = 2*8$

x - 10y = 16 --------------------(III)

Substitute y = 11- 2x in equation (III)

x - 10(11 - 2x) = 16

x - 110 + 20x = 16

21x - 110 = 16

21x = 16 +110

21x = 126

x = 126/21

x = 6

Plugin x = 6 in equation (II)

y = 11 - 2*6

y = 11 - 12

y = -1

5 0

2 years ago

Justine had 88 dolphin stickers. She gave 4 stickers each to 6 friends. How many stickers does Justine have left?

MatroZZZ [7]

Answer:64

Step-by-step explanation:

4×6=24

88-24=64

3 0

3 years ago

5. The temperature was

Vesna [10]

Answer:

6.2 is the difference

Step-by-step explanation:

4 0

3 years ago

6/x-8=2/x+6 how do i solve this

lutik1710 [3]

6/(x-8)=2/(x+6)
times both sides by (x-8)(x+6)
6(x+6)=2(x-8)
distribute
6x+36=2x-16
minus 2x both sides
4x+36=-16
miinus 36 both sides
4x=-52
divide both sides by 4
x=-13

8 0

4 years ago

Which is an expression to find the time in hours? d = 38 miles, r = 2 miles/hour A.38*2 B.38/2 C.38+2 D.38-2

Cerrena [4.2K]

Based from background knowledge, I believe that the correct answer among all of the given choices would be B.) 38/2. This would give you 19. If I am mistaken, please correct me. But I am definitely positive that this is the right answer.

I hope this is the answer you were looking for and that it helps!! :)

6 0

3 years ago