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Dima020 [189]
3 years ago
8

Solve the system of equation by elimination. 6x-3y=-21 4x=3y-9

Mathematics
1 answer:
dedylja [7]3 years ago
5 0
2x=-12 simplified, the expression or solving for X would be X=-6
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Please help?!?!?!?! Thanks if you do
Fynjy0 [20]
The answer:  F = 1.7 ml

7 0
3 years ago
(x + 5 1/2) 0.75= 5/8 What is x?
swat32
<span>(x + 5 1/2) 0.75= 5/8<span>
Convert 0.75 into a fraction
</span></span><span>(x + 5 1/2) 3/4= 5/8
Use distributive property
3/4x + 5 1/2*3/4 = 5/8
Convert 5 1/2 into improper fraction
3/4x + 11/2*3/4 = 5/8
Multiply
3/4x + 33/8 = 5/8
Subtract 33/8 from both sides
3/4x = 5/8 - 33/8
Subtract the numerators but NOT the denominators
3/4x = -28/8
Divide 3/4 on both sides
x = -28/8 divided by 3/4
Convert the division sign to multiplication while flipping the fraction 3/4 to 4/3
x = -28/8 * 4/3
Multiply
Final Answer: x = -112/24 or -4 16/24 or -4 4/6 or -4 2/3 *All answers are equivalent to each other.</span>
7 0
3 years ago
Is this all correct?
Doss [256]

Answer:

No

Step-by-step explanation:

11. Correct

11a. a is the number of accessories bought

12. 32 = 3.5a + 25

7 = 3.5a

a = 2

12a. cost of the bear

13. correct

13a. f(-1)=8

3 0
2 years ago
What is the value of x, when x2 + 5 = 21? A) 2 or -2 B) 4 or -4 C) 5.5 or -5.5 D) 8 or -8
lord [1]
X would be equal to 8.
4 0
2 years ago
Read 2 more answers
Jennifer 4 years older than her sister, Rebecca. Their ages sum to 28. How old are each of the sisters?
Musya8 [376]

Answer:

Rebecca is 12

Jennifer is 16

Step-by-step explanation:

28 - 4 = 24

24 : 2 = 12

12 + 4 = 16 (Jennifer)

28 - 16 = 12 (Rebecca)

8 0
3 years ago
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