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castortr0y [4]
3 years ago
9

What's 21v+8-12v-7+3t-1t

Mathematics
1 answer:
kow [346]3 years ago
8 0
21v + 8 - 12v - 7 + 3t - 1t = (combine like terms)

9v + 2t + 1 <==
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Plz help and show work
Helen [10]

Answer:

It is A and D.

Step-by-step explanation:

One answer would be 1.50x + 3600 = 1200, because he sells x many bags for $1.50 each, and add 3600 to it

The other answer is 1.5(2400 + x) = 12000, this is equal to 3600 + 1.5x = 1200, the same as the first equation.

The other answers are all wrong.

5 0
3 years ago
Can you please help me !
Anit [1.1K]

Step-by-step explanation:

Question no 1 ans is -10.

Question no 2 ans is 14.

Question no 3 ans is 7.

Question no 4 ans is 14.

3 0
3 years ago
If y equal 6 what is 2y
katrin2010 [14]

Answer:

12

Step-by-step explanation:

2*6=12

5 0
3 years ago
Read 2 more answers
Last month, he sold 50 chickens and 30 ducks for $550. This month, he sold 44 chickens and 36 ducks for
STALIN [3.7K]
Answer: chicken $8, duck $5

Explanation:

x - the cost of a chicken
y - the cost of a duck

he sold 50 chickens and 30 ducks for $550: 50x + 30y = 550
he sold 44 chickens and 36 ducks for $532: 44x + 36y = 532

50x + 30y = 550                divide by 10
44x + 36y = 550                 divide by 4
______________
50x/10 + 30y/10 = 550/10
44x/4 + 36y/4 = 532/4
______________
5x + 3y = 55                                    
Multiply by (-3)
11x + 9y = 133
______________
5x * (-3) + 3y * (-3) = 55 * (-3)
11x + 9y = 133
______________
-15x - 9y = -165
11x + 9y = 133
______________
Sum up:
-4x + 0y = -32
-4x = -32
x = -32/-4
x = 8

Since 5x + 3y = 55  and x = 8, then:
5 * 8 + 3y = 55
40 + 3y = 55
3y = 55 - 40
3y = 15
y = 15/3
y = 5
6 0
3 years ago
Read 2 more answers
What is the answer to 5/6-3/4 ?
Citrus2011 [14]

Answer:

9/4

Step-by-step explanation:

6 0
3 years ago
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