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Mnenie [13.5K]
3 years ago
12

Answer the photo below thanks

Mathematics
1 answer:
MArishka [77]3 years ago
7 0

Answer:

i think the answer is C

sorry if i am wrong

Step-by-step explanation:

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If 2x – 10y = -1 and 5x + 6y = 4 are true equations, what would be the value<br> of 7x - 4y?
Zigmanuir [339]

Answer:

Step-by-step explanation:

If the equations are true, they can be solved simultaneously.

Consider 2x-10y=-1 as Eq1 and 5x+6y=4 as Eq2

Multiplying Eq1 with 3 and Eq2 with 5 we get,

6x-30y=-3 -- Eq3 and 25x+30y=20 -- Eq4

Adding Eq3 and Eq4,

31x=17 Therefore, x=17/31

Plugin x=17/31 in Eq3,

6(17/31)-30y=-3 --- y=13/62

Plug In values of x and y in 7x-4y we get,

7(17/31)-4(13/62) = 3

So the value of 7x-4y = 3.

8 0
2 years ago
If 2x-6=0 the x =? ​
Oliga [24]

Answer:

x=3

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Which set of expressions are not equivalent?
IrinaK [193]
Expression,
• 4(3a) - 2(4a) and 4a2
is not equivalent.

3 0
3 years ago
If Jim works at Fire Fighting Equipment, has $32,874 in sales in one week,
maria [59]
Gross income= $813.61
Step-by-step explanation:
Giving the following information:
Sales= $32,874
Fixed salary= $452
Commission= 1.1% paid on sales in excess of $25,000.
To calculate the gross income, we need to use the following formula:
Gross income= 452 + y*x
y= percentage comission
x= sales
For $32,874 sales:
Gross income= 452 + 0.011*32,874
Gross income= $813.61
5 0
2 years ago
A model of a​ tractor-trailer is shaped like a rectangular prism and has width 3 in.​, length 10 in.​, and height 4 in. The scal
aleksandr82 [10.1K]
33 plus 4 is 37 and 10plus 1 is 12 so add that and get 49
7 0
3 years ago
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