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Stells [14]
3 years ago
13

How many solutions are there to this equation 3(x-4)+5-x=2x-7

Mathematics
1 answer:
Svetlanka [38]3 years ago
8 0
3x-12+5-x=2x-7
2x-7 =2x-7

Means there are infinite solutions.
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What's 8÷5/9? I give brainliest <3​
Crazy boy [7]

Answer:

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Step-by-step explanation:

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7 0
3 years ago
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Melissa buys 212 pounds of salmon and 114 pounds of swordfish. She pays a total of $31.25, and the swordfish costs $0.20 per pou
eimsori [14]

Answer:

C. $16.60

Step-by-step explanation:

Let the cost per pound of salmon be represented by x

The cost per pound of swordfish be represented by y

Melissa buys 2 1/2 pounds of salmon and 1 1/4 pounds of swordfish. She pays a total of $31.25

2.5 × x + 1.25× y = $31.25

2.5x + 1.25y = 31.25

The swordfish costs $0.20 per pound less than the salmon.

y = x - 0.20

Hence, we substitute

2.5x + 1.25y = 31.25

2.5y + 1.25(x - 0.20) = 31.25

2.5y + 1.25x - 0.25 = 31.25

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3.75x = 31.5

x = 31.5/3.75

x = $8.4

The cost per pound of salmon be represented by x = $8.4

y = x - 0.20

y = 8.4 - 0.20

y = $8.2

The cost per pound of swordfish be represented by y = $8.2

The cost of a pound of salmon and sword fish

= $8.4 + $8.2

=$16.60

3 0
3 years ago
Please help <br> How can you describe the graph of the equation y = mx? Explain
Mumz [18]

Answer:

Every straight line can be represented by an equation: y = mx + b. ... The equation of any straight line, called a linear equation, can be written as: y = mx + b, where m is the slope of the line and b is the y-intercept. The y-intercept of this line is the value of y at the point where the line crosses the y axis.

Step-by-step explanation:

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The amount of the down payment is
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So the amount she has to pay after making the down payment is
1,040−135.2=904.8

It's d
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olya-2409 [2.1K]

Answer:

7.78

Step-by-step explanation:

4 0
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