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Vedmedyk [2.9K]
3 years ago
11

Jordan solved the equation −7x + 25 = 48; his work is shown below. Identify the error and where it was made. −7x + 25 = 48 Step

1: −7x + 25 − 25 = 48 − 25 Step 2: −7x = 23 Step 3: negative seven times x over seven = twenty-three over seven Step 4: x = twenty-three over seven Step 1: He should have added 25 to each side. Step 1: He should have divided both sides by −7. Step 3: He should have divided both sides by −7. Step 3: He should have multiplied both sides by −7.
Mathematics
1 answer:
almond37 [142]3 years ago
6 0

Answer:

Step 4 : he should have divided both sides by negative seven

Step-by-step explanation:

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How much is 8% of 800 tons?
bonufazy [111]
1. We assume, that the number 800 is 100% - because it's the output value of the task.
2. We assume, that x is the value we are looking for.
3. If 800 is 100%, so we can write it down as 800=100%.
4. We know, that x is 8% of the output value, so we can write it down as x=8%.
5. Now we have two simple equations:
1) 800=100%
2) x=8%
where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:
800/x=100%/8%
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for what is 8% of 800

800/x=100/8
(800/x)*x=(100/8)*x - we multiply both sides of the equation by x
800=12.5*x - we divide both sides of the equation by (12.5) to get x
800/12.5=x
64=x
x=64

now we have:
8% of 800 tons =64 Tons
I hope this helped!!
5 0
3 years ago
Write an equation of the line parallel to x+2y=-4 through the point (-8,5)<br> show all work
scoundrel [369]

Answer:

The equation of the parallel line would be y = -1/2x + 1

Step-by-step explanation:

To start we need to find the slope of the original  line. We can do that by solving for y.

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y = -1/2x - 2

Since the slope of the original line is -1/2 and parallel lines have the same slope, we know the new line will also have -1/2 slope. Now we can use that along with the point given in point-slope form to get the find equation.

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4 0
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balu736 [363]

Answer:

1 1/3

Step-by-step explanation:

4 0
3 years ago
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Item 2 Solve. {y=3x−49x−3y=14 Use the substitution method. There are an infinite number of solutions. The solution is (14, 12).
Black_prince [1.1K]

id have to say the best Answer Choice is A. there is an infinite number of solutuons. i hope this helps.

5 0
3 years ago
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Work out the volume of the prism (answer in 1 decimal place)
Artyom0805 [142]

Answer:

Volume of the Prism =204 cm^3

Step-by-step explanation:

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Putting the values in the formula:

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4 0
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