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egoroff_w [7]
3 years ago
10

John earned three dollars for each lawn he mowed. If he had eight lawns to mow, but forget mow two of them, how much money did h

e actually earn?
Mathematics
1 answer:
gayaneshka [121]3 years ago
4 0
If John had to mow 8 lawns, but he forgot to mow 2 lawns, we have to subtract 2 from 8 to see how many lawns he actually mowed.

8-2=6

John mowed 6 lawns!

For each lawn John mowed, he earned 3 dollars. So, we have to multiply the number of lawns he mowed, 6, by the amount of dollars he earned per lawn, 3. Multiplying 6*3 is the same as adding 3+3+3+3+3+3!

6*3=18

John earned $18!

Hope I helped! :)

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Help me please, kinda lost
Dmitry_Shevchenko [17]

Answer:

400cm^2

Step-by-step explanation:

For this question, you need to find the surface areas of both objects, then add them together.

For the cube:

56cm for the front

56cm for the back

42cm for the side

42cm for the other side

48cm for the top

48cm for the bottom

SA for the cube: 292cm^2

For the triangle, things are a little different. We do the same process that we did to find the SA of the cube, but we do not have to find the SA of the top side (because there isn't a top side) and we have to divide the total SA by 2 because it's a triangle.

For the triangle:

42cm for the front

42cm for the back

54cm for the slanted side

42cm for the other side

36cm for the bottom

SA for the triangle: (216/2)^2=108cm^2

292+108=400cm^2

the SA of the composite figure is 400cm^2

8 0
3 years ago
Find the slope of the line that goes through the given points (8,5) (6,7)
vazorg [7]
To find the slope of a line that goes through given points with known coordinates, you divide the subtraction of the y of the second point minus the y of the first point, by the subtraction of the x of the second point minus the x of the first point:
m = (yB-yA) / (xB-xA)

Let A(8,5) and B(6,7).
With yB = 7; yA = 5; xB = 6; xA = 8
m = (7-5) / (6-8)
m = 2/-2
m = -1

So the slope of the line that goes through the given points (8,5) and (6,7) is m = -1.

I've added a pic of the line with both points under the answer.

Hope this Helps! :)

4 0
2 years ago
Can someone show me the answer + how they got there? (x+4)(x-1)
Naily [24]

Answer:

x^2+3x-4

Step-by-step explanation:

x * x - x + 4x - 4

x^2 - x + 4x - 4

x^2 + 3x - 4

6 0
3 years ago
Read 2 more answers
Jim has received scores of 72 72 and 77 77 on his first two 100 point tests. what score must he get on his third 100 point test
Alisiya [41]
77+72=149 
149/2=74.5 
through the process of elimination, I found that Jim needs to get an 88 or higher to receive an average of 79 or greater. 

77+72+88=237 
237/3=79
7 0
3 years ago
Use the grouping method to factor the polynomial below completely.
xxMikexx [17]
The correct answer is C, if you use the distributive property and multiply all of them by each other you would get x^3+2x^2+3x+6.

Hope this helps :-)

7 0
2 years ago
Read 2 more answers
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