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vekshin1
3 years ago
6

Work out the mean mark

Mathematics
1 answer:
KonstantinChe [14]3 years ago
8 0

Answer:

8.5

Step-by-step explanation:

To find the mean, you have to add the terms, and divide the sum by the number of terms.

7+8+9+10=34

34/4=8.5

-hope it helps

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How is a coordinate grid a useful way to describe exactly where an object is?
Elenna [48]

Answer:

because you can show the exact points an object is at

Step-by-step explanation:

For example: A car goes x many miles in y minutes. You can easily see how many miles the car goes in y minutes.

Hope this helps!

6 0
3 years ago
Using the letters GBLAOKZE you select the A from the group without replacing the A,you select a second letter.find P(not K)
andre [41]

Answer:

Step-by-step explanation:

After selecting A there are 6 letters that are not K out of the remaining 7 letters so

P(!K)=6/7

5 0
3 years ago
Please help me!!!!!!!!!
kiruha [24]

Answer:

Step-by-step explanation:

Using the equation of line

y - y_1 = m(x - x_1)

y = mx + C

First first the slope of the equation

y = 9x - 4

Note: if two lines are perpendicular, their slope will be negative reciprocal

Slope = 9, but because it is perpendicular

m = -1/9

Using the equation

y - y_1 = m(x - x_1)

With the point (-9,-17)

x_1 = -9

y_1 = -17

y - (-17) = -1/9(x - (-9)

y + 17 = -1/9(x + 9)

y = -1/9(x + 9) - 17

Open the bracket.

y = (-x -9)/9 - 17

Lcm is 9

y = -x -9 - 153 / 9

y = -x - 162 / 9

Let's separate

y = -x/9 - 162/9

y = -x/9 - 18

y = -1/9x - 18

Therefore, the equation of the line is y = -1/9x - 18

5 0
3 years ago
Simplify -4m + 5n - 2 - 3m + 3n + 7.
aniked [119]

Answer:

-7 m + 8 n + 5

Step-by-step explanation:

-4m + 5n - 2 - 3m + 3n + 7

combine like terms

-4m -3m +5n +3n -2+7

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6 0
3 years ago
If it takes for men six hours to repair a road how long will it take three men to do the job if they work at the same rate?
Otrada [13]
It will take three men seven hours and thirty minutes to repair the road. Hope it helps, God bless
4 0
4 years ago
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