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Stella [2.4K]
3 years ago
7

Pls help me I will give the first answer brainlyist and thanks NO LINKS OR NO BRAINLYIST there are two questions please help

Mathematics
1 answer:
e-lub [12.9K]3 years ago
6 0

Answer:

h(3)= 2

g(8)-g(-5)= 39

Step-by-step explanation:

math is math

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The car travels an average of 40km per litre of fuel, and the cost of fuel is £1.25 per litre. Calculate the cost of the fuel fo
Nuetrik [128]

31075  \div 40 = 776.875 \\ 776.875 \times 1.25 = 971.09375
The cost of fuel was £971.09
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3 years ago
Is perpendicular to ? Explain.
olga2289 [7]
Two lines are perpendicular if and only if the product of their slopes is - 1.

So, you just need to find the slope of each line and find out the product of their slopes.

I will do one example for you.

L1: y = 3x + 5

L2: y = - 3x + 14

L3: y = -x/3 + 14

The slope of a line is the coefficient of the x.

So the slopes are:

L1: slope 3
L2: slope -3
L3: slope -1/3

So now multiply the slopes of each pair of lines:

L1 and L2: 3 * (-3) = - 9 => No, they are not perpendicular

L2 and L3: (-3) * (-1/3) = 1 => No, they are not perpendicular

L1 and L3: (3) *  (-1/3) = -1 => Yes, they are penpendicular.
6 0
2 years ago
Read 2 more answers
In a triangle , the measure of the first angle is twice the measure of the second angle. The measure of the third angle is 100 m
madam [21]

Answer:

The three unknown angles X, Y , and Z are:

X = 40, Y = 20, and Z = 120

Step-by-step explanation:

Let's name X the measure of the first angle, Y the measure of the second one, and Z that of the third one.

Then we can create the following equations:

X = 2 Y

Z = 100 + Y

and

X + Y + Z = 180

So we use the first equation and the second one to substitute for the variable X and Z in the thrid equation:

2 Y + Y + (100 + Y) = 180

4 Y + 100 = 180

4 Y = 80

Y = 80/4 = 20

Then X = 40, Y = 20, and Z = 120

7 0
2 years ago
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babunello [35]
Greetings!

We can factor this expression/ the GCF is:
-10m^2n^7

(-10m^2n^7)(5m^2-4n^3)

Hope this helps.
-Benjamin
8 0
2 years ago
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Jake's family is moving to a new home. They pack 22 boxes in 1 5/6 hours. What is the average number of boxes per hour? Explain.
lbvjy [14]
12 boxes per hour is the answer
7 0
2 years ago
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