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joja [24]
3 years ago
15

I need help with this

Mathematics
1 answer:
Marina CMI [18]3 years ago
6 0
Yea I’m not sure more info?
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Use the line of best fit to estimate the French score for a student who got 65 in maths.
just olya [345]

Using a linear function, it is found that the estimated French score is of 38.1875.

A <em>linear function</em> has the following format:

y = mx + b

In which:

  • m is the slope.
  • b is the y-intercept.

Searching the problem on the internet, it is found that two points of the line of best-fit are: (10,65) and (90,26).

The slope is given by <u>change in the output divided by the change in the input</u>, hence:

m = \frac{26 - 65}{90 - 10} = -0.4875

Then:

y = -0.4875x + b

Point (10,65) means that when x = 10, y = 65, and this is used to find b.

y = -0.4875x + b

65 = -0.4875(10) + b

b = 69.875

Hence:

y = -0.4875x + 69.875

For a student who got 65 in math, x = 65, and hence:

y = -0.4875(65) + 69.875 = 38.1875

The estimated French score is of 38.1875.

For more on linear functions, you can check brainly.com/question/16302622

7 0
3 years ago
Which answer would it be?<br> A. Graph C<br> B. Graph B<br> C. Graph A<br> D. Graph D
Mkey [24]

Answer:

C

Step-by-step explanation:

y < 1/3x -4

The y intercept is -4

The slope is 1/3

y is less than so the line is dotted

y is less than so we colour below the line

Please vote for Brainliest and I hope this helps!

5 0
2 years ago
TRUE or FALSE. <br><br> DEFG is definitely a parallelogram.
Lady_Fox [76]

Answer:

True

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Can someone please help me out<br> ASAP I WILL GIVE OUT BRAINLY
SashulF [63]

Answer:

x = 9

Perimeter = 74

Area = 342

Step-by-step explanation:

First, find x. to do so, set your formula up as

18 = 8x - 54

18 + 54 = 8x

72 = 8x

72/8 = x

9 = x

Now that you have x, find your missing side

2x + 1 = y, x

2 * 9 + = y

19 = y

Your perimeter is P = 2(l+W)

P = 2(18 * 19)

P = 74

Your area is A = wl

A = 19 * 18

A = 342

3 0
3 years ago
Read 2 more answers
Please Help me :)<br> .<br> .<br> .<br> .<br> .
Softa [21]
The correct answer is x = 20
4 0
3 years ago
Read 2 more answers
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