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3 years ago

Someone please im crying please

Mathematics

2 answers:

alexdok [17]3 years ago

7 0

Answer:

slope- intercept form: y=3/4 x -7

point slope form: y-4=3/4(x+4)

and dang stop crying... hope this helped

KATRIN_1 [288]3 years ago

5 0

Slope-intercept: y=3x/4 -7

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I need help with 6 and 7. Thanks!!

cupoosta [38]

There will be around 280 phones defective
Around 720 elk will be infected

4 0

3 years ago

A^2-C^2<br><br> Factor this expression completely

klemol [59]

Yo sup??

This question can be solved by using the property

a²-b²=(a-b)(a+b)

Here a=A

b=C

plugging in the values

A^2-C^2=(A-C)(A+C)

Hope this helps

3 0

4 years ago

What is the equation of a circle with radius 4 and center (0,8)?

adoni [48]

The equation of circle with the center at (h,k) is:

$\large \boxed{ {(x - h)}^{2} + {(y - k)}^{2} = {r}^{2} }$

r stands for radius. Therefore r^2 = diameter or 2×radius.

The question has already given the information we need, which are:

radius = 4
the center at (0,8)

Since the center is (h,k) - therefore the center is at h = 0 and k = 8 making it (h,k) = (0,8).

Substitute the values in the equation:

$\large{ {(x - 0)}^{2} + {(y - 8)}^{2} = {4}^{2} }$

Simplify to the simplest form

$\large \boxed{ {x}^{2} + {(y - 8)}^{2} = 16} \: \: \: \: \huge{ \green{\checkmark}}$

Answer

The equation of a circle is x^2+(y-8)^2 = 16

5 0

3 years ago

What is the mean of the following list of extra credit points earned on a statistics test?

eduard

Answer:

Step-by-step explanation:

Given the data :

X : 10,8,18,17,7

The mean value of scores obtained can be obtained thus :

Mean = ΣX / n

n = sample size = 5

Mean = ΣX / n = (10+8+18+17+7) / 5

Mean = 60 / 5 = 12

5 0

3 years ago

Help me please for the brainliest answer

AveGali [126]

Answer with Step-by-step explanation:

$a) {n}^{2} + 3 \\ \\ n = 1 \\ {1}^{2} + 3 \\ 1 + 3 \\ = 4 \\ \\ n = 2 \\ {2}^{2} + 3 \\ 4 + 3 \\ = 7 \\ \\ n = 3 \\ {3}^{2} + 3 \\ 9 + 3 \\ = 12 \\ \\ n = 4 \\ {4}^{2} + 3 \\ 16 + 3 \\ = 19 \\ \\ n = 10 \\ {10}^{2} + 3 \\ 100 + 3 \\ = 103$

In this sequence,

1st term = 4

2nd term = 7

3rd term = 12

4th term = 19

10th term = 103

$b)2 {n}^{2} \\ \\ n = 1 \\ 2 \times {1}^{2} \\ 2 \times 1 \\ = 2 \\ \\ n = 2 \\ 2 \times {2}^{2} \\ 2 \times 4 \\ = 8 \\ \\ n = 3 \\ 2 \times {3}^{2} \\ 2 \times 9 \\ = 18 \\ \\ n = 4 \\ 2 \times {4}^{2} \\ 2 \times 16 \\ = 32 \\ \\ n = 10 \\ 2 \times {10}^{2} \\ 2 \times 100 \\ = 200$

in this sequence,

1st term = 2

2nd term =8

3rd term = 18

4th term =32

10th term = 200

4 0

3 years ago