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3 years ago

Please help me idk this

Mathematics

1 answer:

Marina CMI [18]3 years ago

6 0

Answer:

69.08

Step-by-step explanation:

C= $\pi d$

C= $22$ × $3.14$

C≈ $69.08$

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Write the equation of the line of best fit using the slope-intercept formula $y = mx + b$. Show all your work, including the poi

Dennis_Churaev [7]

Answer:

$y=\frac{5}{7}x+\frac{135}{7}$

Step-by-step explanation:

You only need two points on a line to find the equation for that line.

We are going to use 2 points that cross that line or at least come close to. You don't have to use the green points... just any point on the line will work. You might have to approximate a little.

I see ~(67.5,67.5) and ~(64,65).

Now once you have your points, we need to find the slope.

You may use $\frac{y_2-y_1}{x_2-x_1}$ where $(x_1,y_1) \text{ and } (x_2,y_2)$ are points on the line.

Or you can line up the points vertically and subtract then put 2nd difference over 1st difference.

Like this:

( 64 , 65 )

-( 67.5, 67.5 )

--------------------

-3.5 -2.5

So the slope is -2.5/-3.5=2.5/3.5=25/35=5/7.

Now use point-slope form to find the equation:

$y-y_1=m(x-x_1)$ where $m$ is the slope and $(x_1,y_1)$ is a point on the line.

$y-65=\frac{5}{7}(x-64)$

Distribute:

$y-65=\frac{5}{7}x-\frac{5}{7}\cdot 64$

Simplify:

$y-65=\frac{5}{7}x-\frac{320}{7}$

Add 65 on both sides:

$y=\frac{5}{7}x-\frac{320}{7}+65$

Simplify:

$y=\frac{5}{7}x+\frac{135}{7}$

6 0

3 years ago

What is the answer of this question

zvonat [6]

The right answer is x^2-1.

EXPLANATION:

To be a polynomial, the power of each term must be a whole number.

Hope it will be helpful to you...

Good luck on your assignment

~pragya

6 0

4 years ago

An average drop of blood contains about 1.6 x 10^4 white blood cells. A rare drop of blood contains about 5 x 10^4 white blood c

Alekssandra [29.7K]

Answer:

3.4 x 10^4

Step-by-step explanation:

1.6 x 10^4 - 5 x 10^4 = -3.4 x 10^4

5 x 10^4 - 1.6 x 10^4 = 3.4 x 10^4

6 0

3 years ago

Which of the k values are solutions to the following equation? k2 = 0.49

madam [21]

C and D bc +-0.7 is the answer
but because there no answer which contains both i think u should mark E

7 0

3 years ago

Read 2 more answers

Find three consecutive even integers such that 4 times the third integer is 4 more than the 3 times the first integer plus two t

musickatia [10]

Let lowest integer be n then

4(n + 4) = 3n + 2(n + 2) + 4

4n + 16 = 5n + 8
8 = n

so three integers are 8,10 and 12.

4 0

3 years ago