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Margarita [4]
3 years ago
14

 Find the coordinates of the midpoint between (–1, 2) and (3, –6).

Mathematics
1 answer:
lesantik [10]3 years ago
6 0

Answer:

option D

(1, -2)

Step-by-step explanation:

Given in the question are coordinates,

(–1, 2) and (3, –6)

x1 = -1

x2 = 3

y1 =2

y2 = -6

Formula to calculate midpoint

\frac{x1+x2}{2},\frac{y1+y2}{2}

\frac{-1+3}{2},\frac{2-6}{2}

\frac{2}{2},\frac{-4}{2}

(1,-2)

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25 POINTS! PLEASE HELP MEEEEE!
serg [7]

Answer:

14981yd^2

Step by step:

1) surface area formula: SA=2bs+b^2

s=height

b=square of base

so

SA=2*71*70+71^2

SA=2*71*70+5041

SA=9940+5041

SA=14981

7 0
4 years ago
The number of members in an organization since the year 2000 can be represented by the function below where x represents the num
egoroff_w [7]

Given:

The number of members in an organization since the year 2000 can be represented by the function

m(x)=x^2+42x+5

where,  x represents the number of years after 2000.

To find:

The statement  which best describes the term 5.

Solution:

We have,

m(x)=x^2+42x+5

It is clear that 5 is a constant because it is free from variable x.

At x=0,

m(0)=(0)^2+42(0)+5

m(0)=5

It means, 5 is the initial number of members in the organization.

Therefore, there are 5 members in the organization in year 2000.

4 0
3 years ago
Help plz thanks ........?.?!
Paladinen [302]
I got 4/27

I did 8/9 divided by 6/1
3 0
3 years ago
Read 2 more answers
ASAP!! Please help me. I will not accept nonsense answers, but will mark as BRAINLIEST if you answer is correctly with solutions
jeyben [28]

Answer:

c.) x-2

Step-by-step explanation:

5 0
4 years ago
Read 2 more answers
Assume that the flask shown in the diagram can be modeled as a combination of a sphere and a cylinder. Based on this assumption,
kompoz [17]

If the flask shown in the diagram can be modeled as a combination of a sphere and a cylinder, then its volume is

V_{flask}=V_{sphere}+V_{cylinder}.

Use following formulas to determine volumes of sphere and cylinder:

V_{sphere}=\dfrac{4}{3}\pi R^3,\\ \\V_{cylinder}=\pi r^2h,

wher R is sphere's radius, r - radius of cylinder's base and h - height of cylinder.

Then

  • V_{sphere}=\dfrac{4}{3}\pi R^3=\dfrac{4}{3}\pi \left(\dfrac{4.5}{2}\right)^3=\dfrac{4}{3}\pi \left(\dfrac{9}{4}\right)^3=\dfrac{243\pi}{16}\approx 47.71;
  • V_{cylinder}=\pi r^2h=\pi \cdot \left(\dfrac{1}{2}\right)^2\cdot 3=\dfrac{3\pi}{4}\approx 2.36;
  • V_{flask}=V_{sphere}+V_{cylinder}\approx 47.71+2.36=50.07.

Answer 1: correct choice is C.

If both the sphere and the cylinder are dilated by a scale factor of 2, then all dimensions of the sphere and the cylinder are dilated by a scale factor of 2. So

R'=2R, r'=2r, h'=2h.

Write the new fask volume:

V_{\text{new flask}}=V_{\text{new sphere}}+V_{\text{new cylinder}}=\dfrac{4}{3}\pi R'^3+\pi r'^2h'=\dfrac{4}{3}\pi (2R)^3+\pi (2r)^2\cdot 2h=\dfrac{4}{3}\pi 8R^3+\pi \cdot 4r^2\cdot 2h=8\left(\dfrac{4}{3}\pi R^3+\pi r^2h\right)=8V_{flask}.

Then

\dfrac{V_{\text{new flask}}}{V_{\text{flask}}} =\dfrac{8}{1}=8.

Answer 2: correct choice is D.


8 0
4 years ago
Read 2 more answers
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