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Stells [14]
3 years ago
7

Help with it all, don't understand this

Mathematics
1 answer:
Ganezh [65]3 years ago
5 0
Number 3 it is a factor because if u expand you will see that x+6 will be the answer
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Type the correct answer in the box.
Wittaler [7]

Answer:

k=-2ax+10a+y,

Step-by-step explanation:

8 0
3 years ago
P = 14.7e-0.21x, where x is the number of miles above sea level. To the nearest foot, how high
AlladinOne [14]

9514 1404 393

Answer:

  13064 feet

Step-by-step explanation:

We can rewrite the formula so that x is in feet. Equating the new formula to 8.743 PSI, we have ...

  8.743 = 14.7e^(-0.21x/5280)

Dividing by 14.7 and taking natural logs, we have ...

  ln(8.743/14.7) = -0.21x/5280

Multiplying by the inverse of the coefficient of x gives ...

  x = 5280·ln(8.743/14.7)/-0.21 ≈ 13064.0806

The peak of the mountain is about 13,064 feet high.

5 0
2 years ago
2x+4y=12 y=0.25x-3 What is the solution to the system of equations?
ololo11 [35]
{ 2 x + 4 y = 12
   y = 0.25 x -3

Arrange equation variables of elimination :

{ 2 x + 4 y = 12
 -0.25 x  + y = - 3

Multiply  ( -0.25 x +y = - 3 )  by 8 :

8y - 2 x =  - 24 

{ 2 x + 4y = 12
  -2x + 8y  = -24
----------------------
        12 y = -12

y = - 12 / 12

y = - 1

For x :

2 x  + 4y = 12

2 x + 4 ( - 1 ) = 12

2 x - 4 = 12

2 x = 12 + 4

2 x =  16

x = 16 / 2

x = 8

x = 8 and y = - 1  =>  ( 8 , - 1 )

Answer b

hope this helps!


7 0
3 years ago
Imagine two line segments where each represents a slant height of the cone. The segments are on opposite sides of the cone and m
noname [10]

Imagine that we cut the cone in half with a vertical plane. In this plane we'd see points a, b and c. We need to find the measure of angle bca, and then double that angle, to obtain the answer to this problem.

Note that tan (angle bca) = opp / adj = 2 / 6, or 1/3, or 0.333...

Working backwards to find angle bca, we use the inverse tangent function:

arctan 0.3333.. = approx. 0.322 radians, or 18.435 degrees.

Doubling that gives us the measurement of the angle formed between the line segments: 2(18.435 deg) = 36.9 degrees, approximately.

5 0
3 years ago
Read 2 more answers
22222222222222+2222222222222222222
olga_2 [115]

Answer:

22222222222222+2222222222222222222

= 2222244444444444444

Step-by-step explanation:

If you like my answer than please mark me brainliest thanks

6 0
2 years ago
Read 2 more answers
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