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MrMuchimi
3 years ago
8

How would you solve

Mathematics
1 answer:
harkovskaia [24]3 years ago
4 0

4r^-3 * 2r^2 =

4*(2r^(-3+2))

= 4*2r^-1

= 4*2(1/r)

= 4*(2/r)

=8/r

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Michael cuts a piece of wood for a project. The first cut is shown and can be represented by the equation . The second cut needs
Verdich [7]
Short Answer: A
Remark

The second cut is going to have the same slope as the original line. The lines are parallel.

Step One
You need to find the slope. That is the main part of this problem. You can pick any 2 points on the graph to do that.

<em>Point one</em> 
(- 11, 10) That point is on the upper left of the line

<em>Point Two</em>
The y intercept is a handy point in this question. It is right on the y axis. Each square counts as 2, so it is at (0,6)

<em>Formula</em>
slope = m = (y2 - y1) / (x2 - x1)

<em>Givens</em>
y2 = 10
y1 = 6
x2 = -12    Each square counts as 2 in the x direction.
x1 = 0

<u>Substitute and solve.</u>
m = (10 - 6) / (-12 - 0)
m = 4/ - 12
m = - 1/3

Step Two
Find the y intercept of the new line using the given point. 

So far what we have is  
y = (-1/3)x + b
The point used for the second line is (0,-2)
-2 = (-1/3)*0 + b 
b = - 2

Answer
The second line is
y = (-1/3)x - 2

8 0
4 years ago
7. Find another rational number in lowest form that would be between each of the pairs of rational
Marianna [84]
6:3!)4 hope it helps
3 0
3 years ago
In triangle ABC, if m_A = 30, a = 6, and b= 8, then sin B is
andriy [413]

9514 1404 393

Answer:

  sin(B) = 2/3

Step-by-step explanation:

The law of sines tells you the sine of an angle is proportional to the length of the opposite side.

  sin(B)/b = sin(A)/a

  sin(B)/8 = sin(30°)/6 . . . . fill in the given values

  sin(B) = 8(1/2)/6 . . . . . . . .multiply by 8

  sin(B) = 2/3

6 0
3 years ago
Show that (-27x-9) / (3x^2+4x+1) is a transformation of 1/x.
Dominik [7]
Since the quotient of -27x + 9 and 3x² + 4x + 1 is equal to -9x⁻¹, it is equal to -9/x, which is a trans for mation of 1/x.


                            
5 0
3 years ago
The area of a rectangular garden in square feet can be represented by 22 - 102 +21. The length is 2 - 7 feet. You have been hire
Anettt [7]

The area of a rectangular garden in square feet can be represented by z² - 10z +21. The length is z - 7 feet. You have been hired to fertilize the

garden. Recall that the area of the garden is z² - 10z +21. If z = 20 and the fertilizer costs $0.27 per square foot, how much it cost to fertilize

the garden?

Answer:

$ 59.67

Step-by-step explanation:

The area of a rectangular garden in square feet can be represented by z² - 10z +21 square feet

If z = 20

Therefore:

The area of the rectangular garden is:

20² - 10 × 20 + 21

400 - 200 + 21

= 221 square feet

The fertilizer costs $0.27 per square foot, how much it cost to fertilize

the garden?

The cost of fertilize the garden is calculated as:

1 square feet = $0.27

221 square feet = x

Cross Multiply

221 square feet × $0.27

=$ 59.67

4 0
3 years ago
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