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ElenaW [278]
3 years ago
10

Simplify −2(2h+10)+4h

Mathematics
2 answers:
Anuta_ua [19.1K]3 years ago
7 0
First distribute: -4h - 20 + 4h
Combine like terms: -20
The answer is -20
Anna [14]3 years ago
7 0
Distribute -2 through the parentheses, - 4 h - 20 + 4 h , eliminate the opposite which will give you your answer as -20
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What are the critical points for g(θ) = 20θ − 5 tan θ
jarptica [38.1K]

g(θ) = 20θ − 5 tan θ

To find out critical points we take first derivative and set it =0

g(θ) = 20θ − 5 tan θ

g'(θ) = 20 − 5 sec^2(θ)

Now we set derivative =0

20 − 5 sec^2(θ)=0

Subtract 20 from both sides

− 5 sec^2(θ)=0 -20

Divide both sides by 5

sec^2(θ)= 4

Take square root on both sides

sec(θ)= -2  and sec(θ)= +2

sec can be written as 1/cos

so sec(θ)= -2  can be written as cos(θ)= -1/2

Using unit circle the value of θ is \frac{2\pi}{3} and\frac{4\pi}{3}

sec(θ)= 2  can be written as cos(θ)=1/2

Using unit circle the value of θ is \frac{\pi}{3}and\frac{5\pi}{3}

For general solution we add 2npi

So critical points are

\frac{2\pi}{3} + 2n\pi,\frac{4\pi}{3} + 2n\pi , \frac{\pi}{3} + 2n\pi, \frac{5\pi}{3} + 2n\pi


6 0
3 years ago
What is the range of possible sizes for side x? the other two sides are 8.0 and 8.5
kirza4 [7]

Answer: 0.5 < x < 16.5.

Step-by-step explanation:

Given: Two sides of triangle: 8.0 units and 8.5 units

Measure of third side = x

According to the triangle's inequality,

  • Sum of any two sides > third side.    (i)
  • Difference between the sides < third side.    (ii)

If x is the third side, then

x < 8+8.5   [Using (i)]

i.e. x< 16.5  

Also, x > 8.5-8   [Using (ii)]

i.e. x> 0.5

Hence, Range of possible sizes for side x would be 0.5 < x < 16.5.

8 0
3 years ago
List the domain for the following relation <br><br> (4,1) , (-6,1) , ( 2,7) , (4,-3) , (8,3)
Colt1911 [192]

Answer:

4,-6,2,4,8

Step-by-step explanation:

the domain are the one at the top like the numerator of a fraction

6 0
3 years ago
Write an equation of the line that passes through (-3,3) and is perpendicular to the line 2y=8x-6
jok3333 [9.3K]

Answer:

y = (-1/4)x + 9/4

Step-by-step explanation:

2y = 8x - 6

So, y = 4x - 3  (Slope = 4)

Slope of perpendicular line = -1/4

Equation of line:  y-3 = (-1/4)(x-(-3))

                          y-3 = (-1/4)x - 3/4

                             y = (-1/4)x + 9/4

3 0
3 years ago
vanesa multiplies two integers. When she adds the product to 4, the sum is 0. What can you say about the two integers
Lelu [443]
The Integers Are Positive They Are Not Negative Numbers. If It Was Negative It Would Be -2,-3,-4. While If It's Positive It Should Be 0,1,2,3,4 And So On.
4 0
3 years ago
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