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lubasha [3.4K]
3 years ago
15

2 sin^2(x) + 3sin(x) + 1 - 0 in radians

Mathematics
1 answer:
alexira [117]3 years ago
7 0
This was a quadratic formula
sin is the y value
here is me solving it

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There is a stack of 8 cards each given a different number from 1 to 8. Suppose we select a card randomly from the stack, replace
Alex Ar [27]

Answer:

Step-by-step explanation:

odd numbers are 1,3,5,7

number of odd cards=4

Total number of cards=8

Number of cards less than 4=3  {1,2,3}

Required~probability=\frac{4}{8} *\frac{3}{8} =\frac{3}{16}

3 0
3 years ago
Read 2 more answers
Paul has completed 140 laps so far this season. He completes an additional 12 laps during each practice. Jacklyn has completed 5
kakasveta [241]

Paul: 140 + 12x

Jacklyn: 56 + 16x

Where x is how many practice sessions he had this season

"After how many more practices will Paul and Jacklyn have completed the same number of laps?"

This means what will x be if both equations are equal to each other

140 + 12x = 56 + 16x

Isolate x in one side by subtracting both sides by 12x

140 + 12x - 12x = 56 + 16x - 12x

140 = 56 + 4x

Subtract both sides by 56 to shift the 56 from the right side to the left side

140 - 56 = 56 - 56 + 4x

84 = 4x

Divide both sides by 4 to isolate x

84/4 = 4/4x

21 = x

x = 21

They'll have completed the same number of laps after 21 practices

Hope it helps :)

Branliest would be appreciated

6 0
3 years ago
An ant looks up to the top of a tree at an angle of elevation of 40 degrees. If the ant is 30 feet from the base of the tree, wh
Alborosie
For the answer to the question above, this is a right triangle problem using the tangent function. 
<span>Tan(x) = Opposite (O) / Adjacent (A) </span>
<span>x = 40 degrees </span>
<span>A = 30 ft </span>
<span>Solve for O </span>
<span>O= Tan (x) * A </span>
<span>O = Tan (40) * 30 </span>
<span>Use your calculator or whatever method to get the tangent of 40 degrees (which is .84) </span>
<span>O = .84 * 30 </span>
<span>O = 25.2 Ft</span>
5 0
4 years ago
Read 2 more answers
Write an equation for each problem. The square of a number is 8 more than twice the number.
avanturin [10]

Answer:

The equation is equal to

x^{2}=2x+8

Step-by-step explanation:

Let

x -----> the number

we know that

The equation that represented the problem is equal to

x^{2}=2x+8

x^{2}-2x-8=0

Solve the quadratic equation by graphing

The solution are x=-2 and x=4

see the attached figure

therefore

The number can be -2 or 4

3 0
4 years ago
Given: g(a)=4a+1 and h(a)=a2-2a<br> find: g(h(-3+z))
slavikrds [6]

Answer:

the answer should be 1

Step-by-step explanation:

4[(-3+z)2-2(-3+z)]+1

4(-6+2z+6-2z)+1

-24+8z+24-8z+1

the 24's and 8's cancel out leaving 1

3 0
3 years ago
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