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stiks02 [169]
3 years ago
13

On a math test 12 students earned an a this number is exactly 25% of the total number of students in the class how many students

are in the class
Mathematics
1 answer:
statuscvo [17]3 years ago
7 0

Answer:

48 students.

Step-by-step explanation:

25% of total students = 12

suppose,

total students= x

so,

25% of x=12

(25/100)*x=12

25*x=(12*100)

x=1200/25

x=48

therefore,

x= total students= 48.

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What is the length of the hypotenuse of the triangle? Write your answer as an exact answer.
klemol [59]

Answer:

AB = \sqrt{65} units

Step-by-step explanation:

Using Pythagoras' identity in the right triangle.

The square on the hypotenuse is equal to the sum of the squares on the other 2 sides, that is

AB² = AC² + BC²

       = 7² + 4²

       = 49 + 16

       = 65 ( take the square root of both sides )

AB = \sqrt{65}

4 0
3 years ago
Read 2 more answers
Consider the parametric curve x = 2t^(3)-3t^(2)+2 and y = t^(3)-12t,-pi leq t leq pi . (a) Find the values of t (if any) where t
bagirrra123 [75]

Answer:

  (a) t = ±2

  (b) t ∈ {0, 1}

  (c) In navigation terms: east by north. The slope is about 0.42 at that point.

Step-by-step explanation:

(a) dy/dx = 0 when dy/dt = 0

  dy/dt = 3t^2 -12 = 0 = 3(t -2)(t +2)

The slope is zero at t = ±2.

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(b) dy/dx = (dy/dt)/(dx/dt) = <em>undefined</em> when dx/dt = 0

  dx/dt = 6t^2 -6t = 6(t)(t -1) = 0

The slope is undefined for t ∈ {0, 1}.

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(c) At t=3, dy/dx = (dy/dt)/(dx/dt) = 3(3-2)(3+2)/(6(3)(3-1)) = 15/36 = 5/12

The general direction of movement is away from the origin along a line with a slope of 5/12, about 22.6° CCW from the +x direction.

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The first attachment shows the derivative and its zeros and asymptotes. It also shows some of the detail of the parametric curve near the origin.

The second attachment shows the parametric curve over the domain for which it is defined, along with the point where t=3.

5 0
3 years ago
Ray is purchasing a laptop that is on sale for 25% off. He knows the function that represents the sale price of his laptop is c(
Lelu [443]
F[c(p)]=  f ( 0.75p ) = 1.08*0.75p = .81p
3 0
4 years ago
Given the binomials (x − 3), (x − 1), (x + 2), and (x + 3), which one is a factor of f(x) = 2x3 + 3x2 − 2x − 3?
Gelneren [198K]

Answer:

nswer:

(x-1) is factor of our function.

Step-by-step explanation:

We are given a function  and we are asked to find the correct factor from the given options.

Let us factor out our polynomial.

Therefore, (x-1) is correct choice for factor of our polynomial.

Step-by-step explanation:

6 0
3 years ago
PLEASE SHOW FULL SOLUTIONS !!!!! WILL MARK BRAINLIEST FOR THE BEST ANSWER. THANK YOU AND GOD BLESS.
zhenek [66]

Answer:

a = 8

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Step-by-step explanation:

y = 4x - 7

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4 0
3 years ago
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