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tankabanditka [31]

2 years ago

7

In a survey of college students, 840 said that they have cheated on an exam and 1795 said that they have not. If one college stu

dent is selected at random, find the probability that the student has cheated on an exam.

1 answer:

Sophie [7]2 years ago

7 0

DO NOT CLICK THAT ANSWER TRUST ME YOU WILL REGRET IT IT IS A VIRUS AND WILL DESTROY YOUR COMPUTER

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The positive solution to the equation x^2- 4 = 6

VARVARA [1.3K]

Answer:

In the form of $a+\sqrt{b}$ ,

a = 3
b = 13

Explanation:

The equation can be rewritten as:

$x^{2} -6x-4=0$

Find the solutions using the quadratic formula:

a = 1
b = -6
c = -4

$x=\frac{-b+-\sqrt{b^{2}-4ac} }{2a} \\\\=\frac{-(-6)+-\sqrt{(-6)^{2} -4(1)(-4)} }{2(1)} \\\\=\frac{6+-\sqrt{36+16} }{2} \\\\=\frac{6+-\sqrt{52} }{2} \\\\=\frac{2(3)+-2\sqrt{13} }{2} \\\\=\left \{ {{x_{1}=3+\sqrt{13} } \atop {x_{2}=3-\sqrt{13} }} \right.$

Find the solution that's positive:

$\left \{ {{x_{1} = 3+\sqrt{13} = 6.605551275... } \atop {x_{2} = 3-\sqrt{13} = -0.605551275... }} \right$

Therefore, the solution would be $3+\sqrt{13}$ .

In the form of $a+\sqrt{b}$ ,

a = 3
b = 13

7 0

2 years ago

Describe the steps used to graph the equation 4x-2y=8 with an x- and y- intercepts.

hram777 [196]

Answer:

x=1/2y+2

y=2x-4

Explanation:

For x-intercept:

4x-2y=8

-> subtract -2y on both sides

4x=2y+8

-> divide 4 on both sides to isolate the x

x=1/2y+2

For y-intercept:

4x-2y=8

-> subtract 4x on both sides

-2y=-4x+8

-> divide -2 on both sides to isolate the y

y=2x-4

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3 years ago

What do the descriptive details in this passage convey? Select three options. sensory information related to sound sensory infor

Rudiy27

Answer:

a,c,e

Explanation:

just answered on edge

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3 years ago

Give 2 examples of the sedimentation in the deep ocean?

MrMuchimi

Pelagic Sediment
Hydrogenous Sediment

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Bob bought school supplies for school. A mechanical pencil for $2.53, a 5 subject notebook for $6.10, glue for $.50 and a pencil

loris [4]

He should get back $9.42

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3 years ago