3 years ago

Which of these is an example of a non-random sample?

Mathematics

2 answers:

klemol [59]3 years ago

7 0

Answer:

B is the answer because its an example of a non randon sample

Black_prince [1.1K]3 years ago

3 0

Answer:

it is D :)

Step-by-step explanation:

trust me ;)

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A mountain has a 20 degree slope, and is 1 mile tall. How far do you need to hike to reach the summit?

netineya [11]

Answer:21

Step-by-step explanation:

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3 years ago

What are the solutions of the quadratic equation? 4x^2+34x+60=0

insens350 [35]

Answer:

Option 3) -6,-5/2

Step-by-step explanation:

we know that

The formula to solve a quadratic equation of the form

$ax^{2} +bx+c=0$

is equal to

$x=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$4x^{2} +34x+60=0$

$a=4\\b=34\\c=60$

substitute in the formula

$x=\frac{-34(+/-)\sqrt{34^{2}-4(4)(60)}} {2(4)}$

$x=\frac{-34(+/-)\sqrt{196}} {8}$

$x=\frac{-34(+/-)14} {8}$

$x_1=\frac{-34(+)14} {8}=-\frac{20}{8}=-\frac{5}{2}$

$x_2=\frac{-34(-)14} {8}=-6$

6 0

3 years ago

a cone has a volume of 1230.88 units cubed and a diameter of 14 units what is the height of the cone use 3.14 for pi

ANEK [815]

Answer:

h= 24

Step-by-step explanation:

$v = \pi {r}^{2} \frac{h}{3}$

$r = \frac{d}{2}$

$r = \frac{14}{2}$

r= 7

1230.88=3.14×7^2×h/3

1230.88= 153.86h/3

h=1230.88/153.86

h= 24

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2 years ago

Someone please help!! I’ll give you Brainliest!

Valentin [98]

Answer:

x= 1

y= 2

(1,2)

x=2

y=3

(2,3)

x=3

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(3,4)

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3 years ago

Each leg of a 45°-45°-90° triangle measures<br> 14 cm. What is the length of the hypotenuse?

4vir4ik [10]

For a 45-45-90 angle the hypotenuse is s * square root of 2

so the hypotenuse is 14 * square root of 2 or 19.8

:)))

6 0

3 years ago

Read 2 more answers