Ask question

Ask question

All categories

s344n2d4d5 [400]

2 years ago

9

A school has all of the students in grade 8 take a math test. Several samples are taken from the results. Which of the following

samples is NOT likely to produce a representative sample of the population?

1 answer:

gayaneshka [121]2 years ago

4 0

917.8
step by step
sisbeuejebusnanakaiajrbrv

You might be interested in

Can anyone help? <br><br>Give the answer in four significant figures.

Llana [10]

X + 0.5y = 3
x^2 - y = 15

from the first equation:-
0.5y = 3 - x
y = 6 - 2x

Substitute for y in second equation:-
x^2 - (6 - 2x) = 15
x^2 + 2x - 21 = 0
x = [-2 +/- sqrt((4 - 4*-21)] / 2
= 3.6904 , -5.6904

Plugging in these into first equation we get

3.6904 + 0.5y = 3 so y = 2(3-3.6904) = -1.3808
-5.6904 + 0.5y = 3 so y = 2(3 + 5.6904) = 17.3808

Solution is x = 3.690, y = -1.381 ; x = -5.690, y = 17.38 ( to 4 s.f's)

5 0

3 years ago

if (3, 2) (2, -3) represents a counterclockwise rotation of the point on a coordinate plane, how many degrees is the rotation?

Luden [163]

Answer:

90 degrees.

Step-by-step explanation:

Rotate it on Geogebra.

8 0

2 years ago

The population was decreased by 300 residents over the past 5 years.The same number of residents left each year what was the cha

Sonja [21]

Answer:

the answer is 60 per year

Step-by-step explanation:

300/5=60

3 0

3 years ago

Identify all of the root(s) of g(x) = (x2 + 3x - 4)(x2 - 4x + 29)

vichka [17]

Answer:

x=-4,1,2+5i,2-5i

Step-by-step explanation:

Given is an algebraic expression g(x) as product of two functions.

Hence solutions will be the combined solutions of two quadratic products

$g(x) = (x^2 + 3x - 4)(x^2 - 4x + 29)\\$

I expression can be factorised as

$(x+4)(x-1)$

Hence one set of solutions are

x=-4,1

Next quadratic we cannot factorize

and hence use formulae

$x=\frac{4+/-\sqrt{16-116} }{2} =2+5i, 2-5i$

5 0

3 years ago

How many millilmeters are in 3 gallons

Anuta_ua [19.1K]

Answer:

11,356 ml.....................

7 0

3 years ago

Read 2 more answers