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Anna [14]
3 years ago
12

A good way to avoid bias when collecting samples is to ___.

Mathematics
1 answer:
Dafna1 [17]3 years ago
6 0

Probably the most effective method researchers use to prevent sampling bias is through simple random sampling where samples are selected strictly by chance.

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Easy question
Anarel [89]

Answer:

d)33

e)80

Step-by-step explanation:

I'm sorry I don't really know how to explain this.

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3 years ago
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A​ doctor's prescription calls for a daily intake containing 50 mg of vitamin C and 10 mg of vitamin D. Your pharmacy stocks two
blagie [28]
Setup
0.8x + 0.4y = 50
0.1x + 0.2y = 10 - Multiply by -2 and add

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0.6x = 30
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5 + .2y = 10
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8 0
3 years ago
Which graph is the solution to this system y-4x=-1y+x=4
natali 33 [55]

First, let's find the x and y intercepts

In the first equation

y - 4x = -1

Put x =0

y= - 1

(0, -1)

Put y=0 and the n solve for x

0 - 4x = -1

-4x = -1

x=0.25

(0.25 , 0)

The points for the first equation is (0, -1 ) and (0.25, 0)

Next is to find the intercts for the second equation

y + x = 4

put x=0

y = 4

(0, 4)

Put y =0

0 + x = 4

x = 4

( 4, 0)

The points for the second equation are;

(0, 4) and (4, 0)

Below is the graph

4 0
1 year ago
Can sum1 help me pls.i have no idea what this is :\
insens350 [35]

Answer:

It is the 2nd choice!

Step-by-step explanation:

6 0
2 years ago
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Please get this done quick
stich3 [128]

Answer:

its A: (-1,-1/2)

Step-by-step explanation:

Find the holes in the graph by factoring and cancelling.

6 0
3 years ago
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