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telo118 [61]
3 years ago
13

Malia found the margin of error for the percent of lengths of 100 willow leaves greater than 5 cm. If she increases her sample t

o 400, how will this affect her margin of error?
Group of answer choices

A. It will not change the margin of error.

B. It will double the margin of error.

C. It will reduce the margin of error by one-half.

D. It will reduce the margin of error by one-fourth.
Mathematics
1 answer:
marissa [1.9K]3 years ago
8 0
I believe option B will be correct
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If a straight line y = mx + c passes through the intersecting point of 3x - y = 8 and x+ 2y = 5 which is perpendicular to the li
Sindrei [870]

Answer:

Point of intersection:

3x - y = 8 -  -  - (a) \\ x + 2y = 5 -  -  - (b)

2 × equation(b) + equation (a):

7x = 21 \\ x = 3 \\  \\ y = 3x - 8 \\ y = 1

Point of intersection = (3, 1)

Perpendicular line:

3x + 6y - 11 = 0 \\ 6y =  - 3x + 11 \\ y =  -  \frac{1}{2} x +  \frac{11}{6}

General equation of line:

y = mx + c \\ 1 = (2 \times 3) + c \\ c =  - 5

<u>Value</u><u> </u><u>of</u><u> </u><u>m</u><u>:</u>

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8 0
3 years ago
6|2x+3|=36 need a mini step by step
ELEN [110]

Answer:

x=1.5

Step-by-step explanation:

We are trying to get x  by itself to see what it equals.

6(2x+3)=36

So first you want to distribute you proprieties.  You do that by multiplying 6 and 2x.  Then multiplying 6 and 3.

12x+18=36

Now in equations where you need to find the variable, whatever you  do on one side of the equal sign, you have to do on the other side.  So now we want to subtract 18 from both sides.

12x+18=36

     -18  -18

Then we divide 12 from both sides.

12x=18

÷12   ÷12

Now you have your answer!

x=1.5

6 0
3 years ago
Washington Elementary has 232 students Washington High has six times as many students how many students does Washington High hav
zaharov [31]
232x6=1392
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It’s just basic multiplication
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3 years ago
How would i number the graph
tiny-mole [99]
Put numbers up and down the X and Y axis showing what the graph values are. (Ex: see picture ) make sure you do it accurately based on what the slope will look like.

8 0
4 years ago
A town uses positive numbers to track increases in population and negative numbers to track decreases in population. The populat
geniusboy [140]

Answer:

-60 people

Step-by-step explanation:

The change in population was -300 people.

The change in population was -300 people/5 yr or -60 people/yr.

5 0
3 years ago
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