Answer:
75 coloured pencils
Step-by-step explanation:
Let's say Jordon has x total pencils.
We know that 20% of these x pencils is 15, so we have:
20% * x = 15
Remember that % is just "out of 100", so 20% = 20/100 = 0.20. Then:
0.20x = 15
x = 15 / 0.20 = 75
Jordon has 75 coloured pencils.
The margin of error for the interval (200 miles, 250 miles) is 25 miles.
<h3>What is an
equation?</h3>
An equation is an expression that shows the relationship between two or more variables and number.
The confidence interval = mean (m) ± margin of error (e) = m ± e
Hence:
m + e = 250 (1)
m - e = 200 (2)
From the both equations:
m = 225, e = 25
The margin of error for the interval (200 miles, 250 miles) is 25 miles.
Find out more on equation at: brainly.com/question/2972832
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Multiply both sides by 2(x-3)
<span>6=2x−3<span>x2</span>+9x,3<span>x2</span>−11x+6=0
</span>
3x^2-9x-2x+6=0
3x(x-3)-2(x-3)=0
(x-3)(3x-2)=0
<span>x−3=0 or x=3 is an extraneous root.</span><span>
or 3x-2=0
calculate x.</span>
9 + 10=21 :)
9=3 x3
10= 2 x 5
3x5=15
3x2=6
15 + 6 = 21 :)