First, we know the formula for area is:
Area = Length* Width
Therefore, 128 = (3x+7)(x+5)
We can use the F.O.I.L method to multiply
- First: (3x *x )= 3x²
-Outer: (3x*5) = 15x
-Inner: (7*x) = 7x
-Last: (7*5) = 35
Now we add the sum → 3x² + 15x + 7x + 35 → 3x² + 22x + 35
3x²+ 22x + 35 = 128
3x²+ 22x -93 = 0
Now you have to factor to solve for the x value.
<span>(<span><span>3x</span>+31</span>)</span><span>(<span>x−3</span><span>)
</span></span>x = 3 & x = -31/3
The negative value is eliminated because u can't have a negative length.
The length is 3x+7
L= 3(3) +7
L= 9+7
L= 16
Add total rolls:
The number of rolls is the height of each bar:
14 + 12 + 16 + 15 + 13 = 70
70 total rolls
The numbers greater than 3 are 4 and 5
4 was rolled 15 times and 5 was rolled 13 times
15 + 14 =28 Total times
The prInability of that happening would be 28/70 which reduces to 2/5
The answer as a fraction is 2/5 which is 40% as a percentage.
Answer:
D look up the question on quizlet to get all of your answers to your lesson :)
Step-by-step explanation:
The sample proportion of returns with errors at the two tax offices will be 0.1389 and 0.0927 respectively.
<h3>How to calculate the sample proportion?</h3>
From the information, the the observed frequencies showing the number of sampled returns with errors and the number of sampled returns were given.
The sample proportion will be:
P1 = 35/(35 + 217)
= 35/252
= 0.1389
P2 = 28/(28 + 274)
= 28/302
= 0.0927
Learn more about sample proportion on:
brainly.com/question/24232216
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Answer:
36/45 people picked chocolate cake, so 36/45 as a percent is 80%
Step-by-step explanation:
