Step-by-step explanation:
Area of triangle = 1/2 × the width × the length
42 = 1/2(x+3)(2x+8)
42 = 1/2×2×(x+3)(x+4)
42 = (x+3)(x+4)
(x+3)(x+4) = 42
x² + 7x + 12 = 42
x² + 7x + 12 - 42 = 0
x² + 7x - 30 = 0
(x-3)(x+10) = 0
x = 3, -10
x can't be -10 because the width and the length should be only + values
x = 3
Answer:
Step-by-step explanation:
The given expression s are:
and
To find:
is how many times as large as .
Solution:
Let is times as large as .
So, we can say that:
=
OR
Let us have a look at the formula for exponents:
Here we have:
Solving the expression using above formula:
So, Let is times as large as
4 slices of pizza sense half of eight is 4 and it's two people.
9514 1404 393
Answer:
20
Step-by-step explanation:
This triangle is your basic 3-4-5 triangle multiplied by 5 to become a 15-20-25 triangle. The missing leg is 20.
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More at brainly.com/question/23176381
<h3>
Answer: 2n - 2</h3>
===================================================
Explanation:
The terms cancel out because
The n terms combine to
5n + (-3n) = 5n - 3n = 2n
Lastly, the constants combine to
-6 + 4 = -2
Overall we have 2n - 2 as the simplified result.