Answer: Justin should have multiplied 3.8 and 7.9 first.
Step-by-step explanation:
The equation that was given with regards to the question is 12.5 + 7.9x and we are told that the value of x = 3.8
The error made by Justin was that he didn't multiply 3.8 and 7.9 at first. Solving the equation will be:
= 12.5 + 7.9x = 12.5 + 7.9(3.8)
= 12.5 + 30.02
= 42.52
A shop contains 3 red shelves, 4 yellow shelves, 6 green shelves, 5 red chairs, 8 yellow chairs, and 7 green chairs.
Answer:
26+13i
Step-by-step explanation:
(4+7i)(3−2i)
Multiply complex numbers 4+7i and 3−2i like you multiply binomials.
4×3+4×(−2i)+7i×3+7(−2)i^2
By definition, i^2 is −1.
4×3+4×(−2i)+7i×3+7(−2)(−1)
Do the multiplications.
12−8i+21i+14
Combine the real and imaginary parts.
12+14+(−8+21)i
Do the additions.
26+13i
Real part steps:
(4+7i)(3−2i)
Multiply complex numbers 4+7i and 3−2i like you multiply binomials.
Re(4×3+4×(−2i)+7i×3+7(−2)i^2)By definition, i^2 is −1.
Re(4×3+4×(−2i)+7i×3+7(−2)(−1))
Do the multiplications in 4×3+4×(−2i)+7i×3+7(−2)(−1).
Re(12−8i+21i+14)
Combine the real and imaginary parts in 12−8i+21i+14.
Re(12+14+(−8+21)i)
Do the additions in 12+14+(−8+21)i.
Re(26+13i)
The real part of 26+13i is 26.
26
lets draw a picture of our hexagon:
then, we can rotate 60 degrees counterclockwise (or clockwise) and get the same hexagon. So, the answer is 60 degrees
Answer:
42
Step-by-step explanation:
<h3>I hope it's helpful for you</h3>