Answer:
the answer is c
Step-by-step explanation:
edge 2020
1. 6 units squared
2. 1 unit cubed
Step-by-step explanation:
In a cube, all the sides of all the squares have the same length.
Therefore, to find the surface area of the cube we will find the area of one square and multiply this with the number of squares in the cube (which is 6 sides)
(1*1) * 6 = 6
= 6 units squared
The formula for volume is Length * Width * Height
1 * 1 * 1 = 1
= 1 unit cubed
Learn More:
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Answer:
dude this was last year stuff
Step-by-step explanation:
She invested "a" at 4% and "b" at 7%
now, how much is 4% of a? well 4/100 * a or 0.04a
how much is 7% of b? well 7/100 * b, or 0.07b
now, we know their interest yield was 480, thus
0.04a + 0.07b = 480
we also know, she had 8000 to invest and split it in two investments, so
a + b = 8000
now
![\bf \begin{cases} a+b=8000\implies \boxed{b}=8000-a\\ 0.04a+0.07b=480\\ ----------\\ 0.04a+0.07\left( \boxed{8000-a} \right)=480 \end{cases}](https://tex.z-dn.net/?f=%5Cbf%20%5Cbegin%7Bcases%7D%0Aa%2Bb%3D8000%5Cimplies%20%5Cboxed%7Bb%7D%3D8000-a%5C%5C%0A0.04a%2B0.07b%3D480%5C%5C%0A----------%5C%5C%0A0.04a%2B0.07%5Cleft%28%20%5Cboxed%7B8000-a%7D%20%5Cright%29%3D480%0A%5Cend%7Bcases%7D)
solve for "a" to see how much she invested at 4%
what about "b"? well b = 8000 - a
Answer:
y = 13.8
Step-by-step explanation:
Plug in 7.2 for x in the first equation.
y = 1.5x + 3
y = (1.5)(7.2) + 3
Simplify. First, multiply, then add (following PEMDAS).
y = (1.5)(7.2) + 3
y = (10.8) + 3
y = 13.8
13.8 is your answer for y.
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