Think of the letter 'a' to represent 1 apple.
a = 1a = 1 apple
2a = 2 apples
3a = 3 apples
and so on
Adding 7a with 4a means we have 7 apples and we add on 4 more. We'll have 7+4 = 11 apples total.
Algebraically we write 7a+4a = 11a to do this using shorthand.
The 9-7 portion is calculated like you'd expect and it simplifies to 2.
------------
Here's what the step by step picture looks like
(7a+9) + (4a-7)
7a + 9 + 4a - 7
(7a+4a) + (9-7)
11a + 2
its the answer you have selected AGAIN lol
Answer:
The answer is
<h2>
![y = 2x](https://tex.z-dn.net/?f=y%20%3D%202x)
</h2>
Step-by-step explanation:
To find an equation of a line given the slope and a point we use the formula
![y - y_1 = m(x - x_1)](https://tex.z-dn.net/?f=y%20-%20%20y_1%20%3D%20m%28x%20-%20%20x_1%29)
where
m is the slope
( x1 , y1) is the point
From the question the point is (-1 , 2) and the slope is - 2
The equation of the line is
<h3>
![y - 2 = - 2(x + 1) \\ y - 2 = - 2x - 2 \\ y = - 2x - 2 + 2](https://tex.z-dn.net/?f=y%20-%202%20%3D%20%20-%202%28x%20%2B%201%29%20%5C%5C%20y%20-%202%20%3D%20%20-%202x%20-%202%20%5C%5C%20y%20%3D%20%20-%202x%20-%202%20%2B%202)
</h3>
We have the final answer as
<h3>
![y = 2x](https://tex.z-dn.net/?f=y%20%3D%202x)
</h3>
Hope this helps you
Answer:
She has 11 dimes and 17 nickels
Step-by-step explanation:
dimes --- d
nickels -- n
Equation with number of coins: ![ n+d = 28 n = 28-d](https://tex.z-dn.net/?f=%0An%2Bd%20%3D%2028%0An%20%3D%2028-d)
![10d + 5n = 195 ](https://tex.z-dn.net/?f=10d%20%2B%205n%20%3D%20195%0A)
Divide by 5
![2d + n = 39](https://tex.z-dn.net/?f=2d%20%2B%20n%20%3D%2039)
sub in the other equation:
![2d + 28-d = 39 d = 11 n = 28-11 = 17 ](https://tex.z-dn.net/?f=2d%20%2B%2028-d%20%3D%2039%0Ad%20%3D%2011%0An%20%3D%2028-11%20%3D%2017%0A)
She has 11 dimes and 17 nickels
check:
total = 11 + 17 = 28 , check!
value: 10(11) = 5(17) = 195 , check!
Answer:
5
Step-by-step explanation:
so 1/5 of 10 is 5 and 1/5 5 would be 1
area is LxW
so 5x1=5