7(3-x)+1 .. first you're going to distribute
21-7x+1 .. then combine like terms
22-7x .. subtract 22 from both sides to get the variable X alone.
-7x=-22
x=3.14
Answer:
15x/2
Step-by-step explanation:
1) Using the information provided, form an expression.
2) To further clarify Step 1, a product is the result from multiplying two numbers.
3) To determine product you could either multiply, x * y or leave it as xy, which means the same thing. Most commonly we would leave it as xy
4) 15x represents the product of 15 and a number, since the number is not provided leave it as x.
5) Next divide this expression by two as stated.
Answer:
0.2071
Step-by-step explanation:
It looks like the graph is of the function ...
y = √(x +8) -2
We know that (-4, 0) is one point on the graph. The other point of interest is at x=0, where y = √8 -2 ≈ 0.8284.
The average rate of change on the interval is then ...
m = (0.8284 -0)/(0 -(-4)) = 0.2071
The average rate of change on the interval is about 0.2071.
_____
<em>Rougher estimate</em>
The graph goes through the points (-4, 0) and (1, 1), so has a slope of 1/5 = 0.2 on the interval [-4, 1]. We know the graph does not go through (0, 1), so the slope is not as high as 1/4 = 0.25. The curve is concave downward, so the average slope will be higher than 0.2, but we aren't sure how much higher.
A reasonable estimate of the rate of change on the interval is "a little more than 0.2, but less than 0.25."
The number is four. 4 is a common factor of both 16 and 20 and is below 9.
Answer:
19
Step-by-step explanation:
31 +9 =40
40 by 2 = 20
9-5=4
4 by 4= 1
20-1= 19