Answer:
12 m
Step-by-step explanation:
This can be solved using the Pythagorean theorem
a^2 = b^2 + c^2
20^2= 16^2 + c^2
400= 256 + c^2
400-256= c^2
144 = c^2
c = √144
c= 12
3x - 17 = 9x + 7
Rearrange on same sides
-17 - 7 = 9x - 3x
-24 = 6x
Divide by 6 on either sides to isolate 6
6 and 6 cancels out
-4 = x
Answer is:
B. x = -4
Answer:
Infinite many solutions. Any x-value can satisfy the equation.
Step-by-step explanation:
Let's work on simplifying the equation a little to investigate which x-values satisfy it. Start by combining like terms on the left side (6x +4x=10x),
then distribute the factor "10" into the binomial (x+10), obtaining 10x +30.
Now we have the same expression on the left and the right of the equal sign:
10x +30=10x+30. We may subtract 30 from both sides, and obtain 10x=10x, and at this point divide by 10 both sides, and we obtain: x=x
The process is shown below.
x=x is an equation that is verified by absolutely ANY x value on the number line, and there are infinite x-values in the number line.
Therefore there are infinite many solutions to this equation (any x-value will satisfy it).
The correct form of expression after solving the errors is :
-5.83b + 24
Given Margie's work for adding linear expressions are:
the expression is (−1.56b + 10) − (4.27b − 14)
step 1: −1.56b + 10 + (−4.27b) + 14
In the first step of margie, she did not used the proper method of opening the brackets.
The negative sign is used to multiply the terms inside the brackets.
so the correct step is:
step 1: -1.56b + 10 - 4.27b + 14
in the next step arrange the variables and constants.
step 2 : -1.56b - 4.27b +10 + 14
next add the variables and the constants:
step 3: (-1.56b - 4.27b) +(10 + 14)
step 4: -5.83b + 24
Hence we get the required results.
Learn more about Solving expressions here:
brainly.com/question/723406
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From the given problem above, the correct answer would be the last option since it stated that a number which is X is increased by five or added by five and then the sum is then squared. Therefore, it is option D. (X+5)^2.