Hello from MrBillDoesMath!
Answer: x = 1
Discussion
:
Per the author, the equation to solve is 12 = 5x + 7
Isolate the "x" variable by subtracting 7 from both sides of the equation:
12 = 5x + 7
-7 = -7
---------------------
12-7 = 5x + 0
or
5 = 5x
Dividing both sides by 5 gives x - 1
Regards, MrB
Answer:
3/4
Step-by-step explanation:
Total number of cases = 8 [1,2,4,2,5,3,1,2]
No. of number less than 4 = 6 [1,2,2,3,1,2]
Probability = 6/8 = 3/4
Answer:
6.86 to 2DP.
Step-by-step explanation:
7/12 = 4/DC
Cross multiply:
7DC = 4*12
DC = 48/7
= 6.857.
Answer:
(2x+4)^2 = 28
Step-by-step explanation:

to apply completing the square method we need x terms on one side
add 4x on both sides

Now we take the coefficient of x term and divide by 2
4 divide by 2 is 2
Now we square it (2)^2 = 4
In completing the square method, we add that number on both sides

Now we factor x^2 + 4x + 4
(x+2)(x+2) = 7
(x+2)^2 = 7
(x+2)(x+2) = 7
Multiply both sides by 4
2(x+2) * 2(x+2) = 7* 4
(2x+4)(2x+4) = 28
(2x+4)^2 = 28
Answer:
-60
Step-by-step explanation:
-3 · 2 = -6 and 10⁴ · 10⁻³ = 10⁽⁴⁺⁽⁻³⁾⁾ = 10¹ = 10 so the answer is -6 · 10 = -60.