Answer:
A)
Step-by-step explanation:
Here is an Example:73 rounded to the nearest ten is 70, because 73 is closer to 70 than to 80. But 76 goes up to 80.
Answer:
x<-1
Step-by-step explanation:
12x>7(4x+5)-19
<u><em>Solve the right side</em></u>
12x > 28x+35-19
12x > 28x+16
<u><em>Make x the subject</em></u>
12x-28x > 16
-16x > 16
-x > 16/16
-x > 1
Multiplying by -1 on both sides
x < -1
If you multiply ">" with minus sign, its direction changes. It is similar to switching the positions of x and -1.
<u><em>Simplify</em></u>
x < -1
The inequality of x is x<-1
Answer:
- B. the absolute value of 5 minus 3 x equals negative 8
Step-by-step explanation:
The absolute value is never negative as per definition.
- A. |2x - 1| = 0, has solution
- B. |5 - 3x| = - 8, no solution
- C. |-x - 3| = 5, has solution
- D. |-x + 9| = 0, has solution
Correct choice is B
Answer: a and d
Step-by-step explanation:
(to find all points of discontinuity, set denominator equal to zero and solve)

(to factor, find two numbers when added together equal -7 and when multiplied together equal 10)
-2 + -5 = -7
-2(-5) = 10
-2 and -5 are the two numbers
