Answer: (x+8)(x+2) = x^2 + 10x + 16
A is not congruent
B is not congruent
C is congruent
D is not congruent
E is congruent
Is congruent
Answer: x ≥ 1307
Explanation:
First, write the formula:
monthly fee: $14
minute rate: 7¢ or $0.07
total charge: $105.49
.07x + 14 ≥ 105.49 (the sign is this way because they said this price was the least she had been charged for a month.
You can solve for x just like you would in an equation by making the ≥ sign an equal sign
.07x + 14 = 105.49
- 14 -14
.07x = 91.49
÷ .07 ÷ .07
x = 1307 minutes
since you didn't divide by a negative number, the inequality sign stays the same:
x ≥ 1307
Because the time right at launch equals 0 (0 seconds have passed since the launch) solve the equation for 0.
-5(0 + 1)(0 - 9)
-5(1)(-9)
-5(-9)
45
The object was 45 metres above the ground at the time of the launch.
Take notes during class, and just find your own unique way of studying. If you like to sing, or write, then make a poem, rap, or song about the material you need to study. That's just something.
Hope I helped!
