These intervals are measured by the x-values. Additionally, intervals of increase and decrease are always express with parentheses in interval notation. Therefore, the decreasing interval is (-2, 0)U(1, 3) and the increasing interval is (0, 1).
Hope this helps!
Answer:
C.
Step-by-step explanation:
Let's solve your equation step-by-step.
25x2=16
Step 1: Divide both sides by 25.
25x2
25
=
16
25
x2=
16
25
Step 2: Take square root.
x=±√
16
25
x=0.8,−0.8
Answer:
8 pounds
Step-by-step explanation:
Shipping Company A = 14 + 2.25p
Shipping Company B = 20 + 1.50p
Where,
p = the number of pounds.
For what weight is the charge the same for the two companies
Equate the charges of the two companies
14 + 2.25p = 20 + 1.50p
14 - 20 = 1.50p - 2.25p
-6 = -0.75p
Divide both sides by -0.75
p = -6 / -0.75
= 8
p = 8 pounds
Answer:
$31.50
Step-by-step explanation:
$4.40 x 6 =$26.40
$26.40 + $5.10 = $31.50
(3 +
) × (3 -
)
Take the special case
(a - b)×(a + b)=a² - b²
a = 3
b =
3² - (
)² {(√)² = the number itself}
9 - 5
4
