X³ + 3x² = 25x + 75
x³ + 3x² - 25x - 75 = 0

x²(x + 3) - 25(x + 3) = 0
(x² - 25) * (x + 3) = 0

(x² - 25) = 0 (x + 3) = 0
x² = 25 x = -3
x = ±5

Hope this helps! :)

6 0

3 years ago

Read 2 more answers

Kristina walks 7 1/2 miles in 5 hours. At this rate, how many miles can Kristina walk in 9 hours

puteri [66]

Answer:

13.5

Step-by-step explanation:

7 1/2=7.5

7.5/5*9=13.5

4 0

3 years ago

Kathy is baking cakes each cake requires 1/12 of a teaspoon of vanilla and she has 9/12 of a teaspoon how many cakes can she bak

masya89 [10]

Kathy can make 9 cakes

8 0

3 years ago

Read 2 more answers

The drawing of a building, shown below, has a scale of 1 inch to 30 feet.

Gnoma [55]

Answer:

37.5 feet.

Step-by-step explanation:

1.25/actual height = 1/30

1.25*30 = 37.5 ft

(╹ڡ╹ )

6 0

2 years ago