Answer:
Both x = -1 and x = -7 are true solutions.
Step-by-step explanation:
Given
Required
Solve
Take square of both sides
Open bracket
Express as:
Expand
Factorize
Factor out x + 7
Solve:
So:
Step-by-step explanation:
I=prt
I=7400×(26.5/100)×1
I=$1961
total money 7400+1962= $9361
We would need to use 4 pipes to be sure to empty the chamber within 10 hours time.
Work:
5*5/3*4/10=3 1/3 pipes (but we must round since we cant have 1/3 of a pipe running. This means that we must have 4 pipes.
Answer:
The answer to your question is x = 3
Step-by-step explanation:
Data
m∠2 = 10x + 10
exterior angle = 110°
x = ?
Process
1.- Find the measure of the angle supplementary to the angle 110°. It will be angle y.
180° = 110° + y
- Solve for y
y = 180 - 110
y = 70
2.- From the picture we conclude that the triangle is Isosceles because two of its sides measure the same.
In an Isosceles triangle two of its angles measure the same so,
180° = 70° + 70° + ∠2
- Solve for ∠2
∠2 = 180 - 70 - 70
∠2 = 40
3.- Find x
10x + 10 = 40
Solve for x
10x = 40 - 10
10x = 30
x = 30/10
x = 3
Answer:
x=5
Step-by-step explanation:
(x - 5)(x - 5) = 0
x-5=0
x=5
