Answer:
x=20
Step-by-step explanation:
(triangle angles must add up to 180º)
2x+10+2x+90=180
4x+100=180
4x=80
x=20
Answer:
240 to 60 or in simpler form 1 and 4
Step-by-step explanation:
Answer: If you were to graph the solution it would be evident. One solution is when the lines meet at one point, no solution is when the lines are parallel to each other (they do not touch) and infinitely solutions happens when the two lines are on top of each other.
Step-by-step explanation:
Firstly we need to count what is the difference between both altitudes:
44,000 - 9,000 = 35,000
If a plane descends at a rate of 2,500 feet per minute, then we have to count how many 2,500s fit in 35,000:
35,000 / 2,500 = 14
It means that the jet will reach its cruising altitude in 14 minutes.
Split the second term in 5x^2 + 12 - 32 into two terms
5x^2 + 20x - 8x - 32
Factor out common terms in the first two terms, then in the last two terms
5x(x + 4) - 8(x + 4)
Factor out the common term: x + 4
<u>(x + 4)(5x - 8) </u>
