Answer: 22.55 mph
Step-by-step explanation:
Let the speed of the train be n
4 × 62 = 248 which is the distance travelled by the car in 4 hours and the train travelled in 11 hours
11 × n = 248
11n = 248
n = 248/11
n = 22.55mph
Answer: 42
Step-by-step explanation:
If they are in parentheses, you are going to multiply them, and when you multiply two negatives, you make a positive. which gives you 42.
What angles are you looking at?,
well one one angle is cos⁻¹∅=8/10 = cos⁻₁=0.8= 36.9
and the other angle is sin⁻¹∅=53.1
Answer:
By factoring
Step-by-step explanation:
4x^2+25=20x then:
4x^2-20x+25=0
factoring:
(2x-5)(2x-5)=0
2x=5, x=2.5