Answer:
It depends on the type of numbers that are acceptable. If you state your problem in words
x - y =8
x + y = 1
The answers are x = 4.5
y = -3.5
The answer is 1.25 hours.
STEP 1.
Each page has about 350 words: 1 page - 350 words
15 pages is x words: 15 pages - x words
1 : 350 = 15 : x
x = 15 * 350 : 1 = 5250
So, she has to type at least 5250 words.
STEP 2:
<span>Stephanie can type around 70 words per minute: 70 words - 1 minute
x words in 1 hour = 60 minute: x words - 60 minute
70 : 1 = x : 60
x = 70 * 60 : 1 = 4200
So, she types around 4200 words per hour.
STEP 3:
Now we have:
</span>- she has to type at least 5250 words
- she types around 4200 words per hour
5250 : x = 4200 : 1
x = 5250 * 1 : 4200 = 1.25 hours
Formula for the circumference of a circle:
C = 2πr (C = circumference π(pi) = 3.14..... r = radius)
You know:
r = 9 cm
π = 3.14 So substitute/plug it into the equation
C = 2πr
C = 2(3.14)(9)
C = 56.52 cm
Use this theorem: in a circle, the measure of an angle formed by two chords that intersect inside the circle is half the sum of the arcs formed by the chords.
In this case the sum of the arcs formed by the chords is 67° + 74° = 141 °, then the half is 141° / 2 = 70.5°.
Answer: 70.5°
Answer:
Step-by-step explanation:
hello :
the system is : x+ y =4 ...(*)
2x - y = -1...(**)
add(*) and (**) : 3x=3 so : x=1
put this value into (*) : 1+y=4 so : y=3
one solution : (1 , 3)
