John who is 20 years old is 8 years older than 2 times the age of Carlos. How old is Carlos
Answers
Carlos is 6
let x be Carlo's age then
2x + 8 = 20 → (solve for x)
subtract 8 from both sides
2x = 20 - 8 = 12
divide both sides by 2
x = = 6
Carlos is 6 years old
c = Carlos
j = John
--------------------
2c + 8 = j
2c + 8 = 20
2c = 20 - 8
2c = 12
c = 12 : 2
c = 6
-------------------------
6*2+8=20
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2 pairs of goggles and 3 swimming caps cost $60.30.3 pairs of goggles and 5 swimming caps cost $95.20.Find the cost of a swimming cap.
Answers
Which sign is the less sign and which one is the greater sign (can someone please tell me I really need help! and I never understand the signs!) is this greater or less < Is this less or greater > I need help now please!
Answers
example: 6<9 is 6 is less than 9 (the > or < is the crocodile's mouth so it wants to eat a greater number!)
So your answer > is the greater sign!
Answers
4 miles per hour means 4 mieles in one hour
6 hours
distance=time times (distance pers unit of time)
distance=6 times 4=24
second day
same number of hours=6
speed=3
distance=time times (distance per units of time)
distance=6 times 3=18
so we add 1 and 2 days together
24+18=42
so he has covered 42 mles
he eed to cover 70
70=42+rest
subtract 42
28=rest
so he traveled 28 miles on third day
in 8 hours
sppeed=distance divided by time
time=8
distance=28
28/8=14/4=7/2=3 and 1/2 miles per hour=3.5 miles per hour
answer is 3.5 miles per hour
Answers
Answer:
2.rational 3.integer 4.whole number
Step-by-step explanation:
The number 7 is all three of these.
Answers
The product of the slopes of perpendicular lines equals -1
Solution:
Need to determine product of slope of perpendicular lines.
Product of slopes of perpendicular lines is always equal to -1.
lets verify this.
let consider following two equation of perpendicular lines
2x – y = 1
x + 2y = 2
Now evaluate slope of each line by representing them in slop intercept form that is y = mx + c
Where coefficient of x represents slope m.
Representing first line in slope intercept form we get
y = 2x – 1
On comparing above equation with slope intercept form we can say that its slope is 2.
Similarly representing x + 2y = 2 equation in slope intercept form we get
On comparing above equation with slope intercept form we can say that its slope is
On multiplying slopes of two perpendicular lines we get,
Hence product of slope of perpendicular line is -1
If two non-vertical lines are perpendicular, then their slopes are opposite reciprocals giving you -1.
:) Hope this helps.
1/11^12
1/11^4
11^4
11^12
Answers
remember
x^-m=1/(x^m) and
(x^m)/(x^n)=x^(m-n)
so
(11^4)/(11^8)=11^(4-8)=11^-4=1/(11^4)
2nd option