30-[(9x2)-(3x4)] numerical expression ;)
Answers
30-[18-(3x4)]
30-(18-12)
30-6
24
The answer is:24
Related Questions
What property describes the number sentence 6+0=6
The product of 18 and p is 54
A triangle has sides with lengths of 6 centimeters, 8 centimeters, and 11 centimeters. Is it a right triangle?
55 is what percent of 100
Answers
First you do everything in the parentheses.
2 times x= 2x
2 times -3=-6
Now you have 5 + 2x- 6
5 plus -6=-1
Now you have 2x-1=0
Add the -1 to both sides.
2x-1+1=0+1
Now simplify that to get: 2x=1
Now you divide each side by 2 to get x by itself.
So, x= 1/2
You must use the distributive property to get an answer.
So, 2(x-3), correct? Okay, so first you multiply 2 times x, which would give you:
2x
Then you multiply 2 times 3, which gives you 6.
So now, you have 5+2x-6 - (Basically, we just extended the problem.)
Then we just simplify, which gives you... (drumroll please...?) 2x-1.
Hope this helps!
increasing by 3 inches every hour.
How long until the snowfall in both cities is equal?
A. 1 hour and 20 minutes
B. 1 hour and 33 minutes
C. 45 minutes
D. 1 hour 15 minutes
Answers
Answer:
Therefore, after 1 hour and 20 minutes, the snowfall in both cities was equal to 13 inch.
Step-by-step explanation:
Calculating the depth of First Town:
First town has accumulated 5 inches of snow.
As the depth is increasing by 6 inches every hour
- i.e. 6 inch = 1 hour
so the depth increase after 45 minutes i.e. 3/4 hour = 4.5 inch
so
After 45 minutes
Snow level of First town after 45 min = 4.5 + 5 = 9.5 inch
After 1 hour
Snow level of First town after 1 hour = 5 + 6 = 11 inch
After 1 hour and 20 minutes
5 + 6 + 2 = 13 inch ∵ If 6 inch per hour, then 2 inch in 20 min
Calculating the depth of Second Town:
Second town has accumulated 9 inches of snow.
As the depth is increasing by 3 inches every hour.
- i.e. 3 inch = 1 hour
so the depth increase after 45 minutes i.e. 3/4 hour = 2.25 inch
so
After 45 minutes
Snow level of Second town after 45 min = 9 + 2.25 = 11.25 inch
After 1 hour
Snow level of Second town after 1 hour = 9 + 3 = 12 inch
After 1 hour and 20 minutes
Snow level of Second town after 1 hour and 20 minutes
9 + 3 + 1 = 13 inch ∵ If 3 inch per hour, then 1 inch in 20 min
From the above observation, it is clear that after 1 hour and 20 minutes the snowfall in both cities was equal.
Therefore, after 1 hour and 20 minutes, the snowfall in both cities was equal to 13 inch.
Answers
Answers
speed=distance/time
find his speed in miles per 1 hour
3/4=0.75
s=d/t
s=45/0.75
s=60/1
s=60mph
starts in 1.25 hours
if he takes all that time, will he be late, on time, or early
multiply
60mph
1.25 hours
60 times 1.25=75
in 1.25 hour he can travel 75miles
he needs to only travel 65
75>65
he will make it
not late, he is early
s=speed
d=distance
t=time.
s=d/t
45 miles------------------3/4 hour
x----------------------------- 1 hour
x=(45 miles * 1 hour) / (3/4 hour)=60 miles.
speed or rate=60 miles / 1 hour.
2)we calculate the distance traveled at 1.25 hour.
distance=rate * time
distance=(60 miles /1 hour) * 1.25 hour=75 miles.
Answer: the driver would´t go late, because, the distance is 65 miles, and he can travel 75 miles if he drive with that speed .
Answers
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x=5
to do reverse multiplcation, you must divide so
x=5
x/10=5/10
x/10=1/2
then the other problem
x=5
5x=25
to solvve
x/10=1/2
multiply by 10
x=5
then
5x=25
divide both sides by 5
x=5