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nexus9112 [7]
3 years ago
6

How many 3-digit numbers can be formed using the digits 1, 2, 3, 4, 5, 6, 7 if repetition of digits is not allowed?

Mathematics
1 answer:
attashe74 [19]3 years ago
7 0
Think of it this way:
_ _ _ (3 digit number)

for the first blank you could have 7 possibilities
for the second blank you could have 6 possibilities
for the third blank you could have 5 possibilities
because each time you fill in a blank one number is removed from the list of possibilities

7×6×5=210. there are 210 possibilities
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Josie used 1/2 of the milk for pancakes this morning. If her brother and sister divided what was left to eat cookies with their
gogolik [260]

Answer:

1/4 cup of milk

Step-by-step explanation:

= 1/2 ÷ 2

= 1/2 × 1/2

= 1/4

4 0
2 years ago
The amount of money Tom has is 75% of Sallys amount of money. After Sally spent $120 and Tom saved all his money Tom's amount of
egoroff_w [7]

Answer: sally initially has $240, Tom initially has $180.

Step-by-step explanation:

Let initial amount of money sally has = x

Then, initial amount tom has = 75% * x = 0.75x

Now to present,

Amount sally has = x -120

Amount tom has = [x - 120] + [50% * (x-120)]

= x - 120 + 0.5x - 180

= 1.5x - 180

Since Tom didn't spend, it means this is the same amount tom has then we equate both equations.

0.75x = 1.5x - 180

180 = 0.75x

x = 240

Therefore, initial money of sally of sally = $240

Initial money of tom = 240 * 0.75 = $180.

6 0
3 years ago
I need help and will give braimleiest if right plus 25 points please​
12345 [234]

Answer:

I think <2 = 37⁰

Step-by-step explanation:

if I remember correctly, if its straight across from it, it must be the same angle.

which means that 1 and 3 must have the same angle, and 2 must have the same angle as the other side, meaning its angle is 37⁰.

3 0
3 years ago
Read 2 more answers
How do you do this?
Nat2105 [25]
U just need to add row by row
I'll do the first 1: 1+1=2
1+2=3
1+3=4
1+4=5
1+5=6
3 0
3 years ago
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Evaluate the expression if x = 3 and y = 6.<br> 4x + 3y
mylen [45]
Here, Just substitute their values, 
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= 4(3) + 3(6)
= 12 + 18
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In short, Your Answer would be 30

Hope this helps!
3 0
3 years ago
Read 2 more answers
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