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densk [106]
3 years ago
9

7. Which of the following has a certain

Mathematics
1 answer:
Sliva [168]3 years ago
6 0

Answer:

C.

Step-by-step explanation:

February has 28 days and on leap years 29. so there is an 11/12 chance that a month will have 29 days. a coin is 50/50. rain is 7/10. and a is irrational.

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2. Does the set of numbers form a Pythagorean triple? Explain.
nevsk [136]
So Pythagorean triples will always work with Pythagoras theorem which is a^2 + b2 = c^2 where c is the hypotenuse. So the biggest number (15) will be the hypotenuse so you must do (9^2) + (12^2) and if it is a triple you will get 15^2 so you do 81 + 144 which is 255 and 15^2 is 255 so therefore it is a Pythagorean triple because the numbers satisfy the equation. Hope this helps :)
7 0
3 years ago
12 bars of soap for $10.00 or 5 bars of soap for $4.00
Lady_Fox [76]
5 bars of soap for $4.00 because more money is save.
8 0
3 years ago
Using the diagram, explain why y =2x+1 and y=2x-3 have no solutions.
AlekseyPX
Because they have the same inclination so if we try to draw them on a diagram they will be parallel to each other.

7 0
3 years ago
Read 2 more answers
a team played 99 games. if they won 15 more than twice as many games as they loss how many wins and losses did they have.
rusak2 [61]
Lost 26
Won 67
Total 93
3 0
3 years ago
In details<br> Don't spam
Scrat [10]

Answer:

a = -4.

Step-by-step explanation:

25(√5)^a * (√5) ^3  = 5√5

25*5^a/2 * 5^3/2 = 5*5^1/2

25*5^a/2  = 5*5^1/2 / 5^3/2

25*5^a/2  = 5^1 *5^1/2 / 5^3/2

25*5^a/2 = 5^3/2 / 5^3/2 = 1

5^a/2 =  1/25 = 5^-2

The bases are equal, so

a/2 = -2

a = -4.

7 0
3 years ago
Read 2 more answers
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