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Lera25 [3.4K]
3 years ago
12

A bag of numbered lottery balls contains the numbers 1 through 40. What is the probability that a randomly selected ball will be

a number that is not a multiple of 13?
Mathematics
2 answers:
Alexus [3.1K]3 years ago
5 0

Answer:

37/40

Step-by-step explanation:

there are only 3 multiples under 50

13, 26, and 39

So that means that the probability is 37/40

RoseWind [281]3 years ago
3 0

Answer:

37/40

Step-by-step explanation:

There are 3 numbers between 1 and 40 that are a multiple of 13: 13,26,39.

So, your probability should be 40-3/40, = 37/40.

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Is it possible to have a triangle such that none of the exterior angles is obtuse? Please help and explain
PolarNik [594]

Answer: No, it is not possible

A triangle can only have 1 obtuse interior angle, leaving the exterior angle next to it to be acute. For example, if you have an interior angle of 120 (obtuse) then the adjacent exterior angle is 60 (acute)

The other two interior angles must be acute if you go with 1 obtuse angle, which leaves the corresponding exterior angles to be obtuse. If you wanted the exterior angles to be all acute, then you would need 3 obtuse interior angles, but that is not possible.

Why isn't it possible to have 3 obtuse angles? Consider a triangle with interior angles A, B, C. The three angles must add to 180

A+B+C = 180

If A,B,C were all larger than 90, then

A > 90

B > 90

C > 90

A+B+C > 90+90+90

A+B+C > 270

but that contradicts A+B+C being equal to 180

6 0
3 years ago
Can someone help me with this I will mark brianliest !!! :D ^^
RoseWind [281]

Answer:

30

Step-by-step explanation:

in order to do this we have to look at the ratio and so in order to get from 10 to 60 on the denominator we multiply by 6 so what you do to the bottom you must also do to the top so we multiply the 5 by 6 and we get our answer of 30

7 0
3 years ago
Read 2 more answers
Craig saved $10,950 in a year. He saved $75 more than what he saved the previous
Dmitry [639]

Answer: $10,875

Step 1: Subtract.

10,950 - 75 = 10,875.

Step 2: Add a dollar sign.

$10,875

Hope this helps!

7 0
3 years ago
Read 2 more answers
Logan saved $35 from cutting the neighbor’s yard. He earns $10 a week from washing dishes, which he also saves. Which function c
balandron [24]

the answer is “s = 10w + 35” since he already has 35 but needs to find out how many weeks he washed the dishes :))

7 0
2 years ago
Tim had three toys and Sheila have four toys how many did they have together ?
Ainat [17]

Answer:

7 toys

Step-by-step explanation:

3+4=7

5 0
3 years ago
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