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Nataly [62]
3 years ago
12

The math test has 10 multiple choice questions each with 4 answer for Betty guesses correctly on the first two questions what is

the probability that she will guess correctly on the third question
1. 1/10
2. 1/4
3. 1/3
Mathematics
2 answers:
Sati [7]3 years ago
4 0

Answer:1/4

Step-by-step explanation:

lord [1]3 years ago
3 0
If she already gets the first two, thats a given 100% situation. then it is just 1/4
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Find the value of the following expression below 8(15-4)/4^2-5
Sonja [21]

Answer:

The correct answer is 1/2 or 0.5

Step-by-step explanation:


8(15-4)/4^2-5

8(11)/4^2-5

Now i'm going to multiply 8 by 11

88/4^2-5

Now solve 4^2

Which is 16.

Now we have 88/16-5

Divide 88 and 16 which is 5.5.

Now minus 5.5 - 5 which gets us our answer: 0.5


6 0
3 years ago
8.
mihalych1998 [28]

Answer

Secured

Step-by-step explanation:

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4 0
3 years ago
Read 2 more answers
the first four terms of a geometric progression are 2,10,50,250 a) write down the common ratio of the progression b) write down
VLD [36.1K]

Answer:

The common ratio is 5 and the 5th term is 1250

Step-by-step explanation:

The common ratio is given by

r=U(2)/U (1)

=10/2

=5

The fifth term

U (n)=ar^n-1

U(5)=2(5)^5-1

=2×5^4

=2×625

=1250

3 0
3 years ago
A store has 7 red shirts, 15 black shirts, 13
AleksAgata [21]

Answer:First you have to add all of the shirts together, which gives you: 40

Since 15 of those are black, then you need to put those 15 over the total number of 40, making it 15/40.

Then you must simplify by the highest number that will go into both, and since that number is 5, it will then go into 15 three times and it will go into 40 eight times.

That leaves you with the answer of: 3/8

6 0
3 years ago
I need help asap , im doing this thing and I cant do it im confused
aksik [14]

Answer:

they will be the same at 11 months

Step-by-step explanation:

the equations for this are

y = 40+55x

and

y = 165+30x

where x is the number of months

if you plug this into your graphic calc you see they are equal at 11 therefore, 11 months

6 0
3 years ago
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