3 years ago

Your test scores for the semester are 87,84 and 85.Can you raise your test average to 90 with you next test?

Mathematics

1 answer:

Rainbow [258]3 years ago

6 0

Answer:

Yes

Step-by-step explanation:

If you add 87.84, 85, and 100 you get 272.84. Once you divide that by 3 you get 90.946, which would be your test average if you score 100 on your next test.

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3 years ago

Find the probability of atleast three successes in six trials of a binomial experiment in which the probability of success is 50

yan [13]

The binomial cumulative probability with p=0.5 for 3+ successes is as follows:

$P(3+)=\sum_{k=3}^6 {{6}\choose{k}}p^k(1-p)^{6-k}$

for p=0.5 (50% success rate) it becomes:

$P(3+)=\sum_{k=3}^6 {{6}\choose{k}}0.5^6=\frac{21}{32}=0.65625$

the probability is 0.65625, or about 66%

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3 years ago

The length of the ears on the shadow puppet is 3 inches. The length of the ears on the shadow is 4 inches. What is the scale fac

Rufina [12.5K]

The scale factor is the number u multiply by the first image to get to the second image.

so 3 times what = 4
3x = 4
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3 years ago

3(2c-8) - 10c > 0 can some one explain how to solve this ?

Jet001 [13]

Answer:

c < - 6

Step-by-step explanation:

Given

3(2c - 8) - 10c > 0 ← distribute and simplify left side

6c - 24 - 10c > 0

- 4c - 24 > 0 ( add 24 to both sides )

- 4c > 24

Divide both sides by - 4, reversing the inequality symbol as a consequence of dividing by a negative quantity.

c < - 6

8 0

3 years ago

The sum of prime number<br> less than x is 58<br> find an integer value for x

s344n2d4d5 [400]

Answer:

but it can be 18 too

cuz the q doesn't tell us that the value of x has to be a prime no.

Step-by-step explanation:

2+3+5+7+11+13+17=58

6 0

3 years ago