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Anuta_ua [19.1K]
4 years ago
12

Answer #3 please {}{}{}{}{}{}{}{}{}{}{}{}{}{}{}{}{}{}{}{}

Mathematics
2 answers:
mylen [45]4 years ago
8 0
The answer is 24 please follow me for helping you .
Lemur [1.5K]4 years ago
5 0
All you have to do for questions like this is multiply 80×30%=24
Look at it on a calculator
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-8=8(-3+a) plz help me and show work simply
Viefleur [7K]

Answer:

- 8 = 8( - 3 + a) \\  - 8 =  - 24 + 8a \\ 8a = 16 \\ a = 2

4 0
3 years ago
Read 2 more answers
In a school in Florida, 60% of the students stay in the school's dormitory and 40% stay with their families. The school records
aivan3 [116]
We have events:

D - a <span>student stays in the school's dormitory
D' - </span>a <span>student stays with family
A - </span><span>a student receives As

and </span> probabilities:

P(D)=0.6\\\\P(D')=0.4\\\\P(A|D)=0.3\\\\P(A|D')=0.2

We want to calculate the probability <span>that the student lives in the school dormitory given he </span><span>receives As so it will be </span>P(D|A). From the <span>Bayes' theorem we know that:

P(D|A)=\dfrac{P(A|D)P(D)}{P(A)}

The only thing we don't know is P(A), but we can calculate it using the l</span><span>aw of total probability. There will be:

P(A)=P(A|D)P(D)+P(A|D')P(D')=0.3\cdot0.6+0.2\cdot0.4=\\\\=0.18+0.08=\boxed{0.26}

So our probability:

P(D|A)=\dfrac{P(A|D)P(D)}{P(A)}=\dfrac{0.3\cdot0.6}{0.26}=\dfrac{0.18}{0.26}=\boxed{\frac{9}{13}}

Answer D.
</span>
3 0
3 years ago
Read 2 more answers
26.6 is what percent of 53.2?
jekas [21]

Answer:

Step-by-step explanation:

26.6/53.2 = 0.5 = 50%

26.6 is 50% of 53.2

4 0
3 years ago
What is 12- 33/4 for my I ready
iogann1982 [59]
12 = 48/4

48/4 - 33/4 = 15/4 = 3 3/4
3 0
3 years ago
Read 2 more answers
5
stich3 [128]

Answer:

7.0 m/s

Step-by-step explanation:

We can solve this using the 2 kinematic equations and you can use either:

Vf=Vi+at\\\\vf^{2}=vi^{2}+2ad

So let's use the first one.

Vi = initial velocity

Vf = final velocity

a = acceleration due to gravity (constant 9.8m/s²)

t = time

The marble is dropped so this means that it is in free fall. The initial velocity is always 0m/s.

We are given then the following:

d = 2.5m

t = 0.71s

Vi = 0 m/s

a = 9.8m/s²

So we plug in the values we know and solve:

Vf = Vi + at\\\\Vf = 0 m/s + (9.8m/s^{2})(0.71s)\\Vf = 6.958m/s \cong 7.0m/s

7 0
3 years ago
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