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almond37 [142]
3 years ago
7

What are the square roots of 81? I​

Mathematics
2 answers:
ipn [44]3 years ago
7 0
The square root of 81 is 9
kvasek [131]3 years ago
5 0

Answer:

9

Step-by-step explanation:

Square root is to multiply same number to get high number.

Example: square root of 81.

9 x 9 = 81

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A certain cold remedy has an 88% rate of success of reducing symptoms within 24 hours. Find the probability that in a random sam
Hitman42 [59]

Answer:

The probability of cured people in who took the remedy is 8/9.

Step-by-step explanation:

Success rate of the cold remedy = 88%

The number of people who took the remedy = 45

Now, 88% of 45 = \frac{88}{100}  \times 45 = 39.6

and 39.6 ≈ 40

So, out of 45 people, the remedy worked on total 40 people.

Now, let E: Event of people being cured by cold remedy

Favorable outcomes = 40

\textrm{Probability of Event E}  = \frac{\textrm{Total number of favorable outcomes}}{\textrm{Total outcomes}}

or, \textrm{Probability of people getting cured}  = \frac{\textrm{40}}{\textrm{45}}  = \frac{8}{9}

Hence, the probability of cured people in who took the remedy is 8/9.

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3 years ago
Candy is on sell for $0.75 each. You have a coupon for $.25 off your total purchase. Write a function rule for the cost of n pie
enyata [817]

t(n)=.75n-.25

Term number x .75 subtract .25



6 0
3 years ago
Read 2 more answers
Che sum of two numbers is 2. If one number is subtracted from the other, their difference is - 8. Find the numbeRs
goldfiish [28.3K]
I wanna say 10 or ether -10 since if it was subtracted from 2 then it would equal -8
7 0
2 years ago
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What is the missing<br> symbol (?) to make<br> this true?<br> 54 + 24 ? 23 – 30 = 32
Aloiza [94]

The division ➗ ÷ sign will make the expression correct if you correct the question!

5 0
3 years ago
If sin ⁡x=7/25, and 0 &lt; x &lt; π/2, what is cos⁡(x−3π/2)?
Likurg_2 [28]

Answer:

Cos(x-\frac{3\pi}{2})=-\frac{7}{25}

Step-by-step explanation:

Remember that cos(x-y)=cos(x)cos(y)+sin(x)sin(y)

Then,

cos(x-\frac{3\pi}{2})=cos(x)cos(\frac{3\pi}{2})+sin(x)sin(\frac{3\pi}{2})\\

But cos(\frac{3\pi}{2})=0 and sin(x)=\frac{7}{25}

Then

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5 0
3 years ago
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