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Lemur [1.5K]
3 years ago
7

The radius of a sphere is 13 cm. What is the surface area of the sphere? Round to the nearest tenth

Mathematics
1 answer:
AlekseyPX3 years ago
3 0

Answer:

2123.72 cm²

Step-by-step explanation:

Hope it helps

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Water use in the summer is normally distributed with a mean of 311.4 million gallons per day and a standard deviation of 40 mill
r-ruslan [8.4K]

Answer: 0.965

Step-by-step explanation:

Given : Water use in the summer is normally distributed with

\mu=311.4\text{ million gallons per day}

\sigma=40 \text{ million gallons per day}

Let X be the random variable that represents the quantity of water required on a particular day.

Z-score : \dfrac{x-\mu}{\sigma}

\dfrac{350-311.4}{40}=0.965

Now, the probability that a day requires more water than is stored in city reservoirs is given by:-

P(x>350)=P(z>0.965)=1-P(z

We can see that on comparing the above value to the given P(X > 350)= 1 - P(Z < b) , we get the value of b is 0.965.

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3 years ago
Which of the following best illustrates Closure of Addition for the set of Whole numbers?
Marrrta [24]
The answer to this is D!
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Factor using the trinomial<br> 10.<br> X2 + 13x + 12
Rudik [331]

Answer:

Factoring the trinomial: x^2+13x+12 we get the factors \mathbf{(x+1)(x+12)}

Step-by-step explanation:

We need to factor the trinomial: x^2+13x+12

We can factor the trinomial by breaking the middle term i.e 13x

Such that adding or subtracting gets the both terms we get 13x and multiplying both terms we get 12x^2

We can break 13x as: 12x and x

Adding them we get 13x and multiplying them we get 12x^2

So,

x^2+13x+12\\=x^2+12x+x+12\\=x(x+12)+1(x+12)\\=(x+1)(x+12)

So, Factoring the trinomial: x^2+13x+12 we get the factors \mathbf{(x+1)(x+12)}

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Four balls of wool will make 8 knitted caps. How many balls of wool will Malcom need if he wants to make 6 caps.
julia-pushkina [17]

Answer:

He needs 3 balls of wool to make 6 caps

Step-by-step explanation:

Its simple you will understand if u dont ask me for a explanantion

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Help!! I hate geometryyyy
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Answer:

AFB, BDC, and FBD

Step-by-step explanation:


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