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2 years ago

14

at a bakery, the ratio of the number of pies to the number of cakes was 8:3. What is the fraction of the number of cakes to the

number of pies.

2 answers:

Ber [7]2 years ago

7 0

Answer:

Step-by-step explanation:

kirza4 [7]2 years ago

4 0

Answer:

3

---

8

Step-by-step explanation:

the ratio of cakes to pies will be 3:8 if pies to cakes is 8:3

the fraction is 3/8

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(x + y + 3)(x + y - 4) multiplying polynomials

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X^2 + 2xy + -x + y^2 + -y + -12

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3 years ago

The probability of being a universal donor is 6% (O-negative-blood type). Suppose that 6 people come to a blood drive.' a) What

Tcecarenko [31]

Answer:

$Mean = 0.36$

$SD = 0.5817$

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Step-by-step explanation:

Given

Let

A = Event of being a universal donor.

So:

$P(A) = 0.06$

$n = 6$

Solving (a): Mean and Standard deviation.

The mean is:

$Mean = np$

$Mean = 6 * 0.06$

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The standard deviation is:

$SD = \sqrt{np(1-p)}$

$SD = \sqrt{6*0.06*(1-0.06)}$

$SD = \sqrt{0.3384}$

$SD = 0.5817$

Solving (b): P(x = 3)

The event is a binomial event an dthe probability is calculated as:

$P(x) = ^nC_x * p^x * (1-p)^{n-x}$

So, we have:

$P(x=3) = ^6C_3 * 0.06^3 * (1-0.06)^{6-3}$

$P(x=3) = ^6C_3 * 0.06^3 * (1-0.06)^3$

$P(x=3) = 20 * 0.06^3 * (1-0.06)^3$

$P(x=3) = 0.003588$

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2 years ago

A construction crew has just finished building a road. The crew worked for 10 days. If they built 314 kilometers of road each da

Klio2033 [76]

Answer:

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Step-by-step explanation:

If they made 314 kilometers per day and they worked for 10 days, multiply:

$314*10=3140$

The total length of the road is 3,140 kilometers.

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Step-by-step explanation:

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2 years ago