3 years ago

How do you calculate ratios

Mathematics

1 answer:

Marrrta [24]3 years ago

4 0

Answer:

A link for a calculator that I use for ratios

Step-by-step explanation:

https://www.calculatorsoup.com/calculators/math/ratios.php

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Find the value of y if given: 20y-2, 17y +3, 5x + 8, 21x

rodikova [14]

20y-2=
20y=2
20y/20=2/20
y=0.1

17y +3=
17y=-3
17y/17=-3/17
y=-0.176

7 0

3 years ago

What is square root of 29

VladimirAG [237]

Answer:

5.38516480713

Step-by-step explanation:

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3 years ago

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ehidna [41]

Answer:

x=13

Step-by-step explanation:

Switch sides:

2x−9=17

Add 9 to both sides:

2x−9+9=17+9

Simplify

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2x/2 =26/2

Simplify to get the result.

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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:

$Mean = 0.36$

$SD = 0.5817$

$P(x=3) = 0.003588$

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:

$Mean = np$

$Mean = 6 * 0.06$

$Mean = 0.36$

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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3 years ago

45 less than twice Jose’s savings. Use the variable J to represent Jose’s savings

allochka39001 [22]

The answer is
(J•2)-45=

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3 years ago