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2 years ago

X + 2y = 5

Mathematics

2 answers:

sveta [45]2 years ago

5 0

The answer should be Letter B

dolphi86 [110]2 years ago

3 0

The answer is b 2,-3

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(01.01 LC)

maw [93]

Answer:

Square root of 36.

Step-by-step explanation:

The square root of 36 = 6 so this is rational.

Recall that a rational number is one that can be written as a/b where a and b are not 0. 6 can be written as 6/1.

3 0

3 years ago

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if a class of 20 students 40% are boys. twenty-five percent often boys and 50% of the girls wear glasses. how many students wear

shtirl [24]

2 boys and 6 girls wear glasses, so 8 students wear glasses

7 0

2 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:

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

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

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

$P(x=3) = 0.003588$

7 0

2 years ago

What are the x-intercept and y-intercept of the graph of y=1/3x−6 ?

Paraphin [41]

The y-intercept is -6, and the x-intercept is 18

6 0

2 years ago

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Jamel watched his older brother Robert lift weights. The bar alone had a mass of 20 kg. On the bar he had tow 11.4 kg weights, t

slavikrds [6]

All you do is add them all together...
20 + 11.4 + 11.4 + 4.5 + 4.5 + 0.45 + 0.45 + 0.45 + 0.45 = 53.6Kg
(note that 0.45 is 450g in Kg, When adding things such as weight or length you want to make sure that they are all in the same unit)

6 0

3 years ago