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3 years ago

5

At Central Online High School, 45/100 of the students have a dog, 30/100 of the students have a cat, and 18/100 of the students

have both a dog and a cat. What is the probability that students who have a cat also have a dog?

1 answer:

d1i1m1o1n [39]3 years ago

8 0

Answer:

<h2>6/15</h2>

Step-by-step explanation:

18/30 becuase 30 have a cat and 18 have both.

18/30 = 6/15

I'm always happy to help :)

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How many significant figures are in each of the following measurements? A. 0.4004 mL. B. 6000 g. C. 1,000 30 km. & D. 400. m

OLga [1]

The rules of significant figures are: 1. all non zeros are significant. 2. trailing zeros are significant. 3. zeros between non-zeros are signifincant. Hence, applying these to the given.
A. 4 sig figs
B. 1 sig fig
C.6 sig figs
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3 years ago

2(1 – 8x) = 1/2 (8 - 64x)

faust18 [17]

Answer:

$x=\frac{1}{8}$

Step-by-step explanation:

A quick review on PEMDAS, the order of how to solve an equation:

P - parentheses. When parentheses are being used, you have to do everything inside them before doing everything outside of them.

E - exponents. We'll skip these, since there aren't any exponents we need to worry about in this equation.

M/D - multiplication/division. I include these both together because they can be done at the same time.

A/S = addition/subtraction. Can also be done at the same time.

Some other things to note:

You add all the things with an x attached to it, and you add all the things without an x attached to it, and these never cross.

When you bring something from one side of an equal sign to another, you make it negative.

Let's solve for x using what we've learned:

$2(1-8x)=\frac{1}{2} (8-64x)\\2-16x=4-32x\\16x=2\\x=\frac{2}{16} \\x=\frac{1}{8}$

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3 years ago

Which function is graphed below? a) y=1/3(3)^x b) y=3(1/3)^x c) y=(1/2)^x+2 d) y=(2)^x-1

Serjik [45]

Answer:

B.

Step-by-step explanation:

The quickest way to do this is to use a graphing calc or an online graphing program and graph each problem. When you do so, you should get B. y=3(1/3)^x as your answer.

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3 years ago

If z is inversely proportional to r, and z= 32 when r=1.5, find r when z=8.

lions [1.4K]

Inversely proportional: z = k/r
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Plug that into equation
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Multiply both sides by r
8r = 48
Divide by 8
r = 6

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3 years ago

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Murljashka [212]

$3x^2-192=0$
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5 0

3 years ago

Read 2 more answers