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Firlakuza [10]
3 years ago
9

a recent survey of 300 pet owners that have either cats or dogs reveals that two thirds are dog owners. if there are 20,000 regi

stered cat owners how many dog owners are there?
Mathematics
1 answer:
alexandr1967 [171]3 years ago
7 0

40,000 Dog owners :3


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What is the product?<br> (6r-1)(- Br-3)
Andru [333]

Answer:

-6Br^2-18r+Br+3

Step-by-step explanation:

we have the expression:

(6r-1)(- Br-3)

We need to multiply the two terms in the first parenthesis by the two terms in the second parenthesis:

(6r)(-Br)+(6r)(-3)+(-1)(-Br)+(-1)(-3)

we solve each term taking into account the law of signs

(-)(-)=+

and

(+)(-)=-

also for the first term we use that r*r=r^2

thus we have:

-6Br^2-18r+Br+3

it can be simplified a little more if we factor an r of the second and third term:

-6Br^2+r(-18+B)+3

4 0
3 years ago
A waitress works 1.75 hours less in the afternoon than in the evening. If she works 5      1/8
gayaneshka [121]
Let x be the number of hours that the waitress works in the evening.

We know for our problem that she works 5 \frac{1}{8} in the afternoon and that she works <span>1.75 hours less in the afternoon than in the evening, so:
</span>x=5 \frac{1}{8} -1.75
<span>Since </span>\frac{1}{8} =0.125, we can rewrite our expression:
x=5.125-1.75
x=3.375

We can conclude that she works 3.375 hours in the evening, or expressed as a mixed fraction: 3 \frac{3}{8} hours.
3 0
3 years ago
The nile river, the longest river in the world, is 66.7x100 kilometers long. What is the nile's length?
kvasek [131]

Well if you multiply 66.7 x 100 you get 6,670.0. When multiplying by numbers like 10, 100, 1,000, etc, just simply transfer the 0's. So in this case, there are 2 0's in 100, so you add 2 of the 0's behind 66.7.  So when you add the 2 of the 0's you get 6,670.0 which should be your answer.

4 0
3 years ago
Solve for base. 450 crates is 0.90% of ___ crates
Tema [17]
Well... if 450 is 90% of the crates then 500 is 100%. 450 crates is 0.90% of 500 crates.
8 0
3 years ago
Which is the sum of -4 and its additive inverse?
Aneli [31]

Answer:

-4 +4 =0

Step-by-step explanation:

The sum of a number and its' additive inverse is 0

The additive inverse of -4 is 4

-4 +4 =0

3 0
2 years ago
Read 2 more answers
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