What is 2X^2+9x-1=0 ?

At an animal shelter, there are 15 dogs and 12 cats.

Bond [772]

Answer:

Dogs: 44.44 Cats: 55.556

Step-by-step explanation:

*this is only if you are allowed to use a calculator*

1. You have to add the total of the cats and dogs

Why? Here, let me put it this way. You have a test with two sections: math and science. If there are 2 Maths Questions and 2 Science questions, what percent of the test are math questions? You would not say 2/2 and say 100. You would say 2/4 because it is obvious. You do the same in this case but it is not as noticeable because you are dealing with bigger numbers.

15 + 12 = 27.

2. Solve

a. There are 15 dogs and 12 cats that makes up 27 pets total.

So you have to do 12/27 for cats,

15/27 for dogs. The fractions equal one and It shows you how much of one is there compared to the total.

b. Simplify

You can simplify these fractions:

for 12/27, divide the numerator and the denominator by 3.

You get 4/9

Divide 15/27 for dogs by 3 as well to get 5/9.

5+4 is 9, which means that I am doing the math correctly.

According to the calculator, 5/9 is 55.556, and 4/9 is 44.444

They should be accurate because there are more dogs than cats and the percentage for dogs are higher. Hence, this is correct.

Cats = 4/9 = 44.444%

Dogs = 5/9 = 55.556%

Hope this helps :)

-jp524

7 0

2 years ago

Why does 843,000 round to 840,000 rather than 850,000 when rounded to the nearest ten thousand

Serjik [45]

Because 843,000 is closer to 840,000 than 850,000

5 0

3 years ago

Read 2 more answers

Line r passes through points (5, 3) and (9, 8). Line s is perpendicular to r. What is the slope of line s?

ludmilkaskok [199]

Answer: The slope of the line would be 1.25!

Step-by-step explanation: I'll provide a screenshot of the graph I have made in a second! (:

6 0

2 years ago

Do numbers need to be listed in order when determining the arithmetic mean

Dafna11 [192]

Using the commutative property of addition, and since we simply add the numbers together in parenthesis, they do not

4 0

3 years ago

An equilateral triangle with sides of length 6 is inscribed in a circle what is the diameter

Nataly_w [17]

Answer:

The diameter of the circumscribed circle is 6.92

Step-by-step explanation:

In the question, we are asked to calculate the diameter of a circle, which has a an equilateral triangle inscribed in it.

To solve this problem, let us consider the diagram attached.

Now let’s assume the point o is the center of the circle and that r is the radius of the circle. Now to calculate this radius, we need to employ the use of a trigonometrical ratio.

According to the question, we can see that we have the adjacent and the hypotenuse, so the trigonometric identity to use is the cosine.

Mathematically;

Cosine 30 = 3/r

r = 3/cosine 30

Cosine 30 = 0.866

r = 3/0.866

r = 3.46

But in the question, we were asked to calculate the diameter and not the radius.

Mathematically; d = 2r = 2 * 3.46 = 6.92

5 0

3 years ago