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3 years ago

Simplify the ratio of 15:24

2 answers:

7 0

To simplify the ratio 15:24 you have to find the G.C.F of 15 and 24. 15:1,3,5,15 24:1,2,3,4,6,8,12and24. What they have in common is 1and3. the biggest one is 3 so you divide by 3.THE answer is 5:8

Anettt [7]3 years ago

3 0

15÷3 and 24÷3

= 5:8
hop u found this helpful

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What is the rate of growth, as a percent, for the following function? D(x)=23(1.0032)x

maks197457 [2]

I will assume you meant D(x)=23(1.0032)^x, if so:

The growth rate as a percentage is 100(.0032)=0.32% (about 1/3 of 1%)

3 0

3 years ago

"You measure 34 dogs' weights, and find they have a mean weight of 67 ounces. Assume the population standard deviation is 13.5 o

liraira [26]

Answer:

The 95% confidence interval for the true population mean dog weight is between 62.46 ounces and 71.54 ounces.

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1-0.95}{2} = 0.025$

Now, we have to find z in the Ztable as such z has a pvalue of $1-\alpha$ .

So it is z with a pvalue of $1-0.025 = 0.975$ , so $z = 1.96$

Now, find M as such

$M = z*\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

$M = 1.96*\frac{13.5}{\sqrt{34}} = 4.54$

The lower end of the interval is the sample mean subtracted by M. So it is 67 - 4.54 = 62.46 ounches.

The upper end of the interval is the sample mean added to M. So it is 67 + 4.54 = 71.54 ounces.

The 95% confidence interval for the true population mean dog weight is between 62.46 ounces and 71.54 ounces.

7 0

4 years ago

Mai received and spent money in the following ways last month. For each example, write a signed number to represent the change i

atroni [7]

The signed numbers that represent a change in money from her perspective is:

+$25

+$14

-$10

-$3

+$2

<h3>What are the signs to put in front of the amounts?</h3>

When a person receives money, earns interst or his paid wages, the amount of money the person has increases. Thus, the sign to be used is the addition sign(+).

When a person pays for an item, donates to charity or loses money, the amount of money the person has reduces. Thus, the sign to be used is the subtraction sign (-).

To learn more about addition, please check: brainly.com/question/349488

6 0

3 years ago

Evaluate the expression for y = -7.<br><br> 2y = __

vivado [14]

Answer:

2y=-14

Step-by-step explanation:

If y=-7 and you multiply y by 2, you do the same thing to both sides and get -7 × 2 = -14

5 0

3 years ago

What are the zeros of the polynomial function? <br><br> F(x)= x^2 +12x

Pavel [41]

Answer:

x = 0 and x = -12 are the two zeroes

Step-by-step explanation:

"Zeroes" of a function are also called the solutions, roots or x intercepts.

The zeroes are the numbers that give the function a values of 0, so find what value for 'x' yields F(x) = 0 as a result.

With quadratic equations (equations with x² as the largest exponent), you factor the equation.

Step 1: Set the equation equal to zero

x² + 12x = 0

Depending on the equation, there are several methods you can use to factor, for this one we can factor out an 'x' since both terms have an 'x' in them. We get...

x(x + 12) = 0

So now, using the "zero product property" which means that if two things are multiplied together, and the result is zero, then either the first term is zero, the second term is zero, or they are both zero. So we set each term equal to zero and solve.

either x = 0 or x + 12 = 0

Solve each for x to get your two anwers.

x= 0 is already solved, so 0 is our first zero

Now solve

x + 12 = 0

x = -12 (subtract 12 from both sides to isolate x)

8 0

4 years ago