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3 years ago

Hannah and Andrea were selling

Mathematics

2 answers:

Galina-37 [17]3 years ago

5 0

Answer:

Step-by-step explanation:

krok68 [10]3 years ago

5 0

Answer:

Step-by-step explanation:

just read to the first one

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Enter your answer as an improper fraction, in simplified form, in the box.Multiply. 7⋅ 3 4

N76 [4]

I am interpreting your question as 7 * 3/4. First we multiply 7 and 3 together to get 21. Now we divide 21 by 4. Because 21 isn't divisible by 4 and they share no common factors, 21/4 is our answer.

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4 years ago

A square pool has a triangular platform in the center. The pool measures 5 meters on a side. The base of the triangular platform

ollegr [7]

30 meters papi chulo uessssssssssssssss

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3 years ago

Last year, Keiko had $20,000 to invest. She invested some of it in an account that paid %7 simple interest per year, and she inv

erma4kov [3.2K]

Answer:

$P_2 = \$6,000\\P_1 = \$14,000$

Step-by-step explanation:

The formula of simple interest is:

$I = P_0rt$

Where I is the interest earned after t years

r is the interest rate

$P_0$ is the initial amount

We know that the investment was $20,000 in two accounts

_______________________________________________

<u><em>For the first account</em></u> r = 0.07 per year.

Then the formula is:

$I_1 = P_1r_1t$

Where

$P_1$ is the initial amount in account 1 at a rate $r_1$ during t = 1 year

$I_1 = P_1(0.07)(1)\\\\I_1 = 0.07P_1$

<u><em>For the second account </em></u>r = 0.05 per year.

Then the formula is:

$I_2 = P_2r_2t$

Where

$P_2$ is the initial amount in account 2 at a rate $r_2$ during t = 1 year

Then

$I_2 = P_2(0.05)(1)\\\\I_2 = 0.05P_2$

We know that the final profit was I $1,280.

$I = I_1 + I_2=1,280$

Substituting the values $I_1$ , $I_2$ and I we have:

$1,280 = 0.07P_1 + 0.05P_2$

As the total amount that was invested was $20,000 then

$P_0 = P_1 + P_2 = 20,000$

Then we multiply the second equation by -0.07 and add it to the first equation:

$0.07P_1 + 0.05P_2 = 1.280\\.\ \ \ \ \ \ \ \ +\\-0.07P_1 -0.07P_2 = -1400\\-------------$

$-0.02P_2 = -120\\\\P_2 = 6,000$

Then $P_1 = 14,000$

4 0

3 years ago

A game involves spinning this spinner. What is the probability of the pointer landing on Y ?

IRISSAK [1]

Here are the steps to answer this question:

1. Find the denominator. Since there is 8 possible outcomes, our denominator will be 8.

2. Find the numerator. To do this we need to find out of all the 8 possible outcomes, how many are them are y. Since its only 1 y, the numerator will be 1.

3. Now all we have to do now is make our fraction. The 8 possible outcomes given, only one of them has y which means that our fraction will be 1/8.

4. Answer: 1/8 or .125 or 12.5% chance for the spinner to land on y. I hope this helps!

6 0

4 years ago

The following data show the height, in inches, of 11 different plants in a garden:

Andreas93 [3]

On average, the height of a plant varies 3.2 inches from the mean of 6 inches.

<h3>What does the mean absolute deviation represent? </h3>

An outlier is a number that is way smaller or way larger than that of other numbers in a data set. The outlier is 22.

Mean absolute deviation = (1/n) x ∑ l x - m(x) l

Mean without the outlier : (9 + 4 + 10 + 9 + 5+ 2 + 10 + 3 + 3+ 5) / 10 = 6

(1/10) x ∑ l (9 - 6) + (4 - 6) + (10 - 6) + (9 - 6) + (5 - 6) + (2 - 6) + (10 - 6) + (3 - 6) + (3 - 6) + ( 5 - 6) = 3.2

To learn more about outliers, please check: brainly.com/question/27197311

#SPJ1

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2 years ago