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3 years ago

Which statements are true regarding the the price of the arrangements select three answers.

Mathematics

1 answer:

natulia [17]3 years ago

5 0

Answer:

The first three statements are correct, the other two are wrong

Second to last problem: WRONG - Since the second to last problem is marked down by 40% we subtract 40% from 100% to get 60%. Now we just do 0.60*28 = 16.8 which makes the statement wrong.

Last problem: WRONG - The last one is marked down by 50% so that is 100% - 50% to get 50%. We do 0.50 * 28 to get 14, making the statement wrong.

The first 3 statements are correct, and the 2 last ones are wrong

- Hope this helped! :)

Brainiest is most appreciated:)

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A recipe for 12 corn muffins calls for 1 cup of flour. The number of muffins you can make varies directly with the amount of flo

Deffense [45]

1 cup makes 12
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3 years ago

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Jacqueline is checking her bicycle’s wheel. The wheel has a radius of 20 cm, and its center is 51 cm above the ground. Jacquelin

Alex777 [14]

Answer:

h = 36.9 cm

Step-by-step explanation:

The function given to us is:

h(t) = 51 + 20 sin(225t)

Where h(t) is the function of the height in centimeters while t represents the time in seconds.

We have to find the height h(t) when the time is equal to 19 seconds.

Substitute t=19 into the given function

h(19) = 51 + 20 sin(225(19))

h(19) = 51 + 20 sin(4275)

h(19) = 51 + 20 (-0.7071)

h(19) = 51 + (-14,1421)

h(19) = 36.8579 cm

Rounding off to nearest 10th

h = 36.9 cm

6 0

3 years ago

Simplify 2^9/2^6 A. 2^15 B. 4^3 C. 4^-3 D. 2^3

nirvana33 [79]

Answer:

Step-by-step explanation:

4 0

2 years ago

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Raju borrows rupees 16000 for 2years. the rate of interest for two successive years are 10% and 12%. If he repays rupees 5600 at

Marina86 [1]

Answer is 12,151 rupees.

16000 rupees : 24(bc 2 years)=666 rupees per month.

666 rupees + 10% of the interest rate for the first year= 732 rupees per month for the first year.

For the first year he had to pay 8792 rupees in total.

For the second year he had to pay 8959 bc the interes rate was 12% for the second year.

He only paid 5600 rupees.

8792 rupees + 8959 rupees = 17,751 rupees.

17,751 rupees - 5600 rupees( that he paid) = 12,151 rupees.

Thank you

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3 years ago

The coefficient of determination: a. cannot be negative b. is the square root of the coefficient of correlation c. can be negati

patriot [66]

Answer:

Correct statement: (a) and (b).

Step-by-step explanation:

R-squared is a statistical quantity that measures, just how near the values are to the fitted regression line. It is also known as the coefficient of determination.

The coefficient of determination is the squared value of the correlation coefficient.

That is,

$R^{2}=(r(X, Y))^{2}$

The correlation coefficient between two variables is the measure of the strength and direction of the relationship between two variables.

Its values ranges from -1.00 to +1.00.

Although r can be negative but R² is always positive, since square of a negative number is also positive.

So the correct statements are:

a. cannot be negative

b. is the square root of the coefficient of correlation

5 0

3 years ago