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3 years ago

A ratio of the number of boys to the number of girls in a choir is 5 to 4. There are 60 girls in the choir

1 answer:

7 0

The ratio is 4/5 girls to boys. if there are 60 girls you would divide 60 by 4 and get 15. you would then multiply that 15 by 5 to get the number of boys in the choir. your answer would be 75 because 15x5=75. there are 75 boys in the choir

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What is the rectangular equivalence to the parametric equations?

Usimov [2.4K]

Answer:

$\left(\frac{x-2}{3} \right)^{2}+\left(\frac{y+1}{2} \right)^{2} = 1$ (An ellipse)

Step-by-step explanation:

Let consider the following trigonometric identity:

$\sin^{2}\theta + \cos^{2}\theta = 1$

Each trigonometric function is cleared respectively in given parametric equations:

$\cos \theta = \frac{x-2}{3}$ and $\sin \theta = \frac{y + 1}{2}$

The equivalent expression in rectangular form is:

$\left(\frac{x-2}{3} \right)^{2}+\left(\frac{y+1}{2} \right)^{2} = 1$

Which represents an ellipse.

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3 years ago

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julia-pushkina [17]

Answer:

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Step-by-step explanation:

Probability is the likelihood of the occurrence of an event and are numbers.

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3 years ago

If s(x) = 2x2 + 3x - 4, and t(x) = x + 4 then s(x) · t(x) =

Paladinen [302]

Answer:

$\large\boxed{s(x)\cdot t(x)=2x^3+11x^2+8x-16}$

Step-by-step explanation:

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3 years ago

a painter leans an 18 foot ladder against the house so that the base of the ladder is 4 feet away from the wall. Approximately h

Neko [114]

I got 16.549 I pretty sure it's right using the method I did

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3 years ago

The representation that is used to display the spread of the data is

Vsevolod [243]

Answer:

The spread in data is the measure of how far the numbers in a data set are away from the mean or the median. ... You can also find the spread in the data set by using the interquartile range, which is a value that is the difference between the upper quartile value and the lower quartile value.

Step-by-step explanation:

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3 years ago