Select the correct answer.

True or False: in a table of a proportional relationship, the ratio or y/x is constant.

musickatia [10]

Answer:

True

Step-by-step explanation:

Say u had a question like this

"Maddy went to get 5 things from the store.When she got back she bought 10 more items . how many more items were bought

u would set it up like:

5 x

_= _

10 100

Times 100 and 5 and divide by 10

3 0

3 years ago

There are five trees per square mile. Linda cuts down every tree in a 6

Verdich [7]

Answer:

3 trees and a square mile takes 1 tree

Step-by-step explanation:

a square mile means 2 miles each

4 0

3 years ago

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Measure the lengths of the sides of ∆ABC in GeoGebra, and compute the sine and the cosine of ∠A and ∠B. Verify your calculations

marusya05 [52]

Answer:

$Sin \angle A =0.80$

$Cos \angle A=0.60$

$Sin \angle B =0.60$

$Cos \angle B=0.80$

Step-by-step explanation:

Given

I will answer this question using the attached triangle

Solving (a): Sine and Cosine A

In trigonometry:

$Sin \theta =\frac{Opposite}{Hypotenuse}$ and

$Cos \theta =\frac{Adjacent}{Hypotenuse}$

So:

$Sin \angle A =\frac{BC}{BA}$

Substitute values for BC and BA

$Sin \angle A =\frac{8cm}{10cm}$

$Sin \angle A =\frac{8}{10}$

$Sin \angle A =0.80$

$Cos \angle A=\frac{AC}{BA}$

Substitute values for AC and BA

$Cos \angle A=\frac{6cm}{10cm}$

$Cos \angle A=\frac{6}{10}$

$Cos \angle A=0.60$

Solving (b): Sine and Cosine B

In trigonometry:

$Sin \theta =\frac{Opposite}{Hypotenuse}$ and

$Cos \theta =\frac{Adjacent}{Hypotenuse}$

So:

$Sin \angle B =\frac{AC}{BA}$

Substitute values for AC and BA

$Sin \angle B =\frac{6cm}{10cm}$

$Sin \angle B =\frac{6}{10}$

$Sin \angle B =0.60$

$Cos \angle B=\frac{BC}{BA}$

Substitute values for BC and BA

$Cos \angle B=\frac{8cm}{10cm}$

$Cos \angle B=\frac{8}{10}$

$Cos \angle B=0.80$

Using a calculator:

$A = 53^{\circ}$

So:

$Sin(53^{\circ}) =0.7986$

$Sin(53^{\circ}) =0.80$ -- approximated

$Cos(53^{\circ}) = 0.6018$

$Cos(53^{\circ}) = 0.60$ -- approximated

$B = 37^{\circ}$

So:

$Sin(37^{\circ}) = 0.6018$

$Sin(37^{\circ}) = 0.60$ --- approximated

$Cos(37^{\circ}) = 0.7986$

$Cos(37^{\circ}) = 0.80$ --- approximated

8 0

3 years ago

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Nicholas sent a chain letter to his friends, asking them to forward the letter to more friends. Every 121212 weeks, the number o

Genrish500 [490]

Answer:

Since the question is incomplete, see below for a fully understanding of this kind of questions.

Explanation:

The question is incomplete but you can set some assumptions and determine the function that model the situation.

The relevant data of the text are:

Every 12 weeks, the number of people who receive the email increases by and additional 99%

From that you can:

determine the growing factor
determine the function P, which depends of the amount of time t (weeks) and models the function

<h2 /><h2>Solution</h2>

You can build a table or write a sequence to help you to figure out what is going on:

First, you need to know the number of friens to whom NIcholas initially sent the chain letter. You must assume a number. Assuming Nicholas initially sent the chain letter to 10 frirends, this would be the table:

t (weeks) P(t)

0 10

12 10 + 99% of 10 = 10 + 0.99× 10 = 10 (1.99)

24 10(1.99)(1.99) = 10 (1.99)² ↔ two times 12 weeks

36 10(1.99)³ ↔ three times 12 weeks

This is every 12 weeks the number of people who recieve the email is multiplied by 1.99.

That means that the grow factor is 1.99 every 12 weeks, and the power of the exponential function is the number of 12 weeks elapsed, which is t divided by 12: t/12

$P(t)=10(1.99)^{(t/12)}$

It is important that you realize that t/12 means the number of times that 12 weeks elapse.

6 0

3 years ago

Evaluate the formula for B = 36 in.2 and h = 11 in. 132 in.3 44 in.3 396 in.3 13.2 in.3

Arte-miy333 [17]

132 in.3

Don't forget to mark this as brainliest :)

7 0

3 years ago

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