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3 years ago

Can someone please help me with these what are the answers?

Mathematics

1 answer:

cupoosta [38]3 years ago

4 0

Answer:

1. A relation

2b. Continuous

Step-by-step explanation:

1: A relation is any set of ordered pairs. A function is a set of ordered pairs where there is only one value for every value.

2b: Continuous if the values belonging to the set can take on ANY value within a finite or infinite interval. A set of data is discrete if the values belonging to the set are distinct and separated.

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An equation and the steps to solve it are shown below:

Sphinxa [80]

S1: 7x - 4x - 2 = 6 OK
S2: 3x - 2 = 6 OK
S3: 3x - 2 + 2 = 6 WRONG, correct is 3x - 2 + 2 = 6 + 2

Answer: c. Step 3, because a number has been added only to one side of the equation.

6 0

3 years ago

I think of a number multiply by two then subtract 9

EastWind [94]

Answer:

2n - 9

Step-by-step explanation:

Let the number be n. Then "a number multiply by two then subtract 9" yields

2n - 9

3 0

3 years ago

The angle of depression from a helicopter to a landing pad is 37 degrees. if the helicopter is 1250 feet from the ground. what i

djyliett [7]

The horizontal distance from the helicopter to the landing pad is 1658.81 feet

<em><u>Solution:</u></em>

The figure is attached below

Triangle ABC is a rightangled triangle

A helicopter is flying at point A and landing pad is at point c

Angle of depression of the helicopter is 37 degrees so angle of elevation of this helicopter from landing pad will be same as 37 degrees

The helicopter is 1250 feet from the ground

Therefore, AB = 1250 feet

To find: horizontal distance from the helicopter to the landing pad

BC is the horizontal distance from the helicopter to the landing pad

BC = ?

By the definition of tan,

$tan \theta = \frac{opposite}{adjacent}$

$tan 37 = \frac{AB}{BC}\\\\tan 37 = \frac{1250}{BC}\\\\ 0.75355 = \frac{1250}{BC}\\\\BC = \frac{1250}{0.75355}\\\\BC = 1658.81$

Thus the horizontal distance from the helicopter to the landing pad is 1658.81 feet

5 0

3 years ago

What is the difference of the fractions? Use the number line to help find the answer.

Vedmedyk [2.9K]

Answer:

-11/20

Step-by-step explanation:

$\frac{1}{5} - \frac{3}{4} = \frac{?}{?}$

first you want to get a common denominator (number on the bottom)

$\frac{4}{20} - \frac{15}{20} = \frac{?}{?}$

now you can subtract the numerators (number on tope) (also don't touch bottom)

$it ~equals = -\frac{11}{20} ~~because ~4-15 ~is -11$

3 0

3 years ago

Select all that apply.Several pennies are tossed in the air. Twelve land heads up and fifteen land tails up. Which of the follow

OverLord2011 [107]

The information we've been given is:

12 heads
15 tails

From those, we find that there are 12 + 15 = 27 coins.

Let's examine these ratios as such:

- 12 heads to 27 coins -
There are indeed 12 heads and 27 coins, so this comparison agrees with our data.

- 15 tails to 12 heads -
Again, nothing here contradicts with our data, so this would be correct as well

- 12 heads to 15 tails -
Simply a reversed version of the ratio above; still a completely valid way to compare the relative quantities of heads and tails

- 5 tails to 9 coins -
This one needs a little more examination. We observe that the ratio of tails to coins with our given data is 15 tails to 27 coins. This seems to go against our data, but we can simplify our ratio by dividing both the number of tails and the number of coins by 3, which indeed gives us the ratio 5 tails to 9 coins.

So, all of the given ratios are correct.

3 0

3 years ago

Read 2 more answers