Which expression is equivalent to −15x + 6

Answers

Answer 1

Answer: The answer is -15x + 6= -9x

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30 POINTS The graph shows how many inches above the ground, y, the valve on a rotating tire is for a given number of seconds x.

How many degrees is the tire turning every second?

Enter your answer in the box.

Answers

Answer:

180 degrees per second.

Step-by-step explanation:

We have been given a graph that shows the distance covered by a tire or angular velocity of a tire with respect to the number of seconds (x).

Since we know that a tire is a circle and the measure of all the angles of a circle equals to 360 degrees.

We can see from our given graph that the tire completes one rotation in 2 seconds (2.5-0.5), so the distance covered by tire in two seconds will be 360 degrees. This means that the tire turns 360 degrees in each 2 seconds.

$\text{Degrees turned by tire in 2 seconds}=\frac{360^o}{2\text{ seconds}}$

As we are asked to find the degree change by tire per second so we will find the unit rate such that we will have 1 in our denominator. By dividing our numerator and denominator by 2 we will get,

$\text{Degrees turned by tire in every second}=\frac{180^o}{\text{ second}}$

Therefore, the tire is turning 180 degrees per second.

It takes 2 seconds for the tire to make a full revolution. This is evident from the plot - the curve has a period of length 2.

A full revolution of the tire is a turn of 360 degrees.

So the tire turns at a rate of (360 degrees)/(2 seconds) = 180 degrees/second.

HELP ME FAST PLEASE!
y varies directly with x, and y=2. What is the value of y when x=5?

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my answer would be 10, but I might be wrong

Identify the domain of the function shown in the graph.

Answers

Answer:

x is all real numbers

Step-by-step explanation:

Domain is the set of all values of x for which the function is defined.

Range is the set of all y values for which the function is defined

From the given graph , we have graph for all values for x.

The graph is continuous and smooth. there is no restriction for x.

So , the domain is all real numbers

x is all real numbers

C. x is all real numbers

if 5 potatoes together have a mass of 1 kilogram and 8 pears together have a mass of 1,200 grams, which has the greater mass, a potato or a pear? explain

Answers

The potatoes because kilograms are bigger than grams

Final answer:

The pear has a greater mass than the potato.

Explanation:

To compare the mass of a potato and a pear, we need to convert the mass of each to the same unit. Since the mass of the potatoes is given in kilograms and the mass of the pears is given in grams, we need to convert the mass of the pears to kilograms. There are 1,000 grams in a kilogram, so the mass of the pears is 1.2 kilograms.

Comparing the mass of the potato and the pear, we can see that the pear has a greater mass of 1.2 kilograms, while the potato has a mass of 1 kilogram.

Therefore, the pear has a greater mass than the potato.