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3 years ago

Which of the following functions is graphed below?

Mathematics

2 answers:

11Alexandr11 [23.1K]3 years ago

7 0

We can't tell from the graph whether the left point of each step is included, or the right point. If the left, this is a graph of
y = 7 + floor(x)

Maslowich3 years ago

7 0

Answer:

Greatest integer function.

Step-by-step explanation:

The given graph is of greatest integer function which is the function that gives the output in integer number and is denoted by [ ].

For Example: [0.01]=0

[1.2]=1

Its graph is a discontinuous graph.

This is graph of [x] where x from -3 to 10.

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Dave can complete a sales route by himself in 4 hours. James can do the same job in 5 hours. How long will it take them to do it

Alexeev081 [22]

We can solve this problem by calculating the individual rate of working and equate it to their total rate of working.

If Dave can complete a sales route in 4 hours, then his working rate is

$\frac{1}{4}$

Also, if James can do it in 5 hours, then his working rate is

$\frac{1}{5}$

Let
$x$
be the hours that both will use to complete the sales route,

Then rate at which both completes this task is
$\frac{1}{x}$

Meaning if we add their individual rates we should get

$\frac{1}{x}$

That is;

$\frac{1}{4} + \frac{1}{5} = \frac{1}{x}$

The LCM is
$20x$

So let us multiply through with the LCM.

$20x \times \frac{1}{4} + 20x \times \frac{1}{5} =20x \times \frac{1}{x}$

$5x + 4x = 20$

We simplify to get,

$9x = 20$

Dividing through by 9 gives;

$x = \frac{20}{9}$

$x = 2\frac{1}{9}$

Therefore the two will complete sales route in
$2 \frac{1}{9}$
hours.

3 0

3 years ago

Pls help me hurry I need help!!

Citrus2011 [14]

C. 9 square roots of 2

To answer this question, it's super important that you understand the ratio of sides for special triangles. This triangle in particular, a 45-45-90 triangle, has a ratio between the legs and hypotenuse of 1:1:

Since we are given the value of the hypotenuse, we know that the value of the two sides multiplied by $\sqrt{2}$ will be 18. Knowing this, we can write out an equation:

u* $\sqrt{2}$ = 18

u = $\frac{18}{\sqrt{2} }$

Multiply both sides by $\sqrt{2}$ in order to get rid of the root in the denominator:

u = $\frac{18*\sqrt{2}}{\sqrt{2} * \sqrt{2}}$

u = $\frac{18*\sqrt{2} }{2}$

u = 9 $\sqrt{2}$

If you'd like me to explain how I got to the answer any further, just ask!

- breezyツ

7 0

3 years ago

Sebastian went hiking near his house.The first trail he hiked on took him 4.5 miles away from his house. The second trail he hik

Sveta_85 [38]

Answer:

Sebastian is 3.8 miles away from his house.

Step-by-step explanation:

4.5 - 2.4 + 1.7

2.1 + 1.7

= 3.8

- Sebastian is 3.8 miles away from his house.

4 0

3 years ago

Read 2 more answers

Determine the value of w and x in the figure below. (Thanks for the help I really appreciate it!)

storchak [24]

Triangle HAM looks like an isosceles triangle, and we know that in an isosceles triangle 2 of the angles are the same.

so :
180 - 106 = 74 ( sum of the other 2 angles )
74/2 = 37 ( sum of angle HMA / HAM )

angles on a straight line add up to 180.
180-37=143 ( angle x )

since triangle YMH is also an isosceles,
180-37=143
143/2=71.5 ( angle w )

7 0

3 years ago

Simplify the expression -4x – 7+3 – 8x

julia-pushkina [17]

Answer:

-12x - 4

Step-by-step explanation:

if you can please mark brainlyist

5 0

2 years ago

Read 2 more answers