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antoniya [11.8K]
2 years ago
12

What is the x-coordinate of point D? Write the coordinate as a decimal. On a coordinate plane, point D is 2.5 units to the right

and 1.5 units down.
Mathematics
2 answers:
Darina [25.2K]2 years ago
8 0

Answer:

90% chance it is 2.5.

kirill115 [55]2 years ago
7 0

Answer:

2.5 right?

Warning: Answer may be wrong. I don`t know, it`s 11 A.M so please forgive me.

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GarryVolchara [31]
The\ volume\ of\ cylinder:V=\pi r^2 h\\\\r-radius;\ h-height\\---------------------------\\\\r=4cm;\ h=4cm\\\\therefore\\\\\boxed{V=\pi\cdot4^2\cdot4=64\pi\ (cm^3)}\leftarrow answer
5 0
2 years ago
Read 2 more answers
What is the equation of the midline for the function f (x)?<br><br> f (t) = 3 cos (x) – 2.5
zaharov [31]

Answer:

  y = -2.5

Step-by-step explanation:

For such a problem as this, you can replace all sine or cosine functions with their midline value of 0. Then you have ...

  f(x) = 0 -2.5

which simplifies to ...

  f(x) = -2.5

You can leave the equation like this, or write it as ...

  y = -2.5

_____

Perhaps you can see that the midline is the value of any constant added to a sine or cosine function.

6 0
2 years ago
If it takes you 40 minutes to go 20 miles downstream and then 60 minutes on the way back, what is the speed of the current?
IrinaK [193]

Answer:

Speed of Current = 5 miles per hour

Step-by-step explanation:

We know distance formula,

D = RT

Where

D is distance

R is rate

T is time

If we let speed of boat (assume) to be "x" and speed of current to be "c"

Then downstream rate is (with current) = x + c

Upstream rate is (against current) = x - c

40 mins to go 20 miles downstream, that means:

D = RT

20 = (x + c)(40)

and

60 minutes to go upstream, 20 miles, that means:

D = RT

20 = (x - c)(60)

Simplifying first equation:

40x + 40c = 20

Simplifying second equation:

60x - 60c = 20

Multiplying first equation by 60, we get:

60 * [40x + 40c = 20] = 2400x + 2400c = 1200

Multiplying second equation by 40, we get:

40 * [60x - 60c = 20] = 2400x - 2400c = 800

Now we add up both these equations:

2400x + 2400c = 1200

2400x - 2400c = 800

----------------------------------

4800x = 2000

x = 2000/4800 = 5/12

We need speed of current, that is "c", so we plug in the value of x into first equation and solve for c:

40x + 40c = 20\\40(\frac{5}{12}) + 40c = 20\\\frac{50}{3}+40c=20\\40c=20-\frac{50}{3}\\40c=\frac{10}{3}\\c=\frac{1}{12}

Speed of Current = 1/12 miles per minute

Since there is 60 minutes in an hours, that would be:

(1/12) * 60 = 5 miles per hour

Speed of Current = 5 miles per hour

3 0
3 years ago
What is the opposite of 56?What is the value of –(-4)?
kicyunya [14]

Answer:

-56;+4

Step-by-step explanation:

56 oopposite is -56

-(-4)=+4

4 0
2 years ago
Hey, I need help BAD!! I am doing PEMDAS. 7+(5times6)45+9<br><br><br> Please help me!! Thanks!
leonid [27]

Answer:1

<h2>1,366</h2>

Step-by-step explanation:

P - parenthsis

E - exponents

M - multiplication

D - division

A - addition

S - subtraction

<h3>STICK TO THE ORDER:</h3>

7 + 5 x (6 x 45) + 9 = 1,336 ( Not the pemdas order)

But,

<h3>7 + (5 x 6)45 + 9 = 1,366  is the correct order for using PEMDAS.</h3>
4 0
3 years ago
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