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aleksandr82 [10.1K]
2 years ago
10

Double a number decreased by 4

Mathematics
2 answers:
tatuchka [14]2 years ago
4 0

Answer:

Well, if you are doubling a number with a product that can be decreased by 4 to go back to your original number, the answer to your question is <u>8</u>.

Step-by-step explanation:

(4)(2 : double) = 8

8 - 4 = 4 (original number)

Wittaler [7]2 years ago
3 0

Answer:

2x-5 if u want u can substitute any other variables and constant

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Match the equation with its corresponding solution for x. 4x + 7 = 35
lyudmila [28]
Are you wanting to solve for x? If so:
4x + 7 = 35
We want to isolate the variable, so subtract 7 from both sides.  You will get:
4x = 28
Now, divide each side by 4 to get X by alone. This will give you:
x = 7
I hope this helped.
8 0
3 years ago
Can someone PLEASE explain cos and sin?!
DIA [1.3K]
Yes.

If you have a RIGHT triangle with a 29-degree angle in it, and you
divide the length of the leg adjacent to the angle by the length of the
hypotenuse, then it doesn't matter whether the triangle is drawn on
the head of a pin or on a piece of paper that reaches from the Earth
to the Moon, the quotient of (adjacent)/(hypotenuse) will always be
the same number ... about 0.875 .

That number is a property of every 29-degree angle, no matter the size
of the right triangle that it's in.  It's called the cosine of 29 degrees.

If you were to divide the leg opposite the 29-degree angle (instead of
the adjacent leg) by the length of the hypotenuse, you'd get a different
number ... about 0.485 .  That number is also a property of every 29-degree
angle, no matter the size of the triangle around it.  That one is called
the sine of 29 degrees.

I just used 29 degrees as an example.  Every angle has a sine and
a cosine, and a few other things too. 

If you have an angle, there's no easy way to calculate its sine or its
cosine.  You just have to look them up.  They're in tables in books,
or on line (just put 'cosine 29' in Google), and if you have a calculator,
they're probably on your calculator too.

You don't know yet what these are good for, or what you can do with
them.  That'll be coming up in math before you know it !

So the easiest answer to your question is:

Every angle has properties, characteristics, and aspects of its
personality that you never notice until you really get to know it. 
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the secant, and the cosecant.  They're all numbers, and every
angle has a full set of them !
6 0
3 years ago
Read 2 more answers
A book sold 41,600 copies in its first month of release. Suppose this represents 9.8% of the number of copies sold to date. How
oksano4ka [1.4K]

Answer:

480,247

Step-by-step explanation:

0.081 x = 38,900, so x (# sold to date) = 480,247 (rounded)

7 0
4 years ago
Please solve this problem for 12 points
liubo4ka [24]

Answer:

the blank is 7

Step-by-step explanation:

; )

5 0
3 years ago
Read 2 more answers
Select all the expressions that are equivalent to -2(4-3x)+(5x-2)
Anestetic [448]

Answer:

2. 11x - 10

3. -8 + 11x - 2

5. -8 + 6x + 5x -2

Step-by-step explanation:

To find the equivalent expressions, find the solution to the expression -2(4 - 3x) + (5x - 2). All expressions that are within the solving process <u>or</u> have the same solution are equal to the given expression.

-2(4 - 3x) + (5x - 2)

-2(4 - 3x) + 5x - 2

-8 + 6x + 5x - 2

-8 + 11x - 2

11x - 10

In this case, the equivalent expressions were within the solving process. From this, we can see that the equivalent expressions are 11x - 10, -8 + 11x - 2, and -8 + 6x + 5x - 2. Aka choices 2, 3, and 5.

hope this helps!

8 0
2 years ago
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