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4sin−1(x)=π WHATS X=IF YOU MEANT: 4sin^-1(x)=pi, then:

Solve for x:
4 sin^(-1)(x) = pi

Divide both sides by 4:
sin^(-1)(x) = pi/4

Take the sine of both sides:
Answer: |  x = 1/sqrt(2)

This is a calculator. Please use it. 

700*1900 = 1330000

Solve for x:
-4 sin(1) x = pi

Divide both sides by -4 sin(1):
Answer: |  
 | x = -1/4 (pi csc(1))

If the three sides of a right triangle are a, b, and c with a and b the two sides that include the right angle and c the hypotenuse and if the two sides have lengths 3 and 4,

then  c²  =  a² + b²     --->     c²  =  3² + 4²     --->   c²  =  9 + 16     --->     c²  =  25     --->     c  =  5

I am confused by the equal sign. Did you enter an "=" sign instead of a "+" sign (they are both on the same key)?

If the problem is to find the remainder of (4x⁴ + 3x³ + 2x² + 1) / (x - 1) by direct substitution, you need to find f(1):

f(x) = 4x⁴ + 3x³ + 2x² + 1   --->   f(1) = 4(1)⁴ + 3(1)³ + 2(1)² + 1  = 4 + 3 + 2 + 1  =  10   --->  so the remainder is 10.

Notice that you need to find f(1), NOT f(-1).

The rule:  if the problem has division by x - a, find f(a); if the problem has division by x + a, find f(-a).

depends what it is equal to

If the problem is to factor  2y² + 17y + 35, try this:  (2y + 7)(y + 5).

24.i think but i think im right. i didmental math

I think that you need to give us more information.

A ratio is a comparison of two sizes, written as a decimal.

For example, if one person weighs 180 pounds and another person weighs 120 pounds, the ratio of the weight of the heavier person to the weight of the lighter person is  180:120  or  180/120  =>  3/2  or  3:2.

Colons are frequently used to represent ratios.

Even though the final answer to the example above is 3:2  or  3/2, the answer is never written as a single decimal. Therefore, 1.5 is NOT a proper answer although  1.5:1 would be. (Frequently, ratios are written with the last number being 1.)

Also, since 3:2 is the answer to the ratio of the heavier person to the lighter person, 2:3 is the answer to the ratio of the lighter person to the heavier person.

5.5 lbs.= -?-oz.

There are 16 oz in 1 lbs, so just multiply 16 by 5.5.

Replace each x in the formula by x+3 and simplify:

If f(x) =  x^2-4x+2 then f(x+3) = (x+3)^2 -4(x+3) + 2 →  x^2 + 6x + 9 -4x - 12 + 2 →  x^2 + 2x -1

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infinity times infinity = infinity

Statistics.

Hajar 50 workers from one Egyptian villages to work abroad in 1987 and the average age when migration 27 if all returnee village in 1991, how much is the average age when they return to their village and how the average age in 1999?

4 years passed, so they were all 4 years older.

The average age became 27+4 = 31

مرت 4 سنوات، حيث كانت كل 4 سنوات.

وأصبح متوسط العمر 27 + 4 = 31

y-9/x=3/5

\(y-\frac{9}{x}=\frac{3}{5}\\ y-\frac{9}{x}+\frac{9}{x}=\frac{3}{5}+\frac{9}{x}\\ y=\frac{3}{5}+\frac{9}{x}\\ or\\ y=\frac{3x+45}{5x}\)

well if that is the letter x then

-2x-2x-2x-3 =  -6x-3

If it is a times sign than it is   +24

I do not understand your question.  Maybe you can rephrase it?