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2 years ago

Find the exact value of x

Mathematics

1 answer:

Olin [163]2 years ago

5 0

Answer:

7.07

Step-by-step explanation:

5sin90=xsin45

5/sin45=7.07

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A rocket is launched from the top of a 70 foot cliff with an initial velocity of 130 feet per second. The height, h, of the rock

lana [24]

Answer:

The answer is 7.8 seconds.

Solve for t in the equation using the Quadratic formula.
Eliminate the negative solution and the positive solution is your answer.

Please Mark Brainliest If This Helped!

6 0

2 years ago

The population of a certain country is approximated by the following equation, where x is the number of years since 1980 and P i

marissa [1.9K]

Answer:

In 2010 the population become 206,123,000.

Step-by-step explanation:

Consider the provided equation.

$P=2.748x + 126.199$

Where P represents the population in millions.

We need to determine the year in which the country had population of 206,123,000.

As P is in millions so divide 206,123,000 by one million.

$\frac{206,123,000 }{1,000,000}= 206.123$

Substitute P = 206.123 in above equation.

$206.123=2.748x + 126.199$

$79.924=2.748x$

$x=\frac{79.924}{2.748}$

$x=29.08$

30 year from 1980 the population become 206,123,000.

In 2010 the population become 206,123,000.

6 0

3 years ago

If x and y in the equations

Brums [2.3K]

We can let
a = 1/(x-1)
b = 1/(y+2)
and rewrite the equations as
2a - b = 10
a + 3b = -9
Using the first to write an expression for b, we get
b = 2a - 10
Substituting this into the second equation gives
a + 3(2a -10) = -9
7a -30 = -9 . . . . . . . . simplify
7a = 21 . . . . . . . . . . .add 30
a = 3
b = 2·3 - 10 = -4

Now, we can find x and y.
   3 = 1/(x -1)
   x - 1 = 1/3
   x = 1 1/3 = 4/3

  -4 = 1/(y +2)
  y +2 = -1/4
  y = -2 1/4 = -9/4

Then the desired sum is
  x + y = 4/3 -9/4 = (16 -27)/12
x + y = -11/12

The appropriate choice is ..
c. -11/12

5 0

3 years ago

Write the point-slope form of an equation of the line through the points (-7, 7) and (4, 1).

defon

Answer:

y − 7 = − 6 /11 ⋅ ( x + 7 )

Step-by-step explanation:

Find the point-slope form.

Point-slope formula: y-y₁=m(x-x₁)

3 0

2 years ago

Write 14/25 29/50 53/100 13/20 and 3/5 in order from greatest to least

Alex73 [517]

13/20,3/5,29/50,14/25,53/100

7 0

3 years ago