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tatiyna
3 years ago
15

What is the value of X

Mathematics
2 answers:
enyata [817]3 years ago
5 0

If x=6 and y=3 is 9_______________________________________

satela [25.4K]3 years ago
5 0

Answer:

x = 2

Step-by-step explanation:

The product of the external part times the entire secant of one secant is equal to the external part times the entire secant of the other secant, that is

(x + 4)(x + 5) = (x + 1)(x + 12) ← distribute factors on both sides

x² + 9x + 20 = x² + 13x + 12 ( subtract x² from both sides )

9x + 20 = 13x + 12 ( subtract 13x from both sides )

- 4x + 20 = 12 ( subtract 20 from both sides )

- 4x = - 8 ( divide both sides by - 4 )

x = 2

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A random number is selected from the interval [6.35, 10]. Find the probability that the number is within a distance of 0.25 from
exis [7]

Let <em>X</em> be a random number selected from the interval. Then the probability density for the random variable <em>X</em> is

f_X(x)=\begin{cases}\dfrac1{10-6.35}=\dfrac1{3.65}\approx0.2740&\text{if }6.35\le x\le 10\\0&\text{otherwise}\end{cases}

8 and 10 are the only even integers that fit the given criterion (6 is more than 0.25 away from 6.35), so that we're looking to compute

P(|<em>X</em> - 8| < 0.25) + P(|<em>X</em> - 10| < 0.25)

… = P(7.75 < <em>X</em> < 8.25) + P(9.75 < <em>X</em> < 10.25)

… = P(7.75 < <em>X</em> < 8.25) + P(9.75 < <em>X</em> < 10)

(since P(<em>X</em> > 10) = 0)

… = 0.2740 (8.25 - 7.75) + 0.2740 (10 - 9.75)

… = 0.2055

6 0
3 years ago
Nora jogs 4 1/4miles on Monday. She jogs 1 1/2 fewer miles on Tuesday. Write and evaluate an addition expression to find how man
MakcuM [25]

Answer:

Equation: 4 1/4 + 1 3/4

Evaluation: 5 3/4

Step-by-step explanation:

So, Nora jobs 4 1/4 miles on Monday, which is 1 1/2 miles fewer than on Tuesday.

If this was 1.5 fewer miles, we need to add 1 1/2 and 4 1/4  to get our answer

We change the denominator on 1 1/2 to be 4. So, we multiply both sides by 2 and get 1 2/4

4 1/4 + 1 2/4 = 5 3/4

5 0
3 years ago
What is the value of x? 0.9(x 1.4)−2.3 0.1x=1.60.9(x 1.4)−2.3 0.1x=1.6 enter the answer as a decimal
Fantom [35]
0.9(x + 1.4) - 2.3 + 0.1x = 1.6
0.9x + 1.26 - 2.3 + 0.1x = 1.6
x - 1.04 = 1.6
x = 1.6 + 1.04 = 2.64
x = 2.64
7 0
3 years ago
Read 2 more answers
Given the functions f(x) = 3(0.56)^x and g(x) = 6(4)^x
rodikova [14]
A)  f(x) is decreasing because the base is less than 1.
      0.56 is close to 0.5, so its like saying that you are taking half each time, therefore the value is getting smaller.

g(x) is increasing because the base is greater than 1.
you are multiplying by 4 each time, making the value bigger.


B )  The y-intercept is where x=0.
      Anything to the '0' power is 1. Therefore the y-intercept is equal to the coefficient in front of each function.
    f(x) = 3 ,   g(x) = 6


C)  Just plug in x=4 to each function in a calculator.
 f(4) = 0.295
g(4) = 1536
7 0
4 years ago
The amplitude of y = -2 sin 3x is
Rzqust [24]

Answer:2

Step-by-step explanation:

5 0
3 years ago
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