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3 years ago

Estimate 19.41 - 6.254 by first rounding each number to the nearest tenth.

Mathematics

1 answer:

nordsb [41]3 years ago

4 0

Answer:

13.1

Step-by-step explanation:

19.41 => 19.4

6.254 => 6.3

so, 19.4 - 6.3 = 13.1

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What is the value of 1/3x (2) + 2 when x=3

Svetlanka [38]

Final answer: 5
Step by step process:
You can make the equation a little simpler by putting in the 3 for x
btw I show exponents with this ^
(3)^2/3 + 2

3^2=3*3=9

Now you have 9/3 + 2 and you keep simplifying

9/3=3
3+2=5
Final answer: 5

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3 years ago

Sholpan [36]

Answer:

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4 years ago

Determine the axis of symmetry of a parabola whose graph is given below. Give your answer in the form X equals H

sergey [27]

Answer:

x = -3

Step-by-step explanation:

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3 years ago

Which linear inequality is represented by the graph?

larisa [96]

Answer:

y>3x-4

Step-by-step explanation:

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3 years ago

Suppose the time a child spends waiting at for the bus as a school bus stop is exponentially distributed with mean 7 minutes. De

Gala2k [10]

Answer:

The probability that the child must wait between 6 and 9 minutes on the bus stop on a given morning is 0.148.

Step-by-step explanation:

Let the random variable X represent the time a child spends waiting at for the bus as a school bus stop.

The random variable X is exponentially distributed with mean 7 minutes.

Then the parameter of the distribution is, $\lambda=\frac{1}{\mu}=\frac{1}{7}$ .

The probability density function of X is:

$f_{X}(x)=\lambda\cdot e^{-\lambda x};\ x>0,\ \lambda>0$

Compute the probability that the child must wait between 6 and 9 minutes on the bus stop on a given morning as follows:

$P(6\leq X\leq 9)=\int\limits^{9}_{6} {\lambda\cdot e^{-\lambda x}} \, dx$

$=\int\limits^{9}_{6} {\frac{1}{7}\cdot e^{-\frac{1}{7} \cdot x}} \, dx \\\\=\frac{1}{7}\cdot \int\limits^{9}_{6} {e^{-\frac{1}{7} \cdot x}} \, dx \\\\=[-e^{-\frac{1}{7} \cdot x}]^{9}_{6}\\\\=e^{-\frac{1}{7} \cdot 6}-e^{-\frac{1}{7} \cdot 9}\\\\=0.424373-0.276453\\\\=0.14792\\\\\approx 0.148$

Thus, the probability that the child must wait between 6 and 9 minutes on the bus stop on a given morning is 0.148.

6 0

3 years ago