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2 years ago

Which choices are equivalent to the expression? √(5) x √(20)

Mathematics

1 answer:

statuscvo [17]2 years ago

8 0

Answer:

10 is the answer

Step-by-step explanation:

You have to multiply with whats inside the roots. you would have $\sqrt{5} times \sqrt{20} will give you \sqrt{100} which is 10$

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Which algebraic expression is a product with the factor of 5

alexgriva [62]

Answer:

Step-by-step explanation:

5(y - 6) means 'Multiply the difference between y and 6 by 5'.

8 0

2 years ago

Another one lol(picture)

Andreyy89

Look up the law of sines, I suggest Khan Academy. It is better if you know how to do it, it is very useful.

7 0

2 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

2 years ago

An employee at a homemade wooden toy store earned $860 over the past week. The employee needs to pay 14% for Federal Income Tax

Sindrei [870]

Answer:
$713.8

Explanation:
14%of 860 = 120.4

3% of 860 = 25.8

so, subtract the sum of the above 2 values from 860.

860 - (120.4+25.8) = 860-146.2 = 713.8

Hope this helps

4 0

2 years ago

Read 2 more answers

Which rule describes the transformation that was used to form parallelogram A'B'C'D'

Ainat [17]

The answer would be c because you went left 10 and when you go left its always negative.Then you went down 3 .When going down its also negative

3 0

2 years ago