All categories

2 years ago

Which of the following numbers could have been rounded to 23.5? Explain how

Mathematics

1 answer:

Naddika [18.5K]2 years ago

5 0

Answer:

23.49

Step-by-step explanation:

You might be interested in

10k-10-6a+4a+a+0+0+0

cluponka [151]

Answer:

simplified 10k-1a-10

Step-by-step explanation:

Simplified

5 0

3 years ago

Read 2 more answers

Square ABCD has a side length of 10 centimeters. Find the area of the square. Type a numerical answer in the space provided. Do

laila [671]

Answer:

100

Step-by-step explanation:

Multiply two of the side lengths

10×10 = 100

3 0

3 years ago

El que me resuelva esta tarea le doy corona .-.

shusha [124]

Answer:

Ok espera busco y t digo si?

3 0

2 years ago

In a study of wait times at an amusement park, the most popular roller coaster has a mean wait time of 17.4 minutes with a stand

Ann [662]

Answer: A: 0.0031

Step-by-step explanation:

Given : In a study of wait times at an amusement park, the most popular roller coaster has a mean wait time of 17.4 minutes with a standard deviation of 5.2 minutes.

i.e. $\mu=17.4$ and $\sigma=5.2$

We assume that the wait times are normally distributed.

samples size : n= 30

Let x denotes the sample mean wait time.

Then, the probability that the mean wait time is greater than 20 minutes will be :

$P(x>20)=1-P(x\leq20)\\\\=1-P(\dfrac{x-\mu}{\dfrac{\sigma}{\sqrt{n}}}\leq\dfrac{20-17.4}{\dfrac{5.2}{\sqrt{30}}})\\\\=1-P(z\leq2.74)\ \ [\because\ z=\dfrac{x-\mu}{\dfrac{\sigma}{\sqrt{n}}}]\\\\=1-0.9969\ \ [\text{ By z table}]\\\\=0.0031$

Hence, the probability that the mean wait time is greater than 20 minutes.= 0.0031

Thus , the correct answer is A: 0.0031 .

5 0

3 years ago

Question 15 of 25

Slav-nsk [51]

Answer:

Step-by-step explanation:

Polynomials are factored after they are set equal to 0. This i because the factors of the polynomial are also known as the x-intercepts, and x-intercepts exist where y = 0. Therefore, if the factors of the polynomial are

(x + 8)(x + 4) = 0, then by the Zero Product Property,

x + 8 = 0 so x = -8 or

x + 4 = 0 so x = -4. Choice A.

5 0

3 years ago