According to the question statement, the total sum of students is 221, which includes the students that ride on bus and the students that ride in a van.

The students that ride in a van are five, the students that ride on bus are 6 times s which is the product of the number of buses and the number of students that are on each bus.

Write all this information into an equation, this way:

$6s+5=221$

Now, solve the equation for s to find the number of students that are on each bus.

$\begin{gathered} 6s+5=221 \\ 6s=216 \\ s=\frac{216}{6} \\ s=36 \end{gathered}$

There are 36 students on each bus.

3 0

2 years ago

In a survey, 18 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped

schepotkina [342]

Answer: 99% confidence interval would be (45.74,54.26).

Step-by-step explanation:

Since we have given that

N = 18

Mean = $50

Standard deviation = $7

At 99% confidence level, z = 2.58

So, Interval would be

$\bar{x}\pm z\dfrac{\sigma}{\sqrt{n}}\\\\=50\pm 2.58\times \dfrac{7}{\sqrt{18}}\\\\=50\pm 4.26\\\\=(50-4.26,50+4.26)\\\\=(45.74,54.26)$

Hence, 99% confidence interval would be (45.74,54.26).

8 0

4 years ago

It takes Mara 50 minutes to walk to her friends house 1 2/3 miles away. What is her walking pace in miles per hour?

Marizza181 [45]

(1 2/3) / 50 = x/60
cross multiply
50x = 60 * 5/3
50x = 100
x = 100/50
x =her walking pace is 2 miles per hr

4 0

3 years ago