Ask question

Ask question

All categories

3 years ago

11

Two cars are 100 km spart One car is traveling at 55 km/h and the other car is traveling at 45 km/h. If they start at the same t

ime and are driving toward each other, how long will it take them to meet? 3 hours 4 hours 5 hours 6 hours

1 answer:

Schach [20]3 years ago

5 0

Answer:

I thinks they take 5 hours to meet each other

You might be interested in

11. The student council is comparing prices for their semi-formal dance. They compare banquet. Hall A charges $40 per person. Ha

Natalka [10]

Answer:

TC (A) = 40x , TC (B) = 500 + 20x

Step-by-step explanation:

Let the number of students be = x

Hall A Total Cost

Relationship Equation, where TC (A) = f (students) = f (x) 40 per person (student) = 40x

Hall B Total Cost

Relationship Equation, where TC (B) = f (students) = f (x) 500 fix fee & 20 per person (student) = 500 + 20x

4 0

3 years ago

A Chinese restaurant offers buffet takeout for $4.99 per pound. How much does your takeout meal cost?

Degger [83]

Answer:

$7.68

Step-by-step explanation:

4.99/0.65 = $7.68

Hope it helps!

4 0

3 years ago

Bonnie purchased a 30 ounce package of chocalte chunk cookies for $2.40.What is the cost per ounce

Sladkaya [172]

.08 cents per ounce, because 2.40 ÷30 =.08

8 0

3 years ago

Simplify complex numbers:add n subtract complex numbers<br><br>(3-5i) - (8-2i)

IgorLugansk [536]

Answer:

-5-3i

Step-by-step explanation:

3-8= -5

-5-(-)2i

-5+2i=-3i

5 0

3 years ago

10# A consumer advocacy group is doing a large study on car rental practices. Among other things, the consumer group would like

ella [17]

ANSWER:

104

STEP-BY-STEP EXPLANATION:

Given:

Standard deviation (σ) = 700

Confidence level = 95%

Mean error (Eμ) = 135

We have for a confidence level of 95%:

$\begin{gathered} \alpha=100\%-95\%=5\%=0.05 \\ \\ \alpha\text{/2}=\frac{0.05}{2}=0.025 \\ \\ \text{ The corresponding Z value for \alpha/2 = 0.025 is as follows:} \\ \\ Z_{\alpha\text{/2}}=1.96 \end{gathered}$

Now, we calculate the minimum value of the sample size as follows:

$\begin{gathered} n=\left(\frac{Z_{\alpha\text{/2}}\cdot\sigma}{E}\right)^2 \\ \\ \text{ We replacing:} \\ \\ \:n=\left(\frac{1.96\cdot 700}{135}\right)^2 \\ \\ \:n=103.2858\cong104 \end{gathered}$

The minimum sample size needed is 104

3 0

1 year ago