A new cell phone cost $85, and the sales tax is 9%. What is the amount of the sales tax

Mathematics

1 answer:

elixir [45]2 years ago

4 0

The sales tax is $7.67

In total, with the sales tax, the phone would be $92.65

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2) The 114 students in the ninth grade at Mathville High are going on a field trip to the science

9966 [12]

Answer:

4 buses

Step-by-step explanation:

40b=114+114/10

40b=114+11.4

40b=125.4

b=3.135

The answer is 4 because you have to round up to get the remaining people.

5 0

2 years ago

Answer the following questions about the problem above. Write in complete sentences to get full credit.

nexus9112 [7]

Note: Since you missed to add the image, so after a little research, I was able to find the image related to this question, which hopefully serves the purpose to clear your concept. The image is attached below.

Step-by-step explanation:

Part 1) What is the slope for section "d" of Mrs. Washington's commute

Calculating the slope for section "d" of Mrs. Washington's commute:

Slope of the section d $=\frac{y_{2} - y_{1}}{x_{2} - x_{1}}$

$\frac{6 - 0}{32 - 20}=\frac{1}{2}=0.5$

Part 2) What does it mean that the slope is negative in context of the problem?

The slope is being negative as it is moving downward from the left. In negative slop, the value of x increase, while the vale of y decreases. In positive slop, the value of both x and y increases.

Part 3) Why are the slopes different over different intervals?

Slopes are different at different intervals as the distance covered in time taken for each part of the given journey are different, also the speed is not the same for each interval.

As the speed can be calculated as

$Speed\:=\:\frac{distance}{time}\:$