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3 years ago

Need help with these two questions

Mathematics

1 answer:

dlinn [17]3 years ago

8 0

Answer:

The length for the first one is 97 degrees

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A new car is purchased for 15700 dollars. The value of the car depreciates at 7.5% per year. To the nearest year, how long will

devlian [24]

Answer:

10100=15700(1-0.075)^x

10100=15700(0.925)^x

divide both sides by 15700

0.925^x=101/157

convert decimal

(37/40)^x=101/157

take the log

x= log 37/40 (101/157)

x= 5.65824

7 0

3 years ago

-3,0,3,6,9 arithmetic sequence

astraxan [27]

Answer:

Adding 3

Step-by-step explanation:

-3 + 3 = 0

0 + 3 = 3

3 +3 = 6

6 + 3 = 9

4 0

3 years ago

David cast a shadow 42" long at the same place and time in Emma cast a shadow 28" long. David is 66" tall. What is Emma's height

Nikolay [14]

ANSWER

Emma is 44" tall

EXPLANATION

We have that David cast a shadow 42 inches long and he is 66 inches tall.

At that same place and time, Emma cast a shadow of 28 inches.

Since they are at the same spot and time, we can conclude that the ratio of their height to shadow must be the same.

Let Emma's height be x.

The ratio of David's shadow to height is:

42 : 66 or 42 / 66

For Emma, it is:

28 : x or 28 / x

That means that:

$\begin{gathered} \frac{42}{66}\text{ = }\frac{28}{x} \\ \text{Solve for x by cross-multiplying:} \\ 42\cdot\text{ x = 66 }\cdot\text{ 28} \\ x\text{ = }\frac{66\cdot\text{ 28}}{42} \\ x\text{ = 44 inches} \end{gathered}$

So, Emma is 44" tall.

3 0

11 months ago

If a designer sold 2,000 units of a dress with total sales of $190,000, what was the average price of the garment?

Lostsunrise [7]

Answer:

$95

Step-by-step explanation:

We can divide 190,000 by 2,000, since we're assuming they all cost the same. This gets us to our answer, 95. Therefore, each garment cost $95 on average.

5 0

3 years ago

HELP ME PLEAEEEE .HOW TO SOLVE IT

Mrac [35]

You need to clarify whether you need the x or the y or both

4 0

3 years ago