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NeTakaya
3 years ago
5

the price of a phone on sale was increased from $80 to $120. By what percentage was the price of the phone increased?

Mathematics
2 answers:
Klio2033 [76]3 years ago
4 0

Answer:

50% increase

Step-by-step explanation:

120 - 80 = 40

40 = 50% of 80

Katen [24]3 years ago
3 0

Answer:

50%

Step-by-step explanation:

120 / 80 = 1.5

1.5 x 100 = 150%

150% - 100% = 50%

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If the angle of elevation of the sun is 61.7° when a building casts a shadow of 56.5 feet, what is the height of the building ro
maksim [4K]

SOLUTION

Let us use a simple diagram to interprete the question

In the diagram above, the dark stuff below represents the shadow and the rectangular bar represents the building. I have labelled the height of the building as h.

So we will use the right-angled triangle formed to find h

As we can see h represents the opposite side and 56.5 feet represents the adjacent side of the right-angle triangle. So we will use TOA

\text{TOA tan }\theta=\frac{opposite}{\text{adjacent}}

So we have

\begin{gathered} \text{ tan }\theta=\frac{opposite}{\text{adjacent}} \\ \text{ tan }61.7\degree=\frac{h}{56.5} \\ 1.8572015=\frac{h}{56.5} \\ \text{cross multiplying, we have } \\ h=1.8572015\times56.5 \\ h=104.931887 \end{gathered}

Hence the answer is 104.9 feet to the nearest tenth

4 0
10 months ago
I need help with this ​
gtnhenbr [62]
So what are we trying to find the reduced fraction or inverse operation
5 0
3 years ago
Which Mean Absolute Deviation represents more consistency? 15.2 or 10.9
Firdavs [7]

Answer:

10.9

Step-by-step Explanation:

The Mean Absolute Deviation of a given data set tells us how far apart, on average, each data value is to the mean of the data set.

The smaller the Mean Absolute Deviation of a given data set is, the closer each data value is to the mean. This also implies less variability of the data set.

Invariably, the smaller the M.A.D, which connotes less variability, the more consistent the data set is.

Therefore, a M.A.D of 10.9 represents more consistency than a M.A.D of 15.2

3 0
3 years ago
15. Solve: 21-3y=36-6y<br> A) 19<br> B) 5<br> C) -5/3<br> D) -19
juin [17]
<span>21-3y=36-6y        +3y
21 = 36 - 3y          -36
-36+21 = -3y
- 15 = - 3y              ÷ -3
5 = y

Choice: B


</span>
6 0
3 years ago
Read 2 more answers
Finding the quotient of this answer
Mekhanik [1.2K]
30/36 or 5/6 because to divide by a fraction, you multiply by its reciprocal.To find the reciprocal of a fraction you can simply just flip the fraction so 6 / (5/6) is equal to 6*(5/6).This is equal to (6*5)/(6*6) or 30/36 or 5/6.
5 0
3 years ago
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