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Basile [38]
3 years ago
6

I really need help i’m going to fail so answer if you can ! <3

Mathematics
1 answer:
Volgvan3 years ago
8 0

Answer:

110

Step-by-step explanation:

you place 30 in the place of X, and it becomes 4×30-10. in PEMDAS, multiplication goes first and 4×30=120. 120-10=110

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A certain book is for sale in both Belize and Brazil. In Belize, it sells for 80.39 Belize dollars. In Brazil, it sells for 63.6
bixtya [17]
A book is sold in Belize for 80.39 Belize dollars.
In Brazil, it sells for 63.65 Brazilian reals.

The exchange rate of US Dollars to Belize Dollars is 1:1.9246
<span>The exchange rate of US Dollars to Brazilian Real is 1:1.7880
</span>
If we convert the two into dollars,
Belize Dollars 
1 : 1.9246 = X : <span>80.39 
1.9246X = 80.39
X = $ 41.77 

</span>Brazilian Real
1 : 1.7880 = X : <span>63.65 </span><span> 
</span>1.7880X = <span>63.65 </span><span>
X = $ 35.60
</span>
Difference = $ 41.77 - $ 35.60
Difference = $ 6.17

So, in Belize the book is more expensive by $ 6.17
7 0
3 years ago
A giant hummingbird can flap its wings at a rate of 13 flaps per second, how many times
antoniya [11.8K]

Answer:

780 flaps per second

Step-by-step explanation:

just multiply 13×60

8 0
2 years ago
HAL SPENT 5/4 HOUR READING EACH DAY FOR 7 DAYS. HOW MUCH TOTAL DID HE SPEND READING?
kobusy [5.1K]

Answer:

35/4 hours or 8.75 Hours

Step-by-step explanation:

Take the amount of time he reads each day times the number of days to get your answer

7 0
3 years ago
​For the two right triangles above, explain why a/8=x/12 . ​ ​What ​trigonometric ratio is also equal to the two given ratios?
frutty [35]

Answer:

sin trigonometry ratio

Step-by-step explanation:

Given

See attachment for triangles

Required

Explain why \frac{a}{8} = \frac{x}{12}

From the attached diagram, both triangles are similar triangles because

(1) the second triangle is a dilation of the first triangle by a ratio of 1.5

i.e

k = \frac{12}{8}

k = 1.5

(2) They have angle 30 degrees, and have their right angles located at the same point

In the first triangle, the sine of 30 degrees is represented as:

sin(30) = \frac{Opp}{Hyp}

This gives:

sin(30) = \frac{a}{8}

In the second triangle:

sin(30) = \frac{Opp}{Hyp}

So:

sin(30) = \frac{x}{12}

By comparison:

sin(30) = sin(3)

Hence:

\frac{a}{8} = \frac{x}{12}

8 0
2 years ago
Help me ASAP!!!!!!!!!!
PilotLPTM [1.2K]
0.05 is 1/10 the value of 0.5
6 0
3 years ago
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