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olya-2409 [2.1K]
3 years ago
5

What’s the correct answer for this?

Mathematics
1 answer:
photoshop1234 [79]3 years ago
3 0

Answer:

B:

Step-by-step explanation:

IN THE ATTACHED FILE

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Please help, Brainliest if correct!!!
Lubov Fominskaja [6]

See the attached pic below

In the triangle formed by the statue and the boat, we have

\tan23^\circ=\dfrac x{110+y}

and

\tan38^\circ50'=\dfrac xy

We can solve either equation for y, then substitute that into the other equation. First, let's abbreviate t_1=\tan23^\circ and t_2=\tan38^\circ50'. Then

y=\dfrac x{t_2}

\implies t_1=\dfrac x{110+\frac x{t_2}}

\implies\dfrac{t_1}{t_2}=\dfrac x{110t_2+x}

\implies(110t_2+x)\dfrac{t_1}{t_2}=x

\implies110t_1=\left(1-\dfrac{t_1}{t_2}\right)x

\implies x=\dfrac{110t_1}{1-\frac{t_1}{t_2}}=\dfrac{110t_1t_2}{t_2-t_1}

\implies\boxed{x\approx99}

7 0
4 years ago
The probability that a lab specimen contains high levels of contamination is 0.15. A group of 4 independent samples are checked.
Lady bird [3.3K]

Answer:

0.5220

Step-by-step explanation:

Since the probability of contamination is 0.15, the probability of no contamination is 1 - 0.15 = 0.85

The probability that they are all contaminated will be 0.85 * 0.85 0.85 * 0.85 = 0.52200625

This is 0.5220 to four decimal

5 0
3 years ago
Which is greater 7500,000 m or 750 km
marta [7]

Step-by-step explanation:

both are equal

pls Mark brainliest

5 0
3 years ago
Charlie reads quickly . He reads 1and3/7 pages every 2/3 minutes.How many pages does he read pre minute?
SVETLANKA909090 [29]
Hello there!

First, we need to admit that math is a hard subject. So, how do we handle hard stuff? We find an easy way. Right?

Well same goes here. They give the fractions to drive us crazy. Let's find the easiest way...

The easiest way is to turn them into decimals.
1 3/7 = 1.42 which is the amount of pages he reads
2/3 = 0.67 minute.

The are asking us how many pages does he reads per minute.

So we gonna say:
Charlie reads 1.42 pages ......> 0.67
Charlie reads x pages.............> 1minute

Cross multiply

0.67 * x = 1 * 1.42
0.67x = 1.42
x = 1.42/0.67
x = 2.11

So, Charlie reads 2.11 pages in 1 minute.


I hope this helps. Please let me know if you have questions about the answer.

Thanks!


5 0
4 years ago
Which of the following lines bets fits the data shown in the scatter plot?
tia_tia [17]
Labe b dues the dots are closer to it
4 0
3 years ago
Read 2 more answers
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