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arlik [135]
2 years ago
7

270 american dollar and recevied 3000 pesos when he returned from mexico he had 100 pesos left. how many will he recevie when he

exchanges these pesos for dollars
Mathematics
1 answer:
AURORKA [14]2 years ago
7 0
To solve this problem we can use simple proportion
If 
270$ -------------------------3000 pesos
x $  ---------------------------100 pesos               (x$ means that we dont know how much)
Now we crossmultiplying to get proportion
x*3000=270*100
Now we just to solve eq
3000x=27000  /:3000
x=27000:3000
x=9$ - its the result
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A botanist predicts that the height of a certain tree will increase by 2% every year. If the height of the tree is now 50 feet,
Neporo4naja [7]
To answer this kinda question, we gotta tackle it year by year. 
By the end of the first year, the tree would grow by 2% = 102% of its original height.
Year 1: 102% x 50 = 51 feet
Year 2: 103% x 51 = 52.02 feet

Hope I helped!! xx
4 0
3 years ago
How many solutions are there to the equation below? <br><br> 8x-10=3(2x+5)+2x
pishuonlain [190]

Answer:

No solutions

Step-by-step explanation:

8x - 10 = 3(2x + 5) + 2x

8x - 10 = 6x + 10 + 2x

8x - 10 = 8x + 10

4 0
2 years ago
Based on this description, what conclusion did outsiders most likely draw about West African leaders after meeting Mansa Musa?
katrin2010 [14]

Answer:

A

Step-by-step explanation:

8 0
1 year ago
A human resource manager wants to see if there is a difference in the proportion of minority applicants who get the job and the
mash [69]

Answer:

Error Bound = 0.04

Step-by-step explanation:

Whenever we want to estimate parameter from a subset (or sample) of the population, we need to considerate that your estimation won't be a 100% precise, in other words, the process will have a random component that prevents us from always making the exact decision.

With that in mind, the objective of a confidence interval is to give us a better insight of where we expect to find the "true" value of the parameter with a certain degree of certainty.

The estivamative of the true difference between proportions was -0.19 and the confidence interval was [-0.23 ; -0.15].

The question also defines the error bound, as the right endpoint of the confidence interval minus the sample mean difference, so it's pretty straight foward:

Error Bound = -0.15 -(-0.19) = -0.15 + 0.19 = 0.04

The interpretation of this would be that we expect that the estimative for the difference of proportions would deviate from the "true" difference about \pm 0.04 or 4%.

6 0
3 years ago
Solve x − 5y = 6 for x.
pentagon [3]

Answer:

All real numbers

Step-by-step explanation:

Solve a system of equations by elimination

With the equation given, you can solve for y to get: y = \frac{1}{5}x - \frac{6}{5}

Then, substitute this value in on the equation.

x - 5(\frac{1}{5}x - \frac{6}{5}) = 6

x - x + 6 = 6

6 = 6

The solution is all real numbers

8 0
3 years ago
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