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Lady_Fox [76]
3 years ago
13

M/15-5=m/15+5+0.5 what is m the distance between the two communities

Mathematics
1 answer:
Rzqust [24]3 years ago
4 0

Answer:

Option C

10 miles

Step-by-step explanation:

We're given that \frac {m}{15-5}=\frac {m}{15+5}+0.5 and the first thing will be to simply the denominators since 15-5=10 and 15+5=20 then the above equation is written as \frac {m}{10}=\frac {m}{20}+0.5

Bringing like terms together then

\frac {m}{10}-\frac {m}{20}=0.5

Simplifying then

\frac {m}{20}=0.5

By cross multiplication then m=0.5*20=10

Therefore, m=10 miles

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out of some students appeared in an examination 80% passed in mathematics 75% passed in english and 5% failed in both subjects i
Advocard [28]

Answer:

5000 students appeared in the examination.

Step-by-step explanation:

We solve this question using Venn probabilities.

I am going to say that:

Event A: Passed in Mathematics

Event B: Passed in English.

5% failed in both subjects

This means that 100 - 5 = 95% pass in at least one, which means that P(A \cup B) = 0.95

80% passed in mathematics 75% passed in english

This means that P(A) = 0.8, P(B) = 0.75

Proportion who passed in both:

P(A \cap B) = P(A) + P(B) - P(A \cup B)

Considering the values we have for this problem

P(A \cap B) = P(A) + P(B) - P(A \cup B) = 0.8 + 0.75 - 0.95 = 0.6

3000 of them were passed both subjects how many students appeared in the examination?

3000 is 60% of the total t. So

0.6t = 3000

t = \frac{3000}{0.6}

t = 5000

5000 students appeared in the examination.

4 0
3 years ago
The price of lettuce was $1.25 one week and $1.50 the next week.  Find the percent of increase.
melomori [17]
So the lettuce went up by 0.25 or 25c, now, if we take 1.25 to be the 100%, how much is 0.25 in percentage off of it?

\bf \begin{array}{ccllll}
amount&\%\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
1.25&100\\
0.25&x
\end{array}\implies \cfrac{1.25}{0.25}=\cfrac{100}{x}\implies x=\cfrac{0.25\cdot 100}{1.25}
8 0
3 years ago
Please help! Only answer if you know how to do it.
Mashutka [201]
Your answer would 699.3 that is it
7 0
3 years ago
Please help!!!!!!!!!!!!!!!
tamaranim1 [39]

Answer:

(y¹-y¹/x¹-x¹)

8-11/10-19

-3/-9

1/3

Step-by-step explanation:

1/3 or one-third is your answer!

7 0
3 years ago
Substitution property of equality if y=-5 and 7x+y=11, then
slamgirl [31]
X = 16/7 Because if you substitute -5 in for y you get x = 16/7 and you can check by plugging in 16/7 in for x and you get -5 for y so your answer is: x=16/7
8 0
4 years ago
Read 2 more answers
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