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Dimas [21]
2 years ago
13

Find m, given that the three angles of a triangle are (m+18), (2m+28) and (3m+47).

Mathematics
1 answer:
alukav5142 [94]2 years ago
8 0

Step-by-step explanation:

As all angles in a triangle add up to 180°

we can write:

(m+18)+(2m+28)+(3m+47) = 180

6m + 93 = 180

6m = 180 - 93

6m = 87

m = 87 / 6

m = 14.5

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Dominik [7]

Answer:     C can complete the work in 12 days.

Step-by-step explanation:

Alright, lets get started.

Given that, A and B can separately do a piece of work in 24 days and 16 days respectively.

It means, in 1 day, A can complete the part of work : \frac{1}{24}

It means, in 1 day, B can complete the part of work : \frac{1}{16}

As they both worked together for 6 days,

in 6 days, A can complete the part of work : 6*\frac{1}{24}=\frac{1}{4}

in 6 days, B can complete the part of work : 6*\frac{1}{16}=\frac{3}{8}

So, together they had completed the work : \frac{1}{4}+\frac{3}{8}=\frac{5}{8}

So remaining work will be : 1-\frac{5}{8}

So remaining work will be : \frac{3}{8}

Now this remaining work is done by A and C together.

Suppose C alone can do this work in C days.

So in 3 days, A and C completed the rest work  :

3 \times(\frac{1}{24}+\frac{1}{C})=\frac{3}{8}

\frac{1}{24}+\frac{1}{C}=\frac{1}{8}

\frac{1}{C}=\frac{1}{8}-\frac{1}{24}

\frac{1}{C}=\frac{1}{12}

C=12

Hence C can complete the work in 12 days.   :  Answer

Hope it will help :)

7 0
3 years ago
Classify each polygon by the number of sides. Tell whether it's convex or concave.<br>​
EastWind [94]

Answer:

  a. hexagon, convex

  b. pentagon, concave

  c. heptagon, convex

  d. decagon, concave

Step-by-step explanation:

Count the sides. Refer to your memory or a list of polygon names for the appropriate name.

If any internal angle measures more than 180°, the polygon is concave. Otherwise, it is convex.

7 0
3 years ago
What percentage of the data values falls between the values of 27 and 45 in the data set shown?
OLga [1]

Answer:

the answer is 75% hope that helps

Step-by-step explanation:

i did the test and i got it right

5 0
3 years ago
Read 2 more answers
Five friends—Allison, Beth, Carol, Diane, and Evelyn— have identical calculators and are studying for a statistics exam. They se
brilliants [131]

Answer:

20%

Step-by-step explanation:

this is because that 1 in 5 is equal to 20%

7 0
3 years ago
Joey had a balance of $250.50 in his account, and then he made a purchase for $317.25. What is the new
aivan3 [116]

Answer:

Joey has no money in his account. He is now indebted for $66.75

Step-by-step explanation:

250.5 - 317.25 = -66.75

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3 years ago
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