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juin [17]
3 years ago
7

How many triangles can be constructed with angles 120,40,and 10

Mathematics
1 answer:
Arada [10]3 years ago
8 0
The answer is

1. None
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Twice the sum of a number and 3 times a second number is 4. The difference of ten times the seco
34kurt

Two numbers that gives twice the sum of a number and 3 times a second number is 4. The difference of ten times the second number and five times the first is 90 are -10  and 4

Given :

Twice the sum of a number and 3 times a second number is 4. The difference of ten times the second number and five times the first is 90.

Let a  and b be the two  unknown numbers

Lets frame equation using the given statements

Twice the sum of a number and 3 times a second number is 4.

2(a+3b)=4\\a+3b=2

the difference of ten times the second number and five times the first is 90

10b -5a=90\\Divide \; by \;5 \\2b-a=18

Now use these two equations to solve a  and b

a+3b=2\\-a+2b=18

Add both the equations

a+3b=2\\-a+2b=18\\--------------------------\\5b=20\\b=4

Now find out 'a'

a+3b=2\\a+3(4)=2\\a+12=2\\a=2-12\\a=-10

The two numbers are -10  and 4

Learn more :  brainly.com/question/13856304

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3 years ago
What is 20 divided by 10 plus 50
Deffense [45]

Answer:

20/10 + 50=52

Step-by-step explanation:

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If Darlene reads 5/8 of a 56 page book how many pages did she read?
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Darlene read 35 pages of the book.
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The rainfall for one year was 35.8 inches. What was the approximate rainfall per month
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Suppose we want to choose 5 objects, without replacement, from 15 distinct objects.
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15444 ways we can choose 5 objects, without replacement, from 15 distinct objects.

Given that, suppose we want to choose 5 objects, without replacement, from 15 distinct objects.

<h3>What is a permutation?</h3>

A permutation is a mathematical calculation of the number of ways a particular set can be arranged, where the order of the arrangement matters.

Now, 13P_{5}= 13!/(13-5)!

= 13!/8! = 13x12x11x10x9= 1287 x 120 = 15,444

Therefore, 15444 ways we can choose 5 objects, without replacement, from 15 distinct objects.

To learn more about the permutation visit:

brainly.com/question/1216161.

#SPJ1

3 0
2 years ago
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