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3 years ago

15

The sum of two numbers is 20. one number is three times as large as the second number. what are the two numbers? which let state

ment would you use?

1 answer:

Gnesinka [82]3 years ago

6 0

The answer is five and fifteen.

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If the sum of 4040 consecutive integer numbers is 2020, find out the absolute difference between the first number and the last n

bearhunter [10]

Let $x$ be the smallest of the consecutive integers summing to 2020. Then the largest integer in the sum is $x+4039,$ so our answer is $\boxed{4039}.$

For completeness, though, let's solve for the value of $x$ that satisfies the conditions of the problem. Recall that the sum of an arithmetic series with first term $a_1,$ last term $a_n,$ and $n$ terms, is $\frac{n(a_1+a_n)}{2}.$ Plugging in our known values gives us the equation $\frac{4040(2x+4039)}{2}=2020,$ which simplifies to $2x+4039=1.$ Thus, $x=-2019,$ so the 4040 consecutive integers are $-2019,-2018,\dots,-1,0,1,\dots,2018,2019,2020.$ Notice how everything except the $2020$ cancels out!

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3 years ago

Which of the given values is a solution to the equation −11=5t−9

padilas [110]

-11+9= 5t
-2=5t (divide both sides by 5)
t= -2/5

(Mark me the brainliest if this has helped )

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2 years ago

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A quadrilateral has angles that measure 87°, 69°, and 104°. What is the measure of the fourth angle? A. 50° B. 80° C. 100° D. 12

AveGali [126]

C. 100 because a quadrilateral must add up to 360. :)

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-n+(-3)+3n+5<br><br> Combing like terms :

Karolina [17]

Answer: 2n + 2 should be your answer

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2 years ago

please I need help revising maths I struggle maths u don't know want to do or how I should revise it pls help me mathematicians

vfiekz [6]

Answer:

Solving mathematics isn't as difficult as we think.All you have to do is follow the steps and practice more questions

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