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Basile [38]
2 years ago
11

Write an equivalent expression to: 5(2x + 3)

Mathematics
1 answer:
zalisa [80]2 years ago
7 0

Answer:

10x + 15

Step-by-step explanation:

Multiplying by 5 gives the aforementioned answer.

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Consider that x=5 and y=7. Is the sum of x + y rational, irrational, or neither irrational nor rational!
nasty-shy [4]
The sum of y+x, or 5+7, is rational.  This is because each integer(non fraction/decimal)is rational, it is also rational.
5 0
3 years ago
Write a rule for each pattern. Then use your rule to find the next two terms in the pattern. The numbers are: 1, 3, 6, 10, 15, 2
Leya [2.2K]
Triangular Number Sequence

This is the Triangular Number Sequence:

<span>1, 3, 6, 10, 15, 21, 28, 36, 45, ...</span>

This sequence comes from a pattern of dots that form a triangle:

By adding another row of dots and counting all the dots we can 
find the next number of the sequence.

A Rule

We can make a "Rule" so we can calculate any triangular number.

First, rearrange the dots (and give each pattern a number n), like this:

Then double the number of dots, and form them into a rectangle:

<span><span>The rectangles are n high and n+1 wide</span><span>and <span>xn</span> is how many dots in the triangle (the value of the Triangular Number n)</span></span>

And we get (remembering we doubled the dots):

<span>2xn = n(n+1)</span><span>xn = n(n+1)/2</span>

<span>Rule: xn = n(n+1)/2</span>

Example: the 5th Triangular Number is

x5 = 5(5+1)/2 = 15

Example: the 60th is

x60 = 60(60+1)/2 = 1830

Wasn't it much easier to use the formula than to add up all those dots?

5 0
3 years ago
Read 2 more answers
What is the median of the data?
Ket [755]
Answer: 62
Step by step: sorry !!
7 0
3 years ago
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What lies between 1 by 2 and 2 by 3<br>a) 1 by 2<br>b) 4 by 5<br>c) 5 by 6<br>d) <br>​
Amiraneli [1.4K]

Answer:

I think the answer would be A .

7 0
3 years ago
Find the slope of the following line. -9x-2y= -18
STatiana [176]

Answer:

m= -9/2

Step-by-step explanation:

hope i helped :) !!!

brainliest please :) !

7 0
3 years ago
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