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Setler [38]
3 years ago
9

Is the number 15 prime or composite? prime composite Please help me. Will mark brainiest! Thats okay if you don't know don't ans

wer if don't know than.
Mathematics
2 answers:
elixir [45]3 years ago
8 0

Answer:

Hey there!

15 is composite. A composite number has factors other than one and itself. 15 has factors 3 and 5.

Thus, 15 is composite.

Let me know if this helps :)

wel3 years ago
7 0

Answer:

Composite

agsjakkhddjnskwieudkdnhjdk

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Solve :<br><br> 5x - 7y = 12<br><br> 5y - 2x = - 7
Afina-wow [57]
There is one solution:

use elimination method

5x - 7y = 12
5y - 2x = -7    ---> change equation around

 5x - 7y = 12
-2x + 5y = -7

2 x ( 5x - 7y) = 2 x (12)    multiply both sides by 2
5 x (-2x +5y) = 5 x (-7)

this give you
 10x - 14y =24 
-10x+25y = -35                    add down
-----------------------------
        11y = - 11                    x is eliminated to find y value
           
            y = -1                         input to one of the original equations

5(-1)  - 2x = -7

-5  - 2x = -7
+5           +5                       add 5 to both sides
----------------------------
-2x = -2
    x = 1

your coordinates for when they intersect is at (1, -1)
one solution




3 0
3 years ago
Read 2 more answers
2/35=x/140 solve the proportion
tamaranim1 [39]

\frac{2}{35}=\frac{x}{140}    Multiply 140 on both sides to get "x" by itself

(140)\frac{2}{35}=\frac{x}{140} (140)

\frac{280}{35}=x

8 = x

4 0
3 years ago
What is the value of 20+6•5/-2
scoray [572]

Answer:

The answer is 25

Step-by-step explanation:

6•5=30

30+20=50

50/-2=25

7 0
3 years ago
Solve for x. (7x=78)
Ksivusya [100]
<span>     
11 1/7 mixed number



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8 0
4 years ago
A soccer club had 22 members with a mean age of 19.
Then 22 new members joined. One is 17 years old, and the other is
Mademuasel [1]

Answer:

Step-by-step explanation:

number of members=22

mean age=19 years

Total age of 22 members=22×19=418 years

age of new members=17 years and 30 years

Total age of 24 members=418+17+30=465 years

mean=465÷24=19.375 years

4 0
3 years ago
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