What is the answer to 5x + 3y =31 and 2x+3y= 25 using elimination method
1 answer:
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Answer:
Solution given:
1:
-1/8=
2. -64/27
=
Express in rational number
1. (-3/2)=-3/2*2/2=-(3*2)*(2/2)=-6/4
2. (1/5)=1/5*5/5=<u>5/25</u>
and
(-4/3)³(2/5)-⁴ ÷ (7/4)
(-4³/3³)(2-⁴/5-⁴)÷7/4
(-64/27)(5⁴/2⁴)÷7/4
(-64/27)(625/16)÷7/4
(-64*625/(27*16))*4/7
-2500/27*4/7
-10000/169
(-100/13)²
Answer:
Larger number = 34
Smaller number = 17
Step-by-step explanation:
Given that:
Sum of numbers = 51
Let,
x be the larger number
y be the smaller number
According to given statement;
x+y=51 Eqn 1
x = 2y Eqn 2
Putting x=2y in Eqn 1
2y+y=51
3y=51
Dividing both sides by 3
Putting y=17 in Eqn 2
x=2(17)
x=34
Hence,
Larger number = 34
Smaller number = 17
Answer:
Her aunt buy <u>75</u> trucks.
Step-by-step explanation:
Given:
Henry had 20 convertibles and 5 trucks in his miniature car collection. After Henry's aunt bought him some more miniature trucks, Henry noticed that a fifth of his collection were convertible.
Now, to find the trucks her aunt buy.
Let the total collection of Henry be
<em>Number of trucks Henry had in his collection = 5.</em>
<em>Number of convertibles Henry had in his collection = 20.</em>
As, Henry's collection were convertible.
Now, to get the total number of collection:
<em>Multiplying both sides by 20 we get:</em>
<em>Total collection of Henry = 100.</em>
So, the total number of trucks he had in his collection is:
<u><em>Total collection of Henry - number of convertibles Henry had in his collection.</em></u>
<em>Hence, Henry had total 80 trucks in his collection.</em>
<em>And 5 trucks he had already in his miniature car collection.</em>
Now, to get the number of trucks her aunt buy we subtract trucks he had already in his miniature car collection from the total number of trucks in Henry's collection:
<u><em>Total number of trucks in Henry's collection - Number of trucks already in his miniature car collection.</em></u>
Therefore, her aunt buy 75 trucks.