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alyssanewsome
12.06.2020 •
Mathematics
Can x=4 in the expression 3(x-1)=20
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Ответ:
if we take x=4 in the above expression we get,
3(4-1)=20
3×3=20
9≠20
so we can understand that x=4 is not the right value of x
hope it helps you
Ответ:
No
Step-by-step explanation:
We are given the equation:
3(x-1)=20
We want to know if x can equal 4. Therefore, we can substitute 4 in for x. If 4 is a solution, then both sides of the equation will be the same.
3(x-1)=20
x=4
3(4-1)=20
Solve inside the parentheses first. Subtract 1 from 4.
3(3)=20
Multiply 3 and 3
9=20
9
20
9 is not equal to 20. Therefore, 4 cannot be a solution.
Ответ:
35 baseball cards
28 basketball cards
So the ratio would be 35:28
But then you need to simplify that so you get 5/4 = 1 1/4
(You get 5/4 because you divide the numerator and denominator by 7)