ericavasquez824
29.10.2019 •
Mathematics
Does (8,7) make the equation y=2x-9 true
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Ответ:
7= 2(8)-9
7= 16-9
7=7
Yes, since the equation is true on both sides after solving it.
Ответ:
Ответ:
13
Step-by-step explanation:
Given the expression;
2 1/3 : 4 1/3 = 7 : x
Wea re to look for x;
Convert to improper fractions;
7/3 : 13/3 = 7:x
7/3 * 3/13 = 7/x
7/13 = 7/x
Cross multiply
7x = 13 * 7
7x = 91
x = 91/7
x = 13
Hence the unknown value is 13