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Radda [10]
3 years ago
11

Seven times a number is equal to 9 more than 4 times the number. find the number

Mathematics
1 answer:
Yanka [14]3 years ago
5 0
Represent 'a number' by x
7 times x equals 9 more than 4 times x
7 times x=9+4 times x
7x=9+4x
subtract 4x from both sides
3x=9
divide 3
x=3

the number is 3
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Answer:

Angle of A = 90 degree-62 degree =  28 degree.

Step-by-step explanation:

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cos (62) = a/c --->c = a/cos (62) = 5.319 / 0.47  = 5.3 / 0.47  = 11.3

or another way.

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Step-by-step explanation:

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  • \implies \frac{x-2-1}{x-1}=\frac{1}{2}

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6 0
2 years ago
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