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Anuta_ua [19.1K]
3 years ago
5

When a number is decreased by 7% the result is 66. What is the original number to the nearest tenth?

Mathematics
1 answer:
Lilit [14]3 years ago
3 0

Answer:

61.7

Step-by-step explanation:

Let the number be x

% increase in the number : 7

Thus , actual increase in number will be 7% of x = 7/100 of x = 7x/100

Thus, new number with 7% increase = x+ 7x/100

given that value of new number with 7% increase is 66

Thus,

x+ 7x/100 = 66

=> (100x+7x)/100 = 66

=> 107 x = 66*100

=> x = 6600/107 = 61.682

Thus, original number is 61.682

but we have to find the number to nearest tenth .

original number is 61.7

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Answer:

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Step-by-step explanation:

To write the equation in its slope-intercept form, y = mx + b, we need to find the slope (m) of the line and its y-intercept (b).

Given the points (0, 9) and (9, 19), we can solve for the slope of the line using the following formula:

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Substitute these values on the formula:

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3 0
2 years ago
) find a vector parallel to the line of intersection of the planes 5x − y − 6z = 0 and x + y + z = 1.
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Corresponding normal vectors of the planes are
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Step-by-step explanation:

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