3 years ago

A clock loses 5 minutes every day. how much time will it lose in 2 hours?

1 answer:

3 0

If a clock loses 5 minutes every day that means it loses 5 minutes every 24 hours. the question askes us how much it will lose in 2 hours. hours have a ratio of 12:1 so will minutes will have 5 /12 = 0.416.
it will loose 0.416 min so it will lose 25 seconds

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My questions are in the picture please help

Marrrta [24]

21.

So to solve for the value of a variable in an equation, you would need to isolate x on one side. The first thing you have to do is multiply 2 and (x + 7) together, which can be rewritten as 2(x) + 2(7). After multiplying, your equation would be: $2x+14+3x=12$ , or A.

22.

So the rule with multiplying exponents with the same base is to add the exponents together, and the rule with dividing exponents with the same base is to subtract the exponents. Your equation will be simplified as such:

$4^{(3+4)-9}\\ 4^{7-9}\\ 4^{-2}$

Now the rule with converting negative exponents into fractions is $x^{-m}=\frac{1}{x^m}$ . In this case, 4^-2 would turn into $\frac{1}{4^2}$ , or C, which is your final answer.