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GalinKa [24]
3 years ago
11

The train station clock runs too fast and gains 8 minutes every 10 days. How many minutes and seconds will it have gained at the

end of 7 days
Mathematics
1 answer:
Dvinal [7]3 years ago
7 0

Answer:

At the end of 7 days, it will have gained 5 minutes and 36 seconds.

Step-by-step explanation:

This question can be solved using a rule of three.

It gains 8 minutes every 10 days. How much does it gains every 7 days?

7 days - x minutes

10 days - 8 minutes

10x = 7*8

10x = 56

x = \frac{56}{10}

x = 5.6

Each 7 days, it gains 5.6 minutes. That is, it gains 5 full minutes, plus 0.6 = 60% of a minute, in seconds.

A minute has 60 seconds. 0.6*60 = 36

So

At the end of 7 days, it will have gained 5 minutes and 36 seconds.

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Find the missing value for log4 9- log4 11= log 4 [ ]
Alexandra [31]

Answer:

Step-by-step explanation:

Hi there,

To get started, recall the logarithm rules. For this question, we can use the log rule specifically when subtracting two log functions that have the same base:

log_b\alpha -log_b\beta =log_b[\frac{\alpha }{\beta } ]

In this prompt, our base is 4, so b in the above formula. Using this formula, we can find the missing <u><em>argument</em></u> (the number inside of the log, what we are asked to solve for):

log_49-log_411=log_4[\frac{9}{11} ]\\   hence the missing argument is 9/11

At this point, there is no easier say to simplify, unless you wish to approximate  9/11 as 0.818. If you wish to solve for the exponent, you will have to use common log or natural log to do so.

If you liked this solution, leave a Thanks or give a rating!

thanks,

6 0
3 years ago
On a number line, a number, b, is located the same distance from 0 as another number, a, but in the opposite directior
bazaltina [42]

Answer:

b=-a

Step-by-step explanation:

Becaude when b is <u>positive</u> a will be <u>negative</u>

And when b is <u>negative</u> a will be <u>positive</u>.

8 0
3 years ago
PLZ HELPPP MEEEE What is the difference between a rate and a unit rate
slega [8]

A rate is a special ratio in which the two terms are in different units. For example, if a 12-ounce can of corn costs 69¢, the rate is 69¢ for 12 ounces. ... When rates are expressed as a quantity of 1, such as 2 feet per second or 5 miles per hour, they are called unit rates.

hope this helps!

5 0
3 years ago
Which formula can be used to describe the sequence below 27,9,3​
Ierofanga [76]

Answer:

a_n=27 \cdot (\frac{1}{3})^{n-1}.

Step-by-step explanation:

This is a geometric sequence that means there is a common ratio.  That means there is a number you can multiply over and over to get the next term.

The first term is 27.

The second term is (1/3)(27)=9.

The third term is (1/3)(9)=3.

So the common ratio is 1/3.

That means you can keep multiplying by 1/3 to find the next term in the sequence.

The explicit form for a geometric sequence is a_n=a_1 \cdot r^{n-1} where a_1 is the first term and r is the common ratio.

We are given a_1=27 and r=\frac{1}{3}.

So the explicit form for the given sequence is a_n=27 \cdot (\frac{1}{3})^{n-1}.

3 0
3 years ago
Yeah....I have no idea. I tried and apparently I got two wrong answers. ​
Karo-lina-s [1.5K]

Answer:

Step-by-step explanation:

(11,13)  (8,18)

slope = y₂ - y₁/x₂-x₁

= 18- 13 / 8-11

= 5 / - 3

= -5/3

4 0
3 years ago
Read 2 more answers
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