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3 years ago

$85 Restaurant Bill; 15% Tip

Mathematics

1 answer:

svp [43]3 years ago

8 0

Answer:

97.75

Step-by-step explanation:

15% of 85 is 12.75

12.75 + 85 = 97.75

Hope this helps have a nice day

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Solve |1 - 4x| > 7 and Solve |5x - 1| < 1<br> PLEASE EXPLAIN!

denis-greek [22]

Since |1-4x|>7 it can also be 1-4x<-7
so you get 1-4x>7 then get the x by its self -4x>7 then you make the x positive. multiply by -1 so you switch the sign 4x<7 divid by 4 and you get x<7/4 now you go on to the other equation 1-4x<-7 you get the x by itself and get -4x<-8 and multiply by -1 to get a positive number so you swith the sign 4x>8 so you didid by 4 and get x>2 so you get an interval notation of (-infinity,7/4) u (2,+infinity)

the |5x-1|<1 interval notation is (-2/5 ,0)

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3 years ago

HELP ⚠⚠⚠ MARKING BRAINLIEST, IF UR CONFUSED, I NEED HELP WITH QUESTION 9 BUT QUESTION 8 IS RELATED TO IT ⚠⚠⚠

4vir4ik [10]

Answer:

John has a sheet of paper that is 8 feet long. He cuts the length of paper into eighths, and then cuts the length of each of these $\frac{1}{8}$ pieces into fourths. How many pieces does he have? How many inches long is each piece?

Step-by-step explanation:

3 0

3 years ago

Jeff's salary is 25% higher than Josh's. By how many percent is Josh's salary less than Jeff's?

svetoff [14.1K]

It is 20%. Assume Josh is 100000 and Jeff is 125000
The formula is (Jeff- Josh)/Jeff * 100 = (25000)/100000 *100 = 20%

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3 years ago

Evaluate. log(3)5 = _____<br><br> 0.68<br> 1.46<br> 0.60

Rom4ik [11]

By using the base change formula, which states

$\log _{a}b= \frac{\log b}{\log a}$

The given equation is $\log _{3}5= \frac{\log 5}{\log 3}$

By substituting the values of log 5 and log 3.

$= \frac{0.6989}{0.477}$

= 1.46

4 0

3 years ago

Fernando is playing hide-and-seek with Darnel and Joy. Darnel is hiding 5 meters south of Fernando, and Joy is hiding due east o

pashok25 [27]

Answer:

<h2>6.2 metres apart</h2>

Step-by-step explanation:

Find attached a diagram for proper elucidation of the question. The resulting shape is a right angled triangle with hypotenuse FJ, and the other two sides DF and DJ respectively.

Using Pythagoras theorem to get the side DJ which is the distance between Daniel and Joy. <em>According to the theorem, the square of the hypotenuse of a right angled triangle is equal to the sum of the other two sides. </em>

FJ² = DF² + DJ²

From the diagram, FJ = 8 and DF = 5. Substituting this values into the theorem above to get DJ;

8² = 5²+DJ²

DJ² = 8²-5²

DJ² = 64 -25

DJ² = 39

DJ = √39

DJ = 6.2 (to the nearest tenth)

This shows that Darnel is 6.2 metres away from Joy

8 0

4 years ago