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frutty [35]
3 years ago
9

Bruce bought two books one book cost $4.00 more than three times the other . Together, the two books cost him $72

Mathematics
1 answer:
VikaD [51]3 years ago
7 0
One is $12 the other is $72
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Find the inverse function of<br> y =x-5/6
kirill115 [55]

f(x) = y = x -  \frac{5}{6} \\

Subtract the sides of the equation plus 5/6

y +  \frac{5}{6} = x \\

So ;

{f}^{ - 1}(x) = x +  \frac{5}{6} \\

_________________________________

And we're done.

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3 years ago
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Raju has 2020 one-centimetre square tiles. He
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84 the process is shown in the following picture

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In triangle ABC, AB measures 25 cm and AC measures 35 cm. The inequality &lt; s &lt; represents the possible third side length o
Flura [38]

we know that

The <u>Triangle Inequality Theorem</u> states that the sum of any 2 sides of a triangle must be greater than the measure of the third side

so

Let

s------> the length of the third side

25+s > 35 \\ s > 35-25 \\ s> 10\ cm          

25+35 > s \\ 60 > s \\ s< 60\ cm  

10\ cm < s < 60\ cm

therefore

<u>The answer part a) is</u>

10\ cm < s < 60\ cm

we know that

the perimeter of a triangle is the sum of the length sides

In this problem

P=25+35+s\\P=60+s

<u>For s> 10\ cm</u>

the perimeter is equal to

P > 60+10\\ P>70\ cm

<u>For s< 60\ cm</u>

the perimeter is equal to

P < 60+60\\ P

so

70\ cm < P < 120\ cm

therefore

<u>the answer part b) is</u>

70\ cm < P < 120\ cm

4 0
3 years ago
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Krissi has $14 in the bank and earns $8 a day. John has 35$ and earns $5 a day when will krissi have more money?
SOVA2 [1]

Answer: 8 days

Step-by-step explanation:

K=14+8x

J=35+5x

when K=J they will have the same amount

14+8x=35+5x

8x=21+5x

3x=21

x=7 days until they have the same amount- 8 days until she has more

5 0
3 years ago
Find the mean of the data in the bar chart below.
Snowcat [4.5K]
<h2>Answer:</h2>

12

<h2>Step-by-step explanation:</h2>

<u><em>The mean is also the average.</em></u>

Add up all the number of students all together:

12+13+14+9

48

Now, Divide the total amount of students (48) by the amount of numbers you added (in this case, 48/4 because we added 4 numbers wich are 12+13+14+9)

The average amount of students is 12

7 0
2 years ago
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