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lina2011 [118]
3 years ago
9

Jeremy bought four books the cost of three of the books were $13, $10 and $15. the average cost of the four books is at least $1

4. what is the minimum cost of the fourth book?
Mathematics
1 answer:
Anestetic [448]3 years ago
4 0
(13+10+15+x)÷4=14
X=18
$18
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A tank containing 64 gallons lost 6 1/4% of this through leakage how much is remaining is the tank
jolli1 [7]

if we take 64 to be the 100%, how much is 6¼% off of it?

\bf \begin{array}{ccll} amount&\%\\ \cline{1-2} 64&100\\ x&6\frac{1}{4} \end{array}\implies \cfrac{64}{x}=\cfrac{100}{6\frac{1}{4}}\implies \cfrac{64}{x}=\cfrac{\frac{100}{1}}{\frac{25}{4}}\implies \cfrac{64}{x}=\cfrac{100}{1}\cdot \cfrac{4}{25} \\\\\\ \cfrac{64}{x}=16\implies 64=16x\implies \cfrac{64}{16}=x\implies 4=x \\\\[-0.35em] ~\dotfill\\\\ \stackrel{\textit{it had}}{64}-\stackrel{\textit{leakage}}{4}\implies \stackrel{\textit{remaining}}{60}

4 0
3 years ago
Read 2 more answers
Please help !! i’m not quite getting what the equation can possibly be ? thank u !
Reika [66]
I think the answer is y=1/4x+2 :)
4 0
2 years ago
A sum of money is shared between Ali and
Zarrin [17]

Answer:

Ben' share = 2(600/5) = $240

Step-by-step explanation:

Let the sum of money be x

Given that the ratio between Ali and Ben is 3:2

As adding both parts of ratio gives 5 parts so,

For finding one part = x/5

So according to given condition:

Ali's share(one part) + Ben's share(one part) = 120

3(x/5) - 2(x/5) = 120

By simplifying:

x/5 = 120

Multiplying both sides by 5

x = 600

So the total amount is 600

Ali's share would be = 3(600/5) = $360

Ben' share = 2(600/5) = $240

i hope it will help You!

6 0
2 years ago
GIVING AWAY 10 POINTS!!!!!! What is the solution to the system of equations? x = y + 4
slega [8]

Answer:

x= -6, y= 10

Step-by-step explanation:

x= y + 4

2x = 3y - 2

If we replace "x" with "y+4" in the second equation we get:

2(y+4) = 3y - 2

2y + 8 = 3y - 2

2y - 3y = -2-8

-y = -10

y = 10

Now we can go back to the first equation and solve for x:

x = y + 4

x = 10 + 4 = 14

8 0
2 years ago
ASAP help me please thanks
Marianna [84]

Answer: I think it's D

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
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