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Brut [27]
3 years ago
11

5x + 25y =100 x+ 3y =12

Mathematics
1 answer:
andrew-mc [135]3 years ago
5 0
Please clarify your question because based on experience, there was never a question involving more than 1 " = "
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A store gives a customer 20% off if $10 or more amount of product is purchased. Otherwise the customer pays the usual price at c
Nadya [2.5K]

Answer:

The expected payment by the customer at the checkout is $9.

Step-by-step explanation:

The amount of the product is given as

f(x)=\left \{ {{\frac{50}{x^3}       \,\,\,\,\, x\geq 5 } \atop {0}} \right.

Now the expected payment is given as

EP=\int\limits^{10}_{5} {x f(x)} \, dx +\int\limits^{\infty}_{10} {0.8x f(x)} \, dx

Here 0.8 x is used in the second integral because of the discount of 20% i.e. the expected price is 80% of the value such that

\\EP=\int\limits^{10}_{5} {x \frac{50}{x^3}} \, dx +\int\limits^{\infty}_{10} {0.8x \frac{50}{x^3}} \, dx\\\\EP=\int\limits^{10}_{5} {\frac{50}{x^2}} \, dx +\int\limits^{\infty}_{10} {\frac{40}{x^2}} \, dx\\EP=[\frac{50}{-x}]_5^{10} +[\frac{40}{-x}]_{10}^{\infty} \\EP=[\frac{-50}{10}+\frac{50}{5}] +[\frac{-40}{\infty}+\frac{40}{10}]\\\\EP=-5+10+0+4\\EP=9

The expected payment by the customer at the checkout is $9.

8 0
3 years ago
Hey guys please solve this for me!!
Leni [432]

Answer:

1.)  C = 76.1

2.) C = 5.8

Step-by-step explanation:

5 0
2 years ago
What is the slope of a line parallel to y = 4/3x-2
den301095 [7]

I'm not that sure but I want to help

Step-by-step explanation:

y=4/3×-2

y=2/3×

Divide 2/3×

4 0
2 years ago
Show your work and check answer.<br> -3x=5x+8
frutty [35]
Let's solve your equation step-by-step.<span><span>−<span>3x</span></span>=<span><span>5x</span>+8</span></span>Step 1: Subtract 5x from both sides.<span><span><span>−<span>3x</span></span>−<span>5x</span></span>=<span><span><span>5x</span>+8</span>−<span>5x</span></span></span><span><span>−<span>8x</span></span>=8</span>Step 2: Divide both sides by -8.<span><span><span>−<span>8x</span></span><span>−8</span></span>=<span>8<span>−8</span></span></span><span>x=−1 Answer =-1 I used a calculator </span>
 
7 0
3 years ago
Read 2 more answers
If we divide the numerator and denominator of (6/8) by 2, will its value be changed?
astraxan [27]

Answer:

Step-by-step explanation:

6/8 in simplest form is 3/4 but value is still the same so

1. no

3 0
2 years ago
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