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Naddik [55]
2 years ago
10

Mike discovered that the pool in his backyard is leaking slowly. The pool holds 16,788 gallons of water, and is leaking at a rat

e of 5
gallons per day. If Mike does not replace the water that has leaked from the pool, how many gallons of water will remain in the
after 164 days?
OA. 16,378 gallons
ОВ. 17,608 gallons
OC. 15,968 gallons
OD.
16,952 gallons
Please help

Mathematics
2 answers:
Feliz [49]2 years ago
8 0

Answer:

C

Step-by-step explanation:

5x164=820

16,788-820=15,968

prisoha [69]2 years ago
7 0

Answer:

The answer is C.

Step-by-step explanation:

16,788 - 4x = y

Just put 164 for x since that's how many days will have passed.

16,788 - 5(164) = y

5 x 164 = 820

Then, subtract 820 from 16,788 to see how many gallons will remain.

16,788 - 820= 15,968

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A construction worker bought several bottles of juice for $3 at the comedian store she paid for them the $20 bills if J represen
irina [24]

Expression 20 – 3J represents the change in dollars, which construction worker will receive after buying J bottles of juice.

<u>Solution:</u>

Given that  

A construction worker bought several bottles of juice for $3 at the comedian store

She paid for them the $20 bills

Number of bottles of juice is represented by variable J

Need to write an expression for the change she receives.  

From given information

Price of 1 juice bottle = $3

\text { So price of J juice bottles }=\mathrm{J} \times \text { Price of } 1 \text { juice bottle }

=\mathrm{J} \times 3=3 \mathrm{J}

<em>Change she receives = Amount she paid - price of J juice bottles   </em>

=> Change she receives = 20 – 3J

Hence expression 20 – 3J represents the change in dollars, which construction worker will receive after buying J bottles of juice.

4 0
3 years ago
−4x+7y+5=0<br> x−3y=−5<br> ​ <br><br> How many solutions does the system have?
xeze [42]

   

Solution:  

Using Substitution Method:

-4x+7y=-5   (Equation 1)

x-3y=-5       (Equation 2)

get the value of x from Equation 2

x=3y-5     (Equation 3)  

Put the value of x from Equation 3 in Equation 1

-4(3y-5)+7y=-5

-4(3y)+20+7y=-5

-12y+7y=-5-20

-5y=-25

Negative sign on both sides cancels each other

y=25/5

y=5

Putting value of y in equation 3

x=3(5)-5

x=15-5

x=10

Therefore,   [x,y]=[10,5]

Using Elimination Method

-4x+7y=-5   (Equation 1)

x-3y=-5       (Equation 2)

Multiply equation 2 with -4 in order to eliminate the x term

-4(x-3y)=-5*4

-4x+12y=20     (Equation 3)

Adding Equation 1 and 3

-4x+7y=-5    

-4x+12y=20    

+    -     = -   (Change Of Sign with x and y terms)

-----------------

0x-5y = -25

-5y=-25

y=5  

Substituting y’s value is Equation 1

-4x+7(5)=-5

-4x+35=-5

-4x=-40

Cancellation of negative sign on both sides

x=40/4

x=10

[x,y]=[10,5]

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3 years ago
Dollars per pint
lisabon 2012 [21]

Answer:

0.42 dollar per pint

2.36 pints per dollar

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