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ivann1987 [24]
2 years ago
13

Raphael paid $477 for a camera during a 25% off sale. what was the camera's regular price?

Mathematics
1 answer:
Rudik [331]2 years ago
3 0
All you do Is multiply 477 by .25 and get 119.25 add that to 477 and get 596.25= Answer.
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The 100-meter dash times in the girls track meet were normally distributed with a mean of 13 seconds and a standard deviation of
Svetllana [295]

Answer:

97.68 %

z(lower) = .0227

z(upper) = .999

Step-by-step explanation:

5 0
3 years ago
Find the sum of the first 325325 positive even whole numbers.
iris [78.8K]
Multiply 325326×(325325/2)=52,918,503,138 How it works:
know that 325325+1 is 325326, then 325324+2 is the same number, therefore you will get this number as many times as half of biggest number since you sum every last biggest number-1 with every last smallest number+1. so just multiply and you will get
6 0
3 years ago
Please help me with 2 and 3 and use the elimination process!
grandymaker [24]

Answer:

2. Judy =$5

Ben= $4

Step-by-step explanation:

2. Let Judy =  x  and Ben =  y

8x + 10y = 80

9x + 5y = 65

Solve these simultaneous equations.

8 x  +  10 y  =  80

18 x  +  10 y  =  130

Take the second equation away from the first equation

− 10 x  =  − 50

x  =  5

This means that Judy gets paid $5 an hour.

Therefore, Ben gets paid $4 an hour.

Answer:

3. 24 quarters and 16 dimes

Step-by-step explanation:

3. Let the number of dimes = x and the number of quarters = y

                                    Value      Value

Type        Number       of             of

of             of                EACH      ALL

coin         coins            coin        coins

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

dimes         x              $0.10       $0.10x

quarters      y             $0.25      $0.25y

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

TOTALS    40                            $7.60

x + y = 40

0.10x + 0.25y = 7.60

Get rid of decimals by multiplying every term by 100:

10x + 25y = 760

So we have the system of equations:

x + y = 40

10x + 25y = 760

         

We solve by substitution.  Solve the first equation for y:

x + y = 40

y = 40 - x

Substitute (40 - x) for y in 10x + 25y = 760

      10x + 25(40 - x) = 760

      10x + 1000 - 25x = 760

           -15x + 1000 = 760

                  -15x = -240

                       x = 16 = the number of dimes.

Substitute in y = 40 - x

                     y = 40 - (16)

                     y = 24 quarters.

$1.60 + $6.00 = $7.60

I hope that helped, sorry for taking so long :-)

8 0
3 years ago
Three students performed a science experiment using salt and a beaker. The beaker contained 530.2 grams of salt before the exper
anzhelika [568]
We are subtracting 3 * 47.36 from 530.2

3 * 47.36 = <span>142.08
</span>
530.2 - 142.08 = <span>388.12

Your answer should be </span><span>388.12 grams left. Hope this helps!</span>
3 0
3 years ago
Read 2 more answers
-3Ixl + 2x - 1, if x = -5<br><br> I don't get these types of problems :/
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Me either jiji jajaja jajaja jauja ink jajajja jaujas di Ian’s a
5 0
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