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Snezhnost [94]
3 years ago
5

PLEASE HELP ME!!!!!

Mathematics
1 answer:
Juli2301 [7.4K]3 years ago
8 0
Take second equation here, 
2x + 9 = -12
2x = -12 - 9
2x = -21
Multiply by 2, 
4x = -42

Now, substitute the vaue of 4x in 1st equation, 
-42 - y = 2
-y = 2 + 42
y = -44

In short, Your Answer would be -44

Hope this helps!
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Write an equation then solve
frutty [35]
$21.50 - $4 = $17.50 If you start with $21.50, subtract the $4 entrance fee, you have $17.50 left to spend on rides. To figure out how many rides you can go on, divide $17.50 by $2.50. You can go on 7 rides. Here's the equation:

(21.5-4)/2.5=amount of rides

(21.5-4)/2.5= 7 rides


7 0
3 years ago
Read 2 more answers
HELP ASAP TIMED QUIZ!!! MANY THANKS PICTURE BELOW :}
slavikrds [6]

Answer:

2

Step-by-step explanation:

x2+3x=6

Step 1: Subtract 6 from both sides.

x2+3x−6=6−6

x2+3x−6=0

For this equation: a=1, b=3, c=-6

1x2+3x+−6=0

Step 2: Use quadratic formula with a=1, b=3, c=-6.

x=

−b±√b2−4ac

2a

x=

−(3)±√(3)2−4(1)(−6)

2(1)

x=

−3±√33

2

x=

−3

2

+

1

2

√33 or x=

−3

2

+

−1

2

√33

7 0
3 years ago
If a store uses a selling price-based markup of 40% and an item costs the store $300, what selling price would the store set for
skelet666 [1.2K]
The store sells a product for 40% more than the what they buy it for.
40% is 0.40 in decimal because all percents are out of 100 (divide by 100)
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8 0
3 years ago
Probability played a role in the rigging of the April 24, 1980, Pennsylvania state lottery. To determine each digit of the three
Whitepunk [10]

Answer:

8 potential winners ( 444, 446, 644, 464, 466, 646, 664, 666)

Step-by-step explanation:

To alter the odds the balls numbered 4 and 6 werent injected with liquid and hence they will float making it certain for their selection and determination as the winning digits. The potential of the winning numbers are (2)^3=8.

Since 4 and 6 ain't filled with liquid, they would be selected and determine the digits in the winning numbers in 8 ways ( 444, 446, 644, 464, 466, 646, 664, 666). The potential winning number is among them.

7 0
3 years ago
11). Miguel has $87,255 in a savings account that earns 9% interest per year in simple interest. To the nearest cent, how much w
tatyana61 [14]

Answer:

A).   \: \$31,411.80

Step-by-step explanation:

s.i =  \frac{p \times r \times t }{100} \\  \\ s.i =  \frac{87255 \times 9 \times 4}{100}  = 31,411.8

5 0
3 years ago
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