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ANEK [815]
3 years ago
10

☆+☆+☆=18♡+♡+☆=14♤+♤+♡=2♡+♤+☆☆=Genius only look closely at the details ​

Mathematics
1 answer:
Dmitriy789 [7]3 years ago
5 0

Answer:

15

Step-by-step explanation:

3 stars = 18

1 star = 6

14-6=8/2 = 4

1 heart = 4

1 spade = -1

4 + -1=  3

3 + (2 stars)

3 + 12 = 15

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The sum of two numbers is 31.The product of the two numbers is 150. What are the two numbers?
Nikolay [14]
The two numbers I will call x and y.
x + y = 31
x * y = 150

You then solve for one variable in either equation and substitute it into the other equation.

x + y = 31
x = 31 - y

Then you plug it in:
x * y = 150
(31 - y) * y = 150
-y² + 31y = 150
y² - 31y + 150 = 0            Then factor:
(y - 6)(y - 25) = 0
y - 6 = 0        y - 25 = 0
y = 6             y = 25

When you plug y into the original equations, it comes out that the two numbers are 6 and 25. You can check your work because 6+25 = 31 and 6*25 = 150. Hope this helps! :)
5 0
3 years ago
Plz help me
Snowcat [4.5K]

Answer:

9/4 as a fraction or 2.25 as a decimal

Step-by-step explanation:

6 0
3 years ago
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Which expression is equivalent to 4(2w + 3) + 2(3 + w)?
Semmy [17]
Once you combine it, you get 10w + 18
6 0
2 years ago
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What is the equivalent to 3/20 as a fraction
aalyn [17]
6/40 is equalvilant because all you have to do is double or simplify it by 2
5 0
3 years ago
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An element with mass 590 grams decays by 19. 5% per minute. How much of the element is remaining after 15 minutes, to the neares
solmaris [256]

Answer:

Step 1

Formulate a recursive sequence modeling the number of grams after n  minutes.

we have that

100%-17.1%-------------- > 82.9%------------> 0.829

a(n) = 780*[0.829^n]

for n=19 minutes

a(19)=780*[0.829^(19)]=22.1121 g---------------> 22.1 g

the answer is 22.1 g

Step-by-step explanation:

5 0
2 years ago
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