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mamaluj [8]
3 years ago
8

PLEASE HELP I WILL MARK BRAINLIEST PLUS 50 POINTS

Mathematics
2 answers:
Lilit [14]3 years ago
6 0
Answer:
2
Explanation:
Scilla [17]3 years ago
4 0

Answer:

2 graphs represent a linear relationship

Step-by-step explanation:

2 out of your 3 graphs make a straight line if you were to draw a line throught the points

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One group (A) contains 330
katrin2010 [14]

Answer:

group A.)220/330

group B.)339/509

Step-by-step explanation:

2/3 of 330 is 220 therefore the people selected in group a to win $100 fuel cards  will be 220/330

same thing for group B. 2/3 of 509 is 339 so the answer will be 339/509

                                  (hope i helped:))

4 0
4 years ago
It is known that x1 and x2 are roots of the equation x2−8x+k=0, where 3x1+4x2=29. find k.
zysi [14]

Answer:

k = 15

Step-by-step explanation:

∵ x² - 8x + k = 0 ⇒ has two roots x1 and x2

∵ ax² + bx + c = 0 has two roots

∴ The sum of roots = -b/a and the product of them = c/a

∵ a = 1 , b = -8 and c = k

∴ x1 + x2 = -(-8)/1 = 8

∴ x1 + x2 = 8 ⇒ (1)

∵ 3x1 + 4x2 = 29 ⇒ (2)

Multiply (1) by -4

∴ -4x1 - 4x2 = -32 ⇒ (3)

Add (2) and (3)

∴ -x1 = -3

∴ x1 = 3

By substituting value of x1 in (1)

∴ 3 + x2 = 8

∴ x2 = 5

∴ The roots are 3 and 5

∴ c/a = 3 × 5 = 15 ⇒ (a = 1)

∴ c = 15

∴ k = 15

4 0
3 years ago
5.63 + 14.37 PLZ ANSWER QUICK
erica [24]
To add decimals, line up the decimal points.
Here are some examples.

1.2
1.43

10.2
 2.5

938.290
   21.001

After you line up the decimal points, just add and carry down the decimal point.

14.37
 5.63
_____
 20.00

So, the answer is 20.
      
5 0
3 years ago
A Dodecahedron (12 sided die) is thrown, what is the P( odd OR a number greater than 6)?
djverab [1.8K]

Answer:

6 numbers greater than 6, plus 1,3 and 5- so nine total.

9/12, simplified 3/4

3 0
3 years ago
Write an algebraic equation and solve. The sum of three times a number and 6 is 30
pishuonlain [190]

Answer:

3+x*6=30

Step-by-step explanation:

You can put any number but I choose x but here is you answer all you have to do is add 3 to a number and multiply it by 6.

4 0
3 years ago
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