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harina [27]
3 years ago
9

What is the value of x in the equation 3 x minus 4 y equals 65, when y equals 4?

Mathematics
2 answers:
katovenus [111]3 years ago
5 0
X=27 Is the answer the rest of them are wrong.
nadezda [96]3 years ago
4 0

Answer:

x = 27

Step-by-step explanation:

3x-4y = 65

Let y = 4

3x - 4*4 = 65

3x -16 = 65

Add 16 to each side

3x-16+16 = 65+16

3x  = 81

Divide each side by 3

3x/3 = 81/3

x = 27

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6. An urn contains 15 red balls and 8 blue balls. In each draw, one ball is extracted at random. It is then returned to the urn,
Leviafan [203]

Answer:

P(C4) = 0.0711

Step-by-step explanation:

consider the first draw = 15/23  since it cannot be a blue ball

The second draw = 21/29 since 6 more red balls will be added after the draw since a blue ball cannot be drawn

the third draw = 27/35 since 6 more red balls will be added after each draw since a blue ball cannot be drawn

therefore the total number of red balls will be = 15 + 6 + 6 + 6 = 33 red balls after the 4th draw. the total ball now in the urn= 33 red + 4 blue = 41

Hence the probability of drawing a blue ball at the fourth draw after drawing red balls at the previous attempts = 8/41

P(C4) = P ( fourth ball is blue ) * P( first ball red)*P(second ball red) *P(third ball red )

= (8/41) * (15/23) * (21/29)* (27/35) = 0.0711

8 0
3 years ago
− 2 1 ​ (−3y+10) test please aswer right away
insens350 [35]

Answer:

Exact Form:

y = -8/3

Decimal Form:

y = -2.6

Mixed Number Form:

y = - 2 2/3

<em>Enjoy! <3</em>

8 0
3 years ago
Solve the equation for x. show each step of the solution. name the justifications for each step of the solutions.
UkoKoshka [18]

Answer:

What grade is this?

Step-by-step explanation:


7 0
3 years ago
Evaluate 6|8−y|−15 when y = 10
geniusboy [140]

Step-by-step explanation:

6|8-y|-15

6|8-10|-15

6|-2|-15

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7 0
3 years ago
Gia's ruler is divided into tenths of an inch. What fraction of an inch represents the greatest possible measurement error due t
miskamm [114]
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4 0
3 years ago
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