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AlexFokin [52]
2 years ago
7

What is the value of x in the equation 3x-4y= 65 when y=4?

Mathematics
2 answers:
Sophie [7]2 years ago
6 0
X=27

Step by step
3x-4y=65. Y=4

3x-(4x4)=65

3x-16=65

3x=65+16

3x=81

X=81/3

X=27
77julia77 [94]2 years ago
6 0

Answer:

x = 27

Step-by-step explanation:

3x - 4y = 65

When y = 4;



3x - 4(4) = 65

3x - 16 = 65

3x = 65 + 16

3x = 81

x = 81/3

x = 27

Hence, value of x is 27.



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A random sample of 250 juniors majoring in psychology or communication at a large university is selected. These students are ask
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Solution :

It is given that :

Number of students in a random sample majoring in communication or psychology at an university = 250

Total number of students majoring in psychology = 100

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So number of students majoring in psychology  those who are not happy = 20

Total number of students majoring in communication = 250 - 100 = 150

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    = 0.78

b). Psychology major $=\frac{80+20}{250}$

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c). Probability of the students who are happy with the communication as the choice of major = $\frac{115}{250}$ = 0.46

d). Students unhappy with their choice of major given that the student is psychology major = $\frac{20}{250}$  =  0.018

8 0
2 years ago
Someone please help me as fast as possible just ignore the graph thing
fenix001 [56]

14 \div 50 = x \div 7500
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8 0
3 years ago
Find all numbers that are not in the domain of the function
leonid [27]
Domain values represent possible x values that are allowed to be plugged in and produce a y value. The values (in this case value) that are not allowed to be plugged in are what make the denominator zero (since you cannot divide by zero). Simply set the denominator equal to zero to figure out this value. 

3x + 8 = 0
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6 0
3 years ago
15 more than the quotient of 24 and a number x
iris [78.8K]

Answer:

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You multiply 24 and x together, then add 15 to the sum.

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