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FromTheMoon [43]
3 years ago
9

What is the value of a in the equation 3a+b=54 , when b=9 ?

Mathematics
2 answers:
Bess [88]3 years ago
6 0

Use substitution method

3a+9=54

3a+9-9=54-9

3a= 45

divide by 3

3a/3= 45/3

a= 15

Answer is a= 15

Phoenix [80]3 years ago
6 0

Answer:

a = 15

Step-by-step explanation:

3a + b = 54

3a + 9 = 54

3a + 9 - 9 = 54 - 9

3a = 45

3a divided by 3 = 45 divided by 3

a = 15

3 x 15 + 9 = 54

45 + 9 = 54

54 = 54

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In a survey, 205 people indicated they prefer cats, 160 indicated they prefer dots, and 40 indicated they don’t enjoy either pet
maw [93]

Answer: probability =  0.506

Step-by-step explanation:

The data we have is:

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3 years ago
Factor out the coefficient of the variable 5/6s+2/3
DochEvi [55]
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5/6 ( )

so what's in the parenthesis? well, if we distribute in our mind, S would just have to be by itself for it to work out. so we have

5/6 ( s )

but what about 2/3? well, if we're multiplying everything on the inside by 5/6, how can be get it to cancel and leave 2/3 alone? we could divide 2/3 by 5/6, right?

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6 0
3 years ago
Which expression is equivalent to 4.35 - 5.5?
Drupady [299]

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Step-by-step explanation:  

4.35 - 5.5= -1.15

The equivalent equation to 4.35 - 5.5 will be,

-1.15 ≈ - (23÷20)

7 0
2 years ago
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