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liubo4ka [24]
4 years ago
12

How do i solve this answer 3a-b;a=4,b=6

Mathematics
1 answer:
erastova [34]4 years ago
8 0

a=4 and b=6.

so you will plug the 4 for a and plug 6 in for b

the new equation is going to be:

3(4)-(6)

3*4-6

12-6

THE ANSWER IS 6

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Priya has completed 9 exam questions. This is 60% of the questions on the exam. How many questions are on the exam?
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the whole exam will be 100%, and let's say that's "x" questions, but we also know that 9 is 60% of that so

\bf \begin{array}{ccll} amount&\%\\ \cline{1-2} x&100\\ 9&60 \end{array}\implies \cfrac{x}{9}=\cfrac{100}{60}\implies \cfrac{x}{9}=\cfrac{5}{3}\implies 3x=45 \\\\\\ x=\cfrac{45}{3}\implies x=15

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3 years ago
A boat traveled 54 km with the stream and 42 km against the stream spending a total of as much time as it would spend while trav
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Answer:

  • 24 km/h

Step-by-step explanation:

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  • x = 24 km/h

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Step-by-step explanation:

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Your friend has $90 when he goes to the fair. He spends $5 to enter the fair and $15 on food. Rides at the fair cost $1.50 per r
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Answer: Option 'B' is correct.

Step-by-step explanation:

Since we have given that ,

Total money he takes while going to the fair = $90

Money he spends to enter the fair = $5

Money he spends on food =$15

Total he spent now is given by

\$5+\$15=\$20

Now, he spend on rides at the fair i.e. 1.50 per ride .

Let the number of rides be x

So, cost incurred on rides = 1.5x

So, the spending money can be expressed as

20+1.50x

Now, remaining money left to him after spending on x rides too is

90-(1.50x+20)\\\\=90-1.50x-20\\\\=70-1.5x

Let f(x) denotes the function used to determine the money he has left over after rides .

So it becomes

f(x)=70-1.50x\\\\f(x)=-1.50x+70


3 0
3 years ago
Read 2 more answers
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