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3 years ago

Y-5b Evaluate the expression when b= -3 and y=5

Mathematics

2 answers:

lianna [129]3 years ago

5 0

Answer: 20

Step-by-step explanation:

all you need to do is substitute the variables into the given expression, y-5b would turn into 5-5(-3) then you solve and you get 5-(-15) = 5+15 = 20, so youre answer is 20

USPshnik [31]3 years ago

5 0

Answer:75

Step-by-step explanation:Hey there! So we know what to substitute for the letters. Our new equation should look like this: 5(-5)(-3). By using PEMDAS, we should first multiply 5 by -5, which is -25. Our equation now should look like this: -25(-3). Since they are right next to each other, you have to multiply them. When you multiply two negative numbers, they turn out to be positive. Your answer should be positive 75

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Step-by-step explanation:

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3 years ago

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Answer:

C. (-4, -3)

Step-by-step explanation:

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2 years ago

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2 years ago

A taxi driver had 43 fares to and from the airport last Monday. The price for a ride to the airport is $12, and the price for a

leva [86]

Answer:

(25,18) is the required solution.

Step-by-step explanation:

We are given the following in the question:

Let x be the number of trips to the airport and y represent the number of trips from the airport.

Total number of fares to and from the airport = 43

Thus, we can write the equation:

$x+y = 43$

Price for a ride to the airport = $12

Price for a ride from the airport = $10

Total amount collected by the driver = $480

Thus, we can write the equation:

$12x+10y=480$

Solving the two equations, we get,

$12x+12y-(12x+10y)=516-480\\\Rightarrow 2y =36\\\Rightarrow y = 18\\\Rightarrow x = 43-18=25$

Thus, the driver made 25 trips to the airport and 18 trips from the airport.

The solution can be represented as (25,18)

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2 years ago