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Levart [38]
3 years ago
8

2x – yl. when x = 3 and y = 10​

Mathematics
1 answer:
iragen [17]3 years ago
5 0

Answer:

Step-by-step explanation:

Here you go mate

Step 1

2x-y  Equation/Question

Step 2

2x-y  Evaluate for x and y

2(3)-10

Step 3

2(3)-10  Simplify

6-10

answer

-4

Hope this helps

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Mrs. Doyle just received her electricity bill for the
zepelin [54]

Answer:

try using the steps in my question i have a question just like yours

Step-by-step explanation:

3 0
2 years ago
Solve the quadratic equation 3x^2 +x-5=0<br> Give your answer to 2 decimal places
Firdavs [7]

This quadratic should be solved using the quadratic formula.

 

The quadratic formula is

 

(-b +/- sqrt(b2 - 4ac)) / (2a)       (Side note: The +/- means that you use the plus sign once, then recalculate again using the minus sign. You should get two answers this way.)

 

The numbers that we plug into the letters can be found from the general form of a quadratic equation

 

ax2 + bx + c

 

In your quadratic a = 3, b = 1, and c = -5. I'll let you try and solve the rest on your own. Whatever your answer is, round it off to two decimal places.

5 0
3 years ago
The probability of winning a game is 40%. How many times should you expect to win if you play each number of times? 5 times
Sophie [7]

Answer:

twice

Step-by-step explanation:

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0.40 times 5 = 2.0

3 0
2 years ago
What is the length of BC in the right triangle below?
sleet_krkn [62]

Answer:

F. 82

Step-by-step explanation:

To calculate the length of BC, Pythagoras theorem will be used.

It says, Hypotenuse^2 = Perpendicular^2 + Base^2

In our case, Perpendicular = AB = 18 and Base = AC = 80

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6 0
2 years ago
HELP
Dimas [21]

Answer:

$17.14

Step-by-step explanation:

Given : y = - 0.34x^2 + 4.43x + 3.46

To Find : Using the quadratic regression equation, what was the predicted profit in year 8

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y = - 0.34x^2 + 4.43x + 3.46

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So, Option D is true

Hence the predicted profit in year 8 is $17.14

5 0
3 years ago
Read 2 more answers
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