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il63 [147K]
4 years ago
13

Vlad spent 20 minutes on his history homework and then completely solved x math problems that each took 2 minutes to complete. W

hat is the equation that can be used to find the value of y, the total time that Vlad spent on his homework, and what are the constraints on the values of x and y?
1. y=2x+20; x is any integer greater than or equal to 0, and y is an integer greater than or equal to 20.

2. y=2x+20; x is any real number greater than or equal to 0, and y is any real number greater than or equal to 20.

3. y=20x+2; x is any integer greater than or equal to 0, and y is an integer greater than or equal to 20.

4. y=20x +2; x is any real number greater than or equal to 0, and y is any real number greater than or equal to 20.
Mathematics
2 answers:
MAXImum [283]4 years ago
5 0
I believe #2 would be the best answer. Either that or #1.
Genrish500 [490]4 years ago
5 0

Answer:

y=2x+20; x is any integer greater than or equal to 0, and y is an integer greater than or equal to 20

Step-by-step explanation:

Vlad spent 20 minutes on his history homework and then completely solved x math problems that each took 2 minutes to complete

Let x be the number of math problems

Initial time spent = 20 minutes

Equation is y=mx+b

each problem took 2 minutes to complete.. so m=2

y=mx+b

y=2x+20

y=2x+20; x is any integer greater than or equal to 0, and y is an integer greater than or equal to 20

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Y= <br> Help me please thank u
Orlov [11]

Answer:

Y≈4.6

Step-by-step explanation:

Because the hypotenuse is 9rad2 and the angle opposite of it is a 90. You can deduce it is a 90-45-45. From this you can tell the legs are 9. You then do 9 tan 26 to get about 4.4, and after this you subtract it from 9.

3 0
2 years ago
In class of 30 students 14 are boys. If 2 boys drop out of the class and 2 girls are added what fraction of the class will be bo
Alecsey [184]
30 students.....14 are boys...that means (30 - 14) = 16 are girls

if 2 boys are dropped......14 - 2 = 12 boys
and 2 girls are added......16 + 2 = 18 girls

fraction of the class that are boys is : 12/30 which reduces to 2/5 <==
5 0
4 years ago
Read 2 more answers
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Colt1911 [192]
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3 years ago
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3 0
3 years ago
∆ABC is an isosceles triangle in which angles B and C are congruent.
Brut [27]
Since B and C are congruent, that means that 4x+10=x+34. Using the addition property of equality, I challenge you to solve for x! After you do that, you can note that all the angles in a triangle add up to 180, so 4x+10+x+34+angleA=180. When you find x, you can substitute that in.

If you need help with the addition property of equality for variables, here's an example - 5x+23=4x+3. Subtracting 3 from both sides, we get 5x+20=4x. Next, we can subtract 5x from both sides to get -x=20 and divide both sides by -1 to get x=-20.

Good luck, and feel free to ask with any questions!
4 0
3 years ago
Read 2 more answers
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