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Travka [436]
3 years ago
8

You have to complete at least 10 physics problems and math problems within 2 hours before you playing video games. It will take

you 20 minutes to complete a physics problem and 10 minutes to complete a math problem. Write a system of inequalities to express this situation. What is the most possible number of physics problems you can complete and still meet the requirements?
Mathematics
1 answer:
Ghella [55]3 years ago
5 0

Answer:2

Step-by-step explanation:

Given

Physics problem requires 20 min

Math problem require 10 min

suppose x question of Physics and y questions of Math are done

so according to the question

x+y\geq 10\ldots 1

Time require for x Physics problem =20 x

Time require for y Math problem =10 y

so,

20 x+10 y\leq 120\ldots 2

On solving (1) and (2)

we get x=2 and y=8

Maximum no of Physics question which can be solved is 2

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Ndicate in standard form the equation of the line through the given points. P(0, -4), Q(5, 1)
tatuchka [14]

Answer:

y=x-4

Step-by-step explanation:

Standard form is y=mx+b

the coordinates (0, -4) tell you that the y intercept is at -4 which means b will be -4. To find slope you have to find the change in y over the change is x. 1--4=5 and 5-0=5. 5/5 is 1 so the slope, or m, is 1. x stays the same since it's the variable. it'll become y=1x-4 and since you don't have to place a coordinate of one in front of a variable, you can just write it as y=x-4

7 0
3 years ago
Which system of equation cannot be directly solved by applying the elimination method?
lara31 [8.8K]

I think the answer is C

5 0
2 years ago
Evaluate ab if a = -16 and b = -5.
Kaylis [27]

9514 1404 393

Answer:

  80

Step-by-step explanation:

ab is the product of 'a' and 'b'. For the given values, that is the product ...

  ab = (-16)(-5) = 80

_____

When the number of minus signs is even, the resulting product is positive.

8 0
3 years ago
You spin a spinner labeled 1-10 evenly. what are the chances you will get an odd number?
mr Goodwill [35]

Answer:

1/2

Step-by-step explanation:

8 0
2 years ago
23.
Crazy boy [7]

Answer:

The number that cannot be the largest possible 6-digit number is;

(D) AAABCB

Step-by-step explanation:

From the question, we have;

A, B, and C = Distinct digits, therefore, A ≠ B ≠ C

The number of digits in the number to be formed = 6 digits

The number of 'A' in the number to be formed = 3

The number of 'B' in the number to be formed = 2

The number of 'C' in the number to be formed = 1

We have;

When A > B > C

The largest possible number = AAABBC

When C > A > B

The largest possible number = CAAABB

When B > A > C

The largest possible number = BBAAAC

When A > C > B

The largest possible number = AAACBB

Therefore, given that when A > B > C, the largest possible number = AAABBC, we have;

AAABBC > AAABCB, because B > C, therefore, within the tens and unit of the two 6 digit numbers, we have, BC > CB

∴ AAABBC > AAABCB and <u>AAABCB</u>, cannot be the largest possible 6-digit number

3 0
2 years ago
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