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DochEvi [55]
3 years ago
7

Determine whether (1, 1) and (-1,4) are solutions to 2x + 5y < 7.​

Mathematics
1 answer:
VladimirAG [237]3 years ago
5 0


Start by plugging both points within each parenthesis into x and y. Do it interchangeably also!

2(1)+5(1)= 7, which means it isn’t going to prove true. Because 7 isn’t greater than 7.
Since both are 1 it is already interchangeable.

2(-1)+5(4)=-2+20, which is 18. This means the solution doesn’t work, because 7 isn’t greater than 18.

2(4)+5(-1)=8+-5, which is 3. This one must work because 7 is greater than 3!

Please vote my answer brainliest! Thanks.
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Plz help brain fam!
Liono4ka [1.6K]
What would make finding the answer a bit easier, is converting them into improper fractions. You would turn that first fraction to \frac{-9}{4} and the second fraction to \frac{-3}{2}. (You are dividing a negative by a negative, therefore, your answer would be a positive.

Let's follow the procedure of keeping, switching, and flipping. You keep the first improper fraction, switch the division sign to a multiplication sign, and flip the second fraction. That would make it : \frac{-9}{4} ×\frac{-2}{3}.

You multiply the 9 and the 2, you get 18. You multiply the 3 and the 4, you get 12. That makes it \frac{18}{12}. This, converted to a mixed fraction, makes 1\frac{6}{12}., which is the same as  1\frac{1}{2}. Your answer is the SECOND CHOICE.
8 0
3 years ago
Read 2 more answers
Somebody please do this on paper then upload this It shouldn’t take a week for somebody to not answer something and still won’t
Svet_ta [14]

Answer:

im sorry man teach me how to do this as best as u can

7 0
3 years ago
A cube has a volume of 36cm3. What is the length of one side of the cube
umka2103 [35]

Answer:

Approximately 3.3 cm

Step-by-step explanation:

The volume of a cube is given by

V =s^3 where s is the side length

36 = s^3

Take the cube root of each side

36^ 1/3 = s^3^1/3

3.301927249 = s

Approximately 3.3 cm

8 0
3 years ago
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Apply the distributive property to create a equivalent expression: (m-3+4n)x(-8)
mestny [16]

Answer:

(m - 3 + 4n)

Step-by-step explanation:

Please use * or · to indicate multiplication, not the letter "x."

Try this:  Multiply (m - 3 + 4n) by -8 (distributive property for multiplication);

-8(m - 3 + 4n) = -8m + 24 - 32n

3 0
4 years ago
Pam saw a koala bear at the zoo. It had a mass of 7,000 grams. How many kilograms is 7,000 grams?
Vinvika [58]
7 kilograms are in 7000 grams
3 0
3 years ago
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