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valkas [14]
2 years ago
5

Which of the following is a perfect square trinomial?

Mathematics
1 answer:
Bezzdna [24]2 years ago
3 0

Answer:

D.~4x^2-20xy+25y^2

Step-by-step explanation:

4x^2-20xy+25y^2\\\\=(2x)^2-2\cdot 2x \cdot 5y+(5y)^2\\\\=(2x-5y)^2

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Allen went to the movies and bought one jumbo popcorn and two chocolate chip cookies for $5.00. Antonio went to the same movie a
SVETLANKA909090 [29]

Answer:

cookie=0.5, popcorn=4

Step-by-step explanation:

1x+2y=5

1x+4y=6

cookie cost 0.5

popcorn cost 4

8 0
3 years ago
1st question: Reuben received 80 dollars. Write a signed number to represent this change.
lesya692 [45]

Answer:

1) +80

2) -1520

Step-by-step explanation:

Positive Signed numbers are used in real world situations to indicate the increase. Examples include; increase in weight, deposit of money into an account, increase in income, profit, height above sea level, etc. They are all represented by positive signed numbers.

Whereas, negative signed numbers show decrease. Examples include; loss of weight, withdrawal of money from an account, loans, liabilities, losses, temperature below zero degrees, height below sea level.

1) We are told that Reuben received 80 dollars. Thus, it means he received an increase in the amount of money he already had. Thus, the signed number will be +80.

2) We are told that A car corporation produced 1520 fewer cars this month than last.

Thus, the signed number will be negative since there is a decrease in number of cars.

Thus, signed number = -1520

7 0
3 years ago
Which proportion would you use to solve this problem?
erastovalidia [21]

Answer: 225

Step-by-step explanation:

225x0.04 is 9

4 0
3 years ago
The area of the top face of a cube is 49cm^3. What is the volume of th cube?​
Vlad1618 [11]

Answer:

V=2401cm^{3}

Step-by-step explanation:

The fact that the figure is a cube means all sides, faces, and corners are equal.

V=BHW

V=49cm^{2}(W)

V=49cm^{2}(49cm)\\ V=2401cm^{3}

3 0
3 years ago
What is the answer to number 11 plz show your work
photoshop1234 [79]
54x+14= 43x+36
54x-43x= 36-14
11x = 22 /11
X =2

54*2+14 -= 122
Both the same
And the other are 180-122 = 58

3 0
3 years ago
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