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slavikrds [6]
3 years ago
8

I need help on this anyone

Mathematics
2 answers:
DanielleElmas [232]3 years ago
5 0

Perimeter = 2L + 2W

Perimeter = 2(4x^2) + 2(y^2)

Perimeter = 8x^2 + 2y^2

x^2 - 7x^2 = -6x^2

-3x - -2x = -3x +2x = -x

8 - -1 = 8+1 = 9

Answer = -6x^2 -x + 9

9x^2 -4x - 3x^2 -2x

9x^2 - 3x^2 = 6x^2

-4x - -2x = -4x +2x = -2x

Answer = 6x^2 -2x

Crank3 years ago
3 0

Answer:

A.

C.

A.

Step-by-step explanation:

Problem 1.

In a rectangle, opposite sides are congruent.

Two sides have length 4x^2 and two sides have length y^2.

perimeter = sum of the length of the sides

perimeter = 4x^2 + 4x^2 + y^2 + y^2

perimeter = 8x^2 + 2y^2

Choice A.

Problem 2.

(x^2 - 3x + 8) - (7x^2 - 2x - 1) =

Remove the first set of parentheses because they are not needed.

= x^2 - 3x + 8 - (7x^2 - 2x - 1) =

Think of the negative side tot eh left of the second set of parentheses as a -1 that needs to be distributed. Multiply each term inside the second set of parentheses by -1.

= x^2 - 3x + 8 -7x^2 + 2x + 1

Combine like terms.

= -6x^2 - x + 9

Choice C.

Problem 3.

You know the sum and one of the added terms. Subtract the known added term from the sum to find the other added term.

9x^2 - 4x - (3x^2 - 2x) =

As above, distribute teh negative sign by the second set of parentheses.

= 9x^2 - 4x - 3x^2 + 2x

= 6x^2 - 2x

Choice A.

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lawyer [7]

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Step-by-step explanation:

7 0
3 years ago
Are 12/7 and 36/21 proportional
anastassius [24]

Answer:

Step-by-step explanation:

Cross multiply:

12 * 21 = 7 * 36

Simplifying

12 * 21 = 7 * 36

Multiply 12 * 21

252 = 7 * 36

Multiply 7 * 36

252 = 252

Add '-252' to each side of the equation.

252 + -252 = 252 + -252

Combine like terms: 252 + -252 = 0

0 = 252 + -252

Combine like terms: 252 + -252 = 0

0 = 0

Solving

0 = 0

Couldn't find a variable to solve for.

This equation is an identity, all real numbers are solutions.

(hope this helps can i plz have brainlist :D hehe)

5 0
3 years ago
Read 2 more answers
This is the full page plz help
Scorpion4ik [409]
Angle 1 is congruent to angles 3, 5, and/or 7

Angle 2 is congruent to angles 4, 6, and/or 8

Angle 5 is congruent to angles 7, 3 and/or 1

Angle 6 is congruent to angles 8, 4, and/or 2

Any of these answers could work for the blanks.


Angles 1 and 3, 2 and 4, 5 and 7, and angles 6 and 8 are congruent because they are vertical angles. They have the same vertex. Not all of these are congruent to each other if this doesn’t make sense. It’s only 1 is congruent to 3, 2 congruent to 4, etc.

Then you have your corresponding angles. These are ones like angles 2 and 6, then 1 and 5. You can also have 8 and 4, or 7 and 3 as corresponding angles

Transversal angles are different. This would be like angles 3 and 4, or 1 and 2. They are not always congruent. The only time they will be congruent is if they are both 90°. Transversal angles are essentially supplementary angles on the transversal line (the line that intersects through the set of parallel lines)












3 0
3 years ago
The distance between two subway stations is 3 miles. If a train
dolphi86 [110]

Answer: 3

Step-by-step explanation:

Divide every mile is one minute

6 0
3 years ago
PLZ HELP ME WITH GEOMETRY
Helga [31]

You just need to use your test-taking skill to eliminate the wrong answers here.

There is no such thing as a "Congruent Angles Postulate," so the last two choices can be eliminated.

The AA Similarity Postulate refers to triangles, not angles, so the second choice can be eliminated.

That only leaves the (correct) first choice.

5 0
3 years ago
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