3 years ago

Which of these systems of linear equations has an infinite number of solution

Mathematics

1 answer:

Lisa [10]3 years ago

6 0

Answer:

Step-by-step explanation:

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Factor: m^2 - 20m - 21

Anton [14]

Answer: (m-21)(m+1)

Step-by-step explanation:

To factor this trinomial, find two numbers that multiply to -21 and add to -20:

(-21)(1)=-21

-21+1=-20

They are -21 and 1.

Add -21 and 1 to m to get both factors:

(m+(-21)) and (m+1)

(m-21) and (m+1)

Multiply them to get the answer:

(m-21)(m+1)

4 0

3 years ago

9a - ab + 5b if a = 2 and b = 7

Anit [1.1K]

9a-ab+5b
9(2)-(2)(7)+5(7)
18-14+35
39

8 0

3 years ago

Find the number of terms in the sequence and find the sum of the sequence: 5+9+13+...+145

SashulF [63]

145-13-9-5 that what your looking for

8 0

2 years ago

Katy has 15 flamingos in her front yard and 9 flamingos in her backyard. Which equation shows one way to find how many fewer fla

Svetlanka [38]

Answer:

Step-by-step explanation:

I need the answer too help

3 0

3 years ago

Read 2 more answers

what is the area and perimeter of the figure with the given vertices? (7,8) , (-5, -8) , (7,-8) , (-5,8)?

MArishka [77]

Answer:

perimeter: 56 units
area: 192 square units

Step-by-step explanation:

We assume you're interested in the convex polygon, so the given vertices are not listed in order around the figure.

The figure is 12 units by 16 units, so has a perimeter of ...

P = 2(L +W)

P = 2(16 +12) = 56 . . . . units

and an area of ...

A = LW

A = (16)(12) = 192 . . . . square units

6 0

2 years ago