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Nataliya [291]
3 years ago
10

What is -1 + (4 + 9) = (-1 + 4) + 9 property?

Mathematics
2 answers:
AfilCa [17]3 years ago
8 0

Answer:

12=12

Step-by-step explanation:

Hatshy [7]3 years ago
7 0

Answer:

12=12

Step-by-step explanation:

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15 point help asap marking brainlest!!!!!!!!!!!!!!
ziro4ka [17]

slope =(y2-y1)/(x2-x1)

m=(-1-5)/(1--1)

m=-6/2

m=-3

y-y1=m(x-x1)  point slope form

y-5 = -3 (x--1)

y-5 = -3 (x+1)

distribute

y-5 = -3x -3

add 5 to each side

y = -3x+2

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Plz Help, and solve. Show your work. I will give Brainliest. A - 7 = -13 solve and show your work 10X - 8 = 9X + 8 Can a right t
likoan [24]

Answer:

A - 7 = -13

Add 7

A = -6

10X - 8 = 9X + 8

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In a right triangle, where a and b are the shorter sides, and c is the longer side a^2+b^2=c^2

Thus, plug in the values.

12^2+16^2=20^2

144+256=400

400=400.

Because the equation is true, 12, 16, and 20 can be a right triangle

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3 years ago
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Find the value of x. Round to the nearest tenth <br> PLEASE HELP
ololo11 [35]

Answer:

x = 38.2°

Step-by-step explanation:

<u> sin 27° </u>  =  <u>  x°  </u>

    11             15

15 · (sin 27°) = 11 · x°

cross-multiply:

6.81 = 11x

6.81 / 11 = x

x = 0.619

sin^-1 (0.619) = 38.2°

3 0
2 years ago
40% of _ =$10:00<br><br> A $0.25<br> B $4.00<br> C $25.00<br> D $40.00<br> E none of these
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B $4.00
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Let f(x) = 3x + 2 and g(x) = 4–5x. Find f(x) + g(x)
Vadim26 [7]

Answer:

-2x + 6

Step-by-step explanation:

Step 1: Define

f(x) = 3x + 2

g(x) = 4 - 5x

Step 2: Find f(x) + g(x)

3x + 2 + 4 - 5x

-2x + 6

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3 years ago
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