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Simora [160]
2 years ago
12

Solve the system of equations below. y=x-1 x+y=3

Mathematics
1 answer:
Airida [17]2 years ago
4 0

Answer:

x=2, y=1

Step-by-step explanation:

y=x-1

y=3-x

x-1=3-x

2x=4

x=2

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∠A and \angle B∠B are supplementary angles. If m\angle A=(x-16)^{\circ}∠A=(x−16) ∘ and m\angle B=(3x+28)^{\circ}∠B=(3x+28) ∘ , t
GalinKa [24]

Answer:

  ∠A = 26°

Step-by-step explanation:

Supplementary angles total 180°.

  ∠A +∠B = 180°

  (x -16)° +(3x +28)° = 180°

  4x° + 12° = 180°

  x° +3° = 45°

  x° = 42°

  ∠A = (x -16)° = 42° -16°

  ∠A = 26°

3 0
3 years ago
Monica has been saving her spare change. So far she has saved 40 coins for a total of $6.25. Some of the coins are quarters (25
neonofarm [45]

Answer:

10 quarters

40 dimes

Step-by-step explanation:

q + d = 40

25q + 10d = 625

25 > 10

q < d

25(10) = 250

10(40) = 400

$2.50 + $4.00 = $6.00

7 0
3 years ago
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bulgar [2K]

Answer:145

Step-by-step explanation:x-5+3x+25=180

4x+20=180 4x=160 x=40. <k=120+25=145

4 0
2 years ago
What is the value of the expression shown? 4(-2) + (-10) + 3(-8)
Vlad [161]

Answer:

-42

Step-by-step explanation:

1. 4(-2)

2. 3(-8)

3. -8 + -10 + -24

4. cobine like terms

5. -42

7 0
2 years ago
Which expression is equivalent to -2v+(-4)+(-3v)? A -5 B 7v C -6v+5 D -5v+ 4
inessss [21]

Answer:

-5v+4

Step-by-step explanation:

Remove the parentheses and combine the like terms:  

-2v + (-4) + 8 + (-3v)

-2v -4 + 8 -3v    [Remove parentheses]

-5v +4                [Combine like terms]

<u>-5v +4    </u>  

3 0
2 years ago
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