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Monica [59]
3 years ago
12

Which is an example of a linear equation?

Mathematics
1 answer:
kobusy [5.1K]3 years ago
5 0

Answer:

Step-by-step explanation:

A. (x, y)  is not an equation.

B. 2 + 7 = 9  Not a linear equation, as there is no variable.

C. 3x + 5 = 20  This is a linear equation.

D. y = 2x + 1  This is a linear equation.

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Show problem set up for full credit.
ICE Princess25 [194]

Answer:

∠ QPR = 125°

Step-by-step explanation:

the angles subtended by 2 congruent arcs are congruent , that is

5x = 4x + 25 ( subtract 4x from both sides )

x = 25

Then

∠ QPR = 4x + 25 = 4(25) + 25 = 100 + 25 = 125°

5 0
2 years ago
Which number, when placed in the box, will make the equation true?<br> _^2 =square root of 64
velikii [3]
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4 0
3 years ago
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At 3:30 p.m., Berto’s train was 34 miles past the egg farm, traveling at an average speed of 85 miles per hour. At the same time
timurjin [86]

E=egg farm

x=distantce between  the Berto´s trains and the meeting point.

t=time where the trains meet up

⇒110 miles/h                                          ⇒85miles/h

[---------------------------E----------------------]-------------------------------------X

[............12 miles.......][........34 miles.....][------------ x ----------------------]

distance between Berto´s train and Eduardo´s train=

=12 miles+34 miles=46 miles.

S=d/t      ⇒d=S*t

S=seed

d=distance

T=time

Eduardo´s train;

46 miles+x=t*110 miles/h  ⇒x=t*110 miles/h-46 miles  (1)

Berto´s train;

x=t*85 miles/h  (2)

With the equations (1) and (2) we suggest this system equations:

x=t* 110 miles/h-46 miles

x=t*85 miles/h

we solve this system equiations :

t*110 miles/h-46 miles=t*85 miles/h

110t miles/h-85t miles/h=46 miles

25 t miles/h=46 miles

t=46 miles/25 miles/h=1,84 hour  (≈1 hour, 50 minutes, 24 seconds)

x=t*85 miles/h=156,4 miles

Solution: 1,84 hour

3 0
3 years ago
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Lamar bought a table on sale for $399. This price was 24% less than the original price. What was the original price?
xxMikexx [17]

$525

Hope this helps ya out

4 0
3 years ago
Plz help me thank you!!!!!!
damaskus [11]

Answer:

h = 9.674

Step-by-step explanation:

8 0
3 years ago
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