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rusak2 [61]
2 years ago
5

3) Which is an expression?

Mathematics
1 answer:
bixtya [17]2 years ago
5 0

Answer:

(A) x(3+5)  is an expression. The rest are equations.

Step-by-step explanation:

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What is the value of x?​
Mashcka [7]

Answer:

120

Step-by-step explanation:

Because we know that the line opposite of the right angle is flat, we know that 60 plus x must equal 180. Rewriting this gives us 180 - 60 = x.

Now, we can just solve for x.

x = 120.

8 0
3 years ago
A train travels from station A to station B. If the train leaves station A and makes 75 km/hr, it arrives at station B 48 minute
SSSSS [86.1K]

Answer:

  • A) 290 km
  • B) 4 hours
  • C) 72.5 km/h

Step-by-step explanation:

Let distance be d and time t

<u>At 75 km/h speed the distance is</u>

  • d = 75(t - 48 min) = 75(t - 48/60 hours)

<u>At 50 km/h speed the distance</u> is

  • d = 50t + 40

<u>Since the distance is same, we get the equation:</u>

  • 75(t - 48/60) = 50t + 40
  • 75t - 75*4/5 = 50t + 40
  • 75t - 60 = 50t + 40
  • 75t - 50t = 40 + 60
  • 25t = 100
  • t = 4 hours

<u>A) The distance between A and B</u>

  • d = 50*5 + 40 = 290 km

<u>B) Time is </u>

  • 4 hours as found above

<u>C) The speed = d/t</u>

  • Speed = 290/4 = 72.5 km/h

6 0
3 years ago
Which graph represents the reflection in the x-axis of the curve y = cos x
Ber [7]

Answer:

The curve represented by Green color Dotted Lines in the attached figure represents the Reflection in x-axis of the curve y = cos x.

Step-by-step explanation:

As we know, the value of cosx lies between (-1,1) and its graph is a curve. Its value keeps on varying between -1 and 1 only depending on the value of x.

The value of y is \text{0} at x = \frac{\pi}{2}. Few values are labeled in the figure attached in the answer. The value y is 1 at x = 0.

The curve shown in blue color solid line represents the curve of y = cos x.

And the curve shown in the dotted green color in the attached figure represents the reflection in the x-axis.

3 0
2 years ago
What's 16/12 + 11/6?
mina [271]

Answer:

It's 3 1/6 :) I hope it helps

5 0
2 years ago
Look at image please help me
nadezda [96]
The answer is x/y that’s it
3 0
2 years ago
Read 2 more answers
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