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Debora [2.8K]
3 years ago
8

What are the like terms in the expression below?

Mathematics
1 answer:
natka813 [3]3 years ago
4 0

Answer:

D. -4m, 7m

Step-by-step explanation:

Like terms are terms that can be added, subtracted, divided, and multiplied together. Since -4m and 7m both have the variable m, they are like terms. 3mn is not a like term because it has two variables which makes it different form -4m and 2n. It is its own term.

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In the lab, Eric has two solutions that contain alcohol and is mixing them with each other. He uses 3 times as much Solution A a
Oduvanchick [21]

Answer:

Solution A = 2100

Solution B = 700

Step-by-step explanation:

Given that:

Let :

Millimeter of solution A = a

Millimeter of solution B = b

% alcohol, solution A =. 20% = 0.2

% alcohol solution B, = 14% = 0.14

Resulting millimeter of. Alcohol = 518

a = 3b - - - (1)

0.2a + 0.14b = 518 - - - - (2)

Put a = 3b in (2)

0.2(3b) + 0.14b = 518

0.6b + 0.14b = 518

0.74b = 518

b = 518 / 0.74

b = 700

a = 3b

a = 3(700)

a = 2100

5 0
3 years ago
Solve the equation a = m - n for the variable n. *
mart [117]

Answer:

n = m-a

Step-by-step explanation:

a = m-n

a+n =m

n = m-a

3 0
3 years ago
The measure of two complementary angles are in the ratio 1 : 4. What are the degree measures of the two angles?
AlladinOne [14]
Since the angles are complementary, they add to 90°. So we can write the equation:
x represents the first angle, and 4x represents the second
x+4x=90
5x=90
x=18 

So the first angle is 18° and the second is 72° (18*4)

Hope this helps
6 0
3 years ago
Which is greater than 4?<br><br>(a) 5,<br><br>(b) -5,<br><br>(c) -1/2,<br><br>(d) -25.​
Allisa [31]

Answer:

<h2>(a) 5</h2><h3>> 5 is greater than 4</h3>
7 0
3 years ago
Approximately how much more quickly (in mph) does a pilot traveling 400 mph and rising at an angle of 30o gain altitude versus a
REY [17]
We can find the height of the altitude by the ratio of sin. See my attachment.
sin of angle = side in front of the angle / hypotenuse
sin x = height/distance

If the two pilot is rising in an hour, then the first distance is 400 miles, the second distance is 300 miles.

Find the height of first pilot
height/distance = sin x 
height/400 = sin 30°
height = sin 30° × 400
height = 1/2 × 400
height = 200

Find the height of second pilot
height/distance = sin x 
height/300 = sin 40°
height = sin 40° × 300
height = 0.642 × 300
height = 192

So the first pilot traveling 400 mph with 30° is more quickly to reach high altitude than the second pilot traveling 300 mph with 40°

3 0
3 years ago
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