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faltersainse [42]
3 years ago
15

What is 2/4 +(-8/4) i'm a little stuck

Mathematics
2 answers:
Kaylis [27]3 years ago
6 0
<span>the answer should be
2/4 +(-8/4)= -1.5</span>
Bumek [7]3 years ago
6 0
Well adding a negative to a positive is basically subtraction. 2/4+-8/4 would be -6/4. 
This is because 2 isn’t enough to get rid of -8, so we end up with -6.

Oh and -6/4 can be simplified to -3/2.
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At a resting pulse rate of 75 beats per minute, the human heart typically pumps about 73 mL of blood per beat. Blood has a densi
Kaylis [27]

Answer:

There is approximately 5.475 liters of blood in the body.

Step-by-step explanation:

At a resting pulse rate of 75 beats per minute, the human heart typically pumps about 73 ml of blood per beat.

73 ml in liters = 73\times0.001=0.073 liters

Now, 75 beats/min x  0.073 liters/beat  = 5.475 liters/min

And 5.475 liters/min x 1 min/body = 5.475 liters/body

Hence, there is approximately 5.475 liters of blood in the body.

7 0
3 years ago
Form the greatest and the smallest 4-digit number using the following digits
MrMuchimi
Greatest =9998

Smallest=8889

Thanks!
6 0
3 years ago
Which set represents the same relation as the graph below?
Svetllana [295]

Answer:

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5 0
2 years ago
If a projectile is launched vertically upward from 800 ft above the ground with an initial velocity of 80 ft per second, its hei
tiny-mole [99]

Hello!

10 seconds to return to the ground.

7 seconds to reach 576 feet above the ground.

Find the amount of time taken to reach the ground by setting the equation equal to 0:

0 = -16t² + 80t + 800

Factor out -16 from the equation:

0 = -16(t² - 5t - 50)

Factor the terms inside of the parenthesis:

0 = -16(t - 10)(t + 5)

Find the zeros:

t - 10 = 0

t = 10

t + 5 = 0

t = -5

Time can only be positive in this instance, so the correct answer is 10 sec.

Find the time by substituting in 576 for the height:

576 = -16t² + 80t + 800

Subtract 800 from both sides:

-224 = -16t² + 80t

Rearrange:

0 = -16t² + 80t + 224

Simplify:

0 = -16(t² - 5t - 14)

0 = -16(t - 7)(t + 2)

t = 7 seconds.

8 0
3 years ago
The measures of two angles are 4x° and (2x + 12)°. What must be true if x = 13
tatiyna
Yeas the answer is B
5 0
3 years ago
Read 2 more answers
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