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Contact [7]
3 years ago
9

How to work this problem

Mathematics
2 answers:
In-s [12.5K]3 years ago
5 0
So in order to use the substitution method, you rearrange one to have a variable isolated, so i isolated y. Then you plug in and solve for the other variable, then plug in that to an equation to find the remaining variable.

Mazyrski [523]3 years ago
3 0
7x + 9y = - 27_________eq1
3x - y = 3__________eq2
Multiply eq 2 by 9 and then add the resulting eq with eq1.

eq2 x 9 gives us   27x - 9y = 27___________eq3
 
add eq3 with eq1 we get.
34x = 0.
where x=0/34
x=0.
substitute x into any of the above equations to get y.
substitute x into eq1. we get:
7(0) + 9y =-27
9y = -27
y= -27/9
y = -3.
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Que es el volumen (en matematicas)
Elan Coil [88]

Answer:

En matemáticas, el volumen se puede definir como el espacio tridimensional encerrado por un límite u ocupado por un objeto. Aquí, los bloques y los libros ocupan espacio. ... El volumen de un objeto se mide en unidades cúbicas como centímetros cúbicos, pulgada cúbica, pie cúbico, metro cúbico.

Step-by-step explanation:

espero que esto ayude.

7 0
2 years ago
Shante is calculating the amount of time it takes a rocket to get to the moon. The moon is around 239,000 miles from Earth. How
mel-nik [20]

Answer: 20 hours

Step-by-step explanation: We want to round our answer to the nearest hour, we know that the rocket can travel 200 miles per 1 minute, but we want to know first how many miles the rocket can travel per 60 minutes or 1 hour.

To find how many miles the rocket can travel at 60 minutes or 1 hour, simply multiply 200 x 60. 200 x 60 = 12,000 miles per hour.

Now, we want to find how many hours it would take for the rocket to travel from the earth to the moon.

Simply divide 239,000 by 12,000 to get the amount of hours it would take to reach the moon. 239,000/12,000 = about 20 hours.

So, it would take the rocket ship 20 hours to reach the moon from the earth.

3 0
3 years ago
Can you help me please?
Vinvika [58]

The range of a function are the possible outputs, here { 2, 6, 8 }.

Answer: D

5 0
3 years ago
PLEASE HELP I WILL GIVE YOU A BRAINLIEST! During a basketball game, Tom attempted 25 shots and made 9. He says he made 40% of th
postnew [5]

Answer:

Correct I think

Step-by-step explanation:

9 is nearly half of 25. (12.5) Half is equal to 50%. 40 is close to 50 and 9 is close to 12.5. So, he is correct. I think, hope this helps.

7 0
3 years ago
it takes 21 minutes for 5 people to paint 7 walls. how many minutes does it take 3 people to paint 10 walls
tensa zangetsu [6.8K]
21/7=3mins per wall with 5 people.
Because we assume that all of the people paint at the same rate, 3 X 5=15 mins for one person working alone.
15/3=5 mins per wall with 3 people X 10 people= 50 mins for 3 people to paint 10 walls.


The answer is 50 mins.
8 0
3 years ago
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