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3 years ago

What is the first step to simplify the expression 64^42-[2(4-6)2]?

Mathematics

1 answer:

Marat540 [252]3 years ago

3 0

Simplify what's in brackets first, then move to what's in the parenthesis

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Solve and check the following system:<br> X +2y =4<br> 2x - y =3

Dima020 [189]

Step-by-step explanation:

$x + 2y = 4$

$2x - y = 3$

To solve this system of equation, let's multiply the second equation by two so both equations have a $2y$ :

$x + 2y = 4$

$4x - 2y = 6$

Next, let's add the two equations together to remove the $y$ and solve for $x$ :

$(x + 2y) + (4x - 2y) = 4 + 6$

$5x = 10$

$x = 2$

Now that we have the value of $x$ , we can plug it into either of the equations to solve for $y$ :

$x + 2y = 4$

$(2) + 2y = 4$

$2y = 2$

$y = 1$

$2x - y = 3$

$2(2) - y = 3$

$4 - y = 3$

$y = 1$

Therefore, the solution to this system of equations is $(2, 1)$ .

6 0

3 years ago

Read 2 more answers

LOTS OF POINTS!!!

Rudiy27

The numbers have no pattern, so there is no easy way to predict the number of candies

5 0

3 years ago

Which is the best estimate for 10 drops of liquid?

Fynjy0 [20]

Answer:

The answer is a A. I just took a short test about it.

Step-by-step explanation:

plz give brainliest and rating

7 0

3 years ago

How to find the total surface area of cross section solid factors and how to use phytagoras theorem to determine unknown side th

grandymaker [24]

Answer:

Okay, the answer would be.

6 0

4 years ago

Find the unit rate <br> 30 degree drop in 6 hours<br> Show your work

Lynna [10]

The unit rate is 5 degrees per hour.

Further explanation:

Unit rate is how much any quantity changes in one unit of time. For this purpose the change in quantity is divided by the time taken for that change.

Given

$Change\ in\ temperature= C= 30\ degrees\\Time=t=6 hours\\So,\\Unit\ rate= \frac{C}{t}\\Putting\ the\ values\\=\frac{30}{6}\\=5\ degrees\ per\ hour$

The unit rate is 5 degrees per hour.

Keywords: Formulas, Unit rate

Learn more about unit rate at:

#LearnwithBrainly

7 0

4 years ago