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3 years ago

Here is a picture of a cube, and the net of this cube.

Mathematics

1 answer:

Leviafan [203]3 years ago

8 0

Answer:

726 cm²

Step-by-step explanation:

The cube has 6 square faces , then

surface area = 6 × area of 1 square face

SA = 6 × 11² = 6 × 121 = 726 cm²

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What’s the answer cause I need it bad

pentagon [3]

Answer: $(-9,-3)$

Step-by-step explanation:

Given the following system of equations:

$\left \{ {{2x=-78-20y} \atop {-x=-51-20y}} \right.$

In order to solve the System of equations, you can use the Substitution method. The steps are:

1. You can solve for "x" from the second equation:

$-x=-51-20y\\\\x=51+20y$

2. Substitute the equation obtained into the first original equation:

$2x=-78-20y\\\\2(51+20y)=-78-20y$

3. Now you must solve for "y":

$102+40y=-78-20y\\\\40y+20y=-78-102\\\\60y=-180\\\\y=\frac{-180}{60}\\\\y=-3$

4. Substitute the value of "y" into the equation $x=51+20y$ and evaluate:

$x=51+20(-3)\\\\x=51-60\\\\x=-9$

Then, the solution is:

$(-9,-3)$

8 0

3 years ago

Is the equation a linear function?<br> y = -x + 3 +

7nadin3 [17]

A linear function is y=mx + b so yes (assuming + sign at end is accidental)

5 0

3 years ago

2(x + 1) - 3x=? What is it?

Vera_Pavlovna [14]

2(x + 1) - 3x = 0
2x + 2 - 3x = 0
-x + 2 = 0
-x = -2
Divide -1 on both sides
x = 2

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3 years ago

What is the value of 3/7x0.1 divided 5/21

hjlf

Answer:

0.18

Step-by-step explanation:

get a calculator and divide them

5 0

3 years ago

Read 2 more answers

3X+2Y=5Y+2X-11 (Solve for X) <br> How do i show my work for this equation?

dimulka [17.4K]

Solve for x by simplifying both sides of the equation, then isolating the variable.
x = 3y − 11

4 0

3 years ago