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ra1l [238]
2 years ago
11

What is the surface area of a cube with side lengths of 3 centimeters

Mathematics
2 answers:
zaharov [31]2 years ago
7 0

Answer:27

Step-by-step explanation:

lara [203]2 years ago
4 0

Answer: 54cm(squared)

Each side has surface area 3cmx3cm=9cm(squared). And there are 6 sides of a cube so it has total surface area of 9cm(squared)x6=54cm(squared)

Hope that makes sense! If you'd like any more help with maths, I'd be happy to offer online tuition. You can find me at: www.birchwoodtutors.com

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A salesman sold twice as much pears in the afternoon than in the morning. If he sold 360 kilograms of pears that day, how many k
serg [7]

Answer: 240 kg

Step-by-step explanation: Divide 360 by 3. That would equal 120. 120 times 2 equals 240

6 0
3 years ago
Can someone help me with this proof
maksim [4K]

Step-by-step explanation:

Given :

Given that lines a and b are parallel, angles 1 and 5 are congruent because they are corresponding angles, and angles 1 and 4 are congruent because they are vertical angles

To find : by which property are angles 4 and 5 congruent

Solution :

We know that if two parallel lines are cut by a transversal, then the pairs of alternate interior angles are congruent.

Also, we know that if two things are equal to the same thing then they are equal to each other . In this case, we can say that if two angles are congruent to a third angle, then they are congruent to each other. As angles 4 and 5 are both congruent to angle 1, they are congruent to each other but angles 4 and 5 are alternate interior angles. So, if parallel lines have a transversal, alternate interior angles are congruent.

8 0
2 years ago
Solve the right triangle. Round decimal answers to the nearest tenth.
ZanzabumX [31]

Answer:

c=√a²+b²

Step-by-step explanation:

You can use this equation to solve it.

8 0
2 years ago
Which of the following should you do first when solving the equation 2x-7=3x-2(x+8)
Georgia [21]

Answer:

multiply 3x-2(x+8)

Step-by-step explanation:

PEMDAS

also you must simplify both sides to solve this problem and that's the first step to simplifying this side (the other one is simplified)

3 0
2 years ago
Read 2 more answers
Consider the inequality -5(x+7)<-10 write inequality representing a solution for x
dedylja [7]
Perform indicated multiplication on left side first...

-5x-35<-10  add 35 to both sides

-5x<25  divide both sides by -5 (you must reverse sign because of division by a negative value too!)

x>5  or if you prefer...

x=(5, +oo)
6 0
3 years ago
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