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Westkost [7]
2 years ago
11

I need to know what to do Add 13+(−21)+16.

Mathematics
1 answer:
gavmur [86]2 years ago
8 0

Answer:

use a calculator

Step-by-step explanation:

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What is 12 to the 2nd power
Alex Ar [27]

Answer: 144

Step-by-step explanation: The problem shown here can be read as "10 to the 2nd," oe "12 to the 2nd power."

The 12 is called the base and the 2 that is raised up is called the exponent.

The exponent of 2 tells us that we multiply our base 2 times.

So we have 12 · 12 which is 144.

The numbers that we multiply together are called factors so in this problem, we have 2 factors of 12.

8 0
2 years ago
13.) Write a Paragraph proof ( Thanks!!)
viva [34]

Step-by-step explanation:

Use triangle congruency:

BC=EC, AC=DC - Given

m∠DCE = m∠ACB because they are vertical angles

Therefore ΔABC ≅ ΔDEC because of Side-Angle-Side congruency

AB=DE because corresponding parts of congruent triangles are also congruent (CPCTC)

8 0
2 years ago
Solve for the variable then find the missing angle.
Goryan [66]
3x + 20 = 40 + 40
3x = 60
X = 20


V + 71 = 107
V = 36

6 0
2 years ago
Dan built a cubed shaped toy box of wood for his daughter. Each side of the toy box measures 2feet. How much wood did Dan use to
ankoles [38]

Answer:

12 feet is what i believe is the answer

Step-by-step explanation:

Brainleist :)

8 0
2 years ago
Solve -1 < x + 1 ≤ 6
andrey2020 [161]

Answer:

-2<x≤5

Step-by-step :

-1<x+1≤6 So fisrt what every we do to one side we must do to the other. In this case it's a bit different since we are dealing with inequalities.

-1<x+1≤6 I would start off by isolating x in the middle.

-1<x+1≤6 I subtracted 1 from all three sides.

-1     -1   -1

Now your equation should look like this:

-2<x≤5  Now there is really nothing much we can do here since we were just trying to get x by its self.

Answer : -2<x≤5

7 0
2 years ago
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