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nadezda [96]
3 years ago
13

Round each factor to the nearest ten and estimate the product of 12(22)

Mathematics
1 answer:
Alex73 [517]3 years ago
3 0

Step-by-step explanation:

12 is rounded to 10

22 is rounded to 20

20×10= 200

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Nathan has a sculpture in the shape of a pyramid. The height of the sculpture is 3 centimeters less than the side length, x, of
uysha [10]
Let
x-----------> <span>the side length of a pyramid square base
h-----------> t</span>he height of the sculpture <span>in the shape of a pyramid

we know that
h=(x-3)
Volume=162 cm</span>³
Volume=x² *(x-3)/3
then
x² *(x-3)/3=162----------> x³-3x²=486----------> x³-3x²-486=0
x³-3x²-486=0-------- <span>this equation can be used to find the length of the sculpture’s base 

using a graph tool-----------> </span>to find the solution
x=9 cm -------------> see the attached figure
h=(x-3)-----> h=9-3--------> h=6 cm

the answer is
<span>the length of the sculpture’s base is 9 cm
</span>the height of the sculpture is 6 cm

8 0
3 years ago
What's the length of AB?​
Nastasia [14]
Use the pythagorean theorem to solve this: a^2 + b^2 = c^2.
You already have a and b which are 3 and 4. Square them up and you will get 9 + 16 = c^2.
Add.
25 = c^2
Lastly, square root both sides.
5 = c
The length of AB is 5.
8 0
2 years ago
Plz help, my little brother is confused on a problem but he won't let me help
Vladimir [108]

Answer:

22 is the answer

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
If-2a &gt; 6, then<br> -a&gt;3<br> -a&lt;3<br> -a&lt;-3<br> -a&gt;-3
chubhunter [2.5K]

Answer:

a < - 3

Step-by-step explanation:

Given

- 2a > 6

Divide both sides by - 2, reversing the symbol as a result of dividing by a negative quantity, thus

a < - 3

5 0
3 years ago
I WILL AWARD BRAINLIEST!!<br> Find the value of x in each case.
kondor19780726 [428]

Angle D is equal to Angle B because AB and DE are parallel to each other.


AD is a straight line so the (2) 2x angles and 72 degrees need to equal 180.

Setting up the equation you have:

2x + 2x + 72 = 180

Simplify:

4x + 72 = 180

Subtract 72 from each side:

4x = 108

Divide both sides by 4:

x = 108 / 4

x = 27



5 0
3 years ago
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