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stich3 [128]
3 years ago
14

Plz help only 5 questions

Mathematics
1 answer:
Serjik [45]3 years ago
4 0
Ask the questions plz!
You might be interested in
Simplify the following expression.
maksim [4K]

Answer:

Step-by-step explanation:

5x^3+8x-8x^2-5x^2+8x^3+7x

14x^3-14x^2+15x

5 0
3 years ago
Read 2 more answers
The average of the degree measures of all angles of an octagon is less than the average of the degree measures of all angles of
agasfer [191]

Octagon - 135 degrees

Decagon - 144 degrees


135 / 144 * 100% = 93.75%


Therefore it is 6.25% less


source 1728.com/polygon.htm



7 0
4 years ago
​​ What is the area of a rectangle with vertices at ​ (−4, 0) ​, ​ (−3, 1) ​ , (0, −2) , and (−1, −3) ? Enter your answer in the
Kobotan [32]
What we know:
Area=l x w
vertices at (-4,0),(-3,1), (0,-2),(-1,-3)
pythagorean formula=a²+b²=h²

What we need to find:
Area
 
Finding length:
Length of rectangle is from point (-4,0) to (-1,-3), found it by plotting the points on graph paper. Went down 3 units and right 3 units to go from one point to the other, these are the a and b in the pythagorean formula.

a²+b²=h²
(3)²=(3)²=h²
9+9=h²
18=h²
√18=√h²
√18=h

Finding width:
Width of rectangle is from point (-4,0) to (-3,1), found it by plotting the points on graph paper. Went up 1 unit and right 1 unit to go from one point to the other, these are the a and b in the pythagorean formula.

a²+b²=h²
(1)²+(1)²=h²
1+1=h²
2=h²
√2=√h²
√2=h

Now we can find area,
Area= l x w
        = √18 x√2
        =√36=6
Area=6

Remember that when we square root a number we get two solutions, one negative and one positive but since length, width and area are positive we only use positive solutions.
3 0
3 years ago
1/2 (8x-2) + 3/4 (8x-16) please help me with this
saul85 [17]
The Answer is 10x−13

Hope this helps!
6 0
3 years ago
Read 2 more answers
Cavalieri’s principle states that if two solids of equal height have equal cross-sectional areas at every level parallel to the
Musya8 [376]

Therefore, the formula for the volume of the sphere can be derived by writing an expression that represents the volume of C. The solid between the two cones and the cylinder

<h3>What is the Volume of a Sphere?</h3>

This refers to the capacity of a sphere, which is the maximum that can be contained in the sphere. This is denoted as V=4/3πr3

Hence, we can see that based on Cavalieri’s principle that states that if two solids of equal height have equal cross-sectional areas, then the two solids have equal volume.

Therefore, the two shaded solids both have a height of 2r units, and thus, to derive the function, we would have to write an expression that represents the volume of the solids between the  two cones and the cylinder

Read more about volume of spheres here:

brainly.com/question/12527681

#SPJ4

7 0
2 years ago
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