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ArbitrLikvidat [17]
3 years ago
11

Question 22 of 25

Mathematics
1 answer:
bekas [8.4K]3 years ago
8 0

Answer:

36 pi

Step-by-step explanation:

Aera of sphere is : 4 *pi *r^2

A=4 *pi*9=36pi=113

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Help please on linear math
umka21 [38]

Answer:

D

Step-by-step explanation:

y=\frac{-9x-5}{-8}

factoring out a negativey=\frac{9x+5}{8}

3 0
3 years ago
Read 2 more answers
Give an example of undefined term and defined term in geometry
vovangra [49]
<span>These are undefined terms:1.plane2.point3.line.
These are defined </span><span>terms: 1.ray 2.union of sets 3.space 4.subset 5.set 6.proper subset 7.opposite</span><span><span>
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4 0
4 years ago
The perimeter of a rectangular field is 340 yd. The length is 10 yd longer than the width. Find the dimensions.
Thepotemich [5.8K]
Set up equations like this (keep in mind that perimeter of a rectangle is all sides added up, so two lengths and two widths):

2l + 2w = 340
l = w + 10

Plug (w + 10) in for l in the first equation and solve for w:

2(w + 10) + 2w = 340
2w + 20 + 2w = 340
4w + 20 = 340
4w = 320
w = 80

The width of the field is 80 yd.  Plug 80 in for w in either equation:

l = 80 + 10
l = 90

The length of the field is 90 yd.
4 0
3 years ago
(2+3i)(1-2i)<br><br> What is the product of the complex number
igomit [66]

Answer:

(2+3i)(1-2i)  = (8-i)

Step-by-step explanation:

The given complex number is :

Z = (2+3i)(1-2i)

We need to find the product of the complex number

Z=2(1)+2(-2i)+3i(1)-6i^2\\\\=2-4i+3i-6i^2

We know that, i^2=-1

Z=2-i-6(-1)\\\\=2-i+6\\\\=8-i

Hence, the product of the complex number is (8-i).

3 0
3 years ago
If 4x = 28, find the value of 29 - 5x
7nadin3 [17]

Answer:

-6

Step-by-step explanation:

28/4=7

7*5=35

29-35=-6

8 0
3 years ago
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