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ad-work [718]
3 years ago
13

Calculate:You are the best!!!!!

Mathematics
1 answer:
Allushta [10]3 years ago
7 0
Thanks so much your nice!
You might be interested in
X-2y+z=5 <br>3x+3y-2z=-6 <br>2x-y+3z=11 <br>find x+y+z
BartSMP [9]
      x - 2y + z = 5   | *2
 ⇒ 2x - 4y+ 2z=10
     3x + 3y - 2z = - 6     } I sum up these relations
--------------------------------
    2x+3x - 4y+3y+2z-2z=10-6
     5x - y = 4       (1)

    3x + 3y - 2z = - 6   | *3         ⇒ 9x + 9y - 6z = - 18
    2x - y + 3z = 11     | *2         ⇒ 4x - 2y + 6z= 22       I sum up these
                                              ----------------------------------
                                                ⇒ 9x+4x+9y-2y-6z+6z= 4
                                                     13x+ 7y= 4     (2)
I write (1) and (2)
5x - y = 4   | *7
35x - 7y= 28
13x+7y=4
48x = 32
x= 32/48=4/6 ( 32:8=4, 48:8=6)
x= 2/3
5x-y=4, 
5*2/3-y=4
y=10/3 -4=10/3-12/3=-2/3
⇒ y= - 2/3
x - 2y + z = 5
2/3 - 2*(-2/3)+z=5
2/3+4/3+z=5
6/3+z=5
2+z=5
z=3
x+y+z=2/3-2/3+3=3

x+y+z=3







3 0
3 years ago
Original cost of a book: $13.95; markdown by 2/3
lora16 [44]

The price would be $9.30

8 0
4 years ago
Read 2 more answers
Use the formula to solve the problem. Round to the nearest hundredth.
Zepler [3.9K]

Answer:

Volume of sphere = 4.186 cubic inches

Step-by-step explanation:

Radius of sphere = r = 1 inch

Volume of sphere = ?

The formula used is: Volume\:of\:sphere=\frac{4}{3}\pi r^3

Putting value of radius and π and finding volume:

Volume\:of\:sphere=\frac{4}{3}\pi r^3\\Volume\:of\:sphere=\frac{4}{3}\times 3.14\times (1)^3\\Volume\:of\:sphere=\frac{4}{3}\times 3.14\times (1)^3\\Volume\:of\:sphere=4.186 \:cubic\:in

So, Volume of sphere = 4.186 cubic inches

7 0
3 years ago
Identify the value of (t): Becky is buying a house and will be financing it. She will borrow $155,000 at 4.5% for a quarter of a
Vesnalui [34]

Answer:

$329,375

Step-by-step explanation:

first take 155000 x 4.5% = 6975

take 6975 × 25 years = 174,375.

t or the total cost is 155,000 + 174,375 = $329,375

4 0
3 years ago
The volume of square pyramid is 25 cubic inches. You want the height to be 2 inches less than the edge of the base. What are the
hjlf

Step-by-step explanation:

7 0
3 years ago
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