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nevsk [136]
2 years ago
7

Add x³-2x²y+4xy²-y³,2x³-5xy²+3x²y-4y³​

Mathematics
1 answer:
Harrizon [31]2 years ago
6 0

Answer:

Step-by-step explanation:

.......................................

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Which value of K will make x^2-1/4x+k a perfect square trinomial?
lakkis [162]
To find it it is
ax^2+bx+c
if the first term (a) is 1 then c=b/2
b=-1/4
(-1/4)/2=-1/4 times 1/2=-1/8

k=-1/8


4 0
3 years ago
Three balls are packaged in a cylindrical container as shown below. The balls just touch the top, bottom, and sides of the cylin
sp2606 [1]

Answer:

3,451 cm³

Step-by-step explanation:

The ball is a sphere.

Formula for finding the volume of a sphere = ⁴/3*πr³

Volume of the 3 balls = 3(⁴/3*πr³)

Where,

radius (r) = ½ of diameter = ½(13) = 6.5 cm

Plug in the values into the formula:

Volume of the 3 balls = 3(⁴/3*π*6.5³)

= 4*π*274.625

= 3,451.03953 ≈ 3,451 cm³

3 0
2 years ago
How to solve a simultaneous equation
Diano4ka-milaya [45]
Http://mathsfirst.massey.ac.nz/Algebra/SystemsofLinEq/EMeth.htm this website explains it well 
6 0
3 years ago
Original price: $32<br> Discount: ?<br> Sale price: $8
Sati [7]

Answer:  75%

Step-by-step explanation:

32 dollars times 75% = 24

32 - 24 = $8

6 0
3 years ago
Henry knows that the circumference of a circle is 18mc006-1.jpg inches. What is the area of the circle?
lesantik [10]
The complete question is:
Henry knows that the circumference of a circle is 18π inches. What is the area of the circle?

Solution:
Circumference (C) of the circle can be written as:

C=2 \pi r \\ \\ 18 \pi =2 \pi r \\ \\ r=9

Using this value of radius, we can find the Area(A) of the circle.

A= \pi  r^{2}  \\  \\ &#10;A= \pi (9)^{2}  \\  \\ &#10;A=81 \pi

Therefore, area of the circle having a circumference of 18π inches will be 81π inches²
5 0
3 years ago
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