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3 years ago

All square numbers ends with ---------------------------- at units place . please find answer

Mathematics

1 answer:

nexus9112 [7]3 years ago

4 0

Hello

All square numbers ends with 0,1,4,5,6 or 9 at units place.

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13) (3 + 7v2)(3 – 7v2)

Dovator [93]

Answer:

the answer to this problem is

9 - 21v^2 + 21v^2 - 49v^4

9 - 49v^4

Step-by-step explanation:

8 0

3 years ago

For sin2x+cosx=0, use a double-angle or half-angle formula to simplify the equation and then find all solutions of the equation

Archy [21]

Answer:

Step-by-step explanation:

Given is a trignometric equation in x, as

$sin2x+cosx=0$

TO make it in one trig ratio, we can replace sin2x as 2sinx cosx

WE get now

$2sinxcosx+cosx=0\\$

$cosx(2sinx+1)=0\\cosx=0, sinx =-0.5\\$

Principal solution is $x=\frac{\pi}{2} , \frac{-\pi}{6}$

x = ±π/2 + 2kπ, where k is any integer or

x=±pi/6 +k pi, where k is any integer.

General solution is

4 0

3 years ago

Solve for x. 2=4x-6

77julia77 [94]

Answer:

x = 2

Step-by-step explanation:

Rewrite the equation as 4x - 6 = 2

Move all terms not containing x to the right side of the equation:

Add 6 to both sides of the equation.

4x = 2 + 6

Add 2 and 6.

4x = 8

Divide each term by 4 and simplify.

Divide each term in 4x = 8 by 4.

$\frac{4x}{4} =\frac{8}{4}$

Reduce the expression by cancelling the common factors.

$x=\frac{8}{4}$

Divide 8 by 4.

x = 2

8 0

3 years ago

The first four terms of a sequence are shown below:

Marta_Voda [28]

Answer:

Step-by-step explanation:

Since each term is decreased by three $f(n+1)=f(n)-3$

7 0

3 years ago

Put brackets in the following to make it correct5-2x2+2x7-5

gayaneshka [121]

2.2=4 2.7=14 5-4+14-5=1+14-5=15-5=10 Good Luck!

5 0

3 years ago