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3 years ago

Find all solutions to the equation. (sin x)(cos x) = 0

1 answer:

6 0

Hello :
(sin x)(cos x) = 0
sinx = 0 or cosx= 0
all solutions in : R
1) sinx= 0 : x = kπ...... k∈ Z
2) cosx= 0 : x= π/2 + kπ ....k∈ Z

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1) Name the x-intercept of the graph for the equation 4x +2y = 8

Ksju [112]

Answer:

The x-intercept is at (2,0).

Step-by-step explanation:

The x-intercept(s) can be found by setting y to 0 and solving for x.

Your equation is:

4x+2y=8.

To find x-intercept replace y with 0:

4x+2(0)=8

4x =8

Divide both sides by 4:

x =2

The x-intercept is at (2,0).

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3 years ago

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How do i solve this step by step??

Levart [38]

Answer:

x = 30

Step-by-step explanation:

well the two agnles are congruent so they have to equal the same angle

x+ 90 = 4x

solve for x bye subtracting x from 90

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3 years ago

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kaheart [24]

Answer: 8. the square roots of perfect squares never be irrational numbers

9. repeating decimals will Always be rational numbers

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Step-by-step explanation:

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3 years ago

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ZanzabumX [31]

Step-by-step explanation:

2/5 is closest to 1/2

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3 years ago

What is the value of the expression when n = 3?

inysia [295]

The value of expression when n = 3 is 22

Solution:

Given expression is:

$\frac{6(n^2 + 2)}{n}$

We have to find the value of expression when n = 3

Substitute n = 3 in given expression

$\rightarrow \frac{6(3^2 + 2)}{3}\\\\Simplify\ the\ above\ expression\\\\\rightarrow \frac{6(9+2)}{3}\\\\Solve\ the\ terms\ inside\ the\ bracket\\\\\rightarrow \frac{6(11)}{3}\\\\Divide\ 6\ by\ 3 \\\\\rightarrow 2 \times 11 = 22$

Thus the value of expression when n = 3 is 22

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3 years ago