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2 years ago

3х + 5x — 6 = 26 Solve it

Mathematics

2 answers:

pshichka [43]2 years ago

8 0

Answer: x = 4

Step-by-step explanation:

Add the like terms. The new equation should be 8x - 6 = 26
Add 6 on both sides of the equation. The equation simplifies to 8x = 32.
Divide 8 on both sides of the equation. The solution is x = 4.

vlabodo [156]2 years ago

6 0

Answer:

X= 4

Step-by-step explanation:

You add the six to both sides and get 3x+5x=32. Add the 3 with the %x to get 8X. Divide 32 by 8 to get 4.

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Allisa [31]

Answer:

$1998 + 5\sqrt{30}$

Step-by-step explanation:

Set up the equation:

Since C(t) gives the number of cars purchased in the t-th year after 1998, then make the number of cars equal to 15 000 and solve for t - the year:

20t^2 = 15000

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True or false: the equation tan^2x+1=sec^2x

zhenek [66]

ANSWER

True

EXPLANATION

The given trigonometric equation is:

${ \tan}^{2} x + 1 = { \sec}^{2} x$

We take the LHS and simplify to arrive at the RHS.

${ \tan}^{2} x + 1 = \frac{{ \sin}^{2} x}{{ \cos}^{2} x} + 1$

Collect LCM on the right hand side to get;

${ \tan}^{2} x + 1 = \frac{{ \sin}^{2} x + {\cos}^{2} x}{{ \cos}^{2} x}$

This implies that

${ \tan}^{2} x + 1 = \frac{1}{{ \cos}^{2} x} .$

${ \tan}^{2} x + 1 = {( \frac{1}{ \cos(x) }) }^{2}$

${ \tan}^{2} x + 1 = { \sec}^{2} x$

This identity has been verified .Therefore the correct answer is true.

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2 years ago