2 years ago

Solve the equation x2 18x + 21 = -3x to the nearest tenth.

Mathematics

1 answer:

Bumek [7]2 years ago

7 0

Answer:

1x=-29

2x=-1

Step-by-step explanation:

i hope its useful.

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The larger cube measures 20 cm on each edge. What is the surface area?

gavmur [86]

Answer:

2400

Step-by-step explanation:

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3 years ago

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

What is the solution set for 2f ≤ 2?

Firlakuza [10]

Answer:

f ≤ 1

Step-by-step explanation:

I hope this helps, I got a few people to help me and really only remembered the answer so sorry I can't teach you much but I have the answer

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2 years ago

Mr. Addis drove 136 miles on 8 gallons if gas. What is the unit rate?

barxatty [35]

Answer:

17 i think

Step-by-step explanation:

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2 years ago

Read 2 more answers

What is the slope for (4,7) and (-1,4)?

harina [27]

The slope is 7/4

This means that for every 7 that Y changes, X changes by 4. Also, the problem would not go through the origin of a graph.

Hope this helps and have a nice day.

-R3TR0 Z3R0 (復古零) 

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3 years ago