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3 years ago

Find the exact value tan^-1(tan(3pi))

Mathematics

1 answer:

bearhunter [10]3 years ago

6 0

The answer is 0
(According to the radical stuffs)

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What is algebra I would really like it if you could help

Sergio039 [100]

Answer:

It is the branch of math that is in charge of dealing with letters known as variables.

Step-by-step explanation:

These variables are used to fill in the place of missing numbers in an equation or solution.Algebra is widely used all over the world in schools.

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3 years ago

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If f(x) = 3x-2, find f(8) - f(5)

neonofarm [45]

Answer:

Step-by-step explanation:

f(8)=3(8)-2=22

f(5)=3(5)-2=13

22-13=9

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3 years ago

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How do you solve it A(x+b)-c=d

Vsevolod [243]

Move all the terms to the left side and set equal to zero. Then set each factor equal to zero.

A= c+d/b+d

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4 years ago

The present ages of hero and hero in the ratio 3 is to 4 5 years from now their ratio of their ages will be 4 is 25 find the pre

Kisachek [45]

Answer:

Presently; Veeru is 15 and Neeru is 20

Step-by-step explanation:

Given

See comment for proper format of question

Let their present ages be x and y

So:

$x : y = 3 : 4$

5 years time, the ratio will be:

$x + 5: y + 5= 4 : 5$

Required

Their present ages

Express both ratios as fractions

$x : y = 3 : 4$ becomes

$\frac{x}{y} = \frac{3}{4}$

and

$x + 5: y + 5= 4 : 5$ becomes

$\frac{x+5}{y+5} = \frac{4}{5}$

Make x the subject in: $\frac{x}{y} = \frac{3}{4}$

$x = \frac{3}{4}y$

$x = 0.75y$

Cross multiply in $\frac{x+5}{y+5} = \frac{4}{5}$

$5(x + 5) = 4(y + 5)$

Substitute $x = 0.75y$

$5(0.75y + 5) = 4(y + 5)$

Open brackets

$3.75y + 25 = 4y + 20$

Collect like terms

$3.75y -4y = -25 + 20$

$-0.25y = -5$

Divide by -0.25

$y = 20$

Substitute $y = 20$ in $x = 0.75y$

$x = 0.75 * 20$

$x = 15$

8 0

3 years ago

Solve the following equation: 4(8x + 2) = 72

Iteru [2.4K]

The x is 2 :) I hope it’s right! I’m pretty sure it is though !

6 0

3 years ago