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3 years ago

Who could help me solve this

Mathematics

2 answers:

Monica [59]3 years ago

6 0

6561 hope this helps

Elis [28]3 years ago

6 0

You would turn the -9 into a 9 and multiple 9x9x9x9 so 81 x81 is 6,561 hope it helps

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All angles in the figure at the right are right angles what is the agree of the figure

wel

Answer:

Ans: 36

Step-by-step explanation:

just separate it into three rectangles and use the formula

A=l*b

and at last add all of them

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3 years ago

Answer question 4 please?

n200080 [17]

Answer:

x=4

the two short lines bisected line AB and AC indicate that they have the same length. If they are the same then

3x-5=7

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3x=12 divide both side by 3 then u get

x=4

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3 years ago

2 sin x cos x = tan x

eimsori [14]

Answer:

If $sin x = 0$ we get $2 (0) (\pm1) = 0$ which is true. so we have a first set of solutions given by

$x= 0; x = \pi$ ;

Else, if $sin x \ne 0$ we can divide both sides by it and we get

$2 cos x = \frac 1 {cos x} \rightarrow 2cos^2x =1 \rightarrow cos^2x =\frac12\\cos x= \pm \frac{\sqrt2}2$

Which gives us a second set of solutions given by $x= \frac{\pi}4;x= \frac{3\pi}4; x= \frac{5\pi}4;x= \frac{7\pi}4$ ;

We can group all solutions (doesn't matter, but it's more elegant!) by writing

$x= k\frac{\pi}4; k\in \{0,1,3,4,5,7\}$

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2 years ago

How can I simplify this and show work?

svp [43]

$\frac{ \sqrt{3}}{ \sqrt{5} - \sqrt{6} } \\ = \frac{ \sqrt{3}( \sqrt{5} + \sqrt{6}) }{( \sqrt{5} - \sqrt{6})( \sqrt{5} + \sqrt{6})} \\ = \frac{ \sqrt{15}+3 \sqrt{2} }{5-6} \\ =- \sqrt{15}-3 \sqrt{2}$
Please vote me the Brainliest one. Thank you <3

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3 years ago

Mathematics<br><br>What is (4-x)(4-x)

Ksju [112]

Step-by-step explanation:

(4-x)(4-x)=16-4x-4x+x= 16-7x

.........

3 0

3 years ago