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ELEN [110]
3 years ago
10

Help me out in this question please

Mathematics
2 answers:
N76 [4]3 years ago
6 0
About one cup I think
barxatty [35]3 years ago
5 0

Answer:

about two cups I think so

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Need the answer asap pls​
sergiy2304 [10]

Answer:

C. {-9,-3}

Step-by-step explanation:

|k+6|=3 gives k+6=3 if k + 6 \geq 0. This gives k=-3, which is valid.

It can also give -(k+6) = 3 if k + 6 < 0. This gives k=-9, which is valid.

Hence the solutions are k=-9 \vee k=-3.

8 0
3 years ago
Prove, cotx -tanx= 2 cot2x
ra1l [238]

Step-by-step explanation:

<em>cotx-</em><em> </em><em>tanx</em><em>=</em><em> </em><em>2cot2x</em>

<em>L.H.S</em>

<em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em>cosx</em><em>/</em><em>sinx-</em><em> </em><em>sinx</em><em>/</em><em>cosx</em><em> </em>

<em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em>(</em><em>cos</em><em>²</em><em>x-</em><em> </em><em>sin</em><em>²</em><em>x</em><em>)</em><em>/</em><em> </em><em>sinxcosx</em>

<em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em>[</em><em> </em><em>cos</em><em>²</em><em>x-</em><em>(</em><em>1</em><em>-cos</em><em>²</em><em>x</em><em>)</em><em>]</em><em>/</em><em>sinxcosx</em>

<em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em>(</em><em> </em><em>2cos</em><em>²</em><em>x-1</em><em>)</em><em>/</em><em>sinxcosx</em>

<em> </em><em> </em><em> </em><em>2cosx</em><em>/</em><em> </em><em>2sinxcosx</em>

<em> </em><em> </em><em> </em><em>2cot2x</em>

4 0
3 years ago
A survey of 240 families showed that.. 91 had a dog 70 had a cat 31 had a dog and a cat 91 had neither a cat nor a dog nor a par
noname [10]
This is a trick question. 7 families had a parakeet.
3 0
3 years ago
Which value is the solution of the equation 5y-4x=-3
Lelechka [254]
I hope this helps you

7 0
3 years ago
Which of the following is an irrational number?
Sladkaya [172]

Answer:

1.333...

Step-by-step explanation:

because irrational numbers can be repeating decimals, numbers that aren't perfect squares,and numbers that can not be in fraction form.

4 0
3 years ago
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