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Harman [31]
3 years ago
13

I have 21 apples my mom takes 4 of them away.How meany do I have.

Mathematics
2 answers:
pickupchik [31]3 years ago
8 0
21-4 is 17. you now have 17 apples
xz_007 [3.2K]3 years ago
8 0

Answer:

21 because ur not supposed to share

Step-by-step explanation:

21-4= 17

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Lim x tanx/ 1-cosx<br> x―&gt;0<br><br> please help... ...?
lakkis [162]
Note that 1 - cos(x) = 2sin²(x/2) 

⇒ lim x→0 xtan(x)/ [1 - cos(x)] = 

= lim x→0 xtan(x) / 2sin²(x/2) = 

= lim x→0 1/2 xtan(x) / [sin²(x/2) / (x/2)² * (x/2)²] 


Also, we know that lim x→0 sin(x)/x = lim x→0 tan(x)/x = 1 

So the limit is : 

= 1/2 lim x→0 xtan(x) / (x²/4) = 

= 1/2 lim x→0 4/x² * xtan(x) = 

= 2 lim x→0 tan(x)/x = 

<span>= 2.


I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!
</span>
8 0
4 years ago
√(112) - √(80) / √(20) - √(28) = ?​
Evgesh-ka [11]

\large\underline{\sf{Solution-}}

<u>We need to solve,</u>

\dfrac{\sqrt{112}-\sqrt{80}}{\sqrt{20}-\sqrt{28}}

We can write the above mentioned expression as,

\sf\longmapsto\dfrac{\sqrt{2\times2\times2\times2\times7}-\sqrt{2\times2\times2\times5}}{\sqrt{2\times2\times5}-\sqrt{2\times2\times7}}

So,

\sf\longmapsto\dfrac{\sqrt{4\times4\times7}-\sqrt{4\times4\times5}}{\sqrt{2^2\times5}-\sqrt{2^2\times7}}

So,

\sf\longmapsto\dfrac{\sqrt{4^2\times7}-\sqrt{4^2\times5}}{\sqrt{2^2\times5}-\sqrt{2^2\times7}}

Hence,

\sf\longmapsto\dfrac{4\sqrt{7}-4\sqrt{5}}{2\sqrt{5}-2\sqrt{7}}

Taking common in respective terms,

\sf\longmapsto\dfrac{4(\sqrt{7}-\sqrt{5})}{2(\sqrt{5}-\sqrt{7})}

On cancelling 4 with 2,

\sf\longmapsto\dfrac{4\!\!\!/^{\:2}(\sqrt{7}-\sqrt{5})}{2\!\!\!/(\sqrt{5}-\sqrt{7})}

\sf\longmapsto\dfrac{2(\sqrt{7}-\sqrt{5})}{(\sqrt{5}-\sqrt{7})}

Taking (-) common,

\sf\longmapsto\dfrac{-2(\sqrt{5}-\sqrt{7})}{(\sqrt{5}-\sqrt{7})}

So, (√5 - √7) gets cut,

<u>Hence, </u>

\longmapsto\bf\dfrac{\sqrt{112}-\sqrt{80}}{\sqrt{20}-\sqrt{28}}=-2

8 0
3 years ago
I’m doing a test and need extreme help.. plz !!
Dafna1 [17]

Answer:

Im taking your points then

5 0
3 years ago
Harold wants to put decorative tape around the side of a cube box with a volume of V.which expression gives the length of the ta
alexandr1967 [171]

Answer:

Length of the tape = Length of the side of the Cube = ³√ V

Step-by-step explanation:

The Volume of a cube box = s³

Where s = length of the side of a cube.

The units of a cube is given as cubic units.

From the question, we were told, a decorative tape was placed at the side of the cube.

Since the volume of a cube is designated as V,

The length of the tape is equivalent to the side of a cube.

Therefore, Since V = s³

Length of the tape = Length of the side of the cube is derived as :

V = s³

Find the cubic root of both side

³√ V = ³√ s³

s = ³√V

Therefore the Length of the tape = Cubic root of the Volume of the cube and it is expressed mathematically as :

s = ³√V

8 0
3 years ago
Read 2 more answers
PLEASE HELP!!
MAVERICK [17]

Answer:

43°

Step-by-step explanation:

Calculating for the measure of angle C using

<h3>sine rule</h3>

\frac{sin18}{9}  =  \frac{sinc}{20} \\ sinc =  \frac{sin18 \times 20}{9}  \\ sinc = 0.6867 \\ c =   \csc(0.6867)   \\ c = 43.3869 \\ c = 43 \: degrees

6 0
2 years ago
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