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Ostrovityanka [42]
3 years ago
12

Simplify the following cos(-x)tanx

Mathematics
1 answer:
RSB [31]3 years ago
8 0
\bf \textit{symmetry identites}\\\\
cos(-\theta)=cos(\theta)\\\\
-----------------------------\\\\
cos(-x)tan(x)\implies cos(-x)\cdot \cfrac{sin(x)}{cos(x)}\\\\\\ cos(x)\cdot \cfrac{sin(x)}{cos(x)}\implies sin(x)
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Pls help me solve this volume problem
Ostrovityanka [42]

Answer:

220

Step-by-step explanation:

First, find the area of the bottom prism.

5x10x3 = 150.

Then find the area of the top prism.

The trapezoid's area is 7, multiply this by 10.

Add your quantities together.

You get 220.

8 0
3 years ago
The radius is longer than the diameter.<br><br> A) never true<br><br> B) always true
sweet [91]

Answer:

a) never true

Step-by-step explanation:

a radius is always half of a diameter

6 0
3 years ago
Drag the tiles to the correct boxes to complete the pairs.
Delvig [45]

16/-8=-2

Whenever dividing a -negative number and +positive number= number will be always -

3  3/7 / 1  1/7= 24/7 *7/8= 3 ( Cross out 7 and 7, divide by 1). Cross out 8 and 24 and divide by 8) ( Also always flip over the second fraction only when dividing)

3 3/7= 24/7 because multiply the denominator and whole number. 3*7=21

Add 21 with the numerator (3)= 21+3=24

-12.2 / (-6.1)=2

Whenever dividing two - negative numbers= + positive number

-2 2/5 / 4/5= -12/5*5/4=-3 Cross out 5 and 5- divide by 5. Cross out 4 and -12, divide by 4

Answers:

- 2 = 16/-8=-2

3= 3  3/7 /( dividing )1 1/7= 3

2= -12.2 / (-6.1)=2

-3=-2 2/5 / ( dividing) 4/5=-3

6 0
4 years ago
Read 2 more answers
A new Honda Civic costs $ 22 , 000 the year it is made. This car depreciates, losing value at a rate of 5 % each year on average
Delvig [45]

Answer: 3300

Step-by-step explanation: Three years is 15%, 15% of 22,000 is 3,300

I think this is the answer, tell me if it works

4 0
3 years ago
The equation for the circle is:
ivann1987 [24]
Use completion of sq method
x^2+y^2+14x+10y-7=0
(x+7)^2+(y+5)^2=7+49+25
(x+7)^2+(y+5)^2=81
so centre is(-7,-5) radius is9
4 0
3 years ago
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