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arsen [322]
3 years ago
14

Help on these two pleaseeeeeeeeeee

Mathematics
1 answer:
nlexa [21]3 years ago
4 0
4. 2k-13
Hope this helps!
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Prove: 1-tan^2 x/ 1+tan^2 x= 1-sin^2 x
Bas_tet [7]
Check solution here.hope it will be of help.

3 0
3 years ago
1 Find the shaded area for each of the following shapes.
andrew-mc [135]

Answer:

the answer is 40

7 0
4 years ago
If xy=0, what must be true about either x or y
evablogger [386]

Answer:

either x or y must equal 0​

Step-by-step explanation:

ts given that xy = 0

Remember that product of two numbers can be zero only if:

Both of them are zero or Either of them is zero as zero multiplied to any non-zero number will always be equal to zero. This is known as Zero Product Property.

So, if the product of x and y is equal to 0 there are two possibilities:

Both x and y are equal to 0

Either x or y must be equal to 0

Note that the condition both x and y are equal to zero is not a must condition, because even if one of them is equal to zero, the entire expression will be equal to zero.

Hence, the condition which has to be true in all cases for xy = 0 is:

either x or y must equal 0​

4 0
3 years ago
Read 2 more answers
Please help with the 4th one
Yakvenalex [24]
The whole field is square, and its total area is 25 acres. 
It's divided up into 25 little sections. 
Each little section is a square, and its area is 1 acre. 

So the whole thing looks like a square tray with 25 little square blocks in it.
The blocks are in 5 rows, and there are 5 blocks in each row.

There are 16 blocks around the edge of the square tray, and 9 in the middle
that don't touch the edge.

Every block costs $1,200 to start out.  But the ones around the edge are
more expensive.  Anything on the edge costs an extra $150 for each side
of the little block that touches the edge.

Most of the 16 little blocks around the outside have only 1 side that touches
the edge.  But the ones in the <em>corners</em> of the tray have 2 sides along the edge.

You may want to have a look at the picture I attached.

That should be plenty to put you in a position to work out the costs.

7 0
3 years ago
Jessica has $50 to spend on new clothes. The
tensa zangetsu [6.8K]

Answer: No

Step-by-step explanation: she has $50

To find % you would multiply the original number by the percentage.

It would be 50*0.06 (percentages are simplified by dividing it by 100)

50*0.06=3

48.20+3=51.20

So the answer would be No Jessica does not have enough to buy the jacket.  

5 0
3 years ago
Read 2 more answers
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