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Harrizon [31]
3 years ago
14

QUICK can anyone help me. Big points for right answers.

Mathematics
1 answer:
klemol [59]3 years ago
7 0
No13.
Answer:
Cos(x+x)=cosx*cosx-sinx*sinx
=cos2(x)-sin2(x)
=(cosx+sinx)(cosx-sinx)
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Danielle estimates that she will spend $250 on new summer clothes. She actually spent $350. What is the percent error? Round to
lesya [120]

Answer:

%28.57 (14285714286)

Step-by-step explanation:

Divid To get decimal (percent right)

250/350= 0.714285714285714

Subtract from 1 to get decimal (Percent wrong)

1.0 - 0.714285714285714= 0.285714285714286

Move over decimal to placements to the right to convert to percent

%28.5714285714286

Round

%28.57

8 0
3 years ago
Two complementary angles have a difference of 22 degrees. What are the two angles?
ArbitrLikvidat [17]

Answer:

If two angles sum is equal to 90° and makes right angle called = complementary angle...☺️✌️

Above sum solution....

one angle =x

other angle =y

According to question

x+y= 90°......(1)

x-y=22°......(2)

from one and two ....by eliminating method...

2y=68

y=68/2

y=34

put y in equation 1

x+y=90°

x+34=90°

x=90°-34

x= 56...

To verify add both

sum = 90°

Hence ..verified...

Step-by-step explanation:

hope its helps u...☺️✌️✌️

5 0
3 years ago
Read 2 more answers
You own a portfolio that is invested 43 percent in stock a, 16 percent in stock b, and the remainder in stock
docker41 [41]

Multiply the investment fraction by the corresponding return, and add the products. The given fractions add to 59%, so the remainder is 41%. (The total of the fractions is 100%—all of the portfolio.)

... 0.43*9.1% + 0.16*16.7% + 0.41*11.4%

... = 3.913% + 2.672% + 4.674% = 11.259%

6 0
3 years ago
Help lol pleaseeeee<br> I don’t know what to do
Tanya [424]
I think the answer is 4

If my memory serves me right then you have to do Q3-Q1

This is 6-2

The answer would be 4


Hope this is right and it helps :)
5 0
3 years ago
Read 2 more answers
blair cuts a ribbon into 2 equal pieces. then she cut 4 inches off one piece. that piece is now 5 inches long. what was the leng
Ksju [112]
The original ribbon was 18 inches long.
hope it helps
4 0
3 years ago
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