MATHEMATICS HIGH SCHOOL

Given that cos 63°≈ 0.454, enter the sine of a complementary angle.
sin

Answers

Answer 1
Answer:

Answer:

\cos(63^\circ) is the same as \sin(27^\circ) by co-function identities

Step-by-step explanation:

Remember that complementary angles add up to 90°. The angle that i s complementary to 63° is 27°.

Also recall the co-function identities:

  • sin (90° – x) = cos x
  • cos (90° – x) = sin x

This means that \cos(90^\circ-27^\circ)=\sin(27^\circ)\approx0.454.

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2. How many solutions does this system have? 2x + y = 3, 6x = 9 – 3yA) 1B) NoneC) InfiniteD) 2

Can anyone help me find the answer to

2x+9x+4

Answers

so to factor

to factor this in ax^2+bx+c form where a is greater than 1,
b=z+y
ac=xy
solve

so a=2
b=9
c=4

9=y+z
c times a=4 times 2=8
what 2 numbers add up to 9 and mulitply to get 8?
factor 8
8=
1 times8
2 times 4
if we add them up we get
1+8=9 check
2+4=6

the numbers are 1 and 8
split up the middle term
2x^2+1x+8x+4
group
(2x^2+1x)+(8x+4)
factor out/reverse distribute
(x)(2x+1)+(4)(2x+1)
reverse distribute useing distributive proerty
ab+ac=a(b+c)
(x+4)(2x+1)

the factored form is (x+4)(2x+1)

Find the surface area of polyhedra
Pls!! show how you got the surface area ​​

Answers

Answer:

52.48

Step-by-step explanation:

find the cross sectional area which is the triangle

triangle = 1/2 x 8.2 x 6.4 = 26.24

then, use the area to multiply by the extended length of 2

26.24 x 2 = 52.48

What is the length of the line segment that is graphed from (3, 1) to (3, 6)?

Answers

Hello,

The length of the line segment is the distance betheen the 2 points

d²=(3-6)²+(1-6)²=9+25=34 (pythagorean theorem)

d=√34

A number that represents part of a whole or part of the set is called

Answers

A fraction. Hope this is the correct ans. :)

the different of two numbers is 18 twice the smaller number is 56 less than three times the larger what are the numbers

Answers

Hello,
Let a the greater number
b the smaller one

a-b=18
2b=3a-56
==>
a-b=18    |*(-2)
3a-2b=56

==>a=56-2*18
==>a=20 and b=a-18=2

Proof a-b=20-2=18
2=3*20-56

Numbers are 20 and 2.

What is 3727/100 in simplest form?

Answers

3727/100 is already in simplest form. If you divide the numerator (3727) by the denominator (100) you can receive the decimal form of the fraction, so 3720 divided by 100 equals 37.27, OR... 37 with a remainder of 27. 

If you want the fraction in mixed number form, take the 37 with a remainder of 27. 37 will be the whole number and 27 will be the numerator, while the denominator stays 100. So, the mixed form will be 37 27/100.
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