MATHEMATICS HIGH SCHOOL

What’s the cosine of U?
What’s the cosine of U? - 1

Answers

Answer 1
Answer:

Step-by-step explanation:

The cosine of U is equal to the adjacent side divided by the hypotenuse.

cos(U) = 28/53

You can simplify it from there.

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Anybody know the answer ? Please help :(

Which image (A'B'C'D') of ABCD cannot be produced using only reflection?

Answers

The image (A'B'C'D') of ABCD , in Option C cannot be produced using only reflection.

What is an Image of a Figure ?

Image is the copy of a figure made along the axis.

The figure attached as two figures , object and  image ,the image  has some transformation done to it

Figure 1 , option 1 :

In the figure

Object Coordinates :

ABCD : ( -6 ,4) , (-6,6) , (-2,6) , (-4,4)

A'B'C'D' : ( 6,-4) , (6,-6) , (2,-6) , (4,-4)

Figure 2 :

Object Coordinates :

ABCD : ( -6 ,4) , (-6,6) , (-2,6) , (-4,4)

A'B'C'D' : ( 4 , -6) , (6,-6) , (6,-2 ) , (4,-4)

Figure 3

Object Coordinates :

ABCD : ( -6 ,4) , (-6,6) , (-2,6) , (-4,4)

A'B'C'D' : ( 6 , -6) , (6,-4) , (2,-4 ) , (4,-6)

Figure 4

Object Coordinates :

ABCD : ( -6 ,4) , (-6,6) , (-2,6) , (-4,4)

A'B'C'D' : (4 , 6) , (6,6) , (2,6 ) , (4,4)

As all the image formed is just by reflection except of Option C , Figure 3.

Therefore Option C is the answer.

To know more about Image

brainly.com/question/25029470

#SPJ1

Find the missing side b.
A. 16.1
B. 19.7
C. 26
D. 13

Answers

Answer: A . 16.1

Step-by-step explanation:

In the figure we have a right triangle in which one of the leg's length is missing.

  • Pythagoras theorem of right triangles says that the square of hypotenuse is the sum of the squares of the two legs.

For the given triangle , we have(18)^2=b^2+8^2

i.e. \Rightarrow\ 324=b^2+64

i.e. \Rightarrow\ b^2=324-64

i.e. \Rightarrow\ b^2=260

i.e. \Rightarrow\ b=√(260)=16.1245154966approx16.1

Hence, the missing side = 16.1 units
16.1. Solve by using the Pythagorean Theorm. b squared+8 squared= 18 squared. b squared+64=324. Subtract 64 from both sides to get b squared=260. Square root 260 to get 16.1

Add the following complex numbers:(5 - 3i) + (10 + 5i)

A. 15 + 2i
B. -5 + 8i
C. -5 + 2i
D. 15 + 8i​

Answers

Answer:

A

Step-by-step explanation:

Remember to combine like terms, aka whichever number has the same variable (or no variable), those are the ones that go together. 5 + 10 is 15. -3i + 5i is the same as 5i -3i, which is 2i.

Answer:

A. 15 + 2i

Step-by-step explanation:

(5 - 3i) + (10 + 5i)

5 - 3i + 10 + 5i

5 + 10 - 3i + 5i

15 + 2i

hope it helps!

Factorise: 3a^2 + 7a

Answers

Hey there, 3a²+7a=A(3a+7), you put 3a+7 in parenthesis, and leave the other a outside of the parenthesis

Kenya exchanges $150 for British pounds(£). Suppose the conversion rate is £1 = $1.60. How many pounds should she receive?

Answers

She will receive £93.75

- Kenya exchanges $150 for British pounds(£)

This mean Kenya have a cash of $150 and needs to convert it to the British pounds (£).

- Suppose the conversion rate is £1 = $1.60

This means that at the moment that Kenya want to convert $150 to the British pounds (£), the conversion rate of £1 = $1.60, equivalent to $1 = £0.625

- How many pounds should she receive?

Since £1 = $1.60, $1 = £0.625

Her $150 is equivalent to £93.75 (£0.625*150)

Therefore, she will receive £93.75

See related question herebrainly.com/question/3541173brainly.com/question/4208444
If $1.60 is 1 pound, divide the $ amount by 1.60 to find the number of pounds. 150/1.6 = 93.75

Evaluate 2|3y-8|+y if y =2.5

Answers

2|3y-8|+y if y =2.5
2|3（2.5）-8|+2.5 
2|7.5-8|+2.5 
2(0.5)+2.5 
1+2.5
=3.5
Subtitute value of y to the expression:

2 · |3 · 2.5 - 8| + 2.5 = 2 · |7.5- 8| + 2.5 = 2 · |-0.5| + 2.5

= 2 · 0.5 + 2.5 = 1 + 2.5 = 3.5
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