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Levart [38]
2 years ago
13

What is the first operation to use to simplify the expression?

Mathematics
1 answer:
fomenos2 years ago
7 0

Answer:

A

Step-by-step explanation:

If you use BIDMAS or BODMAS the first rule is brackets and inside the brackets you add and is therefore the first operation to use.

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Given the right triangle shown below.if Cos A =15/17 and tan A=8/15 which of the following represents the length of BC
otez555 [7]

Answer:

The Figure for Right triangle is below,

Therefore , 15 unit length represents BC.

Step-by-step explanation:

Given:

Consider a right triangle ABC, Such that

\cos A=\dfrac{15}{17}\\\\\tan A=\dfrac{8}{15}

To Find:

BC = ?

Solution:

In Right Angle Triangle ABC, Cosine and Tangent identity

\cos A = \dfrac{\textrm{side adjacent to angle C}}{Hypotenuse}\\

\tan A= \dfrac{\textrm{side opposite to angle A}}{\textrm{side adjacent to angle A}}

BUT,

\cos A=\dfrac{15}{17}\\\\\tan A=\dfrac{8}{15} ....Given

On Comparing,

Adjacent side to angle A = AB = 15

Opposite side to angle A = BC = 8

Hypotenuse = AC =17

Also Pythagoras theorem is Satisfies,

(\textrm{Hypotenuse})^{2} = (\textrm{Shorter leg})^{2}+(\textrm{Longer leg})^{2}

(\textrm{Hypotenuse})^{2} = 17^{2}=289

(\textrm{Shorter leg})^{2}+(\textrm{Longer leg})^{2}=15^{2}+8^{2}=289

The Figure for Right triangle is below,

Therefore , 15 unit length represents BC.

7 0
3 years ago
I don’t know how to do this help :(
katen-ka-za [31]
A of trapezium = ((a+b)/2)(h)
A = ((10+10+4)/2)(8)
A = (24/2)(8)
A = 12(8)
A = 94
The area is 94ft²
5 0
3 years ago
Hey can you please me asap!
crimeas [40]

Answer:

It's D

Step-by-step explanation:


6 0
3 years ago
Read 2 more answers
Is this Statement true or false?
nikitadnepr [17]

Answer:

True

Step-by-step explanation:

Yes, this is True because dotted lines are not part of the solution on a graph.

Sorry! Can't be explained more than this!

3 0
3 years ago
Read 2 more answers
Let f(x) = x2 - x + 7 and g(x)= - 3x + 6. Find g(9) and f(g(9)).<br> 9(9)=(Simplify your answer.)
aleksklad [387]

Step-by-step explanation:

see the picture

maybe i am right or wrong i have juat tried

6 0
3 years ago
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