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zubka84 [21]
3 years ago
12

|a-7| - |a-9| if a<7

Mathematics
1 answer:
CaHeK987 [17]3 years ago
4 0

Step-by-step explanation:

-  |a - 7|  - ( -  |a - 9| ) =  - a  + 7 + a - 9 =  - 2

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2 years ago
Read 2 more answers
*brainliest for best answer thank you* Solve for b.
vekshin1

Hello from MrBillDoesMath!

Answer:

The fourth choice,  b = +\- sqrt( sg + a^2)

Discussion:

s = (b^2 - a^2)/g     =>              multiply both sides by "g"

sg = b^2 - a^2        =>               add a^2 to both sides

sg + a^2 = b^2       =>                take the square root of each side

b = +\- sqrt( sg + a^2)


which is the fourth choice.


Thank you,

MrB

7 0
3 years ago
Can someone please help me on this
Studentka2010 [4]

Answer:

x = 6.5cm

Step-by-step explanation

Assuming that you know the abbreviation SOH CAH TOA, you can solve this easily

What we need to find is x, which is the adjacent (A) side. The other value given is the hypotenuse (H), 13cm. We will see that given A and H, we can use cosine .

cos(60) = x / 13         (remember: cos(angle) = A / H)

Multiply 13 to the other side to get x by itself,

13cos(60) = x

x = 13cos(60)

  = 6.5

Hope this helps!

3 0
3 years ago
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