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Dahasolnce [82]
3 years ago
15

How to do I solve this

Mathematics
1 answer:
padilas [110]3 years ago
5 0
4. 2b-6+3b=
5b-6=143
5b=143+6
5b=149

b=149
    ------
       5
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If tan x =8/15 and 0°<x<90°,find the value of cos x​
Shtirlitz [24]

9514 1404 393

Answer:

  15/17

Step-by-step explanation:

cos(arctan(8/15)) = 15/17

__

You could assume the ratio values 8 and 15 represent the opposite and adjacent sides of a right triangle. Then the hypotenuse is ...

  h = √(8² +15²) = √289 = 17

The cosine is the ratio of the adjacent side to the hypotenuse, so is ...

  cos(x) = 15/17

6 0
3 years ago
Ali receives a 10% pay
DiKsa [7]

Answer:

95.04 pounds

122.54 US dollars

Step-by-step explanation:

I had to do the math in US dollars first then turn it into pounds.

All you do is this

136.16 * -.10 (US dollars)

13.616(US) 10.56(pounds)

Subtract 13.616 from 136.16 to get

122.544 or 122.54 (US)

95.04(pounds)

It might be a bit confusing, but the answers are up top.

8 0
3 years ago
what is the equation of the line that passes through (-9,12) and is perpendicular to the line whose equation is y=1/3x+6
BabaBlast [244]
Y=kx+b
line is perpendicular y=1/3x+6⇒ k=-\frac{1}{ \frac{1}{3} }=-3

 so line y=-3x+a
 this line that passes through (-9,12)⇔x=-9, y=12, so 12=-3(-9)+a
12=27+a
a=12-27
a=-15
y=-3x-15

P.s.picture<span> to test solutions <span>in the application</span></span>


8 0
3 years ago
Read 2 more answers
What is the answer nto this qustion
nirvana33 [79]
A or B. its a 50/50 here. I can't really tell whats on the graph.
5 0
3 years ago
Read 2 more answers
Which expressions are differences of squares?
Lina20 [59]
Difference of 2 perfec squares is
(a^2)-(b^2)




if the exponents are both even and the coeficient (the number in front) are perfect squares, then it is difference t 2 perfect squares

first one
8 is not perfect square


2nd one
(4e^4)^2-(9g^2)^2


third
25 is odd, so it cannot be split up into 2 nice numbers

4th
(11m^9)^2-(3n^5)^2
8 0
3 years ago
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