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S_A_V [24]
4 years ago
13

HURRY!!!!

Mathematics
1 answer:
m_a_m_a [10]4 years ago
7 0
The value of the card was $13 when he originally purchased it.
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Given that a=3x+2y /3x+2y<br> Find a if y=4 and x=6.
Fofino [41]

Answer:

Simplify 3⋅6+2⋅4/3⋅6+2⋅6.

Step-by-step explanation:

Exact Form:

a=274/9

Decimal Form:

a=30.¯4

Mixed Number Form:

a=30 4/9

is it right???

6 0
3 years ago
Write an equation of the line below.<br> HELP PLEASE!!
timurjin [86]
Two points: (-5,7), (0,2)
Find slope: (2-7)/(0+5) = -5/5 = -1
Y intercept is given: 2
Y = -1x + 2
7 0
3 years ago
PLEASE HELP ME PLEASE!!
Harman [31]
  1. Answer:

hypotenuse (h)=?

perpendicular (p)=3

base(b)=2

using pythagoras theorem

h²=p²+b²

h²=3²+2²

h²=9+4

h²=13

h=√13

  • hypotenuse (h)=12
  • perpendicular (p)=10
  • base(b)=?

using pythagoras theorem

b²=h²-p²

b²=12²-10²

b²=144-100

b=√44

b=2√11

6 0
3 years ago
What is the standard deviation of the following set of data? 8, 12, 14, 8, 9, 5, 17, 19, 31, 8​
Y_Kistochka [10]

5,8,9,12,14,17,19,31

in order

6 0
3 years ago
Read 2 more answers
Find the exact value of the trigonometric expression given that sin(u) = -(3/5),
GuDViN [60]

Recall that

\cot(u+v)=\dfrac{\cos(u+v)}{\sin(u+v)}=\dfrac{\cos u\cos v-\sin u\sin v}{\sin u\cos v+\cos u\sin v}=\dfrac{\cot u\cot v-1}{\cot v+\cot u}

Also, recall that for all \theta,

\cos^2\theta+\sin^2\theta=1

With \frac{3\pi}2, we can expect \cos u>0, and with 0, \sin v>0. So from the above identity it follows that

\cos u=\sqrt{1-\sin^2u}=\dfrac45\implies\cot u=\dfrac{\cos u}{\sin u}=-\dfrac43

and

\sin v=\sqrt{1-\cos^2v}=\dfrac8{17}\implies\cot v=\dfrac{\cos v}{\sin v}=\dfrac{15}8

and so

\cot(u+v)=\dfrac{-\frac43\frac{15}8-1}{\frac{15}8-\frac43}=\boxed{-\dfrac{84}{13}}

6 0
3 years ago
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