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Bingel [31]
3 years ago
6

Which system of equations has a solution of approximately (–0.4, 1.1)?

Mathematics
1 answer:
BabaBlast [244]3 years ago
6 0

Answer:

                    d                                                                                                            

Step-by-step explanation:                                                                              

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20 POINTS!! What would be the first step to solve this equation?
rjkz [21]

Answer:

its b

Step-by-step explanation:

because you always have to divide by the number on top

7 0
2 years ago
Solve - 2( x+ 4) = 12
Zolol [24]

Step-by-step explanation:

2(x+4) = 12

or, 2x + 8 = 12

or, 2x = 12-8

or, 2x = 4

or, x = 4÷2

hence, x = 2

4 0
1 year ago
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Im confused..I feel as if what I’m learning in class itself is not as difficult as the problems my teacher gives us to take home
RideAnS [48]
Ok, so remember that the derivitive of the position function is the velocty function and the derivitive of the velocity function is the accceleration function

x(t) is the positon function
so just take the derivitive of 3t/π +cos(t) twice
first derivitive is 3/π-sin(t)
2nd derivitive is -cos(t)
a(t)=-cos(t)

on the interval [π/2,5π/2) where does -cos(t)=1? or where does cos(t)=-1?
at t=π
so now plug that in for t in the position function to find the position at time t=π
x(π)=3(π)/π+cos(π)
x(π)=3-1
x(π)=2
so the position is 2







ok, that graph is the first derivitive of f(x)
the function f(x) is increaseing when the slope is positive
it is concave up when the 2nd derivitive of f(x) is positive

we are given f'(x), the derivitive of f(x)
we want to find where it is increasing AND where it is concave down

it is increasing when the derivitive is positive, so just find where the graph is positive (that's about from -2 to 4)

it is concave down when the second derivitive (aka derivitive of the first derivitive aka slope of the first derivitive) is negative
where is the slope negative?
from about x=0 to x=2
and that's in our range of being increasing
so the interval is (0,2)
4 0
3 years ago
AB is a tangent. Find the length of the radius, r.
Lena [83]

Answer: 8

Step-by-step explanation:

Since AB is a tangent, angle CAB is a right angle. Thus, by the Pythagorean theorem, r=\sqrt{17^{2}-15^{2}}=8

4 0
1 year ago
Johnny saw that the temperature on the outside thermometer was 59°F.
dedylja [7]
A tshirt and jeans, or shorts
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3 years ago
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