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loris [4]
3 years ago
11

Solve x+y= -1 x - y = -7 using elimination.

Mathematics
1 answer:
Andreas93 [3]3 years ago
6 0

Answer:

(-4, 3)

x = -4, y = 3

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F(1)=15<br> f(n)=f(n-1)·n<br> f(2)=?
nika2105 [10]

Answer:

is f(2)=13 this is the answer because You have to división ir multiplicar ir

6 0
2 years ago
Find dy/dx. if y = 8u - 6 and u = 3x - 8.
Dmitriy789 [7]

Use the chain rule:

\dfrac{\mathrm dy}{\mathrm dx}=\dfrac{\mathrm dy}{\mathrm du}\dfrac{\mathrm du}{\mathrm dx}

We have

y=8u-6\implies\dfrac{\mathrm dy}{\mathrm du}=8

u=3x-8\implies\dfrac{\mathrm du}{\mathrm dx}=3

so we get

\dfrac{\mathrm dy}{\mathrm dx}=8\cdot3=\boxed{24}

Alternatively, you can substitute <em>u</em> in the definition of <em>y</em> and differentiate with respect to <em>x</em> :

y=8u-6=8(3x-8)=24x-64\implies\dfrac{\mathrm dy}{\mathrm dx}=24

7 0
3 years ago
BRAINLIESTTTT ASAP! PLEASE ANSWER
iren [92.7K]
H(t) = −16t^2 + 75t + 25
g(t) = 5 + 5.2t

A)
At 2, h(t) = 111, g(t) = 15.4
At 3, h(t) = 106, g(t) = 20.6
At 4, h(t) = 69, g(t) = 25.8
At 5, h(t) = 0, g(t) = 31
The heights of both functions would have been the closest value to each other after 4 seconds, but before 5 seconds. This is when g(x) is near 30 (26-31), and the only interval that h(t) could be near 30 is between 4 and 5 seconds (as it is decreasing from 69-0).

B) The solution to the two functions is between 4 and 5 seconds, as that is when their height is the same for both g(t) and h(t). Actually the height is at 4.63 seconds, their heights are both
What this actually means is that this time and height is when the balls could collide; or they would have hit each other, given the same 3-dimensional (z-axis) coordinate in reality.

6 0
3 years ago
Read 2 more answers
Slope 0; through (-5, -1)<br> with steps please.
posledela

Step-by-step explanation:

0 slope means it has in x.

so the equation is y=-1, because that is the coord for the points'y axsis

3 0
3 years ago
X/7 = -3<br> 1. x = -21<br> 2. x = -10<br> 3. x = 4<br> 4. x = 21
SOVA2 [1]
X/7= -3
X= -21

Hope this helps!
5 0
3 years ago
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