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Alex_Xolod [135]
3 years ago
5

Can someone help me with this. we’re doing solving system by substitution

Mathematics
1 answer:
garik1379 [7]3 years ago
7 0

Answer:

x=5  y=13

Step-by-step explanation:

-2(3x-2)+3x=-11

-3x+4=-11

solve for x: -3x+4=-11

                     -3x=-15

                       x=5

y=3x-2 sub in the 5

y=3(5)-2

y=13

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Anyone good with calculus? Please help.
podryga [215]

First take a time derivative of a function describing motion,

\frac{d}{dt}h(t)=\frac{d}{dt}-4.9t^2+19.6t-14.6=-9.8t+19.6.

Finding the maxima of the function is obtained by determining where the critical points are. You can find the critical points by equating the derivative with 0 and solving for t,

\frac{d}{dt}h(t)=0

-9.8t+19.6=0\implies t=\frac{19.6}{9.8}=\boxed{2}.

So at 2 seconds the ball peaks in height.

To find out the height feed 2 to the function h.

h(2)=-4.9\cdot2^2+19.6\cdot2-14.6=\boxed{5}.

So at 2 seconds the ball reaches maximum height of 5 meters.

Hope this helps :)

4 0
3 years ago
The equation of a circle is x^2+(y+4)^2=1<br> What are it’s center and it’s radius?
AnnZ [28]

Answer:

see attachment

Step-by-step explanation:

8 0
3 years ago
cuanto dinero se debe invertir a un interes de 14% compuesto continuamente para tener $500,000 en 35 años?
Alja [10]

Answer:

Se necesita depositar un capital inicial de $ 5096.83 pesos para lograr $ 500000 pesos a un interés compuesto de 14 % anual luego de 35 años.

Step-by-step explanation:

La cantidad ahorrada bajo interés compuesto está definida por la siguiente fórmula:

C(t) = C_{o}\cdot (1+r)^{t} (1)

Donde:

C_{o} - Capital inicial, medido en pesos.

C(t) - Capital actual, medido en pesos.

r - Tasa de interés, sin unidad.

t - Anualidad, medida en años.

Asumiendo que la tasa de interés compuesto es anual y si C(t) = 500000, r = 0.14 y t = 35, entonces el capital inicial es:

C_{o} = \frac{C(t)}{(1+r)^{t}}

C_{o} = \frac{500000}{(1+0.14)^{35}}

C_{o} = 5096.83

Se necesita depositar un capital inicial de $ 5096.83 pesos para lograr $ 500000 pesos a un interés compuesto de 14 % anual luego de 35 años.

6 0
3 years ago
Geometry First Semester.<br>Can someone please help with this?
Len [333]
1-a
2-d
3-a
4-b
5-d
6-b
7-a
8-c
9- i don't know the answer, just guess.... 
10 - d

7 0
3 years ago
2.
Pachacha [2.7K]
Answer: 80 pieces of fruit

Explanation:
Let’s find out the amount of trees Mr Champion has.
He has 14 in total. 1 apple tree and 1 plum tree, and the rest are divided evenly among apricot, pear and peach trees. This means:
1 apple tree + 1 plum tree = 2 trees
14 - 2 = 12 trees
12 / 3 (varieties of trees) = 4
In conclusion, he has
1 apple tree, 1 plum tree, 4 apricot, pear and peach trees.

Now let’s go to the section where he picks the fruit.
6 apricots from 4 trees
10 peaches from 4 trees
3 pears from 4 trees
4 apples from 1 tree

This means:
(6 x 4) + (10 x 4) + (3 x 4) + (4 x 1) = total pieces of fruit picked

24 + 40 + 12 + 4 = total pieces of fruit picked

Now, you add up those four numbers, and you have your answer, 80.



Hope this helps!
5 0
3 years ago
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