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Kisachek [45]
3 years ago
10

How does solve a system ​

Mathematics
1 answer:
Nady [450]3 years ago
7 0
What’s the question ?
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Evaluate the expression when b=4/5 and c=-3/8<br><br> 2c-b
timurjin [86]

Answer:

-1/20

Step-by-step explanation:

2(3/8) - 4/5

6/8 - 4/5

30/40 - 32/40

-2/40

-1/20

6 0
3 years ago
(I will mark brainlest, please help me. I'm just really confused.) (25 POINTS)
Ann [662]

Answer:

The rocket ship reaches of height of 600 feet at t=8.415

Step-by-step explanation:

First, plug in the values you know. f(t) is equal to 600, the amount of feet at time t. The vertical velocity and initial heights should also be plugged in. You should end up with an equation that looks like:

600 = -16t^2 + 200t +50.

Simply use the quadratic formula to solve for t. You'll get two answers, one negative and one positive. Choose the positive one, as the negative answer is impossible to answer a real life time problem.

The answer is 8.415.

7 0
4 years ago
Read 2 more answers
In a function, y varies inversely with x. The constant of variation is 4. Which table could represent the function?
Nimfa-mama [501]
The equation will be y=4/x. u can make the table of variables by inserting the values of x in the equation. for suppose here, if x=1 then y=4 , x=2 then y=2 and so on.
5 0
3 years ago
Read 2 more answers
Recall the equation for a circle with center (h,k) and radius r. At what point in the first quadrant does the line with equation
IgorC [24]

Answer:

At intersection

x=2.68

y=5.34

Step-by-step explanation:

Equation of circle with center (h,k) and radius r is

(x-h)^{2}+(y-k)^{2}=r^2\\\\With\,\, center\,\,(0,4)\,\, and\,\, r=3\\\\(x-0)^{2}+(y-4)^{2}=3^2\\\\x^2+(y-4)^{2}=9---(1)\\\\Equation\,\,of intersecting\,\,line\\y=0.5x+4---(2)

To find point of intersection:

From (2)

x=\frac{y-4}{0.5}=2(y-4)\\\\x^2=4(y-4)^{2}\\\\Put\,\,in\,\,(1)\\\\4(y-4)^{2}+(y-4)^{2}=9\\\\5(y-4)^{2}=9\\\\y-4=\frac{3}{\sqrt{5}}\\\\y=1.34+4\\\\y=5.34\\\\x=2(5.34-4)\\\\x=2(0.34)\\\\x=2.68

At intersection

x=2.68

y=5.34

This point of intersection can be checked in graph attached below

3 0
3 years ago
 One of these 80 students is chosen at random. what is the probability that the student went to the signs museum? (Is this co
pav-90 [236]

Answer:

PROBABILITY=42/80

=7/20

5 0
3 years ago
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