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coldgirl [10]
3 years ago
6

- Write a system of equations in which one equation could be multiplied by-2 and the

Mathematics
1 answer:
iris [78.8K]3 years ago
6 0

2x+5y=9

3x+7y=13

6x+15y=27

-6x-14y=-26

y=1

x=2

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What is the product of 3/5 and its inverse fraction
saul85 [17]

Answer:

The reciprocal of 3/5 is 5/3.

Step-by-step explanation:

not sure though

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4 years ago
Please help with this
valina [46]

Answer:

the answer is A. 99 degrees because 81 + 18 = 99

7 0
3 years ago
Read 2 more answers
Please help! thanks so much​
Stels [109]

Answer:

See below.

Step-by-step explanation:

First, we can see that \lim_{x \to 2}  (f(x))= -1.

Thus, for the question, we can just plug -1 in:

\lim_{x \to 2} (\frac{x}{f(x)+1})=\frac{(2)}{-1+1}  =und.

Saying undefined (or unbounded) will be correct.

However, note that as x approaches 2, the values of y decrease in order to get to -1. In other words, f(x) will always be greater or equal to -1 (you can also see this from the graph). This means that as x approaches 2, f(x) will approach -.99 then -.999 then -.9999 until it reaches -1 and then go back up. What is important is that because of this, we can determine that:

\lim_{x \to 2} (\frac{x}{f(x)+1})=\frac{(2)}{-1+1}  = +\infty

This is because for the denominator, the +1 will always be greater than the f(x). This makes this increase towards positive infinity. Note that limits want the values of the function as it approaches it, not at it.

4 0
3 years ago
A circle has a radius of 15 cm. What is the volume of the sphere made by rotating this circle?
Arlecino [84]
This would be 14137.17. 

V=4/3 x π x r^3 = 4/3 x π x 15^3 ≈ 14137.16694
7 0
3 years ago
F(x)=2x^2+2x-4 find vertex
8090 [49]
A = 2
b = 2
c = -4
"a" is greater than zero so the vertex is a minimum point and the graph is concave up.
The (x,y) point of the vertex is usually designated by the letters (h, k)
The "x" position (or "h") is calculated with this formula:
h = -b / 2a
h = -2 / 4
h = -1 / 2

"k" is calculated with this equation:
k = ah^2 + bh +c
k =(2*-1 / 2 * -1 / 2) + (2 * -1 / 2) + -4
k = (1 / 2) - 1 -4
k = -4.5
so the vertex is at point (-.5, -4.5)

Source:
http://www.1728.org/quadr3.htm


4 0
4 years ago
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