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andreev551 [17]
3 years ago
6

What are the solutions of the following system? startlayout enlarged left-brace 1st row x squared y squared = 25 2nd row 2x y =

25 endlayout (0, –5) and (–5, 5) (0, –5) and (5, –15) (0, –5) and (–4, 3) (0, –5) and (4, –13)
Mathematics
1 answer:
salantis [7]3 years ago
6 0

The quadratic equation has no real roots. This means the line and point has no point of intersection.

<h3>System of equations</h3>

System of equations are equations that is more than one and have two or more unknowns.

Given the simultaneous equation

x^2 + y^2 = 25

2x + y = 25

from equation 2;

y = 25 - 2x ................3

Substitute equation 3 into 1 to have:

x^2 + (25-2x)^2 = 25

x^2 + 625 - 100x + 4x^2 = 25

5x^2 -100x + 600 = 0

x^2 -20x + 120= 0

Hence the quadratic equation has no real roots. This means the line and point has no point of intersection,

Learn more on system of equation here: brainly.com/question/25976025

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Help? I forgot how to do this lol I have really bad memory
pashok25 [27]
\dfrac{2}{3} \times  \dfrac{3}{4}  \times  \dfrac{1}{2}

Cancel out 2, the common factor for the numerator and denominator:

=  \dfrac{1}{3} \times  \dfrac{3}{4}  \times  \dfrac{1}{1}

Cancel out 3, the common factor for the numerator and denominator:

=  \dfrac{1}{1} \times  \dfrac{1}{4}  \times  \dfrac{1}{1}

Combine into single fraction:

=  \dfrac{1 \times 1 \times 1}{1 \times 4 \times 1 }  =  \dfrac{1}{4}

\bf \text {Answer = }  \dfrac{1}{4}

8 0
3 years ago
During the semester, all the students in a statistics class kept track of the number of mailings they received from a predatory
Verdich [7]

Answer:

The first step on this case is order the dataset on increasing way, and after do this we got:

11 14 15 16 17 17 18 19 21

We have a sample size of n =9

And in order to find the 75th percentile we need to find the position for this percentile with this formula:

n_{75} = 0.75* 9= 6.75\approx 7

So then we can conclude that the 75th percentile would be approximately on the 7 position of the dataset ordered and we got:

x_{75} = 18

Step-by-step explanation:

For this case we have the following data:

16 17 11 21 15 14 17 18 19

The first step on this case is order the dataset on increasing way, and after do this we got:

11 14 15 16 17 17 18 19 21

We have a sample size of n =9

And in order to find the 75th percentile we need to find the position for this percentile with this formula:

n_{75} = 0.75* 9= 6.75\approx 7

So then we can conclude that the 75th percentile would be approximately on the 7 position of the dataset ordered and we got:

x_{75} = 18

8 0
3 years ago
If the number of degrees in a certain angle added to the number of grades in the angle is 76, find the angle in degrees.
Anni [7]
X=angle
x+(10/9)x=(19/9)x=76
x=(76*9/19)=36
5 0
3 years ago
Can someone plz help me
Illusion [34]
First rectangle:
Has 3 cubes in each 5 layers, and imagine it, so we have all dimension needed which is:
l=3 unit
w=1 unit
h=5 unit.
V=l×w×h
V=3×1×5
V=15 cubic inches.

Second rectangular:
Doing the same like that to get:
l=5 unit
w=1 unit
h=3 unit
V=15 cubic inches. As a result, there are no prism that are greater to each other, which mean that they have the same volume of 15 cubic inches. Hope it help!
6 0
3 years ago
Find the approximate side length of a square game board with an area of 189 in².
Ber [7]
Answer is 13.75 inches for each side of the square board

Step by step

A square with an area of 189 in sq. , take square root of 189 = 13.75 inches
5 0
2 years ago
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