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Alinara [238K]
3 years ago
10

Answer this maths challenge question to earn 20... points!! :0

Mathematics
1 answer:
statuscvo [17]3 years ago
7 0

Answer:

first x would be 1 second would 4. And the first y would be 3 and the second one would be 4

Step-by-step explanation:

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Rationalise the denominator of: -7/(√11 - √5)​
tatuchka [14]
-7(sqrt(11)+sqrt(5))/6


Mark brainliest please



Hope this helps
3 0
3 years ago
Read 2 more answers
The sum of the coordinates of the vertex of the parabola at y = x2 + 3 is _____.
Novosadov [1.4K]

Answer: The sum is 3.

Step-by-step explanation:

If we have a parabola, y = a*x^2 + b*x + c

We want to find the point (x, y) that corresponds to the vertex of that parabola.

The vertex of the parabola is at x value:

x = -b/2a

in this case

a = 1, b = 0, c = 3

then our vertex is at:

x = -0/2*1 = 0

Now we evaluate y(x) in this value and get:

y(0) = a*0^2 + 3 = 3

Then the vertex is at the point (0, 3)

the sum of the coordinates of the vertex is:

S = 0 + 3 = 3

7 0
3 years ago
8.) Out of 600 employees, only 270 are happy with their pay. What percent is this? (Please show your work.) *
Gnom [1K]

For this case we can raise a rule of three:

600 employees -------------> 100%

270 employees -------------> x

Where the variable "x" represents the percentage of employees who are satisfied with their salary. So, we have:

x = \frac {270 * 100} {600}\\x = 45

Thus, 45% of employees are satisfied with their salary.

Answer:

45%

5 0
4 years ago
Read 2 more answers
Tell whether a triangle can have sides with the given lengths explain? Explain. 4,7,10
Evgen [1.6K]
Use the pythagorean theorem. So 4^2 + 7^2 = 10^2. Simplify to 16+49=100. This simplifies to 65=100 which is not true so these sides cannot make a triangle.
4 0
4 years ago
Solve the following absolute value equation. ​
cestrela7 [59]

Answer:

x= 8

x= -8

Step-by-step explanation:

|x+1| /3 = 3

|x+1| = 9

|x| + |1| = 9

|x| = 8

x= 8

x= -8

4 0
3 years ago
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