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baherus [9]
2 years ago
6

Please help .!!!!!!!!!!!!!!!

Mathematics
1 answer:
Yuliya22 [10]2 years ago
4 0

This being a piecewise function, trying to solve f(2), we must find which two equations we can use.

We can use the function '3x + 1' because its domain is 'x is greater than or equal to 2

   --> <u>f(2) = 3(2) + 1 = 7</u>

<u></u>

<u></u>

Hope that helps!

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Find an ordered pair (x, y) that is a solution to the equation.<br><br> x-5y=5
timurjin [86]

Answer:

(x,y)=(0,-1)

Step-by-step explanation:

Observe that the equation x-5y=5 can be transformed in the equation of a line

x-5y=5\\-5y=5-x\\y=\frac{x-5}{5}\\y=\frac{1}{5}x-1

Since x can take any value then the equation has infinite solutions. But we need only an solution (x,y). Then, taking x=0 we have that y=\frac{1}{5}*0-1=-1.

Therefore the ordered pair (x,y)=(0,-1) is a solution of the equation.

4 0
4 years ago
2|y+3|-8=0<br> Solve the absolute value equation and enter the solution in set notation.
UNO [17]
2|y+ 3| = 8
|y+3| = 4

y = 1, 7 or -7

hope this helps
8 0
3 years ago
The base of each triangle measures 2 centimeters and the perimeter of each triangle is 10 centimeters. What is the approximate t
tia_tia [17]
Since the triangles make up a spinner, the triangles are isosceles.
The base is 2 cm and the perimeter is 10 cm.
The measure of the two legs can be determined from
2 + 2x = 10
Where is the length of the leg
Solving for x
x = 4
The area an isosceles is calculated using
A =  \frac{1}{2}  b^{2}   \sqrt{ \frac{ b^{2} }{ x^{2} }- \frac{1}{4}  }
where b is the length of the base
Substitute the values and multiply with the number of triangles in the spinner
4 0
3 years ago
Read 2 more answers
Translate the phrase into an algebraic expression the product of 7 and c​
lana66690 [7]

Answer:

7 x c

Step-by-step explanation:

product means multiply so you just multiply them

8 0
3 years ago
Daniel wanted to know his approximate score on the final exam for his mathematics class. His professor hinted that his score was
hammer [34]

Answer:   The raw score for Daniel's exam grade is 101.69.

Step-by-step explanation:

For x be any random variable.

Formula for z-score :

z=\dfrac{x-\mu}{\sigma} , where \mu = population mean

\sigma = population standard deviation.

Let x be the raw score for Daniel's exam grade.

As per given , we have

\mu=90 , \sigma=7 and z= 1.67 , put these values in the above formula , we get

1.67=\dfrac{x-90}{7}\\\\\Rightarrow\ x-90=7(1.67)=11.69\\\\\Righarrow\ x=11.69+90=101.69

Hence, the raw score for Daniel's exam grade is 101.69.

8 0
3 years ago
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