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I am Lyosha [343]
2 years ago
14

Solve the equation using the square root property. Show your work, please! 5x^2 + 80 = 0

Mathematics
1 answer:
Phantasy [73]2 years ago
4 0

Answer:

Isolate the variable by dividing each side by factors that don't contain the variable.

x  =  4 i,  - 4 i

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If f(x) is a linear function and the domain of f(x) is the set of all real numbers, which statement cannot be true?
Georgia [21]

Answer:

The Answer is C.

Step-by-step explanation:

6 0
3 years ago
What is the distance between (-2,2) and (2,-1) on coordinate plane
lawyer [7]

Answer:

d=\sqrt(x2-x1)^{2}  + (y2-y1)^{2}

Step-by-step explanation:

1- Identify the x and  the y

x1= -2

x2=2

y1= 2

y2= -1

2-

2- solve the equation:

d=\sqrt\(2-(-2))^{2}  + ((-1)-2)^{2}

d= \sqrt(4)^{2}        + (-3)^{2}

= \sqrt16        + 9

= \sqrt25

d=5 answer

6 0
3 years ago
Tickets to the concert were 2.50 for adults and 1.00 for students. 1,200 was collected and 750 tickets were sold.
Minchanka [31]

Answer:

I'm assuming you want to know the amount of child and adult tickets sold. 450 student tickets were sol, and 300 adult tickets.

Step-by-step explanation:

Solve for the first variable in one of the equations, then substitute the result into the other equation.

3 0
3 years ago
If he = 7x -27 find the value of x
Amiraneli [1.4K]

\\ \sf\longmapsto 7x-27=1

\\ \sf\longmapsto 7x=1+27

\\ \sf\longmapsto 7x=28

\\ \sf\longmapsto x=\dfrac{28}{7}

\\ \sf\longmapsto x=4

5 0
3 years ago
How do I determine which is y=-1/3x+2?
Jlenok [28]

Step-by-step explanation:

This is a linear equation in slope intercept form which is

y = mx + b

where m is the slope and b is the y intercept.

The equation

y =  -  \frac{1}{3} x + 2

Has a slope of -1/3 so this means that the slope will be decreasing. A negative linear equation increases as we go left. and decreases as we go right. The y intercept is 2. So this means the graph must pass through (0,2) and when x=0, y must be 2.

In other words, look for a line that the y values increase as we go left and decrease we go right. Also look for a point (0,2) and make sure the graph pass through it.

6 0
3 years ago
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