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romanna [79]
3 years ago
6

PLEASE HELP WITH THIS ONE QUESTION

Mathematics
1 answer:
poizon [28]3 years ago
6 0

Answer:

2nd, 3rd and 4th answers are true

Step-by-step explanation:

1)false \\  \\ 2)16 {x}^{2}  - 64 {y}^{2}  \\  {4}^{2}  {x}^{2} -  {8}^{2}   {y}^{2}  \\ (4x - 8y)(4x + 8y) =  > true \\  \\ 3) {x}^{2}  - 169 \\  {x}^{2}  -  {13}^{2}  \\ (x + 13)(x - 13) =  > true \\  \\ 4) {9x}^{2}  - 1 \\  {3}^{2}  {x}^{2}  -  {1}^{2}  \\ (3x - 1)(3x + 1) =  > true \\  \\ 5)false

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Worth 60 points
alex41 [277]

Answer:

Line y = -x + 2 intersects line y = 3x + 1

Step-by-step explanation:

The solution to a system of equations is the point at which the two lines intersect.  To find this point, first equate the equations and solve for x:

\begin{aligned}y & = y\\-x + 2 & = 3x + 1\\-x+2+x & = 3x+1+x\\2 & = 4x + 1\\2-1 & =4x+1-1\\1 &=4x\\x & =\dfrac14\end{aligned}

Substitute the found value of x into one of the equations, and solve for y:

y=3\left(\dfrac14\right)+1=\dfrac74

Therefore, the solution to the system of equations (the point at which the two lines intersect) is:

\left(\dfrac14,\dfrac74\right)

So the description that best describes the solution to the system of equations is:

Line y = -x + 2 intersects line y = 3x + 1

3 0
2 years ago
What's x if 3x = 84?
Ket [755]

Answer:

answer is 28

Step-by-step explanation:

3x=84

x=84/3= 28

7 0
3 years ago
Please answer the area please
Nata [24]

The area of a trapezoid is:

A = \frac{a + b}{2} h

A = area

a = base 1

b = base 2

h = height

Area = unknown

base 1 = 2.5

base 2 = 7.5

height = 2.5

^^^Plug these numbers into the formula!

A = (\frac{2.5 + 7.5}{2} )(2.5)

A = (10/2)(2.5)

A = (5)(2.5)

A = 12.5

Hope this helped!

4 0
3 years ago
On a 15 scale drawing of a car, one part is 8 inches long. How long will the actual car part be?
Mamont248 [21]
To find your answer out , Multiply 8 by 5 giving u 40 inches . So your answer will be 40 inches long .
3 0
4 years ago
Read 2 more answers
How can I find the difference of the median and mode
malfutka [58]
The median is 8 and the mode is 6, therefore the difference between the median and the mode is 2
6 0
3 years ago
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