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mestny [16]
3 years ago
8

7th grade math pls help

Mathematics
1 answer:
Bogdan [553]3 years ago
6 0

Answer:

Step-by-step explanation:

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Which expression is a factor of 9x^2-4x+1 ( ps ^2 is an exponent)
erastovalidia [21]

Answer:

The discriminant b2−4ac < 0, the equation has no real number solutions, it has complex solutions

Step-by-step explanation:

9x² - 4x + 1 = 0     ax² + bx + c = 0

The discriminant: b² - 4ac = (-4)² - 4*9*1 = 16 - 36 = -20

b2−4ac < 0, the equation has no real number solutions, it has complex solutions

3 0
3 years ago
I’m confused on this one
serious [3.7K]
The answer is 13.

Because this is a kite, the diagonals intersect perpendicularly or with a 90° angle.

In the triangle DIC, which is a right triangle, the legs are 5 and 12. To find the hypotenuse, we use Pythogarean theorem:
{a}^{2}  +  {b}^{2}  =  {c}^{2}
Plug in the givens:
{5}^{2}  +  {12}^{2}  =  {c}^{2}
Take the squares:
25 + 144 = 169  =  {c}^{2}
Take the square root of both sides:
\sqrt{169}  =   \sqrt{ {c}^{2} }  \\  \\ c = 13
We find the line segment DC. In the question it says "BD = DC". So BD is equal to 13.
5 0
3 years ago
Solve the equation x1/3=2
NemiM [27]

Step-by-step explanation:

X1/3=2

X1=2×3

X1=5

x=5/1

4 0
3 years ago
Please someone explain the question and explain the answers probably
Taya2010 [7]
Okay so all you are doing is filling out the char to do this you fine the increasing rate or the pattern. so 2*3=6 5*3=15 so the pattern is that you are multiplying every input by 3 so 0*3=0 
1*3=3 
3*3=9
4*3=12
then to fine the differences you just simply write how much you increased or decreased so every difference for this chart will be +3 hope this helped you have an amazing day!!!!
3 0
3 years ago
Please answer<br><br><br>show working out please!!!!!!!!
Nikitich [7]
It's as easy as I solved it

7 0
3 years ago
Read 2 more answers
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