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Alex_Xolod [135]
3 years ago
8

Help please I forgot my notesNeed answers asap- it's due in a few hours​

Mathematics
1 answer:
ahrayia [7]3 years ago
4 0

I'm not to sure if I know the other ones but number 12th Is 6

Step-by-step explanation:

Since the two lines intersect at point Q(x,y) the x & y values of both lines must be equal at point Q. so 3x+14=7x-10. Solving for x yields x = 6.

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45 units and is centered at
mariarad [96]

The correct question is:

A circle has a radius of 45 units and is centered at (-2.4, -4.8).

What is the equation of this circle?

Answer:

Equation of the circle is;

(x + 2.4)² + (y + 4.8)² = 2304

Step-by-step explanation:

The standard equation of a circle is;

(x - a)² + (y - b)²  =  r²

where;

(a,b) is the center of the circle and r is the radius of the circle

Now, from the question, the circle is centered at (-2.4, -4.8) and the radius is 45

Thus, plugging those values into the standard form of equation of a circle, we have;

(x - (-2.4))²  +  (y - (-4.8))²  = 48²

This gives;

(x + 2.4)² + (y + 4.8)² = 2304

3 0
3 years ago
What is the solution set of the quadratic equation 8x2 +2x +1 =0?
Sidana [21]
   
\displaystyle\\
 8x^2 +2x +1 =0\\\\
x_{12}=\frac{-b\pm \sqrt{b^2-4ac}}{2a}=\frac{-2\pm \sqrt{2^2-4\cdot 8 \cdot 1}}{2\cdot 8}=\\\\
=\frac{-2\pm \sqrt{4-32}}{16}=\frac{-2\pm \sqrt{-28}}{16}=\frac{-2\pm \sqrt{4\cdot 7\cdot(-1)}}{16}=\\\\
=\frac{-2\pm 2i\sqrt{7}}{16}=\frac{-1\pm i\sqrt{7}}{8}= -\frac{1}{8}\pm  \frac{\sqrt{7}}{8}i\\\\
x_1 =   \boxed{-\frac{1}{8}+  \frac{\sqrt{7}}{8}i}\\\\
x_2 =   \boxed{-\frac{1}{8}-  \frac{\sqrt{7}}{8}i}\\\\
x_1,~x_2~\in \mathbb{C}



4 0
3 years ago
A shop owner wants to market a new vest. The vest distributor will charge a reduced price for one size of the owner’s choice. Th
AlladinOne [14]
The answer is 44 because the definition of Mode is the number that appears the most. The correct answer is A
7 0
3 years ago
Which words in the sentence are the complete noun clause?
Sliva [168]
D
fgfjyngjghggggggggggggg

4 0
3 years ago
How many terms are in this expression? 4x + 3y - 12x + 5
Vladimir79 [104]
There are 4 terms in the expression.

Terms are each of the entities.

4x,  + 3y ,  -12x,   +5
5 0
3 years ago
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