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tatiyna
3 years ago
15

Correct and smartest answer gets brainliest and full ratings. :)

Mathematics
2 answers:
Naddik [55]3 years ago
8 0
The answer is C) y=-5/2x-3
anygoal [31]3 years ago
3 0
If 2 lines are perpendicular then the product of their slopes  will be -1

so 2/5  * m = -1   where m is the slope of the line

m = -1  / 2/5  = -5/2

It's  C
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Find the y-intercept and x-intercept of the line.<br> – 3x+9y= 14
pickupchik [31]

Answer:

\huge\boxed{x-intercept=-\dfrac{14}{3}=-4\dfrac{2}{3}}\\\boxed{y-intercept=\dfrac{14}{9}=1\dfrac{5}{9}}

Step-by-step explanation:

-3x+9y=14\\\\x-intercept\ \text{for}\ y=0:\\\\-3x+9(0)=14\\-3x+0=14\\-3x=14\qquad\text{divide both sides by (-3)}\\\boxed{x=-\dfrac{14}{3}=-4\dfrac{2}{3}}}

y-intercept\ \text{for}\ x=0:\\\\-3(0)+9y=14\\0+9y=14\\9y=14\qquad\text{divide both sides by 9}\\\boxed{y=\dfrac{14}{9}=1\dfrac{5}{9}}

3 0
3 years ago
A direct variation includes the points (21,7) and (27,Y. Find<br>value of y.<br>​
rjkz [21]

Answer:

13

Step-by-step explanation:

5 has been added by the 21 to make 27 to leave with adding 5 to old y and leaving the new variable y 13

3 0
3 years ago
Please help!! I need to finish this quick
Natalija [7]
Theorem: pythagorean

Equation: 5^2 + h^2 = 8^2

Solving:

25 + h^2 = 64
h^2 = 39
h =
\sqrt{39 }


Hope this helps!! :)
4 0
3 years ago
BRAINLIEST ASAP!!!
Anarel [89]
Part A: the radicand is the same as the discriminant, therefore is b2 - 4ac
In 9x^2 - 16x + 60 = 0, a = 9, b = -16, c = 60
so b2 - 4ac =
{b}^{2}  - 4ac =  {( - 16)}^{2}  - 4(9)(60) \\  = 256 - 2160 = 1904 \\  \sqrt{1904}  =  + 43.63 \: and \:  - 43.63

Part B: Solve 4x^2 + 8x - 5 = 0
What would make 8? (5×2)-2 = 8, so:
(2x+5)(2x-1) = 0
2x+5 = 0
2x = -5
x = -5/2
2x-1 = 0
2x = 1
x = +1/2
So the solutions are: -5/2, +1/2
5 0
3 years ago
How many numbers must be selected from the set
USPshnik [31]
<span>There are 4 pair of numbers that add up to 16. So you would need to choose at least 5 numbers to ensure that you got at least one of those pairs.</span>
5 0
3 years ago
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