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3 years ago

PLEASE ANSWER ASAP WORTH 45+ POINTS. FIRST TO ANSWER GETS BRAINLIEST

Mathematics

1 answer:

Arlecino [84]3 years ago

6 0

Answer:

325.28

Step-by-step explanation:

Cross Multlipy

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Licemer1 [7]

5.27 Hope this helps!!

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2 years ago

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sergeinik [125]

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3 years ago

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Strike441 [17]

Answer:

Option C and D

Step-by-step explanation:

For a quadratic function having no x-intercepts the discriminant should be less than 0 .

$D=b^2-4ac$

Now if this is less than zero if we plug in the values of a, b and c the square root of a negative number cannot be calculated thus giving us no real x-intercepts.

$x=-b+-\frac{\sqrt{b^2-4ac} }{2a} \\\\x=-b+-\frac{\sqrt{D} }{2a}$

Here we can see that if we the value of D is less than zero the square would not be possible thus our correct choices are ,

Option C and D

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3 years ago

Help<br> Which one is for 1,2 ,and 3

Naily [24]

X-5, y+9

because -5 then positive 5 up

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3 years ago

Write the equation of the line that passes through the points (−8,4) and (−3,7). Put your answer in fully reduced point-slope fo

andreyandreev [35.5K]

Answer:

$y = \frac{3}{5} x + 8 \frac{4}{5}$

Step-by-step explanation:

<u>Point slope form</u>

y=mx +c, where m is the gradient and c is the y-intercept.

To find the gradient, use the formula below:

$gradient = \frac{y1 - y2}{x1 - x2}$

$m = \frac{7 - 4}{ - 3 - ( - 8)} \\ m = \frac{3}{ - 3 + 8} \\ m = \frac{3}{5}$

Substitute the value of m into the equation

$y = \frac{3}{5} x + c$

To find c, substitute a coordinate into the equation.

When x= -3, y=7,

$7 = \frac{3}{5}( - 3) + c \\ 7 = - \frac{9}{5} + c \\ c = 7 + \frac{9}{5} \\ c = 8 \frac{4}{5}$

Thus, the equation of the line is $y = \frac{3}{5} x + 8 \frac{4}{5)$

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3 years ago