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lawyer [7]
3 years ago
15

Please answer CORRECTLY !!!!!!! WILL MARK BRAINLIEST !!!!!!!!

Mathematics
2 answers:
siniylev [52]3 years ago
7 0

Answer: its -13

Step-by-step explanation:

-5x -4y= -8

-5            -5

=-13

so f(x)= -13

Hope this helps :)

liq [111]3 years ago
5 0

Answer:

f(x)= -\frac{5}{4}x+2

Step-by-step explanation:

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A baker knows that the daily demand for mango pies is a random variable that follows the normal distribution with a mean of 45.4
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2 years ago
A bullet is fired straight up from a gun with initial velocity 1120 feet per second at an initial height of 8 feet. Use the form
Dafna1 [17]

Answer:

70 seconds

Step-by-step explanation:

Given that;

The initial velocity v_o of the bullet fired = 1120 ft/s

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The expression to determine how many seconds it takes the bullet to hit the ground is:

h = -16t^2 +v_ot + 8

Thus;

Replacing the value of v_o =  1120 and h = 0 (i.e. when h =0) in the above expression; we have:

0= -16t^2 +(1120)t + 8

=  -16t^2 +(1120)t + (8-0)

= -16t² + 1120t + 8

mulitiply through by (-)

= 16t² -1120t - 8

Divide through by 8

= 2t² -  140t - 1

The above expression forms a quadratic equation.

where;

a = 2

b = -140

c = - 1

So, by using the quadratic formula \dfrac{-b \pm \sqrt{b^2-4ac}}{2a}, we have:

= \dfrac{-(-140) \pm \sqrt{(-140)^2-4(2)(-1)}}{2(2)}

= \dfrac{140 \pm \sqrt{19600-(-8)}}{4}

= \dfrac{140 \pm \sqrt{19608}}{4}

= \dfrac{140 \pm 140}{4}

=\dfrac{140+ 140}{4} \ \ \ OR \ \ \  \dfrac{140-140}{4}

=\dfrac{280}{4} \ \ \ OR \ \ \  0

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Thus, the time (in seconds) it took the bullet to it the ground = 70 seconds

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3 years ago
What is the interquartile range (IQR) of the data summarized on the box plot?
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C) 30 * IQR is the box. So the highest point on the box is 95 and the lowest is 65, which makes the difference 30. I hope this helped!!
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3 years ago
Read 2 more answers
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