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Artyom0805 [142]
3 years ago
8

PLEASE HELP!!! Use the Quadratic function to predict f(x) if x equals 8

Mathematics
1 answer:
victus00 [196]3 years ago
7 0

f(8) = 25 {(8)}^{2}  - 28(8) + 585 \\  = 1600 - 224 + 585 \\  = 1961
C. f(8) = 1961
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Josh biked to the park at an average speed of 14 mph. He returned home at an average speed of 10 mph. If Josh spent a total of 2
VikaD [51]

Answer:

Let the distance from home to the park be x

Going to the park

Distance=vt

x=14t¹ ——(1)

Going back home

x=10t² ——(2)

Total time=t¹+t²

2.5=t¹+t²

Solving equ. 1 and 2 simultaneously

10x=140t¹

14x=140t²

Adding

4x=140(t¹+t²)

24x=140(2.5)

x=14.58 miles

Total distance= 2x

= 29.16miles

Step-by-step explanation:

6 0
4 years ago
(-5/6x+51/2)-(2/3x+4)
stiv31 [10]

Answer:

-1.5x + 21.5 (or (43-3x)/2)

Step-by-step explanation:

(-5/6x + 51/2) - (2/3x + 4)

<em>First, find the opposite of 2/3x + 4 because of the negative sign.</em>

-5/6x + 51/2 - 4/6x - 4

<em>Now combine -5/6x and -4/6x to get -9/6x or -3/2x</em>

-3/2x + 51/2 - 4

<em>Convert 4 into 8/2 since 51/2 is a fraction.</em>

-3/2x + 51/2 - 8/2

<em>Since the denominators of 51/2 and -8/2 are the same, just subtract 51 and 8 to get 43.</em>

-3/2x + 43/2

<em>-3/2x and 43/2 have the same denominator (2), so you can just put it like this (It's up to you!):</em>

(43-3x)/2

The answer to (-5/6 + 51/2) - (2/3x + 4) is -3/2x + 43/2 (or (43-3x)/2)

<em>Or you could put it like this (I converted both -3/2 and 43/2 to a decimal.)</em>

-1.5x + 21.5

6 0
3 years ago
What is the mode for the set of data shown below?45, 23, 16, 78, 24, 39, 95, 23, 25, 93, 49, 45, 83, 90, 14, 23
Ganezh [65]
The mode is the most frequently occurring value, so the answer is 45
3 0
4 years ago
Read 2 more answers
Find the coordinates of the center of the circle with the equation:<br> 2<br> 3)2 + (y + 1)2 = 14
Mumz [18]

Answer:

go to photo math

Step-by-step explanation:

7 0
3 years ago
A tiny but horrible alien is standing at the top of the empire state building (which is 443 meters tall) and threatening to dest
valentina_108 [34]

Answer: 87.7^{\circ}


Step-by-step explanation:

Height of the building AB= 443 meters

Distance between the building and the agent at the ground BC= 18 meters

Let x be the angle the agent should shoot his laser gun

Since ΔABC is a right triangle, then

\tan\ x=\frac{AB}{BC}

\Rightarrow\tan\ x=\frac{443}{18}\\\Rightarrow\tan\ x=24.6111\\\Rightarrow\ x=\tan^{-1}(24.61)\\\Rightarrow\ x=87.67^{\circ}\approx87.7^{\circ}




7 0
3 years ago
Read 2 more answers
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