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Andrej [43]
2 years ago
7

- is running in a long-distance race. If he maintains an average speed of 8 miles per hour, then the distance in miles that he h

as left to run is given by
D(x)= (-2)/15 x+75 where x is the number of minutes since - started the race. Which function is the inverse of D(x)?
Mathematics
1 answer:
UkoKoshka [18]2 years ago
8 0

Answer:

55555

Step-by-step explanation:

56778654368754775556

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What is 83 times 13?
Alexxx [7]

Answer:

1079

Step-by-step explanation:

8 0
2 years ago
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The sum of the squares of two nonnegative numbers is 327. The product of the two numbers is 101. What is the sum of the two numb
Verizon [17]
A) x² + y² = 327
B) x * y = 101
Solving equation B for y²
B) y² = 10,201 / x²
Substituting this into equation A)
x² + 10,201 / x² = 327
x^4 + 10,201 = 327x²
x^4  -327x²  + 10,201 = 0
Using the quartic equation calculator: http://www.1728.org/quartic.htm
x1 = 17.090169943749476
x2 = 5.909830056250525
 
x1 * x2 = 101
x1 + x2 = 23


8 0
3 years ago
Please help me on this question
Alina [70]

Answer:

DE = 13.4 cm  (to 1 decimal place)

Step-by-step explanation:

Given: ABCD is a square

BC = AC = 12 cm    (opposite sides of a square are congruent)

E is midpoint of BC   (given)

BE = EC  = 12/2 = 6 cm

CD = AB = 12 cm   (opposite sides of a square are congruent)

angle ECD is a right angle (interior angles of a square are 90 deg.)

Consider right triangle ECD

DE = sqrt(EC^2+CD^2)    ............. pythagorean theorem

= sqrt(6^2+12^2)

= sqrt ( 36+144 )

= sqrt (180)

= 2 sqrt(45)

= 13.416 (to three dec. places)

8 0
2 years ago
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Write an equation of the perpendicular bisector of the segment with endpoints U(-3,4) and V(9,8)
stealth61 [152]

Answer:

y=-3x+15

Step-by-step explanation:

the midpoint of UV (using the midpoint formula) is (3,6)

the slope of UV= 4/12= (1/3)

perpendicular slope is -3

now find line with slope -3 passing (3,6)

y-6=-3(x-3)

y=-3x+15

5 0
3 years ago
The function shown is reflected across the y-axis to create a new function.
serious [3.7K]

Answer:

D. The range stays the same, but the domain changes

Step-by-step explanation:

4 0
3 years ago
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