3 years ago

PLEASE HELP!! Anyone??

Mathematics

1 answer:

klasskru [66]3 years ago

3 0

Replace P with 15:

d = -3(15)^2 + 168(15) - 315

d = -3(225) + 2520 - 315

d = -675 + 2520 -315

d = 1530

You might be interested in

Help pleae look at the picture!

notsponge [240]

Line a and b are perpendicular

3 0

2 years ago

What is 486 divided by 6?

velikii [3]

486 divided by 6 is 81

5 0

3 years ago

Read 2 more answers

solve the equation. Justify each step. 5x - 11 = 34 Plzzz help me this needs to be explained in essay form.

Helga [31]

Answer:

x = 9

Step-by-step explanation:

5x -11 (+11) = 34 (+11)

5x = 45

5x ÷ 5 = 45 ÷ 5

x = 9

4 0

3 years ago

2. Flying to Kampala with a tailwind a plane averaged 158 km/h . On the return trip the plane only averaged 112 km/h while flyin

stiv31 [10]

Answer:

Speed of plane in still air = 135 km/h

Speed of wind = 23 km/h

Step-by-step explanation:

Given that:

Speed of plane with the wind = 158km/h

Speed of plane against the wind = 112km/h

Let,

x be the speed of plane

y be the speed of wind

According to given statement;

x+y = 158 Eqn 1

x-y = 112 Eqn 2

Adding Eqn 1 and 2

$x+y+x-y=158+112\\2x = 170\\\frac{2x}{2}=\frac{270}{2}\\x=135$

Putting x = 135 in Eqn 1

135+y = 158

y = 158-135

y = 23

Hence,

Speed of plane in still air = 135 km/h

Speed of wind = 23 km/h

8 0

3 years ago

Find the slope of the line whose equation is 17 + 3y = 7x.

svetoff [14.1K]

17 + 3y = 7x
3y = 7x - 17
y = 7/3x - 17/3
= 7/3

4 0

3 years ago