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Gennadij [26K]
3 years ago
6

Could you please answer this question?

Mathematics
2 answers:
sdas [7]3 years ago
8 0

Answer:

y=-2

Step-by-step explanation:

Juli2301 [7.4K]3 years ago
5 0

Answer:

.

Step-by-step explanation:

3x - y = 17 .......A

10 × [x/5 + y/2] = 10 × 0

2x + 5y = 0 .......B

......A× 5 both 2 sides of equation

15x - 5y = 85 .....C

......B + ........C

2x + 15x = 0 + 85

17x = 85

x = 85/17

x = 5

put x value in ........A or .......B or ......C

you will receive y = -2

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A ball is thrown into the air with a velocity of 34 ft/s. It's height in feet after t seconds is given by y=34t-26(t)^2. Find th
kkurt [141]

Answer:

The average velocity of the ball at the given time interval is -122.3 ft/s

Step-by-step explanation:

Given;

velocity of the ball, v = 34 ft/s

height of the ball, y = 34t - 26t²

initial time, t₀ = 3 seconds

final time, t = 3 + 0.01 = 3.01 seconds

At t = 3 s

y(3) = 34(3) - 26(3)² = -132

The average velocity of the ball in ft/s is given as;

V_{avg} = \frac{y(3.01)-y(3)}{3.01 -3}\\\\V_{avg} = \frac{34(3.01)-26(3.01)^2-y(3)}{3.01 -3}\\\\V_{avg} = \frac{-133.223-y(3)}{0.01}\\\\V_{avg} = \frac{-133.223-(-132)}{0.01}\\\\V_{avg} =\frac{-1.223}{0.01}\\\\V_{avg} = -122.3 \ ft/s

Therefore, the average velocity of the ball at the given time interval is -122.3 ft/s

8 0
3 years ago
The cost of manufacturing x refrigerators is given by the function f(x)=2x^2+6000. If the cost doubles fr the year 2011 owing to
Alecsey [184]

Answer:  Vertical Stretch

Step-by-step explanation:

Given: The cost of manufacturing x refrigerators is given by the function :f(x)=2x^2+6000

If the cost doubles fr the year 2011 owing to higher raw material prices, then we multiply the given function by 2, then we get a new function :

g(x)=2(2x^2+6000)=4x^2+12000 which represents a vertical stretch in the graph.

∵ 2 is a positive constant  greater than 1 which is multiplied to the parent function f(x). So by the definition of vertical stretch the parent function will be vertically stretched .  

6 0
3 years ago
Please help this is worth 15 points!
irina1246 [14]

Answer:

A

Step-by-step explanation:

3 0
3 years ago
using the pythagorean theorem find the length of a leg of a right triangle if the other leg is 8 feet long and the hypotenuse is
gayaneshka [121]
L  7                 10
l     7
l        7
l           7
l              7
__________   8


(8)squared+b squared=10 squared
64+b=100         subract 64
now fiquere out what sauqered =36
wich is 6 so the last side is 6

6 0
3 years ago
Help me and you get 40 points
victus00 [196]

Answer:

The angle 6 measures 54 degrees

Step-by-step explanation:

Angle 6 is congruent to angle 7 ("-2x+34") as it is an opposite angle in straight line intersection. But angle 6 is congruent to angle 2 (-9x-36) due to the two horizontal lines being parallel. So we can write the following equality to determine the value of x:

-2x + 34 = -9x -36

7x = -70

==> x = -10

Now we can answer the question:  the angle 6 is

-2x + 34 = -2(-10)+34 = 54 degrees

7 0
3 years ago
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