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xxTIMURxx [149]
3 years ago
7

A policeman is standing near a highway using a radar gun to catch speeders. He aims the gun at a car that has just passed his po

sition and, when the gun is pointing at an angle of 45(degrees) to the direction of the highway, notes that the distance between the car and the gun is increasing at a rate of 100km/h. How fast is the car travelling?
...?
Mathematics
1 answer:
Serhud [2]3 years ago
4 0
The speed obtained is the y-component of the actual speed of the car. The y-component and actual speed are related by:
Vy = Vsin(∅)
100 = Vsin(45)
V = 141.4 km/h
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Help and please explain so I can do it on my own. There are a couple more on this sheet.​
Andreas93 [3]

Answer:

(2, -10)

Step-by-step explanation:

so first i find the axis of symmetry using the equation x= -b/2a

in this problem

a=3

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c= 2

- (-12)/ 2(3) = 2

2 will be the x point for your vertex

you then plug in your x point into the original equation and solve for y

y = 3(2)^2 - 12(2) +2

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8 0
3 years ago
How many solutions does this system of equations have?
victus00 [196]
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4 0
1 year ago
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What is the value of x in this triangle
polet [3.4K]

Answer:

A

Step-by-step explanation:

if x is the least it only makes common sense

HOPE THIS HELPS!

5 0
3 years ago
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Kent and Bradley both work at a car dealership. Kent makes $10/hour + 3% on the amount of sales he completes. Bradley only makes
Masteriza [31]

Answer: There is difference of $660 in their paychecks.

Step-by-step explanation:

Since we have given that

Number of hours in one week they worked = 40

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So, the equation for Kent becomes,

10\times 40+\frac{3}{100}\times 78000\\\\=400+3\times 780\\\\=400+2340\\\\=\$2740

Similarly, Bradley only makes $7 per hour but he makes 4% on the amount of his sales .

So, the equation for Bradley becomes,

7\times 40+\frac{4}{100}\times 78000\\\\=280+4\times 780\\\\=280+3120\\\\=\$3400

hence, the difference between of their paychecks is given by

\$3400-\$2740\\\\=\$660

Therefore, there is difference of $660 in their paychecks.

3 0
3 years ago
Answer ASAP pleaseeee !!!!
Eddi Din [679]

x=8.9 because when you square it and divide you get 39.6.. rounded to 40.

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3 years ago
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