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3 years ago

Complete the square for the expression

Mathematics

1 answer:

Sonbull [250]3 years ago

5 0

Answer:

x^2 + 8x +16

Step-by-step explanation:

Use the formula

( b/2 )^2

*the b in this trinomial would be 8

in order to create a new term in order to find the perfect square trinomial.

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Which of the following is not closed under the operation being performed ?

photoshop1234 [79]

The answer is c because I checked the math on the paper.

8 0

4 years ago

Please help thank you

OLga [1]

Answer:

∑ n^2

n=1

Step-by-step explanation:

There are 6 terms in the series, so we sum from 1 to 6

The terms are the integers squared

1^1, 2^2, 3^2 4^2, 5^2 6^2 or n^2

∑ n^2

n=1

7 0

3 years ago

The braking distance, in feet of a car a Travling at v miles per hour is given.

irakobra [83]

The braking distance is the distance the car travels before coming to a stop after the brakes are applied

a. The braking distances are as follows;

The braking distance at 25 mph, is approximately 63.7 ft.

The braking distance at 55 mph, is approximately 298.35 ft.

The braking distance at 85 mph, is approximately 708.92 ft.

b. If the car takes 450 feet to brake, it was traveling with a speed of 98.211 ft./s

Reason:

The given function for the braking distance is D = 2.6 + v²/22

a. The braking distance if the car is going 25 mph is therefore;

25 mph = 36.66339 ft./s

$D = 2.6 + \dfrac{36.66339^2}{22} = 63.7 \ ft.$

At 25 mph, the braking distance is approximately 63.7 ft.

At 55 mph, the braking distance is given as follows;

55 mph = 80.65945 ft.s

$D = 2.6 + \dfrac{80.65945^2}{22} \approx 298.35 \ ft.$

At 55 mph, the braking distance is approximately 298.35 ft.

At 85 mph, the braking distance is given as follows;

85 mph = 124.6555 ft.s

$D = 2.6 + \dfrac{124.6555^2}{22} \approx 708.92 \ ft.$

At 85 mph, the braking distance is approximately 708.92 ft.

b. The speed of the car when the braking distance is 450 feet is given as follows;

$450 = 2.6 + \dfrac{v^2}{22}$

v² = (450 - 2.6) × 22 = 9842.8

v = √(9842.2) ≈ 98.211 ft./s

The car was moving at v ≈ 98.211 ft./s

Learn more here:

brainly.com/question/18591940

8 0

2 years ago

PLEASE PLEASE HELP IVE BEEN STUCK ON THIS FOR TOO LONG

stellarik [79]

Answer:

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

ONCE I HIT 30 ILL GIVE YOU 100 Points if i get a good grade Maybe even more

N76 [4]

Answer:

The correct anwser is 2x+5<4

Step-by-step explanation:

8 0

3 years ago