2 years ago

Solve x^2−2x=5 by completing the square. Round your answer to the nearest hundredth.

Mathematics

1 answer:

Masja [62]2 years ago

3 0

Answer: i dont see a square

Step-by-step explanation:

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Samira buys a car the car loses 23% of its value in the first year. at the end of the first year her car is worth 6575.80 dollar

Andreyy89

Answer: Samira paid $8540 for her car.

Step-by-step explanation:

Let x = Amount paid by Samira for her car.

Given: Depreciation rate = 23%

Worth of car after one year = $ 6575.80

As per given,

x - 23 % of x = 6575.80

⇒ x - 0.23x = 6575.80

⇒ 0.77x= 6575.80

⇒ x= $8540 [Divide both sides by 0.77]

Hence, Samira paid $8540 for her car.

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3 years ago

Cual es la raiz cuadrada de 202

bezimeni [28]

Answer:

14.2126704036

Step-by-step explanation:

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3 years ago

Two neighbors both have rectangular swimming pools in thir backyards. one neighbors pool has dimensions that are twice as great

olga nikolaevna [1]

It would be b) 2:1 (:

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3 years ago

Verify that [tan(theta) + cot(theta)]^2 = sec^2(theta) + csc^2(theta)

Wittaler [7]

(tanθ + cotθ)² = sec²θ + csc²θ

Expand left side: tan²θ + 2tanθcotθ + cot²θ

Evaluate middle term: 2tanθcotθ = $2*\frac{sin\theta}{cos\theta}*\frac{cos\theta}{sin\theta}$ = 2

⇒ tan²θ + 2+ cot²θ

= tan²θ + 1 + 1 + cot²θ

Apply trig identity: tan²θ + 1 = sec²θ

⇒ sec²θ + 1 + cot²θ

Apply trig identity: 1 + cot²θ = csc²θ

⇒ sec²θ + csc²θ

Left side equals Right side so equation is verified

7 0

3 years ago

What does "a"equal to?

slamgirl [31]

Distribute on the left side
7.4a+22.2=3.2a+43.2
Subtract 3.2a from both sides
4.2a+22.2=43.2
Subtract 22.2 from both sides
4.2a=21
Divide both sides by 4.2
a=5

5 0

3 years ago