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3 years ago

5

Andy is buying a car. He negotiated a 7% decrease on a £6500 car. He will pay the full balance in 12 equal monthly payments. Cal

culate the amount paid each month

1 answer:

Svetlanka [38]3 years ago

4 0

He would pay 503.75 every month

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3. The circumference of a circle is 607 cm. What is the diameter of the circle?

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Answer:

the circumference is 30 cm,

Step-by-step explanation:

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2 years ago

2) Is V23 a rational or an<br> irrational number?

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Answer:Irrational

Step-by-step explanation: There is not a number you can square to get 23. The answer would be a repeating number, being irrational.

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3 years ago

For a company picnic, Nick ordered a box of fresh-baked gingerbread cookies and sugar cookies. The box included a total of 36 co

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Answer: 9

Step-by-step explanation:

36 ÷ 4 = 9

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3 years ago

The population of a city decreases by 4.6% per year. If this year's population is

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3 years ago

Find a ·<br> b. |a| = 80, |b| = 50, the angle between a and b is 3π/4.

mart [117]

Answer:

$a\cdot b=-2000\sqrt{2}$

Step-by-step explanation:

Given information: |a| = 80, |b| = 50, the angle between a and b is 3π/4.

We need to find the dot product a · b.

The formula of dot product is

$a\cdot b=|a||b|\cos \theta$

where, θ is the angle between a and b.

Substitute the given values in the above formula.

$a\cdot b=(80)(50)\cos (\frac{3\pi}{4})$

$a\cdot b=4000\cos (\pi-\frac{\pi}{4})$

$a\cdot b=-4000\cos (\frac{\pi}{4})$ $[\because \cos (\pi-\theta)=-\cos \theta]$

$a\cdot b=-4000\frac{1}{\sqrt{2}}$

$a\cdot b=-\frac{4000}{\sqrt{2}}$

Rationalize the above equation.

$a\cdot b=-\frac{4000}{\sqrt{2}}\times \frac{\sqrt{2}}{\sqrt{2}}$

$a\cdot b=-\frac{4000\sqrt{2}}{2}$

$a\cdot b=-2000\sqrt{2}$

Therefore, the value of a · b is $a\cdot b=-2000\sqrt{2}$ .

7 0

3 years ago

Read 2 more answers