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2 years ago

Answer both parts a and b for full credit. (If you know the answer, answer It. If you don't, don't answer.)

Mathematics

1 answer:

liraira [26]2 years ago

8 0

Answer:

A) The store charges $94.50 for the skis!

B) The final price is 150% of the original price!

Step-by-step explanation:

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A person on a moving sidewalk travels 6 feet in 3 seconds. The moving sidewalk has a length of 80 feet. How long will it take to

tekilochka [14]

Answer:

40.5 seconds

Step-by-step explanation:

5 0

1 year ago

Annie received a 10% raise last year. If her salary now is $60,000, what was her salary last year?

sergeinik [125]

$6,000 was her salary last year:))

4 0

2 years ago

Using the rules for special cases, what is the result of?

Arlecino [84]

Answer:

C) 4x^2 -8x +4[/tex]

Step-by-step explanation:

(-2x+2)^2

we apply (a+b)^2 formula

$(a+b)^2 = a^2 + 2ab +b^2$

a= -2x and b= 2

Replace 'a' with -2x and 'b' with 2

$(-2x+2)^2 = (-2x)^2 + 2(-2x)(2) +2^2$

(-2x)^2 is 4x^2

$(-2x+2)^2 = 4x^2 -8x +4$

option C is the answer

8 0

2 years ago

Read 2 more answers

How to use discounts in our daily life?

Evgen [1.6K]

Answer:

1.To calculate the discount, multiply the rate by the original price.

2.To calculate the sale price, subtract the discount from original price.

Hey mate hope its help you.....✨✨✨✨✨✨

8 0

3 years ago

Read 2 more answers

What is the area of the sector ?

worty [1.4K]

They forget to say "not to scale". I'm guessing this is trig because I don't see another way to do it.

Let's consider x=chord PQ first. By the Law of Cosines

$x^2 = 3^2 + 5^2 - 2(3)(5) \cos 81^\circ = 34 - 30\cos 81^\circ$

We have an isosceles triangle formed by two radii of 9 cm and x=PQ. By the Law of Cosines again,

$x^2 = 9^2 + 9^2 - 2(9)(9) \cos B$

$x^2 = 162 - 162 \cos B$

$\cos B = \dfrac{162 - x^2}{162} = 1 - \dfrac{x^2}{162}$

$\cos B = 1 - \dfrac{34 - 30\cos 81^\circ}{162}$

$B = \arccos \left(1 - \dfrac{34 - 30\cos 81^\circ }{162} \right)$

The area of the circle is the fraction given by the angle,

$A = \dfrac{B}{360^\circ} \pi r ^2$

$A \approx \dfrac{ \arccos \left(1 - \dfrac{34 - 30\cos 81^\circ}{162} \right) }{360} (3.142)9^2$

$A\approx 24.7474332960707$

Answer: 24.7 sq cm

8 0

2 years ago