A refrigerator is priced at $3,800 plus value-added tax at 15%. What amount does the refrigerator actually cost the customer?

Mathematics

1 answer:

Ksenya-84 [330]3 years ago

5 0

Answer: 3800 + 15% =.....DUN DUN DUNNNN 3.800.15

Step-by-step explanation:

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Plz help me solve this

Nady [450]

Answer:

c = 9.43 cm

Step-by-step explanation:

Here, we want to get the measure of the missing side

By the use of Pythagoras’ theorem, the square of the hypotenuse equals the sum of the squares of the two other sides

we have this as follows;

The side c represents the hypotenuse as it faces the hypotenuse

We have this as;

c^2 = 5^2 + 8^2

c^2 = 25 + 64

c^2 = 89

c = √89

c = 9.43 cm

4 0

3 years ago

Please teach me on how to answer this question. (addmath question)

arsen [322]

We know that $\overline{x}=8$ so:

$\overline{x}=8\\\\\\\dfrac{\sum\limits_{k=1}^7\,x_k}{7}=8\qquad|\cdot7\\\\\\ \boxed{\sum\limits_{k=1}^7\,x_k=56}$

We want to calculate:

$\sum\limits_{k=1}^7\,\big(2x_k-3\big)^2=\sum\limits_{k=1}^7\,\big(4x_k^2-12x_k+9\big)=\\\\\\=\sum\limits_{k=1}^7\,4x_k^2-\sum\limits_{k=1}^7\,\big12x_k+\sum\limits_{k=1}^7\,9=4\sum\limits_{k=1}^7\,x_k^2-12\sum\limits_{k=1}^7\,x_k+\sum\limits_{k=1}^7\,9=\\\\\\=4\cdot672-12\cdot56+7\cdot9=2688-672+63=\boxed{2079}$

5 0

3 years ago

What is the shaded area of the figure?

Marta_Voda [28]

Answer:

Step-by-step explanation:

The idea here is to find the area of the circle and then subtract from it the area of the triangle. That will give you the area of what's left in the circle (the shaded part). The area of a circle is:

$A_c=\pi r^2$ so