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2 years ago

The watch at Macys is $400. The store is having a sale and everything is 30% off. What is the discount amount?

Mathematics

2 answers:

sesenic [268]2 years ago

8 0

Answer:

The discount is $120, so the discount price would be $280

Step-by-step explanation:

(30 x 400) / 100 = 120 (Discount Ammount)

400-120=280 (Discount Price)

sweet-ann [11.9K]2 years ago

3 0

The answer would be $280.00 and that’s just simple as that :)

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Find the center and the radius of the circle with the equation: x2+6x+y2+4y+12=0

Andrews [41]

Answer:

centre = (- 3, - 2) , radius = 1

Step-by-step explanation:

The equation of a circle in standard form is

(x - h)² + (y - k)² = r²

where (h, k) are the coordinates of the centre and r is the radius

Given

x² + 6x + y² + 4y + 12 = 0 ( subtract 12 from both sides )

x² + 6x + y² + 4y = - 12

Use the method of completing the square on the x and y terms

add ( half the coefficient of the x/ y terms )² to both sides

x² + 2(3)x + 9 + y² + 2(2)y + 4 = - 12 + 9 + 4

(x + 3)² + (y + 2)² = 1 ← in standard form

with centre = (- (- 3), - (- 2)) and r² = 1, that is

centre = (- 3, - 2) and radius = 1

8 0

2 years ago

Kara bought two birthday gifts for her twin nephews. Each gift cost $12.50. Sales tax was 6.75%. What was the total cost for the

Katyanochek1 [597]

Answer:

Step-by-step explanation:

two birthday gifts n each costs $12.50 so 12.50x2 = $25

sales tax was 6.75% on $25 = 25x6.75/100 = $1.69

total cost including tax = 25+1.69 = $26.69

6 0

3 years ago

Read 2 more answers

Simplify the expression 3(y-5)+2y

miv72 [106K]

Answer:

5 − 15

Step-by-step explanation: Distribute: 3(−5)+ 2 , 3 − 15 + 2

Combine the like terms: 3 − 15 + 2 5 − 15

hope that helped

8 0

2 years ago

Write an equivalent expression for each of the following

Anna11 [10]

1) 6x
2) 2x + 4
3) 5y + 11

hope this helps!

6 0

3 years ago

Find the perimeter of the object Help step by step please!

aliina [53]

Answer:

29.42 units

Step-by-step explanation:

1) Find the perimeter around the semi-circle

To do this, we find the circumference of the circle using the given diameter:

$C=\pi d$ where d is the diameter

Plug in 6 as the diameter

$C=\pi (6)\\C=6\pi$

Divide the circumference by 2

$\frac{6\pi }{2} \\= 3\pi$

Therefore, the perimeter around the semi-circle is 3π units.

2) Find the perimeter around the rest of the shape

Although it's impossible to determine the lengths of the varied sides on the right side of the shape, we know that all of those vertical sides facing the right add up to 6. We also know that all of those horizontal sides facing up add up to 7. Please refer to the attached images.

Therefore, we add the following:

7+6+7

= 20

Therefore, the perimeter around that area of the shape is 20 units.

3) Add the perimeter around the semi-circle and the perimeter around the rest of the shape

$20+3\pi \\= 20+9.42\\= 29.42$

Therefore, the perimeter of the shape is approximately 29.42 units.

I hope this helps!

3 0

2 years ago