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Sever21 [200]
2 years ago
13

The price of a wrist watch has decreased from $50 to $30.What is the percentage decrease in the price of the wrist watch

Mathematics
1 answer:
Anit [1.1K]2 years ago
4 0

Answer:

It is 40% off!

Step-by-step explanation:

Since 50 x 2 is 100, you only have to double both numbers.

100 decreased to 60 is subtracting 40. It is 40% off!

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If x is equal to -6 which equality is true​
Papessa [141]

Answer:

-5 - 3x > 10

Step-by-step explanation:

x = -6

Plug in the x value for each inequality:

-5 - 3(-6) > 10

-5 + 18 > 10

13 > 10

True

-3 - 5(-6) < -14

-3 + 30 < -14

27 < -14

False

1 - 2(-6) > 13

1 + 12 > 13

13 > 13

False

2 - (-6) < -3

2 + 6 < -3

8 < -3

False

Only one of these is true; that is the answer.

8 0
3 years ago
What is the center and radius of -10x = -121 - y2 - x2 -22y
OlgaM077 [116]

We need to find the center and the radius of

-10x\: =\: -121\: -\: y^2\: -\: x^2\: -22y

The general circle equation is the following

(x-h)^2+(y-k)^2=r^2

where

(h,k) is the center and

r is the radius

1. rearrange the equation

(x^2-10x)+(y^2+22y+121)=0

2. Add 25 on both sides

(x^2-10x+25)+(y^2+22y+121)=25

3. Factor

(x-5)^2+(y+11)^2=5^2

Now we have an equation that is very similar to the circle equation, so let's compare them

Center -> (h,k) = (5,-11)

radius -> r = 5

8 0
1 year ago
A pool was filled with 8.2 times 10 Superscript 3 gallons from one hose and 9.4 times 10 Superscript 3 gallons from another hose
prisoha [69]

Answer:

1.76 x 10⁴ gallons

Step-by-step explanation:

8.2 x 10³ + 9.4 x 10³ = 17.6 x 10³

Although correct 17.6 x 10³ is not in scientific notation

which is

1.76 x 10⁴ gallons

5 0
3 years ago
Gina ate 3/4 of an apple pie. greg ate 1/8 of the same pie. how much of the Apple pie was left?
miskamm [114]
There would be 1/8 of the pie left,
you have to add 3/4 and 1/8 to find the total eaten and then subtract it by 8/8 (the total) which would give you your answer.

Hope it helps
5 0
3 years ago
a textbook sold a combined total of 391 psychology and biology books in a week. the number of biology books sold was 71 less tha
Hunter-Best [27]

Answer:

320

Step-by-step explanation:

I think you have to subtract the number and I think it will be 320

7 0
3 years ago
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