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antiseptic1488 [7]
3 years ago
12

At a sale, dresses were sold for $140 each. If the dresses originally cost $200 each,

Mathematics
1 answer:
Jet001 [13]3 years ago
5 0

Answer:

30%

Step-by-step explanation:

140 is 70% of 200 which means that the dresses were on sale by 30%

140/200 =

140 ÷ 200 =  

0.7 =

0.7 × 100/100 =

0.7 × 100% =

(0.7 × 100)% =

70%;

Then subtract from 100% to get 30%

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A third grade teacher has 20 students in her class. Fifteen of the students are girls and five are boys. What is the ratio of gi
svetoff [14.1K]

Answer:

15 : 5 = 3 : 1

Step-by-step explanation:

8 0
2 years ago
⚠️ Show work for points ⚠️
Nikitich [7]

Answer:

D

Step-by-step explanation:

A is not, because 2-5x = -5x+2

(nothing has changed but the order)

B is not, because 3-5+2x = 2x-2

because 3-5 = -2. so -2+2x can be rewritten as 2x-2.

C is not, because 5x-2x = 3x

because you combine like terms, and 5-2 is 3

D <em>i</em><em>s</em><em>,</em> because 2x-2+3x = 5x-2

because you combine like terms (2x+3x=5x) and -2 is left.

4 0
3 years ago
The temperature at a point (x, y) is T(x, y), measured in degrees Celsius. A bug crawls so that its position after t seconds is
aniked [119]

Answer:

10.50°C

Step-by-step explanation:

Given x = 2 + t , y = 1 + 1/2t where x and y are measured in centimeters. Also, the temperature function satisfies Tx(2, 2) = 9 and Ty(2, 2) = 3

The rate of change in temperature of the bug path can be expressed using the composite formula:

dT/dt = Tx(dx/dt) + Ty(dy/dt)

If x = 2+t; dx/dt = 1

If y = 1+12t; dy/dt = 1/2

Substituting the parameters gotten into dT/dt we will have;

dT/dt = 9(1)+3(1/2)

dT/dt = 9+1.5

dT/dt = 10.50°C/s

Hence the rate at which the temperature is rising along the bug's path is 10.50°C/s

7 0
3 years ago
Solve the equation 2x^2 + 4x - 39 to the nearest tenth.
Virty [35]

Answer:

cant be solved, when you try to you get

-1+78 = 77

which is

77 = 77

1=1

So cannot be factored

Step-by-step explanation:

8 0
2 years ago
Need help asap please
Lelechka [254]

Answer:

\displaystyle yes

Step-by-step explanation:

If the <em>angle of elevation</em> is congruent in both triangles, then both smaller legs are congruent.

I am joyous to assist you at any time.

4 0
3 years ago
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