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lisabon 2012 [21]
3 years ago
9

Sara bought a dress on sale for $30. She saved 45%. What was the original cost?

Mathematics
2 answers:
Studentka2010 [4]3 years ago
6 0
The original cost of the dress is $55
Arte-miy333 [17]3 years ago
5 0

Answer:

$43.50 i think

Step-by-step explanation:

30+45%=$43.50

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Jackson hikes 220.2 meters up a mountain. If he is 60% of the way up, how tall is the mountain? 132.12 meters
Ber [7]

Answer:

367meters

Step-by-step explanation:

220.2 = 0.6 * h

220.2/0.6 = 0.6 * h / 0.6

367 = h

367 meters

7 0
3 years ago
Consider the formula for the average velocity, v, of a moving particle. In the formula, d, and dy represent the distance travele
il63 [147K]

Answer:

Option C.

Step-by-step explanation:

Note: The question and options are  not in correct form.

Let the correct question is "Consider the formula for the average velocity, v, of a moving particle. In the formula, d1 and d2 represent the distance traveled by the particle at times t1 and t2 respectively.

v = (d2 - d1)/(t2 - t1)  

Which of the following equations is equivalent to the formula for velocity?

A. t1=v(d2-d1)-t2

B. d1=v (t2-t1)-d2

C. d2=v(t2-t1)+d1

D. t2=v(d2-d1)+t1 "

The given formula is  

v=\dfrac{d_2-d_1}{t_2-t_1}

On cross multiplication, we get

v(t_2-t_1)=d_2-d_1

Add d_1 on both sides.

v(t_2-t_1)+d_1=d_2-d_1+d_1

v(t_2-t_1)+d_1=d_2

Since, d_2=v(t_2-t_1)+d_1, therefore, the correct option is C.

5 0
3 years ago
Help on 13-15 please.
elena55 [62]
13).
(600 ft / 5 min) x (1min / 60sec)

= (600 · 1 / 5 · 60) (ft · min / min · sec)

= 2 ft/sec
______________________________

14).
(120 yd / 2 min) x (3ft / 1yd) x (1min /60 sec)

= (120 · 3 · 1 / 2 · 1 · 60) (yd · ft · min / min · yd · sec)

= 3 ft/sec
__________________________________

15).
(60 mile /1 hour) x (5,280ft / 1mile) x (1hr / 3,600sec)

= (60 · 5,280 · 1 / 1 · 1 · 3,600) (mile · ft · hour / hour · mile · sec)

= 88 ft/sec . 

4 0
3 years ago
Please answer my other question i need help.
Eduardwww [97]

Answer: Ok

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
2. Two angles have a common vertex but no common side. How can you tell whether the angles are vertical angles?
Maksim231197 [3]

Explanation:

The angles are <em>vertical angles</em> if the opposites of the rays forming one of the angles are the rays forming the other angle.

More formally, if V is the common vertex, and ...

  • R is a point on one of the rays forming Angle 1
  • S is a point on the ray that is the opposite of ray VR
  • T is a point on the other ray forming Angle 1
  • U is a point on the ray that is the opposite of ray VT

Then angle RVT and angle SVU are vertical angles.

___

Another way to say this is that points R, V, S are collinear, as are points T, V, U, and the two angles of interest are RVT and SVU.

If the above conditions cannot be met, then the angles are not vertical angles.

7 0
4 years ago
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