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LenKa [72]
3 years ago
15

Johanna is online shopping for a dress she really wants. The original cost of the dress is $50. She saw that is was on sale for

$34. What is the percent for the dress Johanna wants to buy?
Mathematics
2 answers:
anzhelika [568]3 years ago
5 0
20% offfffff ya 20% off
Kitty [74]3 years ago
3 0

Answer:

20%

Step-by-step explanation:

I GOT THE POWER OF GOD AND ANIME ON MY SIDE

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Solve the formula s=4pi r^2 for r
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The formula to find the surface area of a sphere is to take the radius of the sphere and square it and multiply that amount by pi and then multiply that by 4. This is written algebraically as S=4πr2, where S is the surface area, r is the radius, and the value of π is 3.14.

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Please list the following formulas:
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y2 - y1
———
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6 0
3 years ago
Two angles of a triangle measure 78 and 24
Leviafan [203]

Answer: 78

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8 0
3 years ago
Two trains are 210 miles apart, and their speeds differ by 17 mph. Find the speed of each train if they are traveling toward eac
Marizza181 [45]
V1 - velocity first train
v2 - velocity second train
v2 > v1

v2 - v1 = 17 mph

We know, that: 
s_1+s_2=210 \ [miles] \\ \\ t_1=t_2=2h

So:

v_1=\dfrac{s_1}{t_1}=\dfrac{s_1}{2} \\ \\ v_2=\dfrac{s_2}{t_2}=\dfrac{s_2}{2} \\ \\ \\ v_1+v_2= \dfrac{s_1}{2}+\dfrac{s_2}{2} \\ \\ v_1+v_2= \dfrac{s_1+s_2}{2} \\ \\  v_1+v_2= \dfrac{210}{2}=105

NOw we've got simple system of equations:

+\begin{cases} v_2-v_1=17 \\ v_2+v_1=105\end{cases} \\ \\ 2v_2=122 \qquad /:2 \\ \\ v_2=61 \qquad [mph] \\ \\ v_2-v_1=17 \\ \\ 61-v_1=17 \\ \\ v_1=44

Velocities of these trains are  61mph  and 44mph

3 0
3 years ago
Read 2 more answers
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