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butalik [34]
3 years ago
11

An item on sale costs 70% of the original price. If the original price was $30, what is the sale price​

Mathematics
2 answers:
luda_lava [24]3 years ago
6 0

Answer:

$21

Step-by-step explanation:

70%=0.7

30*0.7=21

sweet-ann [11.9K]3 years ago
3 0

Answer:

$9.00

Step-by-step explanation:

Subtract 70 percent from 30 dollars

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A bus makes a stop at 2:30, letting off 13 people and letting on 5. The bus makes another stop ten minutes later to let off 4 mo
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Answer:14

Step-by-step explanation:

13+5-4=14 No 1 more person got on.

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How many degrees has ABC been rotated counterclockwise about the<br> origin?
omeli [17]

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C

Step-by-step explanation:

It would take 90 degree to rotate clockwise so it will take 360-90=270 degree to rotate counterclockwise

3 0
3 years ago
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The profile of the cables on a suspension bridge may be modeled by a parabola. The central span of a bridge is 1270 ft long and
deff fn [24]

Answer:

Step-by-step explanation:

Given

span of bridge L=1270\ ft

height of span h=157\ ft

Equation of Parabola

y=0.00039x^2

|x| i.e.

-635

\frac{dy}{dx}=2\times 0.00039

length of Arc=\int_{a}^{b}\sqrt{1+(\frac{dy}{dx})^2}

=\int_{-635}^{635}\sqrt{1+(\frac{dy}{dx})^2}

=\int_{-635}^{635}\sqrt{1+(0.00078x)^2}

=2\times \int_{0}^{635}\sqrt{1+(0.00078x)^2}

=2\times (660.08)

=1320.16\ ft

4 0
3 years ago
Which math property is used in the expression below?
worty [1.4K]

Answer:

Distributive

Step-by-step explanation:

3 0
2 years ago
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One and one over seventh times three fifths
andreyandreev [35.5K]

Answer:

24/35

Step-by-step explanation:

1) Convert your mixed number (1 and 1/7) to an improper fraction by multiplying your whole number (1) and your denominator (7) which gives you 7. Then add your numerator (1) to that which gets you 8. Then take the original denominator (7) and turn it into improper where your new numerator is 8 and your denominator stays 7. (If that doesn't make much sense then you can look up how to change mixed numbers into improper fractions.)

2) Multiply your numbers straight across.

8/7 * 3/5

8*3= 24

7*5= 35

24/35  you can't simplify this, so 24/35 is your answer

8 0
3 years ago
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