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Vladimir79 [104]
3 years ago
15

Devaunte goes to Barnes and Noble to buy a book that is originally $14.50. Devaunte was trying to save money, so he made sure to

bring a coupon that gives him 20% off of his book.
Mathematics
2 answers:
adoni [48]3 years ago
7 0

the answer I think is he saved $2.9

slavikrds [6]3 years ago
3 0

Answer:

$2.9

Step-by-step explanation:

The Expression is:

14.5 − 0.8(14.5)

The Answer is:

$2.9

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Rationalise the denominator by 6 root 7 minus 1
nikklg [1K]

Answer:

Assuming the numerator was 1.

(6\sqrt{7}+1)/251

Step-by-step explanation:

Assuming the numerator was 1.

1/(6\sqrt{7} -1)\\ (6\sqrt{7}+1)/((6\sqrt{7} - 1)(6\sqrt{7} + 1))\\ (6\sqrt{7}+1)/((6\sqrt{7})^2 + 6\sqrt{7} - 7\sqrt{7} - 1)\\(6\sqrt{7}+1)/((6\sqrt{7})^2 - 1)\\(6\sqrt{7}+1)/((36*7 - 1)\\(6\sqrt{7}+1)/251

7 0
3 years ago
The ratio between diameter and dircumference of circle is ......................​
marysya [2.9K]

Answer:

The ratio of the circumference of a circle to its diameter and is called π (Pi).

Step-by-step explanation:

7 0
2 years ago
PLEASE HELP ASAP!!! (ii only)
mixer [17]
The equation of the tangent line can be found using slope formula and fact that slope = dy/dx.

\frac{dy}{dx} = \frac{y - y_0}{x - x_0}

where (x0,y0) is point A ---> (0,-1)

Then rearrange equation into slope-intercept form:
y = \frac{dy}{dx}(x - 0) -1

Finally sub in x=0 into dy/dx to get slope at the point (0,-1)

y = 3x -1
6 0
3 years ago
Michele correctly solved a quadratic equation using the quadratic formula as shown below.
ra1l [238]
Whats the answers it doesn’t show for me
8 0
3 years ago
the price of a cup of coffee has dropped to $2.20 today. Yesterday's price was $2.35. Find the percentage decrease. Round your a
notka56 [123]

Answer:

6.4%

Step-by-step explanation:

percentage decrease= decrease/actually amount×100

2.35-2.20/2.35×100

0.15/2.35×100

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Percentage decrease=6.4%

6 0
2 years ago
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