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Licemer1 [7]
3 years ago
8

David wants to buy a CD that regularly cost $12. The CD is Advertised as 1/4 off the regular price. Before tax, what is the cost

of the CD?
Mathematics
2 answers:
Pani-rosa [81]3 years ago
6 0
The CD will have be £3 off so it would cost £9
aev [14]3 years ago
5 0
Hey You!

12/4 = 3

12 - 3 = 9

So, before tax, the CD costs $9, as 1/4 of 12 is 9.
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a chord of 12cm long of 8cm is away from the of the circle what is the lenght of the chord which is 6cm away from the centre
lana66690 [7]

Answer:

The length of the chord is 16 cm

Step-by-step explanation:

Mathematically, a line from the center of the circle to a chord divides the chord into 2 equal portions

From the first part of the question, we can get the radius of the circle

The radius form the hypotenuse, the two-portions of the chord (12/2 = 6 cm) and the distance from the center to the chord forms the other side of the triangle

Thus, by Pythagoras’ theorem; the square of the hypotenuse equals the sum of the squares of the two other sides

Thus,

r^2 = 8^2 + 6^2

r^2= 64 + 36

r^2 = 100

r = 10 cm

Now, we want to get a chord length which is 6 cm away from the circle center

let the half-portion that forms the right triangle be c

Using Pythagoras’ theorem;

10^2 = 6^2 + c^2

c^2 = 100-36

c^2 = 64

c = 8

The full

length of the chord is 2 * 8 = 16 cm

5 0
3 years ago
The football team is raising money to have a new turf field installed the cost of the turf field is 48780 the team has 18 months
Stells [14]
I think the answer is 876744
5 0
3 years ago
Please help I will be very grateful for this
mixer [17]

Answer:

____________

the answer is B

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explanation

Factor out the greatest common factor from each group.

Group the first two terms and the last two terms.

(x^2 - 2x) - 3xy + 6y

Factor out the greatest common factor (GCF) from each group.

x(x - 2) - 3y (x - 2)

Factor the polynomial by factoring out the greatest common factor, x - 2

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5 0
3 years ago
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Which statement is true about polynomial 5s^6t^2 + 6st^9 - 8s^6t^2 - 6t^7 after it has been fully simplified?
Marina86 [1]

Answer:  3t²(2st⁷ - s⁶ - 2t⁵)

<u>Step-by-step explanation:</u>

5s⁶t² + 6st⁹ - 8s⁶t² - 6t⁷     <em>5s⁶t² and - 8s⁶t² are like terms which = -3s⁶t² when combined</em>

=          6st⁹ - 3s⁶t² - 6t⁷      <em>next, factor out the GCF of 3t²</em>

=      3t²(2st⁷ - s⁶ - 2t⁵)

5 0
3 years ago
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If a line segment is perpendicular to another line segment, it is the bisector of that line segment.
sp2606 [1]

False. Perpendicular lines run beside each other not through each other.

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