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2 years ago

Languages Spoken in Australia

Mathematics

2 answers:

ZanzabumX [31]2 years ago

6 0

It should be B. like the other person said and i hope i'm right as well! :)

RideAnS [48]2 years ago

4 0

Answer Should be= B
Hope this helps.

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The patch of the blade has a circumference of about 12.5 inches. What is the radius of the model.

Gekata [30.6K]

C=2pi(r) 12.5=2pi(r) r= 12.5/(2pi) which is the exact answer. Approximately 1.989

4 0

2 years ago

X^2 + 4.7^2 = 13.4^2

tamaranim1 [39]

Answer:

$x = - \: 12.55 \: or \: x = 12.55$

Step-by-step explanation:

We want to solve for x in

${x}^{2} + 4.7^{2} = 13.4^{2}$

We group constants on the right to get:

${x}^{2} = 13.4^{2} - {4.7}^{2}$

We apply difference of two squares

${x}^{2} = (13.4 - {4.7})(13.4 + 4.7)$

${x}^{2} = 157.47$

$x = \pm \sqrt{157.47}$

$x = \pm \: 12.55$

5 0

3 years ago

Find the product mentally.

yaroslaw [1]

(ab+3)(ab−3)

=(ab+3)(ab+−3)

=(ab)(ab)+(ab)(−3)+(3)(ab)+(3)(−3)

=a^2b^2−3ab+3ab−9

=a^2b^2−9

8 0

3 years ago

Read 2 more answers

The number of players in a tennis tournament is reduced by half (50%) after every round. In round 1 there are 256 player, in rou

Aleks04 [339]

Answer:

$a_{n} = a_{1} (\frac{1}{2} )^{n - 1}$ where $a_{1} = 256$ .

The number of players compete in round 7 will be 4.

Step-by-step explanation:

The number of players in a tennis tournament is reduced by half (50%) after every round. In round 1 there are 256 players, in round 2 there are 128 players, and so on.

So, the number of players is multiplied by $\frac{1}{2}$ gives the number of players in the next round.

Therefore, the explicit function of number of players in nth round is given by

$a_{n} = a_{1} (\frac{1}{2} )^{n - 1}$ where $a_{1} = 256$ .

Therefore, the number of players compete in round 7 will be $a_{7} = 256 \times (\frac{1}{2} )^{(7 - 1)} = 4$ . (Answer)

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3 years ago

75 people to 25 people. What is the percent in change

igomit [66]

So it was 75 to 25 people. that would be decrease by 66.66666666 (forever) percent

5 0

3 years ago

Read 2 more answers