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tresset_1 [31]
4 years ago
8

Evaluate A² for A = -3

Mathematics
2 answers:
GaryK [48]4 years ago
8 0

Answer:

9

Step-by-step explanation:

(A)^2 is a better way to write it. That way the answer is unambiguous (-3)^2 = -3 * - 3 = 9

That is the answer.

frutty [35]4 years ago
7 0

Answer:

9

Step-by-step explanation:

If A = - 3, than A^2 is equal to (-3)^2

If a number is squared (to power of 2), it is multiplied by itself (there are two of that number being multiplied together) so it is - 3x-3

-3 x - 3 = 9,

Because 3x3 =9 and a negative multiplied by a negative makes a positive.

Hope this helped!

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The price of a tablet was reduced from $70 to $56. By what percentage was the price of the tablet reduced?
Komok [63]

Answer:

20%

Step-by-step explanation:

70-56=14     14/70=0.2 or 20%

8 0
3 years ago
Please show work and thank youuu
Papessa [141]

Answer:

<u>x = 8√2</u>

Step-by-step explanation:

As the opposing side of the angle and the hypotenuse are given, take the sine ratio of the angle.

  • sin 45° = x/16
  • 1/√2 = x/16
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8 0
2 years ago
Read 2 more answers
I need help with number 35.
Sergio039 [100]

Since ED and DB are exactly half of EB, we can set ED and DB equal to each other.

x + 4 = 3x - 8

Subtract x from both sides. Add 8 to both sides

12 = 2x

Divide both sides by 2

6 = x

ED = 6 + 4 = 10

ED = DB = 10

EB = ED +DB = 10 + 10 = 20

ED = 10

DB = 10

EB = 20

6 0
3 years ago
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Vanyuwa [196]

Answer:

whattttt

Step-by-step explanation:

6 0
3 years ago
there are 118 boys and 121 girls signed up for a volleyball league. The coaches first make teams of 9 players and then assign an
andrew11 [14]

The number of nine-players team= 21 teams.

The number of ten-players team= 5 teams.

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

<u>step 1:</u> The total players signed up for a volleyball league= 118 boys+121 girls= 239 players.

<u>step 2:</u> The coach first makes a 9 players team= 239-9= 230 members

In this stage, the number of 9 players-team is one.

<u>step 3:</u> The remaining 230 players cannot be divided equally into 9 players, since 230 is not divisible by 9.

<u>step 4:</u> Find the number within 230 that is divisible by 9 as a whole. Check for easy number (9*20= 180 is within 230)

Therefore, 230-180= 50 players are remaining.

In this stage, the number of 9 players-team= 1+20= 21 teams with 9-players.

The number of 10 players-team= 50 players/10= 5 teams with 10-players.

8 0
4 years ago
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