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Xelga [282]
3 years ago
12

Represent the following expressions as a power of the number (a≠0):

Mathematics
1 answer:
Vsevolod [243]3 years ago
3 0
The answer should be a^7
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Find the area of the shape shown below.
spin [16.1K]

Answer:

8

Step-by-step explanation:

We can get area of square by doing 2*2

4

We can add the two triangles together and form a square. To find area, we can do the same as above. 2*2=4

We add both together

4+4

8

6 0
2 years ago
30 POINTS!!
Viefleur [7K]

Answer:

400

Step-by-step explanation:

He makes $4 per shirt ($12-$8).   $1600/4 = 400.  So he woud need to see at least 400 shirts to break even.

6 0
2 years ago
If the square of twice a number is 81, what is the number? I tried doing 2x^2=81 but that did not come out to the answer 4.5,-4.
Vlada [557]
If the number is n then

square of 2 times a number
square of 2n
(2n)²
that was your mistake, because (2n)²=4n², not 2n²

the result is 81
(2n)²=81
square root both sides
remember positive and negative roots
2n=+/-9
divide by 2
n=+/-4.5

n=4.5 or -4.5
4 0
3 years ago
Urgent:
rjkz [21]

Step-by-step explanation:

<h3>Given:</h3>
  • CM ⊥ AB
  • ∠3 = ∠4
<h3>To prove: </h3>
  • △AMC ≅ △BMC
<h3>Solution:</h3>
  • ∠ACM≅∠BCM - given

<u>CM⊥AB - given, therefore</u>

  • ∠AMC = 90° and ∠BMC = 90°

<u>Then</u>

  • ∠AMC ≅ ∠BMC
  • Side CM is common, therefore is congruent to itself

<u>So we have congruent two angles and a side between them on triangles AMC and BMC:</u>

  • △AMC ≅ △BMC as per ASA congruency theorem
5 0
3 years ago
At a construction job for a house there are 16 painters. Of these painters, 4 of them are painting the
Nikolay [14]

For this case, we have the total of painters is 16, so to determine what percentage is painting the interior of the house, we make a rule of three:

16 ---------------> 100%

4 -----------------> x

Where "x" represents the% of painters who paint the interior of the house.

x = \frac {4 * 100} {16}\\x = 25

Thus, 25% of painters are painting the interior of the house.

Answer:

25%

8 0
3 years ago
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