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Snowcat [4.5K]
3 years ago
11

PLS NEED HELP!!!!!!!!!!!

Mathematics
2 answers:
maxonik [38]3 years ago
8 0

Answer: a=16+c

Step-by-step explanation:

if b= c+4 then we can substitute c+4 into the equation a=b+12 so a= (c+4)+12 simplified a= c+16

ivolga24 [154]3 years ago
5 0

Answer: Uhh

Step-by-step explanation:

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What's ∣x−2∣=∣4+x∣????
LuckyWell [14K]

Answer:

in the chapter 7 in class 9 Ex 7.3

one time -  and second time +

Step-by-step explanation:

x-2=4+x

1) x-2=-(4+x)

  x-2=-4-x

  x+x=-4+2

  2x=-2

  x=-2/2

  x=-1

2) x-2=4+x

   =0

7 0
3 years ago
What is the complete factorization of x2 + 4x − 45?
Zanzabum

Answer:

(x-5) (x+9)

Step-by-step explanation:

what multiplies to -45 but adds to positive 4?  -5 and 9. that's how you get (x-5) (x+9)

7 0
2 years ago
What is a description of Morokweng Crater, South Africa (Africa)
Cloud [144]

Answer:

The Morokweng crater  is an impact crater buried beneath the Kalahari Desert near the town of Morokweng in the Northwest Province of South Africa, close to the border with Botswana

Step-by-step explanation:

6 0
3 years ago
in a round robin tennis tournament involving 7 players, each player will play every other player twice. How many total matches w
baherus [9]
Total number of ways to make a pair:

The first player can be any one of 7 .  For each of those . . .
The opponent can be any one of the remaining 6 .

Total ways to make a pair  =  7 x 6 = 42 ways .

BUT ... every pair can be made in two ways ...  A vs B  or  B vs A .
So 42 'ways' make only (42/2) = 21 different pairs.

If every pair plays 2 matches, then  (21 x 2) = <em><u>42 total matches</u></em> will be played.


Now, is that an elegant solution or what !
8 0
3 years ago
66
likoan [24]

Answer: 230cm²

Step-by-step explanation:

>We can do this by splitting the figure into 2 trapeziums.

>Additionally, you can see that both trapeziums bear the same lengths a and b. Hence, we can use this formula: \frac{1}{2} * (a+b) * (total height).

>Thus,

Area = \frac{1}{2} *(7+16)*20=230

4 0
2 years ago
Read 2 more answers
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