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zavuch27 [327]
3 years ago
12

If m ∟n, solve for x. (x + 21) (3x + 9) giving brainliest

Mathematics
1 answer:
kotykmax [81]3 years ago
5 0

Answer:

x=15

Step-by-step explanation:

Add the two equations together because there is a 90 degree angle. You can add the two to get :

4x+30=90

-30 from both sides

4x=60

Divide by 4 on both sides to get your answer!

x=15

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Answer:

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Step-by-step explanation:

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How many lines of symmetry does this figure have
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List the sample space for rolling two dice and finding the sum of the numbers. How many 8's are there in the sample space? [Assu
Reptile [31]
Using the given assumption, there are 3.

The sample space for rolling two dice and finding the sum is:

2   3   4   5   6    7 
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4   5   6   7   8    9
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6   7   8   9   10  11
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From the sample space alone, there are 5.  However, since a 3 and a 5 is the same as a 5 and a 3, this means that 2, 6 is the same as 6, 2 as well; this takes 2 off of the 5, leaving us 3.
5 0
4 years ago
Amy has 3 children, and she is expecting another baby soon. Her first three children are girls. Is the sex of the fourth baby de
Masteriza [31]

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4 0
3 years ago
Read 2 more answers
The number of coins Jada will have on the eighth day, if Jada starts with one coin and the number of coins doubles every day. (S
Katyanochek1 [597]

Answer:

256 Coins

Step-by-step explanation:

On the first day, Jada starts with one coin, so all you have to do here is multiply it by 2.

Day 1: 2 coins

Day 2: 2 x 2 = 4 coins

Day 3: 4 x 2 = 8 coins

Day 4: 8 x 2 = 16 coins

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Day 7: 64 x 2 = 128 coins

Day 8: 128 x 2 = 256 coins

Hope this helps! Just message me if you have more questions or need more help! :)

8 0
3 years ago
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