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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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Write 5.19 x 10^2 in standard form.
SVEN [57.7K]

Answer:

519

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8 0
3 years ago
Jasmine bought 1.3 pounds of ham and 0.8 pounds of cheese from the deli and paid $11.28. She went back the following week and bo
LuckyWell [14K]
Let

x
be the price for a pound of ham
y the price for a pound of cheese

<span>1.3x +0.8y = 11.28  ....(1)
1.5x +1.2y = 14.76  ....(2)

Lets multiply (1) by -1.2
Lets multiply (2) by 0.8

-1.56x -0.96y = -13.536 .....(3)
</span> 1.2x + 0.96y = 11.808 .....(4)


If we add (3) and (4)

-0.36x = -1.728 ............> x = 4.8

We substitute in (1)

1.3(4.8) +0.8y = 11.28

y = 6.3

Price per pound of ham = x = 4.8
Price per pound of cheese = y = 6.3
5 0
4 years ago
Prime integers between 1and11​
Roman55 [17]

Answer:

1,3,5,7,11

Step-by-step explanation:

a prime numb er or integer is a number that can not be multiplied to get to other than x1 so for example the only thing you can do for 3 is 3x1 not anything else especially because you said integer

5 0
3 years ago
Lane is ten times Mel's age. if the difference in their age is 27, how old is Mel?
Digiron [165]

If one number is ten times the other one, then the big wide open space
between them with the wind blowing through it is the other nine times it.

The 27 years is 9 times Mel's age.

Mel is 27/9  =<em>  3 years old</em>.

Lane is (3 + 27)  =  30 years old.

Lane is  (30/3)  =  10 times Mel's age.
The difference is (30 - 3) = 27 years.

3 0
4 years ago
Find the 8th term for the sequence a(n)=6-1n
Advocard [28]

Answer:

-2

Step-by-step explanation:

8 0
3 years ago
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