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emmainna [20.7K]
3 years ago
11

I need help please help this is do tomorrow

Mathematics
1 answer:
VikaD [51]3 years ago
6 0

Answer: A!

Step-by-step explanation:

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A square + b square + c square equal to ab+ba+ca show that <br><br>​
Evgen [1.6K]

Answer:

a² + b² + c² ≠ ab + bc + ca

<h3><u>PLEASE</u><u> MARK</u><u> ME</u><u> BRAINLIEST</u><u>.</u></h3>
5 0
3 years ago
The half life of radium is 1690 years. if 80 grams are present now, how much will be present in 830 years
Pachacha [2.7K]

Answer:

A(t) = amount remaining in t years

      = A0ekt, where A0 is the initial amount and k is a constant to                     be determined.  

Since A(1690) = (1/2)A0 and A0 = 80,

                we have 40 = 80e1690k

                1/2 = e1690k

                ln(1/2) = 1690k

                k = -0.0004

So, A(t) = 80e-0.0004t

Therefore, A(430) = 80e-0.0004(430)

                           = 80e-0.172

                           ≈ 67.4 g

Step-by-step explanation:

5 0
2 years ago
Whats the value of 4
pantera1 [17]

Answer:

Hence, the value of the digit 4 will be i.e. 40 or forty. Example 1: Work out the place value, face value and value of 6 in the number 56,523.22.

8 0
3 years ago
Can anyone help me i really need it rn<br>​
Hunter-Best [27]

<u>Answer:</u>

11.   g

12.  f

13.  e    (add all the frequencies)

14.  d

15.  c    (eg. 17.5 -8.5 = 9)

16.  b

17.  a

Let me know if you have any questions.

Hope this helps!

4 0
2 years ago
Solve for x. <br><br> (X+16) (4x-5)<br><br> X = 4.3<br> X = -7<br> X = 3<br> X = 7
jeka94

Answer:

the answer is x = 7

Step-by-step explanation:

1) replace the x with 7

2) 7 + 16 = 23

3) 4(7) = 28

4) 28 - 5 = 23

they're both equal as perpendicular angles should be!

7 0
4 years ago
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