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Paraphin [41]
3 years ago
12

Please help !!!!!!!! Will mark brainliest !!!!!!!!!!!!!

Mathematics
1 answer:
inn [45]3 years ago
8 0

Answer:

x=9 or x=-3

Step-by-step explanation:

add one to both sides

take square root of both sides

since (x+3)= + or -6, the add 3 to both sides and subtract 3 to both sides does not matter

I don't think there should be a subtract one from both sides step, but i'm not sure

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How can you tell if something is a function or not a function
Snezhnost [94]
<span>This characteristic of non-functions was noticed by I-don't-know-who, and was codified in "The Vertical Line Test": Given the graph of a relation, if you can draw a vertical line that crosses the graph in more than one place, then the relation is not a function.</span>
7 0
3 years ago
Read 2 more answers
The half-life of a certain material is 0.004 second. Approximately how much of a 20-gram sample will be left after 0.016 second?
emmainna [20.7K]

Answer:

D. 1.25 grams

Step-by-step explanation:

Half-life is: 0.004 sec

Time spent : 0.016 sec

Quantity = 20 gram

In order to find the material after 0.016 sec, we have to calculate how many number of half-lives have been passed

No. of half-lives passed = 0.016/0.004

= 4

The number of lives passed will be raised to the power of 0.5.

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The answer will be multiplied with the quantity we started with.

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Hence, Option D is correct ..

4 0
3 years ago
(vii) log32 8=m<br> Again please
KonstantinChe [14]

Answer:

log_(32)8= 3/5

Step-by-step explanation:

Log_(32)8 = m

write is as

32^m=8

(2^5)^m = 2^3

2^5m = 2^3

Since the bases are the same, then two expressions are only equal if the exponents are also equal.

5m = 3

divide 5 on both sides to remove it from m

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Hope this helps!

3 0
3 years ago
Can someone help me with this question?
KonstantinChe [14]
-3. Put the two equation equal to each other and solve. 
4x+18=2x+12
-2x=-2x 
2x+18=12 
-18=-18 
2x=-6 
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x=-3
8 0
3 years ago
Determine the value of a so that A = 2i+aj+k and B = 4i-2j-2k are perpendicular​
Digiron [165]
In order to make them perpendicular, their dot product must result in zero. so:

4 \times 2 - 2a - 2 \times 1 = 0

2a = 8 - 2 = 6

a = 3
7 0
3 years ago
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