A mystery element has 18 protons. Which one of the following statements is true about the element?
Answers
Answer:
My guess would be B
Step-by-step explanation:
Helium, neon, argon, krypton, xenon, and radon are also noble gases, in order of density. These are termed noble gases as they're so magnificent that, in general, they do not react with something.
The number of valence electrons determines the number of elements in a set.The number of outer electrons decides the number of components in a period.The electrical configuration of both the element is 2,8,8.Their electron energy count is 8, indicating that it belongs to Group 8/O.Its electrons shell count is three, indicating it is in period (row) 3 Noble gases are elements in the Group 8/O family.Therefore, the answer is "Its chemical is categorized as a noble gas that belongs to row 3 of the periodic table".
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Related Questions
estimate each product :
1/9 x 83
Answers
Answer:
8.5
Step-by-step explanation:
1/9=0.1111111111111
0.1111111111111=0.1
83=80 or 85
0.1*85=8.5
Brainliest to right answer
Answers
Answer:
the answer is A)no solutions
30. What is the degree of the polynomial?
31. Which polynomial is in descending order in terms of x?
Picture attached
Answers
Answer:
Step-by-step explanation:
30). [tex]5^{th}[/tex] degree ( 4 + 1 = 5 ; 1 + 1 = 2 and 2 + 2 = 4 )
31) D) Choice D
10/16 reduced to the lowest term?
Answers
Function or not a function
-3 6
5 6
3 -2
-5 1
Answers
Answer: It is a function.
Step-by-step explanation:
A function is a relation between two sets that associates every element of the one set to exactly one element of the other set.
Given table : Input values Output values
-3 6
5 6
3 -2
-5 1
Here each input value value is related to exactly one out out value.
Hence, it is a function.
If you invest $2,000 now at an interest rate of 5% compounded quarterly, in 20 years the investment will be worth?
Answers
Answer:
it would be worth 80,000
Step-by-step explanation:
Think about Digit's game of spinning the spinner.
He wants to know the probability of the following events happening on two separate spins.
A: spinning praline wafer
B: spinning oven-baked apple & lavender calzone
Which formula should Digit use to find the probability?
P(A∩B)=P(A)⋅P(B|A)
P(A∪B)=P(A)+P(B)
P(A∪B)=P(A)+P(B)−P(A∩B)
P(A∩B)=P(A)⋅P(B)
Answers
Answer:
Should be P(A∩B)=P(A)⋅P(B)
solve for h h and 26 is −52
Answers
Answer:
If you mean h multiplied by 26 is -52 then h is -2
If it is added to 26 then h is -78
If it is subtracted then h is -26
Step-by-step explanation:
Louis age is three years more than twice the age of Sánchez . The sun of their ages is 39. How old are Sánchez and Louis ?
Answers
Answer:
Sanchez- 42
Louis- 40
Step-by-step explanation:
hope this helps
A bike costs $520. You have a coupon for 25% off.
Find the discount amount and sale price.
Answers
Answer:
Discount: $130
Sale price: $390
Step-by-step explanation:
Discount: 0.25 * $520 = $130
Sale price:
bike cost - discount = sale price
$520 - $130 = $390
2 with the exponent of 2 ⋅(45÷9) - 3
i need the answer
Answers
math...............math
Answers
Answer:
Frrr its always math -_-
Step-by-step explanation:
Answer:
11.56
25
25
Step-by-step explanation:
Complete the statement for triangle HJK with medians (HN), (JL), and (KM), and centroid P. PN = ____ HN *
1 point
1/2
2
1/3
2/3
Answers
Answer:
Step-by-step explanation:
PN = [tex]\frac{1}{3}[/tex] HN
answer this please i appreciate it
Answers
Answer:
oh I know the answer its r=27
Step-by-step explanation:
I know that it is 27 because 16+24=65 and 65+27 is 180
The Virginia Resolution was written by John Adams. Aaron Burr. Thomas Jefferson. James Madison.
Answers
Answer:
D.
Step-by-step explanation:
Did the test
Answer:
Jame´s Madison.
Step-by-step explanation:
2 4/5 ___ 2.45
(>,<,=)
Answers
Answer:
2 and 4/5 > 2.45
Step-by-step explanation:
2.8 is greater than 2.45
Answer:
2 4/5 is equal to 2.8 so 2 4/5 > 2.45
Step-by-step explanation:
WRITE THE POINT -SLOPE FORM OF THE EQUATION OF THE LINE THAT PASSES THROUGH THE POINTS (5,9) AND (-6,10)
Answers
Answer:
y-5 = -3(x-9)
Step-by-step explanation:
(9--6)/ (5-10)
(9+6)/ (5-10)
15/-5
-15/5
Slope = -3
y-y1 = m(x - x1)
y-5 = -3(x - 9)
Which of the following is the least expensive cereal per ounce 13oz for 2.59 11.4 oz for 3.69 12oz for 3.99 20 oz for 5.99
Answers
Answer:
13 oz for 2.59 (im pretty sure)
Step-by-step explanation:
13 divided by 2.59 means every 5.01393 ounce it costs 1$. and from there you just find how many ounces compared to dollars.
Plot the x- and y- intercepts to graph the equation.
y= -1/2x - 3
Answers
Step-by-step explanation:
work is shown and pictured
six less than a number a 7 times a number is 85
Answers
Answer:
7x-6=85
Step-by-step explanation:
7×number for example x
then subtract 6 from that
then you have 85
Answer:
Step-by-step explanation:h
There are 13 left-handed and 21 right-handed spirals on the cacti in the photograph. What is special about these numbers?
A. The value of the 13th term of the pyramidal sequence is 21.
B. They are consecutive terms in the pyramidal sequence.
C. The value of the 13th term of the Fibonacci sequence is 21.
D. They are consecutive terms in the Fibonacci sequence.
THE CORRECT ANSWER IS D!
Answers
Dave ran from one corner of a field to the opposite corner , a distance of 100 meters . Then he ran along its length, a distance of 96 meters . How wide is the field
Answers
Answer:
28 meters wide
Step-by-step explanation:
This involves using the Pythagorean Theorem.
We know: a (the length)=96, b (the width)=?, c (diagonal distance)=100
a^2+b^2=c^2
96^2+b^2=100^2
9216+b^2=10000
b^2=784
b=28
The field is 28 meters wide
Which of the following statements is true of the system below?
-2x-3y=-1
3x+6y=0
A. The solution to this system is (3,-2).
B. The solution to this system is (2,-1).
C. This system has no solutions.
D. This system has infinitely many solutions.
Answers
Answer:
y=mx+b 57+cb
Step-by-step explanation:
Answer:
b. the solution to this system is (2,-1)
Step-by-step explanation:
if Brian is 24 years old and his sister is 16 years old. how old is Brian to his sister.
and if Brian's mother is 56 years old how is his mother to his sister. if
Brian's mother is 56 how old is his mother to his sister.
if their father is 63 how old is he to the mother Brian's mother and Brian.
is the mother related to the sister. how old is the sister to the mother and the father. band uncle is 84 how old is he to Brian's mother sister father and to himself. last question how old is other ages add together. who is the oldest
Answers
Answer:
1. 3:2
2. 7:2
3. 63:56:24
4. 16:56:63
5. 84:56:16:63
the ages added up is 219
the uncle is the oldest
Step-by-step explanation:
I'm answering by ratios because I'm not exactly sure what you mean.
24:16 = 6:4 = 3:2
56:16 = 7:2
63:56:24 is already in its simplest form I think??
16:56:63 also in its simplest form
84:56:16:63
the ages added up is 219
the uncle is the oldest
Multiply.
−2 1/4X(−2 1/3)
−5 1/4
−41 1/2
41 1/2
5 1/4
Answers
The result of [tex]\tt{} - 2 \frac{1}{4} \times ( - 2 \frac{1}{3} )[/tex] is [tex]\tt{}5 \frac{1 }{4} [/tex]
preliminaryPecahan dalam matematika adalah bilangan rasional yang dapat ditulis dalam bentuk [tex]\tt{}\frac{x}{y}[/tex] (dibaca x per y), dengan bentuk dimana x dan y merupakan bilangan bulat, y tidak sama dengan 0, dan bilangan x bukan kelipatan bilangan y.
Explanation[tex]\tt{}- 2 \frac{1}{4} \times ( - 2\frac{1}{3} )[/tex]
[tex]\tt{} - \frac{9}{4} \times ( - \frac{7}{3} )[/tex]
[tex]\tt{}\frac{3}{4} \times 7[/tex]
[tex]\tt{}\frac{3 \times 7}{4} [/tex]
[tex]\tt{} \frac{31}{4} [/tex]
[tex]\tt{}5 \frac{1}{4} [/tex]
What is the extraneous root of this problem?
Answers
Answer:
a: -6
Step-by-step explanation:
[tex]\sqrt{5(-6)+6} =\sqrt{-24} = -6\\[/tex]
This equation is not correct, therefore A is not a root and is extraneous
What is an equation of the line that passes through the points (0, -1) and (6, 1)? Put your answer in fully reduced form
Answers
Which polynomial is paired to its factored form?
49x2 + 112x + 64 and (7x + 8)3
25x2 − 45x + 81 and (5x – 9)2
216x3 − 540x2 + 450x – 125 and (6x – 5)3
729x3 + 324x2 + 144x + 64 and (9x + 4)3
Answers
Answer:
216 x^3 - 540 x^2 + 450 x - 125 = (6 x - 5)^3
Step-by-step explanation:
The first one cannot be a perfect cube, since the first term contains x^2 and not x^3.
the second one is not a perfect square (the coefficient of the middle term should be an even number: "-90")
The third expression is the perfect cube as shown.
two angles of a triangle measure 55° and 20°
Answers
Answer: All triangles have a 180 degree to them so 55+20 is 75 AND 180 degrees - 75 gives us 105 degrees. Although I know my math is correct a picture of this triangle would be helpful
Step-by-step explanation:
Fill in the table of values for the equation y = x + 2
Answers
Answer:
-3
2
5
Step-by-step explanation: