Given :
Electronic configuration of an electron :
[tex]1s^2\ 2s^2\ 2p_x^2\ 2p_y^2\ 2p_z^2\ 3s^2 \ 3p_x^2\ 3p_y^2\ 3p_z^2[/tex] .
To Find :
The element having such an electronic configuration .
Solution :
We know , the sum of all the power of s and p in all the orbit gives total number of atoms in elements .
So , atomic number is :
[tex]Z=2+2+(2+2+2)+2+(2+2+2)\\\\Z=18[/tex]
Since , the atomic number is 18 .
Therefore , the element is Argon .
Hence , this is the required solution .
Mr. Smith is ordering steaks to serve at a poker game with his friends. The first company charges a delivery fee of $10 plus $15 per steak. The second company charges a delivery fee of $25 and charges $10 per steak. How many steaks would Mr. Smith have to order so that both companies cost the same amount?
Answer:
he would have to order 3 steaks from the first company and 3 from the second
Step-by-step explanation:
What is the value of x (8x-8)° (7x+8)°
I'm going to assume they are the same angle.
Steps to solve:
(8x - 8) = (7x + 8)
~Add 8 to both sides
8x = 7x + 16
~Subtract 7x to both sides
x = 16
Best of Luck!
Help me ASAP
I need to be done with this in 10 minutes
Answer:
B) [tex]y= \frac{1}{2}x+4[/tex]
Step-by-step explanation:
Find the value of b using the formula for the equation of a line.
[tex]y=mx+b[/tex]
Replace the known value of m in the slope y-intercept form of the equation.
[tex]y=(\frac{1}{2}) x+b[/tex]
Replace the known value of b in the slope y-intercept form of the equation.
[tex]y=(\frac{1}{2}) x+4[/tex]
An entry level designer's annual pay is $49,868 based on 52 weeks per year. Due to the economy, his company is having to cut back on the number of weeks that it employs its designers. If the firm cuts the work year to 50 weeks but keeps the same rate of pay, how much should the designer expect his annual pay to decrease? Round your answer to the nearest dollar.
Answer: his pay will decrease by $1,918
Step-by-step explanation:
49868/52 = 959
959 × 50 = 47950
49868 - 47950 = 1918
ax+3=23 if a=0 plz help
Answer:
x = [tex]\frac{23}{a}[/tex]
Step-by-step explanation:
Given equation is,
ax + 3 = 23
To solve this equation for the value of x isolate the variable 'x' on the one side of the equation.
Step 1,
Subtract 3 from both the sides of the equation.
ax + 3 - 3 = 23 - 3
ax = 20
Step 2,
Divide the equation by a,
[tex]\frac{ax}{a}=\frac{23}{a}[/tex]
x = [tex]\frac{23}{a}[/tex]
Therefore, x = [tex]\frac{23}{a}[/tex] will be the answer.
I need help ASAP please!!
Answer
6/8 -- 3/4
9/7 -- 1 2/7
2 1/2 -- 5/2
1/2 -- 5/10
A friend provides 100 pieces of supporting evidence for a mathematical statement. What is the minimum number of counterexamples needed to prove the statement false?
100
it's impossible
1
101
Answer:
1 true good statement can prove his friend wrong.
Step-by-step explanation:
Answer is 1.
Round 374,462,894 to the nearest thousand. Explain each step of the process.
Answer:
374,463,000
Step-by-step explanation:
374,462,894
Identify the thousands spot and locate the digit next to it.
374,462,894
If the number is greater than or equal to 5, we round up. If the number is less than or equal to 4, we round down.
8 is greater than or equal to 5. We round up.
374,462,894 ≈ 374,463,000
Hope this helps.
Answer:
[See Below]
Step-by-step explanation:
✦ The number in the thousandth place is [tex]2[/tex].
✧ To round, look at the number to the right, in this case it's [tex]8[/tex].
○ If the number is greater than or equal to [tex]5[/tex], then round up.
○ If the number is less than [tex]5[/tex], round down.
✦ So then we would change the [tex]2[/tex] to a [tex]3[/tex].
✦ Then rewrite the number:
✧ [tex]374463000[/tex]
~Hope this helps Mate. If you need anything feel free to message me.
Using distributive property and combining like terms simplify the expression.
-9(1-10n)-2(3n+9)
Answer: -27 + 84n
Step-by-step explanation:
**Shown in image...the arcs represent distributive property. This is a good way to separate your work. After distributing, you then have your like terms. Combine ‘1 underline’ with another, ‘2 underline’ with another.
If you need any more help, please let me know. :)
what steps could be used to solve the equation 1 + 3x = -x + 4.
Answer:
Combing like terms
Step-by-step explanation:
Answer: x = 3/4
Step-by-step explanation:
1+3x = -x+4
or, 1-4 = -x-3x
or, -3 = -4x
or, 4x = 3
or, x = 3/4
so, x = 3/4
Alex purchased a seven-year $600 bond at par value with a 5% coupon. What is the total value of the coupons?
Answer
300 dollars
because u do 600x.5
Answer:
$210
Step-by-step explanation:
Coupon payment : 0.05 x $600 = $30
Total coupon payment : $30 x 7 years = $210
find the distance between these two points (-6, -5) and (2, 0)
Answer:
[tex]\sqrt{89}[/tex]
Step-by-step explanation:
Use Distance Formula
[tex]\sqrt{(x_{2}-x_{1} )^{2} + (y_{2}-y_{1} )^{2} }[/tex]
Substitute
[tex]\sqrt{(-5-0)^{2}+(2+6)^{2} }[/tex]
Simplify
[tex]\sqrt{(-5)^{2}+(8)^{2} }[/tex]
Simplify
[tex]\sqrt{25+64}[/tex]
Add
[tex]\sqrt{89}[/tex]
How can the tiles be sorted? (I need it quick please)
Answer:
by fraction and decimals
Step-by-step explication:
A student found that the side lengths of a square rug were 1.80. The student was asked to
report the area using the correct number of significant digits. He wrote the area as 3.2.
HELPPPPP!!!! tHIS IS REALLY HARD!!!!!
Answer: J.
Step-by-step explanation: -tanx i believe
Answer:
H: 2
Step-by-step explanation:
[tex]\frac{\sqrt{1-\cos ^2\left(x\right)}}{\sin \left(x\right)}+\frac{\sqrt{1-\sin ^2\left(x\right)}}{\cos \left(x\right)}[/tex]
LCM is [tex]\cos \left(x\right)\sin \left(x\right)[/tex]
Adjust fractions:
[tex]\frac{\sqrt{1-\cos ^2\left(x\right)}\cos \left(x\right)}{\sin \left(x\right)\cos \left(x\right)}+\frac{\sqrt{1-\sin ^2\left(x\right)}\sin \left(x\right)}{\cos \left(x\right)\sin \left(x\right)}[/tex]
Combine:
[tex]\frac{\sqrt{1-\cos ^2\left(x\right)}\cos \left(x\right)+\sqrt{1-\sin ^2\left(x\right)}\sin \left(x\right)}{\sin \left(x\right)\cos \left(x\right)}[/tex]
--------------------------------------------------------
We will take a look at [tex]\sqrt{1-\cos ^2\left(x\right)}\cos \left(x\right)[/tex].
Using the identity that [tex]\cos ^2\left(x\right)+\sin ^2\left(x\right)=1[/tex], we know that [tex]1-\cos ^2\left(x\right)=\sin ^2\left(x\right)[/tex].
Therefore, [tex]\sqrt{1-\cos ^2\left(x\right)}\cos \left(x\right)=\sqrt{\sin ^2\left(x\right)}\cos \left(x\right)=\sin \left(x\right)\cos \left(x\right)[/tex]
-----------------------------------------------------------------------------------------------
Similarly, [tex]1-\sin ^2\left(x\right)=\cos ^2\left(x\right)[/tex] so
[tex]\sqrt{1-\sin ^2\left(x\right)}\sin \left(x\right)=\sqrt{\cos ^2\left(x\right)}\sin \left(x\right)=\cos \left(x\right)\sin \left(x\right)[/tex]
-------------------------------------------------------------------------------
We will finally end up with
[tex]\frac{\sin \left(x\right)\cos \left(x\right)+\cos \left(x\right)\sin \left(x\right)}{\sin \left(x\right)\cos \left(x\right)}[/tex]
Add:
[tex]\frac{2\sin \left(x\right)\cos \left(x\right)}{\sin \left(x\right)\cos \left(x\right)}[/tex]
Cancel out sin(x):
[tex]\frac{2\cos \left(x\right)}{\cos \left(x\right)}[/tex]
Cancel out cos(x):
[tex]2[/tex]
can you please help
Answer:
the correct ans is c.(8)
Step-by-step explanation:
2 miles in 3/4 of an hour
Answer:
2
Step-by-step explanation:
The diagram represents an enlargement of a rectangle by a scale factor of 4,
4 in
2 in
[Not drawn to scale]
Help ASAP
Answer:D 16inches by 8 inches
Step-by-step explanation:
Answer:
16 in by 8 in
Step-by-step explanation:
Under a dilation centered at the origin, the vertex, (−2, 4), of a polygon is moved to the point (4, −8) . What is the scale factor of the dilation?
Answer:
-2
Step-by-step explanation:
I took the quiz.
The scale factor of the dilation is -2.
How does dilation works?Dilation of a figure will leave its sides get scaled (multiplied) by same number. That number is called the scale factor of that dilation.
It's also called scaling of a figure, but due the involvement of coordinates, it involves a center of a dilation, which is like a pinned point which stays at same place after dilation.
It's like we enlarge or shorten the size of the figure (or keep it same, when scale factor = 1).
Given that Under a dilation centered at the origin, the vertex, (−2, 4), of a polygon is moved to the point (4, −8) .
Then the scale factor of the dilation
(-2k , 4k )= (4, −8)
Thus, -2k = 4
k = -2
Hence, the scale factor of the dilation is -2.
Learn more about dilation here:
https://brainly.com/question/27212783
#SPJ2
Rupert buys a bicycle with a marked price of £ 12500.He gets a rebate of 10% on it. After getting
the rebate ,tax is charged at the rebate of 8%. Find the amount he will have to pay for the bicycle.
Answer:
£ 12,150
Step-by-step explanation:
Marked price of bicycle = £ 12500
Rebate = 10%
Amount of rebate = 12500*10/100 = £1250
Rebated price = 12500 - 1250 = £ 11,250
Tax = 8%
Amount of tax = 11250*8/100 = £ 900
Total amount paid for bicycle = Rebated price + amount of tax
= £ 11,250 + £ 900
= £ 12,150
7 is what % of 100? i'm really confused on this
Answer:
7%
Step-by-step explanation:
Since percentages are out of 100. (Cent=100) Therefore 7/100 is 7%.
Answer:
7 %
Step-by-step explanation:
Is means equals and of means multiply
7 = P * 100
Divide each side by 100
7/100 = P
Percent means out of 100
7 %
PLEASE HELP ME ILL GIVE BRAINLIEST
Answer:
-36.5
Step-by-step explanation:
substitute 8.5 for v
8-(6(8.5)+2-(8.5))
8-(51+2-8.5)
8-44.5
edited cause I forgot the 8 at first :P
One week, Wyatt earned $70.40 at his job when he worked for 4 hours. If he is paid the same hourly wage, how many hours would he have to work the next week to earn $281.60?
Answer: 8 hours
Step-by-step explanation: he gets 70.40$ to work for 4 hours so you'll have to multiply 4 by 70.40 to represent it's doubling to 8 and you'll get 281.60
70.40x4=281.60
so add this 4 to the other 4 it makes 8 because that's how much it would take to get there 4 steps up to really =8
i'm sooo dificult
The sum of twice a number and 6 is the same as 3 subtracted from the number itself
What is 9.2568 x 10-3 in standard notation?
Answer:
0.0092568
Step-by-step explanation:
10^-3 means to move the decimal 3 places to the left.
0.0092568
: Is the elevation halfway between the peak of Mount Belinda and the South Sandwich Trench above sea level or below sea level? Give your explanation without calculating the exact value. this is due today
Ones measured above sea level which is Mount Belinda 1,370 meters above the other one is South Sandwich Trench 8,428 meters below sea level. Below sea level because you subtract the above sea level by below sea level you still end up with below sea level. 3,529 kilometers below sea level how i did this i subtracted 8,428 by 1,370 and 7,058 than divided that by 2 to get to the center of both
Is geometric sequence a linear function? SOMEONE HELP ME
Answer:
No
Geometric sequences are exponential functions, not linear functions. The answer is no.
A town's pharmacy and hospital are 3 miles apart. If a map of the town has a
scale, where 1 inch=0.25 mile, what is the distance between the pharmacy and
the hospital on the map, in inches?
because we use simple rule of three
2 inches ---------------- 5 miles
20inch -------------- xmiles
x = 100/2
x = 50
product of 26.5 and 3/5
Answer: 15.9
Step-by-step explanation:
Multiply them and get 15.9
Consider the following information.
U = {all table games}
C = {card games} = {Hearts, Euchre, Go Fish, Uno, Snap, Set}
S = {card games using a standard deck of cards} = {Hearts, Euchre, Go Fish, Snap}
O = {card games using other decks of cards} = {Uno, Set}
B = {board games} = {chess, checkers, backgammon}
The disjoint sets are:
Answer:
2
Step-by-step explanation:
Two sets A and B are called disjoint if A and B have no elements in common. Another equivalent definition of disjoint sets would be that the intersection of the two sets actually equals the empty set.
