Answer:
The correct option is C: the isotope of iodine contains 81 neutrons.
Step-by-step explanation:
The mass (A) of the iodine isotope is given by:
[tex]A = Z + N[/tex]
Where:
Z: is the number of protons
N: is the number of neutrons
For iodine Z= 53, so if A = 134 the number of neutrons is:
[tex] N = A - Z = 134 - 53 = 81 [/tex]
Therefore, the correct option is C. The isotope of iodine contains 81 neutrons.
I hope it helps you!
Please help me soon thxs
Answer: Vertical angles
Step-by-step explanation:
Answer:
Vertical Angles
Step-by-step explanation:
Vertical angles are "any opposite pairs of angles made by intersecting lines."
Also, if 2 angles are vertical, they are also congruent.
1. y = x2 + 2x – 8
Axis of Symmetry:
Vertex:
Domain:
Range:
Answer:
Axis of Symmetry: x=-1
Vertex: (-1,-9)
Domain: (- ∞ ,∞ )
Range: (-9,∞ )
Step-by-step explanation:
what is 3/4 ÷ 1/8 tell me th asnwer
Answer:
3/4 * 8/1=24/4= 6
Step-by-step explanation:
3/4 ÷ 1/8
keep change flip
3/4 × 8/1
3×8=24 4×1=4
24/4 improper fraction
6 answer
Answer:
answers = 24/4 = 6
Step-by-step explanation:
Evaluate, if x = -12, y = -4, and
z is = 9
Help emnenenememmeemmenenedudhshs
HELP ME PLS IM HELLA DUMB
Convert the following equations from point-slope form to slope-intercept form.
9) y – 4 = 3(x – 1)
10) y – 1 = -4(x – (-3))
We need to solve both for y.
#9:
[tex]y - 4 = 3(x - 1)\\\\y - 4 = 3x - 3\\\\y = 3x + 1[/tex]
#10:
[tex]y - 1 = -4[x - (-3)]\\\\y - 1 = -4(x + 3)\\\\y - 1 = -4x - 12\\\\y = -4x - 11[/tex]
The roots of the equation 2x^2 -12x+12 =-3
Answer
Step-by-step explanation find the roots of the equation by solving for x
What is the vertex of this parabola? y= 2x² + 4x +5
Answer:
vertex = (- 1, 3 )
Step-by-step explanation:
Given a parabola in standard form
y = ax² + bx + c ( a ≠ 0 )
Then the x- coordinate of the vertex is
[tex]x_{vertex}[/tex] = - [tex]\frac{b}{2a}[/tex]
y = 2x² + 4x + 5 ← is in standard form
with a = 2, b = 4, then
[tex]x_{vertex}[/tex] = - [tex]\frac{4}{4}[/tex] = - 1
Substitute x = - 1 into the equation for corresponding value of y, that is
y = 2(- 1)² + 4(- 1) + 5 = 2 - 4 + 5 = 3
vertex = (- 1, 3 )
DUE ASAP AT 11!!!!!!!!1 -3x - 6x = 6 + x - 7x
A -2
B -12
C -3
D 11
Answer:
The correct answer is -2
Answer:
-2
Step-by-step explanation:
3x-6x=6+x-7x
=> -3x-x+7x=6
=> -4x+7x=6
=> 3x=6
=> x=6/3
=>x=2
Please help as fast as possible thanks much appreciated in advance
Answer:
140
Step-by-step explanation:
x = 7 ; y = -2
7(2x - 3y) = 7(2*7 - 3*[-2])
= 7(14 + 6)
= 7 * 20
= 140
Step-by-step explanation:
this is what I believe the answer is and the work for it
7/15 - 2/5
please can someone do a step by step? thank you
Answer:
1/15
Step-by-step explanation:
1.) Make the denominator equal by turning the 5 into a 15 (In order to subtract it properly)
2.) Make the 2 correspond with the denominators. In this case multiply by 3 because 5 goes in to 15 3 times. Equation Now: 7/15 - 6/15
3.) Subtract the numerators to get your answers
4.) Final Answer: 1/15
3(2y + 4) = 7y + 4 - y y =
I cant get an accurate answer for this problem Help!
Answer:
No solutions
Step-by-step explanation:
3(2y + 4) = 7y + 4 - y
~Simplify both sides
6y + 12 = 6y + 4
~Subtract 12 to both sides
6y = 6y - 8
~Subtract 6y to both sides
0 = 8
Best of Luck!
(7(c)6) please answer right now
Answer:
42c
Step-by-step explanation:
There will be 1,398 students attending the assembly. During the assembly, our principal is going to be passing out 4 pieces of paper to each student. How many pieces of paper will the principal pass out at the assembly? *
Answer:
5592 pieces of paper
Step-by-step explanation:
Simple multiplication
1398(4)= 5592
Can you arrange 25 small squares to make a larger square? Can you arrange
35 small cubes to make a larger cube?
help me please with this the picture is below
Answer:
6
Step-by-step explanation:
help! I’m stuck.. this is due at 7:00pm
Answer: -6
Step-by-step explanation:
since they are both negative, they both will add up to be -6
"6 reduced by a number"
Answer:
6-x
Step-by-step explanation:
Pls help! For finalWhich equation can be solved to find x, the measure of to in the diagram
below?
53
A
Klein opened a savings account that paid 5% simple interest with 6,000 in principal. If Klem left that money untouched in the account for ten years,then how much interest with he have earned?
Answer:
I= $3,000
Step-by-step explanation:
Giving the following information:
Klein opened a savings account that paid 5% simple interest with 6,000 in principal.
Number of periods= 10 years
To calculate the interest earned, we need to use the following formula:
I= P*r*t
P= principal
r= interest rate
t= time
I= 6,000*0.05*10
I= $3,000
33 is 90% of what number? Round to the tenths place.
Answer:
36.7
Step-by-step explanation:
Since 33 is 90% of a number, you can divide 33 by 9 to get 3 2/3. This 3 2/3 is 10% of the number, so multiply 3 2/3 by 10 to get 36 2/3. 36 2/3 rounded to the nearest tenth is 36.7, so there's your answer. Hope it helps!
Does the transformation represent a dilation? Why or
why not?
O no, because each vertex is not multiplied by the
same scale factor
O yes, because each vertex is multiplied by 4/3
O yes, because each vertex is multiplied by 2
Answer: A: no, because each vertex is not multiplied by the same scale factor.
Step-by-step explanation: got it right on Edge 2020!
A company has 2 photocopy machines. The probability that machine A will breakdown on a given day is 2%. The probability that machine B will break down is 2.5%. What is the probability that both machines will break down on a given day? Give your answer in percent.
Answer:
jsosksnssixixjzj
Step-by-step explanation:
OK OK OK. dkdkdmx
sozknz
xkxk
PLZ MARK ME AS BRAINLIST
PLZ HELP ME ITS 30 POINTS TROLLERS WILL BE REPORTED
Answer:
haha troll go brrr
Step-by-step explanation:
2,4,5 (actual answer)
2-angle MNP (38) is less than angle ONP (39)
4- they are equal by the reflexive property of congruence op
5-is MNP has a lower angle, side MP should have a longer side
What is the slope of a line that is parallel to the graph of the equation y = 10x - 20?
Answer:
y parallel =10 or 10
Step-by-step explanation:
19. PLEASE HELPP !!Mel cleans houses.
She earns $7.50 every hour that she dusts.
She earns $10.00 every hour that she scrubs floors.
She scrubbed floors for 1 42 hours and dusted for 2 hours.
How much money did Mel earn?
PLEASE HELP !!
Answer:
1435.00
Step-by-step explanation:
dusted 2 hours. 15.00
Scrubbed floors 142 hours= 1420.00
Answer:
$30
Step-by-step explanation:
10$ x 1.5 (hours) = 15$ (the reason i did 1.5 is because she scrubbed for 1 and a half hours)
$7.50 x 2 (hours) = $15
$ 15 + $15 = 30
she earned $30 dollars
A cell phone company charges $45 per month for unlimited calls and $0.25 per text messages. Another call phone company $0.15 per text messegaes and $70 per month for unlimited calls. Write an equation to reoresent when the cost from both compsnies will be the same after one month
Answer:
You first start by making your equation: 45 +.25x = 70 +.15x. then subtract .15x from both sides. it should look like 45 +.10x = 70. subtract 45 from both sides then you get .10x = 25. divide 10 to both sides and you get 250. so the two companies will be the same at 250 texts.
Step-by-step explanation:
Y=2x + ? ITS DUE IN 20 MINUTES
Evaluate the expression 5a + 12b for a = 5 and b = 12
PLEASE PLEASE help!
Answer:
I think the answer is 169