Answer:
3x(x2−2)
Step-by-step explanation:
Your grandfather has enjoyed good vision for most of his 80 years. You observe him having trouble reading websites on his new iPad, squinting while he moves it towards and away from his face. You realize he might benefit from reading glasses. Since you were going out anyway, you offer to pick up a pair of glasses for him at the drug store. Consider that your grandfather is at his most comfortable reading posture when he is holding the iPad at a distance of 18 inches.
a. What dioptric power of reading glasses should you get for your grandfather? Note that reading glasses are normally available in increments of 0.25 Diopter.
b. It occurs to you that you could have just shown grandpa how to make the displayed content appear larger on the iPad by adjusting the display "zoom". What percentage zoom (100% is the default view, 200% would make text and images twice as large) would give your grandfather a similar viewing experience to wearing the reading glasses you were planning to purchase?
Answer:
Step-by-step explanation:
Given that:
The focal point = 18 inches
= (18 × 0.0254)m
= 0.4572 m
= 45.7 cm
For such a comfortable distance of 45.7 cm, the perfect lens power for grandfather can be determined.
Let's recall that, the accommodation amplitude usually decreases with age and eventually becomes 1 D after the age of 50.
Thus, +2.5D or a convex lens appears to be a perfect one.
b. We will agree that Diopter illustrates the optical power or most at times the capability of the lens.
So, 3D is equally 1.75X magnification which is likely to be double the zoom as it will be helpful to the grandfather.
Now, for a 2.5D, approximately 1.5X zooming once(200%) will be perfect and equal to viewing with the reading glasses.
what is the solution of 4 + √ 5x + 68 = x + 10
Answer:X=3
Step-by-step explanation: Option B
The function f(x) = 3/4(10)–x is reflected across the x-axis to create the function g(x). Which ordered pair is on g(x)?
Answer:
u already have the answer
Answer:
For people that can't see the picture it's
C (2,-3/400) third option
Step-by-step explanation:
1. (-13.8) and (3, 12)
Hello!
What do you need me to solve?
(-5x+4) + -1 (x - 1)
Answer:
-6x+5Step-by-step explanation:
I assume you want to simplify this expression.
First take away the parenthesis.
-5x+4+-1x+1
Now combine like terms.
-5x+-1x=-5x-1x=-6x.
4+1=5
So -6x+5 is your answer.
I don't know how to solve this problem
Before you read this!! To me, it looks like 8 is the entire length of lineJL, but it may only be the length of lineJM. I've written the steps for lineJL=8 NOT lineJM=8. If this is not the case and 8 is only the length of lineJM let me know so I can fix my answer!
Step-by-step explanation:
The area of a triangle is A=1/2(b)(h)
B=base
H=height
Your height is found in the line in the middle of the triangle, for you it is 6.
The base is the long bottom line on the triangle (lineJL), for you it is 8.
So let's put it in.
A=1/2(8)(6)
A=24sq units (C)
S 4xy
when x = 2, y = 5
Answer: 40
Step-by-step explanation:
Plug in the known values:
4(2)(5) = 8(5) = 40
Answer:
its 40 hope this helps you
Step-by-step explanation:
have a nice day/night
Write
7
2
5
as an improper fraction.
Answer:
7*2/5 it is a improper fraction
Answer:
[tex]\frac{7}{1}[/tex], [tex]\frac{2}{1}[/tex], and [tex]\frac{5}{1}[/tex]
Step-by-step explanation:
Those are all the improper fraction forms of 7, 2, and 5.
Consider C = {vowels in the word "clinic"}. Find n (C)
A. 6
B. 4
C. 2
D. 12
Answer:
D galiba ama emin değilim
Answer:
C. 2
Step-by-step explanation:
As you know
Vowels are a , e , i , o , u
"Cl 'i' n 'i' c" so that's 2
Where would the shape located after a reflection across the x-axis?
I think it would be quadrant 2
5th grade math. Correct answer will be marked brainliest.
Answer:
1. 38.7
2. 3.87
3. .387
Step-by-step explanation:
1. So when dividing by numbers with exponents specifically 10 which is the most common number to have an exponent with you can look at the exponent and that number is the amount of zeros. So in this question there is 10 to the zeroth power. The amount of zeros would be zero so it is actually 1.
So then 10 to the zeroth power is equivalent to 1. The problem then becomes this: 38.7 / 1 which obviously equals 38.7
2. As I explained earlier, 10 to the first power would be 10 because the exponent number is one so that means the amount of zeros is one.
Equation: 38.7 / 10 which to solve you need to move the decimal to the left which gives you the answer, 3.87
3. The exponent number is 2 so, 10 to the second power is 100.
Equation: 38.7 / 100
Move the decimal to the right twice and it will give you the answer .387
Please note that when multiplying by powers of 10 you move the decimal point to the left and when dividing by powers of ten you move the decimal to the right.
I am in fifth grade right now and I have 98% and up in all classes so these are kind of easy for me.
HALP PLZZ!!! WILL GIVE BRAINLIEST IF CORRECT!!! Which of the following is a correct interpretation of the expression -7 - (-11)?
Choose 1 answer:
(Choice A)
Start at -7 on the number line and move 11 to the left.
(Choice B)
Start at -7 on the number line and move 11 to the right.
(Choice C)
Start at -11 on the number line and move 7 to the left.
(Choice D)
Start at -11 on the number line and move 7 to the right.
Answer:
choice B
Step-by-step explanation:
find the perimeter and area of the rectangle with vertices (1, -2), (1, 7), (-3, 7), and (-3, -2)
Answer:
26
Step-by-step explanation:
9+4+9+4=26
PLEASE HELP DUE TODAY WILL GIVE BRAINLIEST TO CORRECT ANSWER
After a few mathletes join the team, the team is able to solve 40% more problems per session. Of the team can solve 42 problems per session now, how many problem were they able to solve before the new mathletes joined?
Step-by-step explanation:
the answer is 16.8 :)hope this helps
Answer: 30 :) have a nice day!!!
77 mi
36 mi
What is the length of the hypotenuse?
C=
miles
Answer:
[tex]\\c=85mi\\[/tex]
Step-by-step explanation:
[tex]77mi^{2} +36mi^{2} =7,225mi\\\\7225mi=c^{2}[/tex]
[tex]\sqrt{7225} =85[/tex]
Determine if the point (4, -3) is a solution
to the following system:
x - y = 4.
2x + y = 5
Determine if the point (4,-3) is a solution
Select ALL the values that make the inequality true: n>-6
А. -8
B.-5
C.6
D-1
Answer:
The answer to the question is A.-5 D.-1
Find the distance between A and B.
A 12 units
B.V106 units
C.9 units
D. 2/12 units
Answer:
B. [tex] \sqrt{106} [/tex]
Step-by-step explanation:
Distance between A(-4, 3) and B(5, -2) using distance formula, [tex] d = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2} [/tex]
Let,
[tex] (-4, 3) = (x_1, y_1) [/tex]
[tex] (5, -2) = (x_2, y_2) [/tex]
Plug in the values into the formula
[tex] d = \sqrt{(5 -(-4))^2 + (-2 - 3)^2} [/tex]
[tex] d = \sqrt{(9)^2 + (-5)^2} [/tex]
[tex] d = \sqrt{81 + 25} [/tex]
[tex] d = \sqrt{106} [/tex]
using binomial expansion evaluate (0.99)^6
Answer:
.92367 I think. I'm I'm wrong I'm sorry
The probability that a first year student entering a certain private college needs neither a developmental math course nor a developmental English is 70% while 22% require a developmental math course and 25% require a developmental English course. Find the probability that a first year student requires both a development math course and a developmental English course.
Answer:
Probability of both English and Maths = 17%
Step-by-step explanation:
Probability of English or Maths
100 -70 = 30%
Probability of English or Maths =
Probability of English + Probability of Maths + Probability of both English and Maths
30 % = 22% + 25 % + Probability of both English and Maths
Probability of both English and Maths = 47% - 30 %
Probability of both English and Maths = 17%
Please help this is due today!
Calculate the unknown missing angle measures.
Do not answer this with one answer ,blank, or a ridiculous answer.... this is serious please.
Answer:
For ABC A= (-3,3) B= (0.2) and C= (-3,1)
For DFE D= (0,6) F= (2,6) and E= (2,3)
Step-by-step explanation:
I believe tha name of a sequence of transformation will be translation and the Reflection
Hope this Helped
A piece of fabric is 2 yards long. The fabric is cut into 24 pieces of equal length.
How long is each piece?
2 inches
3 inches
4 inches
6 inches
Answer:
3 inches
Step-by-step explanation:
Answer:
3 in
Step-by-step explanation:
PLEASE ANSWER ASAP FOR BRAINLEST WITH WORK!!!!!!!!!!!!!!!!!!!!!!
here are some screenshots to help figure out the area of the figure!
thank you in advance!
btw im giving out 100 points and a brainlest so make sure to answer correctly.
Answer:
10
Step-by-step explanation:
I found the anser by multiplying 5 * 4 = 20, and then multiplying 2 * 2 = 4, then 3 * 2 = 6. Next you add 6 and 4, which equals 10. Finally you subtract 10 from 20 to find your answer of ten.
Hope this helps
$26,088,808.74 +
$34,311,887.98 =
Answer:60,400,696.72
Step-by-step explanation:
it just is...
Please help meee I wanna get out of this class already
Answer:
The answer is D.
Answer:
a
Step-by-step explanation:
El numero tal que su 35% es 7
no entendo ???????? isto
10^(x-2)=1000 Show or explain your reasoning.
Answer: x=5 trust me it right
Step-by-step explanation: hope this help:D
I don’t have time to explain bc I have work to do.
x/(x-2)*(x+2)*(x-1) into partial fraction
no matter how many times i redo it my answers just not matching with that of my books. can we have different answers?
Answer:
((-1 + x) (2 + x) X)/(-2 + x)
Step-by-step explanation:
1 (x^(2)x)/(x-2)+(xx)/(x-2)-(2x)/(x-2)
2 (x(x+1)-2)x)/(x-2)
3 (x(xx+x)-2x)/(x-2)
4(x^(2)x+xx-2x)/(x-2)
5 (-2 + x + x^2) X)/(-2 + x)
Root
X = 0 , X-2=0
Roots
X=-2
X=1
Which of the following is equal to this expression? (256⋅64)^1/4
Answer:8•4 √4
Step-by-step explanation:
Which expression represents the same relationships shown on the graph? y = x - 6 y = x + 6 y = 6x y= - 6x