Answer:
Step-by-step explanation:For any shape it’s always true that for volume
V
the surface area is: =2‾‾‾√3
for some constant depending on the shape. So to work out the surface area from the volume we just need to know the value of for the shape in the question.
For a cube for example we have that =6, assuming consistent units i.e.: unit 2 for area and unit 3
3
for volume.
More generally if we have formula for both volume and surface area in terms of a particular one dimensional measurement
d
of the shape then we can always write these formula in the form:
=13
=12
for constants constants 1 and 1
. Then we have:
=1‾‾‾√3
=1(1)2‾‾‾‾‾‾√3
=121‾‾‾√32‾‾‾√3
and therefore:
=121‾‾‾√3
For example for a sphere we have that that =42 and =433 and therefore:
=4(43)2‾‾‾‾‾‾√3
=36‾‾‾‾√3
So if a particular sphere has volume =8 then we can calculate its surface area to be:
=36‾‾‾‾√382‾‾√3=436‾‾‾‾√3 m2
BRAINLIEST FOR THE CORRECT ANSWER!!
Look at the graph. How would you describe the activity in Nora's Savings Account over the 10th, 11th, and 12th month?
A) The number of dollars did not change.
B) The number of dollars decreased.
C) The number of dollars slightly increased.
D) The number of dollars dramatically increased
Answer:
D
Step-by-step explanation:
answer choices a/b can be eliminated because it's increasing, and answer choice c can be ruled out because its a dramatic increase!
hope this helps!<3
Hello, can somebody help?
x+4y=9
if x = y+4
Answer:
4x + 8y =12 [inconsistent]
x + 2y = -3
x = 6 [inconsistent]
x = -2
2y = 5x + 6 [inconsistent]
-10x + 4y = 8
x - 3y=2
4x - 12y = 8 [dependent]
x+ 4y = 12 [independent]
2x - 8y = 4
4x + 8y = -6 [dependent]
6x + 12y = -9
4y - 2x = 6 [inconsistent]
8y = 4x -12
y - x = 0 [independent]
y = -x
2y - x = 4
1/2x - y = 2 [inconsistent]
Step-by-step explanation:
if the points (0,4) and (2,8) lie on the same line what is the rate of change of the line. I WILL GIVE BRAINLIST!!!
Answer:
2
rate of change = change in y / change x
change in y = 8-4 = 4
change in x = 2-0 = 2
4 / 2 = 2
TEXT ANSWER
If you bought 28 shares of stock at $30/sh and sold them
at $25/sh.
How much did you net after selling the shares?
.
Was it a profit or a loss?
Answer:
Loss
Step-by-step explanation:
It would be a loss because you bought them for 30$ but could only sale them for 25$ meaning you lossed 5$.
This means the price you bought them for changed 16.667% decrease.
Hope it helps have a great day:)
Which number is not a perfect square?
(A) 1
(B) 25
(C) 30
(D) 36
Answer:
Hello! :) I hope I’m correct!!
Step-by-step explanation:
I think (C) 30 is not a perfect square.
(A) 1 = perfect square
(B) 25 = perfect square
(C) 30 = NOT a perfect square
(D) 36= perfect square
{Note: The square root of 30 is not an integer, so therefore 30 is not a square number}
Since the question is asking to find a number that is NOT a perfect square...
The answer would be (C) 30
Hope this helps! If you have any questions about this, feel free to ask! Have a wonderful day! ^-^
~By, BrainlyAnime~ <3
simplify 3(2x-2)-2(x-2)
A.3x-3
B.3x-4
C.4x-2
D.4x-4
PLEaseeeEEE help will give brainliest and 20 points!
Given the following polynomial describe the end behavior:
f(x) = 6x^5 + 5x^4 + x-10
Answer:
Falls to the left and rises to the right
Hope this helps!
POINTS!! I NEED HELP WITH THIS, WILL GIVE BRAINLIEST TO BEST ANSWER
(9 & 10)
Answer: I got these correct 100%.
Step-by-step explanation:
First page:
1. True
2. True
3. True
4. True
5. False
6. True
7. False
Second page:
1.False
2.False
3.False
4.False
5.False
6.True
7.True
8.True
answer only. Thanks
the answer is b bc the way the other 2 are
Step-by-step explanation:
its the pattern.
What is the gradient of the blue line? Need asap
Answer:
the gradient is -5/1 or -5 because it is a negative slope meaning you would go from top to bottom.
Step-by-step explanation:
mr clean
Answer:
-5
Step-by-step explanation:
The points through which the line passes are :-
(-1, 0) and (-2, 5)
Slope (m) = 5 - 0 / -2 + 1
= 5 / -1
= -5
*I NEED THIS ASAP*
5. number of terms
6. degree
7. leading coefficient
8. end behavior
9. turning point(s)
10. x-intercept(s)
11. relative minimum(s)
12. relative maximum(s)
Answer:
5 terms
to the fourth degree
leading coeff of 1
3 turning points
end behavior (when x -> inf, y -> inf. When x -> - inf, y -> -inf)
x intercepts are (0,-4) (0,-2) (0,1) (0,3)
Relative min: (-3.193, -25) (2.193, 25)
Relative max: (-0.5, 27.563)
Step-by-step explanation:
The terms can be counted, seperated by the + and - in the equation given.
The highest exponent is your degree.
The number before the highest term is your leading coeff, if there is no number it is 1.
The turning points are where the graph goes from falling to increasing or vice versa.
End behaviour you have to look at what why does when x goes to -inf and inf.
X int are the points at which the graph crosses the x-axis.
The relative min and max are findable if you plug in the graph on desmos or a graphing calculator.
A chair can be purchased in one of four colors: red, white, green, or blue. The number of chairs purchased in each color is listed below. Red: 150 white: 450 green: 225 blue: 375 Based on the information shown in the list, what is the probability that the next chair purchased will be red?
Answer:
[tex]P(Red) = 0.125[/tex]
Step-by-step explanation:
Given
[tex]Red: 150[/tex]
[tex]White: 450[/tex]
[tex]Green: 225[/tex]
[tex]Blue: 375[/tex]
Required
Determine the probability of getting a red chair, next.
First, we nee the total number of chairs
[tex]Total = 150 + 450 + 225 + 375[/tex]
[tex]Total = 1200[/tex]
Probability of getting red is then calculated as thus;
[tex]P(Red) = Red/Total[/tex]
[tex]P(Red) = 150/1200[/tex]
[tex]P(Red) = 0.125[/tex]
The graph of g(x) = x2 + 2 is a translation of the
4
graph of f(x)
by
units.
2
DONE
-4
-2
-2
-4
y=x²
Answer:
up and 2; down and 3
Step-by-step explanation:
hope this helps!! have an amazing day <3
The equation the function after the transformation is g(x) = -4x² - 16
What is transformation?Transformations are changes done in the shapes on a coordinate plane by rotation, reflection or translation.
here, we have,
to determine the transformation of the function:
The equation of the function is given as
f(x) = x²+2
The sequence of transformations is given as follows:
Translate up by 2 units
Reflection across the x-axis
Vertically stretched by a factor of 4
When the above transformations are combined, we have:
Translate up by 2 units: g(x) = f(x) + 2
Reflection across the x-axis: g(x) = -(f(x) + 2)
Vertically stretched by a factor of 4: g(x) = -4(f(x) + 2)
So, we have
g(x) = -4(x²+2 + 2)
Expand
g(x) = -4x² - 16
Hence, the function g(x) is g(x) = -4x² - 16
Read more about transformation at
brainly.com/question/27224272
#SPJ7
Need help with question 7- TYSM!
Answer:
A=½bh
20=5x(½)
multiply by reciprocal both sides
40=5x
divide
8=x
Mount Everest is the highest mountain on Earth, measuring 8848 meters high. It takes 40 days to climb Mount Everest. Suppose that a climber climbed the same number of meters each day. About how many meters would he climb each day (rounded to the nearest 10)?
Answer: Mount Everest (8,848 m 29,029 ft) was first climbed, when the summit was reached by Edmund Percival Hillary
Write the missing decimal so that each pair adds to 1. 2/5+decimal =1
Answer:
0.6
Step-by-step explanation:
We can get the answer by subtracting the decimal by one.
2/5 = 0.4
1 - 0.4 = 0.6
ill give brainlyst to the first person to help me:)
on the day a coffee shop opened it had 140 customers 75% of the customers ordered a large coffee. how many customers ordered a large coffee?
= 65% x 140 = 91
65..............100
n.................140
n = 140 x 65 : 100 = 91
I got another question
CAN ANYONE HELP ME??
if anyone can help me out with my math class this quarter, it'd be greatly appreciated. my mental health hasn't been the best, and it's really reflecting in my grades. staying focused, motivated and positive has been the hardest. i can comment my instagram username if anyone can help, so we can talk through dms. :) thank you so much.
Answer:
i'd give you my insta
Step-by-step explanation:
Simplify. 5 2+20
5
30
45
72
(The 5 2 is an exponent.)
Answer:C.45
Step-by-step explanation:
[tex]\Huge\boxed{Your\;answer\;is\;45.}[/tex]
___________________________________________________________
[tex]\boxed{Explanation}[/tex]
So, we have the following equation...
[tex]5^2+20=(?)[/tex]
Remember, 5² also means 5x5.
Therefore, [tex]5x5=25\\25+20=45[/tex]
This means your final answer is 45.
___________________________________________________________
Glad to help!
Could i possibly get brainliest?
[tex]\huge\boxed{Thanks,\;Plip.}[/tex]
What is y+2=-7(x-4) in slope intercept form
Answer:
y= -7x+26
Step-by-step explanation:
not sure how to explain... just followed order of operations
need some help with the question in the image
Answer:
oranges $3.50 per Kg, bananas $3 per Kg
Step-by-step explanation:
let b represent cost of bananas and o represent cost of oranges , then
2b + 3o = 16.5 → (1)
o = b + 0.5 → (2)
substitute o = b + 0.5 into (1)
2b + 3(b + 0.5) = 16.5 ← distribute parenthesis on left side and simplify
2b + 3b + 1.5 = 16.5
5b + 1.5 = 16.5 ( subtract 1.5 from both sides )
5b = 15 ( divide both sides by 5 )
b = 3
substitute b = 3 into (2)
o = 3 + 0.5 = 3.5
cost of oranges = $3.50 and cost of bananas = $3
J Problem: Find the slope of a line parallel to each given line. 5) y = 3x - 5
Answer: y = 3x + 5
............................
plz mark brainlest
4. Shelton earns an hourly wage at a grocery store. The following expression represents Shelton’s take home pay after taxes, social security, and his health care plan are deducted. Let x represent the number of hours Shelton worked.
10.25x − 0.21(10.25x)
a) Which term represents Shelton’s total pay before deduction?
b) Shelton wants to save $1,675 for a new laptop. If Shelton saves 25% of his take-home pay, how many hours will he need to work to meet his savings goal?
Answer:
a) Shelton’s total pay before deduction: 10.25x
b) To meet savings goal he'll have to work 827.415869 hours.
Step-by-step explanation:
Take-home pay:
10.25x − 0.21(10.25x)
10.25x − 2.1525x
8.0975x
Save 25% for new laptop:
.25(8.0975x) = 1675
2.024375x = 1675
x = 827.415869 hours
A cone is shown
What is the approximate volume of the cone?
A.
120 cubic inches
B.
628 cubic inches
C.
1,884 cubic inches
D.
2,512 cubic inches
Answer: 628.32 inch cubed
Step-by-step explanation:
Formula for volume of a cone: 1/3 x area of base x height
Area of base: pi x radius squared
= pi x 10 squared
= 314.16
Now, 1/3 x 314.16 x 6
= 628.32
Answer:
Answer:
B
Step-by-step explanation:
[tex]Known\ by\ the\ graphic,\ r=\frac{1}{2}\bullet20=10,\ h=6[/tex]
[tex]V=\frac{1}{3}[/tex]π[tex]r^2[/tex]·h[tex]=200\pi\approx628[/tex]
[tex]So\ choose\ B.[/tex]
I hope this helps you
:)
PLEASE HELP!!!!! Will award brainliest need help asap
[tex]\\ \rm\rightarrowtail 2-sin^2x=2cos^2\left(\dfrac{x}{2}\right)[/tex]
[tex]\\ \rm\rightarrowtail 1+1-sin^2x=2cos^2\left(\dfrac{x}{2}\right)[/tex]
1-sin^2x=cos^2x[tex]\\ \rm\rightarrowtail 1+cos^2x=2cos^2\left(\dfrac{x}{2}\right)[/tex]
[tex]\\ \rm\rightarrowtail cos^2x=2cos^2\left(\dfrac{x}{2}\right)-1[/tex]
[tex]\\ \rm\rightarrowtail cos^2x=cosx[/tex]
[tex]\\ \rm\rightarrowtail cosx=1[/tex]
[tex]\\ \rm\rightarrowtail x=n\pi[/tex]
As x lies in between 0 and 2π
The answers are 0,2πAnswer:
[tex]x=0,\dfrac{\pi}{2}, \dfrac{3\pi}{2},2\pi[/tex]
Step-by-step explanation:
Given equation:
[tex]2-\sin^2x=2 \cos^2(\frac{x}{2})[/tex]
Subtract [tex]2 \cos^2(\frac{x}{2})[/tex] from both sides:
[tex]\implies 2-\sin^2x-2 \cos^2(\frac{x}{2})=0[/tex]
Pythagorean identity
[tex]\sin^2x+\cos^2x =1[/tex]
[tex]\implies \sin^2x =1-\cos^2x[/tex]
Substituting into the equation:
[tex]\implies 2-(1-\cos^2x)-2 \cos^2(\frac{x}{2})=0[/tex]
[tex]\implies 1+\cos^2x-2 \cos^2(\frac{x}{2})=0[/tex]
Cosine double angle identity:
[tex]\cos(2x)=2 \cos^2x-1[/tex]
[tex]\implies 2 \cos^2x=\cos(2x)+1[/tex]
Substituting [tex]\frac{x}{2}[/tex] for [tex]x[/tex]:
[tex]\implies 2 \cos^2(\frac{x}{2})=\cos(2\cdot\frac{x}{2})+1[/tex]
[tex]\implies 2 \cos^2(\frac{x}{2})=\cos x+1[/tex]
Substituting into the equation:
[tex]\implies 1+\cos^2x- (\cos x +1)=0[/tex]
[tex]\implies \cos^2x- \cos x =0[/tex]
Factoring:
[tex]\implies \cos x(\cos x- 1)=0[/tex]
Therefore,
[tex]\cos x=0[/tex]
[tex]\implies x=\dfrac{\pi}{2}, \dfrac{3\pi}{2}[/tex]
and [tex]\cos x-1=0[/tex]
[tex]\implies \cos x=1[/tex]
[tex]\implies x=0, 2\pi[/tex]
f(x) = 3x + k
f(4) = 10
easy equation but I just need a confirmation that the answer is actually -2 lol
Answer:
-2
Step-by-step explanation:
f(x) = 3x + k
f(4) = 10
f(4) = 3×4+k
10 = 12 + k
10-12 = k
k = -2
Find the degree of the monomial.
-39^4rs^6
The degree is
Answer:
The answer to your question would be 20
Hope this helps!
Which is not a cubic number?a.1 b.9 c.27 d.64
Answer:
9
Step-by-step explanation:
1= 1x1x1 cubic
27=3x3x3 cubic
64=4x4x4 cubic
9 is not cubic
Answer:
Step-by-step explanation:
1x1x1=1³
3x3x3=27=3³
4x4x4=64=4³