Answers
Answer:
Please check explanations
Step-by-step explanation:
To find the volume of the surface area of a cone, we need to use the height and not the slant height of the cone
The slant height, the height and the base radius forms a right triangle with the slant height being the hypotenuse of this triangle
By Pythagoras’ theorem, the square of the hypotenuse (slant height) equals the sum of the squares of the two other sides
6.5^2 = 2.5^2 + h^2
h^2 = 36
h = √36
h = 6 cm
So we have the volume as;
V = 1/3 * pi * r^2 * h
where r in this case is base radius of 2.5 cm
V = 1/3 * pi * 2.5^2 * 6 = 39.3 cm^3
Related Questions
Justin has a savings account.
• He started with $70 in his account.
• He deposits $15 into the account each week.
What is the total amount Justin will have in his account after 10 weeks?
Answers
Answer:
220
Step-by-step explanation:
Multiply 15 times 10 =150
150+70=220
Hope this helps :)
==========================================================
Explanation:
After 10 weeks, he'll deposit a total of 15*10 = 150 dollars on top of the $70 already in the account. This means the grand total is 150+70 = 220 dollars
If you need to use algebra, then an algebraic expression you can use is 70+15x where x is the number of weeks. Replace x with 10 and you'll end up with 70+15*10 = 70+150 = 220. It's effectively the same idea and steps as the previous paragraph, but now we're involving a variable.
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Answers
Answer:
-15u²
Step-by-step explanation:
[tex]-(4+11)u^{2} \\-15u^{2}[/tex]
same exponent so it can be added together
irjiogergtjroigjeriogjergoiejoi
↓
Answers
Answer:
dsefggrgrgrgersd
Find the value of n that satisfies 2(n+1)! + 6n! = 3(n+1), where $n! = n\cdot (n-1)\cdot (n-2) \cdots 2\cdot 1$.
Answers
Answer:
[tex]n = 5[/tex]
Step-by-step explanation:
Given
[tex]2(n+1)! + 6n! = 3(n+1)![/tex]
Required
Find n
Simplify (n + 1)!
[tex]2(n+1)*n! + 6n! = 3(n+1)*n![/tex]
Factorize
[tex]n![2(n+1) + 6] = 3(n+1)*n![/tex]
Divide both sides by n!
[tex]2(n+1) + 6 = 3(n+1)[/tex]
Open brackets
[tex]2n + 2 + 6 = 3n + 3[/tex]
[tex]2n + 8 = 3n + 3[/tex]
Collect like terms
[tex]2n - 3n = 3 -8[/tex]
[tex]-n =-5[/tex]
Multiply both sides by -1
[tex]n = 5[/tex]
Priya has completed 9 eczema questions.THis is 60% of the questions on the exam? how many questions are on the exam?
Answers
Answer:
15 questions
Step-by-step explanation:
9x100=900
900/60=15
9/15=60%
plz mark me as brainliest.
Find the area of the following figure.
252 [tex]cm^{2}[/tex]
400 [tex]cm^{2}[/tex]
312 [tex]cm^{2}[/tex]
300 [tex]cm^{2}[/tex]
Answers
Answer:
312 cm²
Step-by-step explanation:
The figure is composed of a rectangle and 2 congruent triangles
area of rectangle = 16 × 12 = 192 cm²
area of 2 triangles = 2 × [tex]\frac{1}{2}[/tex] × 12 × 10 = 12 × 10 = 120 cm²
Area of figure = 192 + 120 = 312 cm²
answer quick please look at attachment.
Answers
Answer:
c) KJ and JH
Step-by-step explanation:
Answer:
lowkey gonna say B
Step-by-step explanation:
shshevr fcfvdbd
PLEASE HELP GIVING BRAINLEST
Answers
Answer:
Step-by-step explanation:
1. 34
2.12
3. 45
I need help on this question please
Answers
Answer:
168 sq inches
Step-by-step explanation:
SA = 2(1.5x6) + 2(1.5x10) + 2(6x10)
= 2(9) + 2(15) + 2(60)
= 18+30+120
= 168 sq inches
Find the gradient of the line passing through the points (4a,-a) and (6a,5a)
Answers
Answer:
The gradient of the line passing through the points (4·a, -a) and (6·a, 5·a) is 3
Step-by-step explanation:
The gradient of a (straight) line given the 'x' and 'y' coordinates of two points on the line, (x₁, y₁), and (x₂, y₂) can be found using the following formula;
[tex]The \ gradient \ of \ a \ line, \, m =\dfrac{y_{2}-y_{1}}{x_{2}-x_{1}}[/tex]
The coordinates of two points on the given line are;
(4·a, -a), and (6·a, 5·a)
Therefore, we get;
[tex]The \ gradient \ of \ the \ line =\dfrac{5\cdot a-(-a)}{6 \cdot a-4 \cdot a} = \dfrac{6\cdot a}{2 \cdot a} = 3[/tex]
The gradient of the line = 3.
10/b10=6/b-2 solve for b pls
Answers
Order the numbers by value.
LEAST to GREATEST
10
√99
√75
9
9.5
Answers
Answer:
√75, 9, 9.5, √99, 10
Step-by-step explanation:
that's what I got
A truck that can carry no more than 7600 lb is being used to transport refrigerators and upright pianos each refrigerator weighs 250lb and each piano weighs 425 lb. Write and graph an inequality to show how many refrigerators and how many pianos the truck could carry. Will 13 refrigerators and 11 pianos overload the truck? Explain.
Answers
Answer:
Step-by-step explanation:
7600 ≥ 250r+425p
7600 ≥ 250(13)+425(11)
7600 ≥ 3,250+4675
7600≥7925
This statement is incorrect. Therefore no, the truck cannot transport that load
4(x+15) = 2(2x+25) has how many solutions?
Answers
Answer: There are no solutions.
Step-by-step explanation: Hope this help :D
The are of a rectangular trampoline is 112ft. The length of the trampoline is 6ft greater than the width of the trampoline. This situation can be represented by the equation x^2+6x-112=0 what is the width of the trampoline in feet
Answers
Answer:
8cm
Step-by-step explanation:
let x = width
x^2+6x-112=0
we would solve this using the factorization method
the factors of -112x^2 that would add up to 6x are 14x 8x
x^2 - 8x + 14x - 112 = 0
factorise
x(x - 8) + 14(x - 8) = 0
x+ 14 = 0
x - 8 = 0
x = 8
the width is 8cm
x = -14
An 80–calorie apple is 4% of jeremy’s daily caloric intake. What is Jeremy’s daily caloric intake?
Answers
Answer:
3.2 calories
Step-by-step explanation:
4% is .04
so
80 x .04 = 3.20
Calculate each value for ⊙P. Use 3.14 for and round to the nearest tenth.
Answers
Find the profit or loss if:
Cost price = $250 Selling price = $325
also state wether it’s a profit or loss
Answers
Answer:
moncy soup ñomi
Step-by-step explanation:
63=a-=
Find the area of the shaded sector of the circle. no links
Answers
Answer:
706.86m
Step-by-step explanation:
Square the radius, then multiply by pi.
Show that f(x) = x^2 and g(x) = 1000x^2 grow at the same rate.
Answers
f(x) = x2
f'(x) = 2x
g(x) = 1000x2
g'(x) = 2000x
f'(x) ≠ g'(x)
f(x) and g(x) DO NOT grow at the same rate.
Answer:
You do not use the first derivative to find the rate you need to take the limit ratio as x approaches positive infinity. We use positive and not negative infinity because our function is increasing and not decreasing. The ratio ends up being 1/1000 meaning that this a finite non zero number. Which proves that they grow at the same rate
Step-by-step explanation:
what is the a, b, and c of the following quadratic y = - 4x ^ 2 + 5x - 3
Answers
Answer:
A = -4
B = 5
C = -3
Step-by-step explanation:
Standard form of a quadratic equation is y = Ax² + Bx + C
In the quadratic y = -4x² + 5x - 3, we can use this standard form to find A, B, and C.
Since -4 is the coefficient to x², A is -4.
Since 5 is the coefficient to x, B is 5.
Lastly, since -3 is the last term, C is -3.
So, the answer is:
A = -4
B = 5
C = -3
Continent
Number of cars produced
Africa
636 519
Asia/Oceania
45 800 878
Europe
19 726 405
North America
21 136 313
South America
4 288 654
How many more cars were produced in North and South America
than in Europe and Africa?
Answers
Answer:
5062043
Step-by-step explanation:
add the numbers for north and south America, add the numbers for Europe and Africa, and than subtract them. (north America+south America) - (Europe + Africa) = answer
7.5% of what number is equal to 85% of 200?
Help
Answers
Name the two values the square root is in between.
50
a 2 and 3
b 5 and 6
C 7 and 8
d 10 and 11
Answers
plzzzzz help now plzz
Answers
Which inequality is true?
3/4 > 12/16
5.6 ≥ 6/5
-2/3 < -7
5 < 6/7
Answers
Answer:b
Step-by-step explanation:
find the missing number so that the equation has no solutions
__x+6 = 2(-3x + 1) + x - 16
Answers
Answer:
-5
Step-by-step explanation:
-5x+6 = 2(-3x + 1) + x - 16
-5x+6 = -6x + 2 + x - 16
-5x+6 = -5x -14
+6≠-14⇒x∈Ф
PEOPLE YOU ARE SMARTER THAN ME HELP
Answers
Answer:
1/2
Step-by-step explanation:
Answer: 1/2
length of A is 6 units
length of B is 3 units
dilated / original
3/6 simplified is 1/2
ILL BRAINLIEST YOU IF YOU GET IT RIGHT
WHICH DIAGRAM SHOWS A PAIR OF ANGLE MEASURE THAT PROVIDES LINES c and d are parallel?
Answers
Answer:
It's C.
Explanation:
I took a test on this
What is the answer to this AND WHY!
(−1+√5)/2
Answers
Answer:
Square root: sqrt(5) = √ 5 = 2.23606798
Add: -1 + the result of step No. 1 = -1 + 2.23606798 = 1.23606798
Divide: the result of step No. 2 / 2 = 1.23606798 / 2 = 0.61803399nation: