Answer:
Step-by-step explanation:
outer area=
first need to find the circumference of outer diameter
= π×4.8
= 15.079644.... cm
to find the outer curved area you would then do
= 77×15.079644
(ii) =1161.13264 cm²
inner curve area
circumference= π×4
=12.5663706.... cm
77×12.5663706
(i) =967.610537 cm²
total surface area=
as the outer and inner curved areas are already found only the top and bottom surfaces need to be
= area of larger circle
=π×4.8²
=72.382294.... cm²
smaller circle
=π×4²
=50.2654824.... cm²
72.382...-50.265
=22.1168116 x 2
=44.2336232 cm²
total surface area
(iii)= 2172.9768 cm²
(round this to however many decimals you need)
I hope this is understandable and useful!
also how many marks is this for?
© Solve the simultaneous equations
-3x + y= – 8
3x + 2y = – 13
X =?
y =?
Answer:
x=1/3
y=-7
Step-by-step explanation:
using the elimination method, you can add both equations vertically, to eliminate the x
-3x+y=-8
3x+2y=-13
3y=-21
y=-7
we then fix the value of y into the first equation
-3x+y=-8
-3x-7=-8
-3x=-8+7
-3x=-1
x=1/3
Describe and correct the error shown to the right that a student made when writing a recursive formula from an explicit formula. Picture below shows the explicit formula and the incorrect recursive formula.
Just kidding.
now help me for 100 points.
someone please help me ASAP!!!!!!! Show work pleaseeeee
Answer:
vv
Step-by-step explanation:
[tex]6^{2} +2^{2} =c^{2} \\36+4=c^{2} \\40=c^{2} \\\sqrt{40} =c\\c=6.32[/tex]
Answer:
Square root of 40, I don't know what the brace is
Step-by-step explanation:
To find side c, you have to use the Pythagorean theorem. A^2+B^2=C^2. In this case A and B are 6 and 2. This means the equation would be 6^2+2^2=C^2. Simplify this to get 36+4=C^2. Add 36 and 4 to get 40. 40=C^2. This would mean that it is square root of 40.
Can this be reduced?
a. 2 - 4 x 6 + 8 + 2 =
b. 6 + 2 x 4 - 8 + 10 =
The answer would be
A.) ~-12~
because 2-24=-22 -22+8+2=-12
B.)~16~
because 6+8-8+10 and -8+8=0 so 6+10=16
Hope this helps
Have a great day/night
Feel free to ask any questions
tha co-efficient of correlation is independent of
Answer:
change of scale and origin of the variable X and Y.
What is the sign of 9.(-0.5)?
a: postive
b:negative
c: zero
Answer:
Negative
Step-by-step explanation:
Answer:
B. Negative
Step-by-step explanation:
Hope it is helpful...
w + 15 = 29
w=___ ?? HELP
Answer:
w=14
Step-by-step explanation:
29-15=14
Answer:
14
Step-by-step explanation:
29-15 =14.
The answer is 14
3. Sandi is making curtains for her bedroom. She needs 58 feet of fabric. She has 14 yards of fabric. How many more yards of fabric does she need?
Answer:
she needs 3 1/3 more yards
Step-by-step explanation:
There are 3 feet in a yard
14yards x 3feet = 42 feet
58 feet- 42 feet= 10 feet
10 divded by 3 is about 3.3
Answer: 6 yards
Step-by-step explanation:
1) 14 x 3 = 42
2) 58 - 42 = 16
3) 16 / 3 = 5.33333333....
4) round up = 6
Write an equation for the nth term of the geometric sequence 5,30,180,1080
Answer: [tex]a_{n}[/tex]=5*[tex]6^{n-1}[/tex]
Step-by-step explanation:
2(2x2 + 3) =
Example how you got the answer
Answer:
22
Step-by-step explanation:
4x4+6
16+6
=22
Answer:
14
Step-by-step explanation:
i used pemdas so fist i multiplied 2x2 then added 3 them multiplied 7 with 2 which gets us 14.
A person is looking from a car to the top of a building. The angle of elevation to the top of the building from the car is 32°. The building is 200 feet away. How tall is the building? Round to the nearest foot.
What is 1.5^3 evaluated or to make it easier to understand if you don't know what 1.5^3 is then it means what is 1.5 to the power of 3 evaluated?
6TH GRADE MATH
Answer:
3.375
Step-by-step explanation:
what is 85 in simplest radical form?
Answer:
=√85 is the simplified radical
Need help on Number 6
Answer:
area of triangle=1/2 (base×height)=1/2 (7×11)=38.5cm²
20. Given the area, find the side length.
Answer:
Step-by-step explanation:
Area of a square = 49a⁸b¹⁰
Side = √49a⁸b¹⁰
= √7²*(a⁴)²*(b⁵)²
= (7a⁴b⁵)²
Side = 7a⁴b⁵
Write an equation to represent 'twice a number (x) is fifty"
Answer:
2x=50
Step-by-step explanation:
Hi there,
Your question is "twice a number (x) is fifty"
Recall how a number is represented by x.
Twice a number would be represented as 2x.
Therefore, to represent that twice a number is equal to 50, that would result in the expression: [tex]2x=50[/tex]
If you're looking to solve this equation, it's often best to think about the "reverse" of the current equation.
Notice how 2 is multiplying the x.
To isolate x, divide that side by 2.
However, recall that whatever is done to one side of an equation must also be done to the other side of the equation. Therefore, you will need to divide both sides by 2.
[tex]2x=50[/tex]
[tex]\frac{2x}{2} = \frac{50}{2}[/tex]
[tex]x=25[/tex]
Equation: [tex]2x=50[/tex]
Solving for x: 25
Hope that helps!
10. Determine the value of x.(its trig)
Answer:
whats the equation?
Step-by-step explanation:
Braxton has money in a savings account. The equation B = 800(1+0.03)'.
can be used
to calculate the amount of money in dollars, B, Braxton has in his account after t years since
opening the account.
Pam also has money in a savings account. The equation P = 800(1 + 0,04) can be
used to calculate the amount of money in dollars, P, Pam has in her account after t years
since opening the account.
Choose from the drop down menus to correctly complete each sentence.
Braxton's initial investment Choose...
Pam's initial investment.
The interest on Braxton's account Choose...
the interest on Pam's account.
Answer:
a) Braxton's initial investment is equals to (=) Pam's initial investment.
b)The interest on Braxton's account is less than (< ) the interest on Pam's
account.
Step-by-step explanation:
Given - Braxton has money in a savings account. The equation
B = [tex]800(1 + 0.03)^{t}[/tex] can be used to calculate the amount of money
in dollars, B, Braxton has in his account after t years since opening
the account. Pam also has money in a savings account. The
equation, P= [tex]800(1 + 0.04)^{t}[/tex] can be used to calculate the amount of
money in dollars, P, Pam has in her account after t years since
opening the account.
To find - a) Braxton's initial investment ..........Pam's initial investment.
b) The interest on Braxton's account .....the interest on Pam's
account.
Proof -
As given, Broxton equation is -
Pam equation is -
Now,
a.)
For initial investment , Put t = 0
⇒B = [tex]800(1 + 0.03)^{0} = 800(1) = 800[/tex]
P = [tex]800(1 + 0.04)^{0} = 800(1) = 800[/tex]
We can see that for t = 0
Initial investment of Braxton = Initial investment of Pam
⇒Braxton's Initial investment = Pam's initial investment.
b.)
For the interest,
As we have not given any time period for which the interest has to be find.
So , let the time period , t = 5 years
Therefore,
B = [tex]800(1 + 0.03)^{5} = 800(1.03)^{5} = 800(1.159) = 927.42[/tex]
P = [tex]800(1 + 0.04)^{5} = 800(1.04)^{5} = 800(1.217) = 973.32[/tex]
Now,
Interest on Braxton's account = 927.42 - 800 = 127.42 ≈ 127
Interest on Pam's account = 973.32 - 800 = 173.32 ≈ 173
∴ we get
The interest on Braxton's account is less than the interest on Pam's account.
write 12 as a product of its prime factors
Answer:
the Prime Factors of 12 are: 2, 2, 3.
Step-by-step explanation:
Therefore 12 = 2 X 2 X 3.
Function f is defined by the equation f(x) = x2 1. What is f(2) ?
Answer:
42
Step-by-step explanation:
So you basically replace the x with 2. So f(x) = x21, then it would change to f(2) = 2(21). Then you would just multiply 21 by 2 and you would get 42.
Hope this helps!
Answer:
f=x21=x2f(2)=4
Step-by-step explanation:
To solve the inequality 4x < 8, you would divide both sides of the inequality by 4.
True
False
Answer:
True
Step-by-step explanation:
4x<8
divide
x<2
1 hour 20 mins = _____ seconds
Plz help me
Answer:
4800
Step-by-step explanation:
multiply the time value by 3600
A figure has an area of 64 square units. Which describes the area of the figure after a dilation with a scale factor of 3/2?
A)96 square units
B)144 square units
C)112 square units
D)32 square units
Someone help me I don’t understand !
Answer:
2. -8x - 6
3. 4.5x + 10 (I think, not quite sure)
4. 0.25 - 5x (I think, also not quite sure)
5. -8x - 5y + 5.5
Step-by-step explanation:
2. Distribute the -2 to all terms except -1.
-2(4x + 2.5) - 1
-8x - 5 -1
-8x - 6
5. Combine 6x and -14x (6 - 14 = -8).
6x - 5y - 14x + 5.5
-8x - 5y + 5.5
What is the solution to the equation 2x + 4 = 23x?
Answer:
i think its 2
Step-by-step explanation:
Determine the 10th term of the sequence –17, -13,-9, ...
A. 19
B. -53
C. 36
D. 53
Answer:
-53 (answer : B)
Step-by-step explanation:
hello :
this the arithmetic sequence because :
(-9)-(-13)=(-13)-(-17)= 4 (common difference)
the first term is : A1 = -17
the nth term of an arithmetic sequence is :
An= A1 +(n-1)d ....a common difference is : d
the 10th term is : A10
A10= -17 +(10-1)(4) = -17-36 = -53 (answer : B)
A custom t-shirt company charges a $200 setup fee and $5 per t-shirt. Write an equation that can be used to determine how many t-shirts must be produced so that the total cost per t-shirt is $5.33?
A. (200+5x)/x =5.33
B. (200/x) +x = 5.33
C (200) + 5/x = 5.33
200 + 5x = 5.33/x
Answer:
its a
plz brainlest
Step-by-step explanation:
differentiate with respect to x:
log(cosx +sinx)
Sam needs a web designer. Designer A is offering her services for an initial $550 in addition to $105 per hour. Designer B is offering her services for an initial $660 in addition to $50 per hour. When will the two designers charge the same amount of money?
The two designers will charge the same amount of money after
hours
