Step-by-step explanation:
The formula for the circumference of a circle is 2*pi*radius
Circumference = 2(3.14)(2.1)
= 13.188cm
AMC 10/12 Student Practice Questions
Guide to Student Practice Questions
Each of the following four large congruent squares is
subdivided into combinations of congruent triangles or
rectangles and is partially shaded. What percent of the total
area is partially shaded?
I
The original problem
and choices from the
2011 AMC 8 contest
(A) 12 (B) 20
(C) 25 (D) 33 (E) 37
Answer:
[tex]\mathrm{C.\:}25[/tex]
Step-by-step explanation:
Notice how each congruent square is divided into four equal parts. Since each square has four parts and there are four squares, there are [tex]16[/tex] of these parts in total. Because each of these parts make up [tex]\frac{1}{4}[/tex] of each square, all parts are equal. Therefore, you can count the total number of shaded parts to get your percentage.
The top left and bottom right both have one part shaded each for a total of [tex]2[/tex] parts.
The top right and bottom left have [tex]0.5[/tex] and [tex]1.5[/tex] parts shaded, respectively, for a total of [tex]2[/tex] parts.
Therefore, in total, there are [tex]2+2=4[/tex] parts shaded out of [tex]16[/tex] total parts.
Thus, the percentage of the total area that is shaded is:
[tex]\frac{4}{16}=\frac{1}{4}=\fbox{$25\%$}[/tex].
A museum recorded that it had 988 visitors in 4 hours. What is the unit rate in visitors per hour?
A.). 222
B.) 247
C.). 249
D.). 262
Simplify the Expression
Answer:
[tex]125a^{3}b^{2}[/tex]
Step-by-step explanation:
Find the measure of the indicated angle that makes line u and b parallel
Help me to find the slope and t-intercept please asap
Answer:
4/7x - 5 ________________________________________
What type of function is y=2^x +8
Answer:
y = 2ˣ + 8 represents the exponential function.
The graph of the function y = 2ˣ + 8 is also attached below.
Step-by-step explanation:
We know that the general exponential function is of the form
f(x) = aˣ
were a > 0
Given the function
y = 2ˣ + 8
Comparing with y = aˣ, it is clear that the function y = 2ˣ + 8 represents the exponential function.
where a = 2
We can also determine the y-intercept of y = 2ˣ + 8 by setting x = 0, and determining the corresponding value of y.
i.e.
y = 2ˣ + 8
y = 2⁰ +8 ∵ 2⁰= 1
y = 1+8
y = 9
Thus, (0, 9) represents the y-intercept of the exponential function y = 2ˣ + 8.
Therefore, y = 2ˣ + 8 represents the exponential function.
The graph of the function y = 2ˣ + 8 is also attached below.
A gym charges a one time sign-up fee of $10.25 and then $5 each time you go. A student paid a total of $137.25. How many times did the student go to the gym?
Answer:
25.4 or 25 times
Step-by-step explanation:
137.25-10.25=127
127/5=25.4
What is the length of segment AB?
A) 2
B)2.5
C) 5
D) 10
Which equation does the graph below represent?
Answer:
a
Step-by-step explanation:
i think its a
PLES HELP MEH
What's the point of intersection of the x-axis and y-axis on a coordinate plane?
A. Coordinate plane
B. Origin
C. Ordered pairs
D. Quadrants
Rewrite the following sentence as an equation.
The product of three and the sum of a number and
two is zero.
Answer:
3(2+x)=0
Step-by-step explanation:
Here are some vocab words:
Product: Multiplication
Sum: Addition
"A number": x
3(2+x)=0
Your factory installed tires have a comfort that 95 inches if the odometer reading reading is 32,000 miles on your car you have tires with a conference have 103 inches how many miles have you actually traveled
Answer:
The correct solution is "35440.8".
Step-by-step explanation:
The given values are:
Bigger tire's circumference,
= 103 inches
Factor installed tire's circumference,
= 95 inches
Odometer reading,
= 32,000 miles
As we know,
⇒ [tex]Actual \ distance = K\times odometer \ reading[/tex]
Where,
⇒ [tex]K = \frac{Bigger \ tier \ circumference}{Factor \ installed \ tier \ circumference}[/tex]
i.e.,
⇒ [tex]K=\frac{103}{95}[/tex]
On applying the formula,
⇒ [tex]Actual \ distance \ travelled=\frac{103}{93}\times 32,000[/tex]
⇒ [tex]=35440.8[/tex]
can someone explain how to find the slope
Answer:
slope is rise over run. first select a point. I'll use (0,-1). to get to the next complete point, you would have to go up (rise) 3 points and right (run) 1 point. the rise over run (3/1) divides evenly to 3. hope this helps!
Solve for the missing angle
A. 121 degrees
B. 79 degrees
C. 111 degrees
D. 89 degrees
Please Help, I need to answer this ASAP and will automatically give brainliest
Answer:
12 and 18
Step-by-step explanation: since i helped can i have brainlist please :D
Ocean water freezes at about -2 1/2 so silly fresh water freezes at zero anti-freeze a liquid used in radiators of cars freeze at -64 imagine if the temperature has dropped to the freezing point for ocean water how many degrees more most the temperature Drop for the anti-freeze to turn solid
Answer:
Temperature needs to drop by 61.5°
Step-by-step explanation:
Given that:
Freezing temperature of ocean water = - 2.5
Freezing temperature of fresh water = 0
Freezing temperature = anti-freeze = - 64
If temperature has dropped to freezing point for ocean water, then current temperature = - 2.5
How many more degrees must the temperature drop for temperature to turn solid :
Freezing temperature of anti-freeze - current temperature
-64 - (-2.5)
-64 + 2.5
-61.5
-61.5(the temperature needs to drop by 61.5°)
Work out the percentage change when a price of £400 is decreased to £225
Answer:
1.77%.Step-by-step explanation:
The answer is 1.77%.
HOPE THIS IS CORRECT AND HELPS YOU!!!
Answer:
1.75%
Step-by-step explanation:
1.75%is correct answer
CRÍTICAL THINKING Can you use the Product of Powers Property to
multiply 5^2 x 6^4 ? explain
HELP Please
Answer:
The answer for that equation is 32400
Step-by-step explanation:
Answer:
No because their bases are not the same
Step-by-step explanation:
Can someone tell me what the answer is and how u solve it?
Answer:
y-6=-2(x-6)
y-6=-2x+12
y= -2x+6
6 is the line crossing on the y axis (B from y=mx+b)
and -2/1 is slope so 2 below and 1 right HOPE THIS HELPED
Step-by-step explanation: (IDC ABOUT THE THINGY HERE :D)
Which has a greater slope (Rate of change)?
the graph
the table
Answer:
The graph
Step-by-step explanation:
The graph has a slope of 2 while the table has a slope of 1.
2-1/6/5=1/1=1
2>1
Answer and will mark brainliest
Answer:
30
Step-by-step explanation:
(3x+10y=54 and x=y+5 )
Answer:
y=3 x=8
Step-by-step explanation:
The cost of a hamburger is $1.15 more than an order of large fries bill bought two hamburger ms and an order of large fries for a total of $8.60 what is the price of each item
Answer:
The cost of an order of large fries is [tex]\$ 2.10[/tex] and the cost of a hamburger is [tex]\$3.25[/tex].
Step-by-step explanation:
Let the cost of an order of large fries be [tex]\$ x[/tex].
Then, the cost of a hamburger is [tex]\$ x+\$1.15[/tex].
Bill bought two hamburgers and an order of large fries for a total of [tex]\$ 8.60[/tex].
So, [tex]2(x+1.15)+x=8.60[/tex]
[tex]\Rightarrow 2x+2.30+x=8.60[/tex]
[tex]\Rightarrow 3x=8.60-2.30[/tex]
[tex]\Rightarrow 3x=6.30[/tex]
[tex]\Rightarrow x=\frac{6.30}{3}[/tex]
[tex]\Rightarrow x=2.10[/tex]
So, the cost of an order of large fries is [tex]\$ 2.10[/tex].
And, the cost of a hamburger is [tex]\$2.10+\$1.15=\$3.25[/tex].
Hence, the cost of an order of large fries is [tex]\$ 2.10[/tex] and the cost of a hamburger is [tex]\$3.25[/tex].
Simplify
2x + x + x + 2y x 3yx y
Answer ?
Answer:
4x + 6y ...y cube
like y square y cube y3
Answer:
4x + 6y^3
Step-by-step explanation:
2x + x +x + 2y x 3y x y
4x + 6y^3
A laundry basket has 24 t shirts in it four are navy 12 are red and the remaining are white.what the probability of not selecting a white shirt
-3(3p-1)<7p+51 help plssss
Answer:
p > -3
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightEquality Properties
Multiplication Property of Equality Division Property of Equality Addition Property of Equality Subtract Property of EqualityStep-by-step explanation:
Step 1: Define
-3(3p - 1) < 7p + 51
Step 2: Solve for p
Distribute -3: -9p + 3 < 7p + 51Add 9p to both sides: 3 < 16p + 51Subtract 51 on both sides: -48 < 16pDivide 16 on both sides: -3 < pRewrite: p > -3Here we see that any value p greater than -3 would work as a solution to the inequality.
REALLY EASY MATHS QUESTION PLS HELP
(I think it easy lol)
Answer:
no.2 no.5
Step-by-step explanation:
i don't know how to explain
have a good rest of your day
Answer:
question (1) c^2=a^2+b^2
Step-by-step explanation:
pythagoras theorem
6th grade math!!!!!!!!!!
Answer:
Step-by-step explanation:
plug 20 in for c
f = 1.8(20) + 32
simplify
f = 36 + 32
f = 68
so 20 degress celsius is equal to 68 degrees farenheit
hope this helps <3
Answer:
60*F
Step-by-step explanation:
Y=-5x+4
-10-2(-5x+4)=12
Step-by-step explanation:
x=3
y=19
hope this helps if u need me to explain u can ask hope it helps
5 3/13 rounded to the nearest whole number
Answer:
it should be 5
Step-by-step explanation:
3/13 is smaller than 5.5 which would round up to 6, therfore is should be 5
Answer:
37
Step-by-step explanation: