Answer:
616 cm²
Step-by-step explanation:
To find the area of a circle you use the formula A = π · r²
So we know that the diameter is 28 cm, to find the radius we would divide this in half, because d = 2r, giving us 14. Now we can do 14² which is 196, and then times that by pi or in this case 22/7.
196 × (22/7) = 616
Answer:
616 square centimeters
Step-by-step explanation:
Diameter of circle = 28 centimeters
π = 22/7
Area of a circle, A = π [tex]\frac{D^{2} }{4}[/tex]
A = [tex]\frac{22}{7}[/tex] * [tex]\frac{28^{2} }{4}[/tex]
A = [tex]\frac{22}{7^{1} }[/tex] * [tex]\frac{(4 * 7)^{2} }{4}[/tex]
A = [tex]\frac{22}{7^{1} }[/tex] * [tex]\frac{4^{2} *7^{2} }{4}[/tex]
A = 22 * 28
A = 616 square centimeters
Help me this is important
So the answer is of option D.
What is the simplified form of 3 and the square root of 135?
Answer: do u still want to know this or not
Step-by-step explanation:
Please help fast!!!!!!!
Answer:
A
Step-by-step explanation:
because 1/9^2 is also 9^-2 because when it is a negative exponent it turns into a fraction. it does this because it is negative and the negative is equal to the number of one with the exponent positive
Emily and Lydia go to the movie theater and purchase refreshments for their friends. Emily spends a total of $78.50 on 2 bags of popcorn and 8 drinks. Lydia spends a total of $89.50 on 4 bags of popcorn and 7 drinks. Write a system of equations that can be used to find the price of one bag of popcorn and the price of one drink. Using these equations, determine and state the price of a drink, to the nearest cent.
The price of one drink is $7.5
The price of one bag of popcorn is $9.25
Step-by-step explanation:
Let us assume,
The price of one bag of popcorn = xThe price of one drink = yEmily spends a total of $78.50 on 2 bags of popcorn and 8 drinks.
⇒ 2x + 8y = 78.5 -------(1)
Lydia spends a total of $89.50 on 4 bags of popcorn and 7 drinks.
⇒ 4x + 7y = 89.5 --------(2)
To solve for x and y values :
Multiply eq (1) by 2 and subtract eq (2) from eq (1),
4x + 16y = 157
- (4x + 7y = 89.5)
9y = 67.5
⇒ y = 67.5/9
⇒ y = 7.5
∴ The price of one drink is $7.5
Substitute y = 7.5 in eq (1),
⇒ 2x + 8(7.5) = 78.5
⇒ 2x + 60 = 78.5
⇒ 2x = 78.5 - 60
⇒ 2x = 18.5
⇒ x = 18.5/2
⇒ x = 9.25
∴ The price of one bag of popcorn is $9.25
425/3333 is it. A rational number
Answer:
Yes
Step-by-step explanation:
Any number which can be written as a fraction of integers, is rational
Why is the answer c and not 7?
Answer:
You have to C or clear the calculator first
Step-by-step explanation:
Some other randum number is there. So you have to press C or clear and then type the problem
mark brainliest plz
Answer:
the answer is C
Step-by-step explanation:
because you have clear the calculator's memory of any operations that has been performed prior to this new operation
Can soembody help me answer this please. PLEASE BE QUICK AND RIGHT !!!
Answer:
A, D, and G
Step-by-step explanation:
Let's try each of the answer choices, one by one.
A) Plug x = 2 into each expression and see what we get.
7x + 4 = 7 * 2 + 4 = 14 + 4 = 18
3x + 5 + 4x - 1 = 3 * 2 + 5 + 4 * 2 - 1 = 6 + 5 + 8 - 1 = 18
Since they're both 18 when x = 2, A is true.
B) The statement says that the expressions are only equal for x = 4 and x = 8, but as we saw from A, they're also equal when x = 2, so B is wrong.
C) Let's try to find a counterexample for this by plugging in an odd number into each expression, like 1:
7x + 4 = 7 * 1 + 4 = 7 + 4 = 11
3x + 5 + 4x - 1 = 3 * 1 + 5 + 4 * 1 - 1 = 3 + 5 + 4 - 1 = 11
We see that these two expressions are equivalent when x = 1, which is an odd number, so this contradicts the statement that they're only equal when x is even. C is wrong.
D) Let's combine like terms for the expression 3x + 5 + 4x - 1:
3x + 4x + 5 - 1 = 7x + 4
Notice that this is the exact same expression as the first one, which is 7x + 4 so that means for any x, these two expressions will always be the same. D is thus true.
E) This is not true because it's possible that two expressions aren't equivalent but have the same value for a certain odd number and a certain even number. E is incorrect.
F) Obviously, if the two expressions are equivalent, they will give the same answer for any input of x, including when x = 0, so F is wrong.
G) Again, the two expressions will always be equal, including when x = 8, so this statement is true.
The answers are A, D, and G.
Hope this helps!
Answer:
Statement 1
Statement 4
Statement 7
Step-by-step explanation:
(1) 7x + 4
(2) 3x + 5 + 4x - 1 = 7x + 4
The two are identical hence equivalent for all x
what is the domain of 0.0008x^5-0.0054x^4-0.1588x^3+1.0691x^2+4.7635x-26.4458
Answer:
[-infinity,infinity]
Step-by-step explanation:
If you look at the graph, the domain keeps going on forever and ever on both sides...
What is the area of this trapezoid?
b2 = 5 in.
h = 4 in.
3 in.
2 in.
-b. = 10 in.
Answer: 30
Step-by-step explanation:
you have five $1 bills, four $5 bills, six $10 bills, and three $20 bills you select a bill at random, without replacing the bill what is the probability of a 1 then a ten?
a.11/35
b.5/51
c.5/54
d.193/306
Answer:
Option B.
Step-by-step explanation:
It is given that,
Number of $1 bills = 5
Number of $5 bills = 4
Number of $10 bills = 6
Number of $20 bills = 3
So,
Total number of bills = 5 + 4 + 6 + 3 = 18
We need to find the probability of a 1 then a ten (without replacement).
Probability of selecting $1 bill in first draw [tex]=\dfrac{5}{18}[/tex]
After one draw, the number of remaining bills is 18 - 1 = 17.
Probability of selecting $10 bill in second draw [tex]=\dfrac{6}{17}[/tex]
The probability of a 1 then a ten is
[tex]P=\dfrac{5}{18}\times \dfrac{6}{17}=\dfrac{5}{51}[/tex]
Therefore, the correct option is B.
One cent is equal to what fraction of a dollar?
Answer:
1/100
Step-by-step explanation:
Since there are 100 cents in a dollar, and you are being asked to compare that to a cent.....
One cent=1
Dollar=100
1/100
It's equal to 1/100 of a dollar because it takes 100 pennies to make 1 dollar.
Identify the equation of the circle D with center D(−8,−1) and radius 3.
Answer:
(h+8)^2 + ( y +1)^2 = 9
Step-by-step explanation:
The equation of a circle can be written as
(x-h) ^2 +(y-k) ^2 = r^2
where (h,k) is the center and r is the radius
(h- -8)^2 + ( y - -1)^2 = 3^2
(h+8)^2 + ( y +1)^2 = 3^2
(h+8)^2 + ( y +1)^2 = 9
Answer:
(x + 8)² + (y + 1)² = 9
Step-by-step explanation:
Equation of a circle
(x - h)² + (y - k)² = r²
(x - -8)² + (y - -1)² = 3²
(x + 8)² + (y + 1)² = 9
what is 2 x 2 =
PLEASE HELP
Answer:
4
Step-by-step explanation:
Answer: 4
because 2 times 2 is just like 2 plus 2
Use the elimination method to solve the system of equations. Choose the
correct ordered pair.
3x + 5y = 48
-3x+ 5y = 12
Answer: x=6
Y=6
Step-by-step explanation:
Using the elimination method
3x+5y=48.....equ1
-3x+5y=12......equ2
Add equation 1 &2
3x+5y=48
+
-3x+5y=12
Answer =
10y=60
Y=60/10
Y=6
Substitute for y in equation 1
3x+5y=48
3x+5(6)=48
3x+30=48
3x=48-30
3x=18
X=18/3
X=6
Therefore,
X= 6
Y= 6
Answer: x=6
Step-by-step explanation:
Let's solve your system of equations by elimination.
3x+5y=48;−3x+5y=12
Steps:
3x+5y=48
−3x+5y=12
Add these equations to eliminate x:
10y=60
Then solve
10y=60
for y:
10y/10=60/10
(Divide both sides by 10)
y=6
Now that we've found y let's plug it back in to solve for x.
Write down an original equation:
3x+5y=48
Substitute
6 for y in 3x+5y=48:3x+(5)(6)=48
3x+30=48
(Simplify both sides of the equation)
3x+30+−30=48+−30
(Add -30 to both sides)
3x=18
3x/3=18/3
(Divide both sides by 3)
x=6
Please help it’s irritating when I keep having to post this and no ones bothering to even help me. Like I need to turn this is ASAP
Measure of E is congruent to K, so E is 50 degrees.
Measure of G is congruent to L, so G is 105 degrees.
Measure of F is congruent to J, J is 180 deg - 50 deg - 105 deg = 25 degrees, so F is 25 degrees.
The proof I am using is the Corresponding Angles Postulate.
I NEED BRAINLIEST!
PUDICII
In the figure below, the radius of circle P is 18 units. The arc length of BA is
14.
What is the arc measure of BC, in degrees?
Answer:
The arc measure of BC is 64
Step-by-step explanation:
1. Calculate the full circumference of the circle
C=2pir
=2pi(18)
=36pi
2. Figure out the arc measure
arc length/circumference=arc measure/degrees in a circle
14pi/36pi=arc measure/360 (solve for arc measure)
14pi/36pi *360=140
The measures of BC and CA add up to the measure of BA
mBC +76=140
BC=64
when quentinordered a tennis racket recently, he agreed to pay 7% shipping and handling charge. If quentin paid $9.45 in shipping and handling, how much must the racket have cost? (show your work)
PLEASE HELP ME
Answer:
$8.79
Step-by-step explanation:
9.45 × 0.07 = 0.6615
9.45 – 0.6615 = 8.7885
Round 8.7885 to the nearest tenth, 8.79
Plz help
What is the median value of the data set shown on the line plot?
Enter your answer in the box.
Answer:
30
It's thirty because median is the middle of all numbers, and thirty is the middle of all numbers.
A dartboard has 3 equal sections. A player gets 2 throws. If he misses the dartboard he gets 0 points. His final score is the sum of the points he receives on both throws. How many different point totals are possible?
Answer:4
Step-by-step explanation:
plsss help asap it would meannn alotttt
plss and tyyy
Answer:
Bottom left graph
Step-by-step explanation:
Since the y-coordinates are the same, but the x-coordinates are opposites, it is a reflection across the y axis.
Therefore, the bottom left graph is correct.
Answer: The Bottom Left Graph
Step-by-step explanation:
The Y coordinates are the same number, therefore, when you find the coordinates of the points, the y must be equal, making them the same height on a graph. The X coordinates on the graph must be opposites, therefore, the two dots have to be equidistant from the Y axis. The only graph that has two dots at the same height and is equidistant from the Y axis is the graph at the bottom Left Corner.
Need help plz!!!
What is the correct answer in terms of pi
Answer:
volume of a cone = 2.82πinches³( nearest hundredth)
Step-by-step explanation:
given that the diameter of a cone = 2 3/8
diameter = radius x 2
radius = diameter /2
radius = 19/8/2 = 1.1875
height of the cone = 6inches
volume of the cone = ?
recall that the formulae for calculating the volume of a cone = πr² h/3
volume of a cone = πr² h/3
volume of a cone = π (1.1875)² x 6/3
volume of a cone = π1.410 x 2
volume of a cone = 2.8203πinches³
volume of a cone = 2.82πinches³( nearest hundredth)
Jessica is playing a board game and uses a number cube to determine how many spaces she can move for each turn.
What is the likelihood of Jessica rolling a 2 on her next turn?
explain
Answer: 1 out of 6
Step-by-step explanation: A number cube has 6 numbers on it. Only one of them is a two. If she were using two number cubes then she would have 2 out of 12 chances of landing on a number 2.
Please help with somewhat some work.
Answer:
x+11
Step-by-step explanation:
explain if you can please and thank you
Answer:
28
Step-by-step explanation:
2y+12=3y-16
12=y-16
y=28
Given a triangle with side lengths of a, b, and c, where c is the longest side, which statement is true?
If b2 + c2 = a2, then the triangle is a right triangle.
If a2 + c2 = b2, then the triangle is a right triangle.
If a2 + b2 =c2, then the triangle is a right triangle.
If a2 = b2 = c2, then the triangle is a right triangle.
Answer:
It is C. If a2 + b2 =c2, then the triangle is a right triangle.
Step-by-step explanation:
If a triangle has side lengths a, b, and c, where c is the longest side, then the statement "If a2 + b2 = c2, then the triangle is a right triangle", the correct option is C.
What is the Pythagoras theorem?The Pythagoras theorem states that the square of the longest side must be equal to the sum of the square of the other two sides in a right-angle triangle.
|AC|^2 = |AB|^2 + |BC|^2
We are given that;
Sides of triangle are a, b and c
Now,
This statement is known as the Pythagorean Theorem, which states that in a right triangle, the sum of the squares of the lengths of the legs (a and b) is equal to the square of the length of the hypotenuse (c).
Conversely, if a triangle satisfies the Pythagorean Theorem, then it is a right triangle.
Therefore, by Pythagoras theorem the answer will be a2 + b2 = c2, then the triangle is a right triangle.
Learn more about Pythagoras theorem;
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The surface area of a piece of paper is 137 cm2. Use the fact that 10 mm = 1 cm to convert this area to mm2. Give your answer as a number. Do not type the units in the space below.
Solution:
surface area of a piece of paper = 137 sq cm
Use the fact that 10 mm = 1 cm to convert this area to mm^2
[tex]1\ cm = 10\ mm[/tex]
Then,
[tex]1\ cm^2 = 100\ mm^2[/tex]
Convert 137 sq cm to sq mm
[tex]137\ cm^2 = 137 \times 100\ mm^2\\\\137\ cm^2 = 13700\ mm^2[/tex]
Thus, surface area of a piece of paper is [tex]13700\ mm^2[/tex]
To convert the surface area of a piece of paper from cm² to mm², use the conversion factor 1 cm² = 100 mm².
Explanation:To convert the surface area of a piece of paper from square centimeters (cm²) to square millimeters (mm²), we can use the conversion factor that 10 mm = 1 cm. Since we are given the surface area as 137 cm², we can multiply it by the conversion factor to get the value in mm².
Conversion factor: 1 cm² = (10 mm)² = 100 mm²
Therefore, the surface area of the paper in mm² is 137 cm² x 100 mm²/cm² = 13700 mm².
is line AB tangent to circle below
Answer:
Yes, Line AB is tangent to the circle.
Step-by-step explanation:
Evaluate the expression. (15 + 6) divided by three
Answer:
7
Step-by-step explanation:
15+6=21/3=7
what is (x+3)(x-1) equal to
Answer:
x² + 2x - 3
Step-by-step explanation:
Given
(x + 3)(x - 1)
Each term in the second factor is multiplied by each term in the first factor, that is
x(x - 1) + 3(x - 1) ← distribute both parenthesis
x² - x + 3x - 3 ← collect like terms
= x² + 2x - 3
Answer:
x^2+2x−3
Step-by-step explanation:
lets use the multiplication property of distrubution.
x * x = x^2
x * -1 = -x
(x+3)(x−1)
=(x+3)(x+−1)
=(x)(x)+(x)(−1)+(3)(x)+(3)(−1)
=x2−x+3x−3
=x^2+2x−3
brainliest?
KHD M D CM
2.5 L = [?] ml
Enter
Answer: 0.0025ml
Step-by-step explanation: