Answer:
Step-by-step explanation:87
87
Rupert is copying some files from his computer to a compact disc, like the one shown above.
If the diameter of the compact disc is 120 millimeters, what is the approximate area ignoring the center hole? (Use 3.14 for pi.)
A.
376.8 mm2
B.
11,304 mm2
C.
753.6 mm2
D.
45,216 mm2
Option B: [tex]11,304 \mathrm{mm} ^2[/tex] is the area of the compact disc.
Explanation:
The diameter of the compact disc is [tex]120mm[/tex].
To determine the area of the compact disc, let us substitute the values in the area of the circle formula,
[tex]A=\pi r^2[/tex] where [tex]r=\frac{d}{2}[/tex]
Substituting the value of d in [tex]r=\frac{d}{2}[/tex], we get,
[tex]r=\frac{120}{2} =60[/tex]
Thus, [tex]r=60[/tex] and [tex]\pi=3.14[/tex]. Let us substitute these values in [tex]A=\pi r^2[/tex], we get,
[tex]A=3.14\times(60)^2[/tex]
Simplifying, we have,
[tex]A=3.14\times3600[/tex]
Multiplying, we get,
[tex]A=11304mm^2[/tex]
Thus, the area of the compact disc is [tex]11,304 \mathrm{mm} ^2[/tex]
Hence, Option B is the correct answer.
Which numbers are greater?
1.) 3/4 or 70%
2.) 1/2 or o.54
3.) 0.21 or 21%
4.) 2/3 or 66%
Answer:
1. 3/4
2. 54%
3. Both equal
4. Both equal
Step-by-step explanation:
Answer:
1.) 3/4
2.)0.54
3.) Both
4.) 2/3
Which of these statements are correct about a line segment with a length of 12 units in a coordinate plane? Select all that apply.
Correct statements are:
If it is reflected across the y-axis, its length still will be 12 units.
If it is rotated 270° about the origin, its length still will be 12 units.
If it is translated 15 units up, its length still will be 12 units.
Step-by-step explanation:
Whatever it may be rotation, reflection or translation, the size of the line will never change. So length of the line is same as 12 units in the image.
So the wrong statements are
If its reflected across y = -x then the length will no longer be 12 units.
If it is rotated 90° about the origin, then the length will no longer be 12 units.
If it is translated 18 units to the right, then the length will no longer be 12 units.
You can use the fact that reflection, rotation or translation, all three are not modifying the line itself and only its position can change. Whatever be the position, if the line segment itself isn't modified, the length will be same.
Thus, the correct choices are:
Option A: If it is reflected across the y-axis, the length will still be 12 units.Option B: If it is rotated 270° about the origin, its length still will be 12 units.Option E: If it is translated 15 units up, its length still will be 12 units.Rest of the choices are wrong since they blame reflection or rotation or translation to modify the length of that line segment.
Why is the length of a line segment not modified when it is reflected along an axis, rotated or translated by some units in some direction?Suppose you've got a baseball stick. Will it's length change when you take it somewhere else like from your home to playground? No. Will its length change if you hold it upside down? No.
This is the same case with line segment being rotated, reflected, or translated. All these processes do not change the line segment's length and can just move that line segment from one position to other.
Using above conclusion to find the correct options in the given contextSince reflection, rotation, or translation won't affect the length of the line segment,.
Thus, the correct choices are:
Option A: If it is reflected across the y-axis, the length will still be 12 units.Option B: If it is rotated 270° about the origin, its length still will be 12 units.Option E: If it is translated 15 units up, its length still will be 12 units.Rest of the choices are wrong since they blame reflection or rotation or translation to modify the length of that line segment.
Learn more about reflection, rotation and translation of line segment here:
https://brainly.com/question/17201260
Out of 25 attempts, a basketball player scored 17 times. One-half of the missed shots are what % of the total shots?
Answer:
%16
Step-by-step explanation:
Step 1: Find the shots missed
25 - 17 = 8
Step 2: Find half of the shots missed
8 / 2 = 4
Step 3: Divide 4 by 25
4/25 = 0.16
Step 4: Convert to Percent
0.16 * 100 = %16
Answer: %16
Which one is bigger 64 in or 5 ft
64 inches
Step-by-step explanation:
12 inches equals 1 foot so
12*5=60 inches which means it will be bigger than 5 feet.
What is the equation of the following line? Be sure to scroll down first to see
all answer options.
Answer: y=- 1/3x
Step-by-step explanation:
Solve 3(x - 2) < 18.
{x | x < 8}
{x | x > 8}
{x | x < -8}
{x | x > -8}
Answer:
3x - 6 < 18
3x < 24
x < 8
answer is a
I need help with pythagoras’ theorem
Answer:
Pythagoras’ theorem is a way to find a side or hypothesis when you have 2 sides.
The formula is: a^2 + b^2 = c^2
a and b are sides
c is the hypothesis
Ex: A triangle has a leg that is 5 inches and a leg that is 7 inches. Find the hypothesis using Pythagoras' theorem.
A leg is another way of saying a side.
5^2 + 7^2 = c^2
25 + 49 = x^2
sqrt(74) = sqrt(x^2)
sqrt(74) inches = hypothesis
Ex: A triangle has a leg that is 9 feet and a hypothesis that is 25 feet. Find the other leg using Pythagoras' theorem.
9^2 + b^2 = 25^2
81 + b^2 - 81 = 625 - 81
sqrt(b^2) = sqrt(544)
b = sqrt(554)
Do you understand more?
twenty is 150% of what number
13.33.
We have, 150% × x = 20
or,
150
100
× x = 20
Multiplying both sides by 100 and dividing both sides by 150,
we have x = 20 ×
100
150
x = 13.33
If you are using a calculator, simply enter 20×100÷150, which will give you the answer.
Oi, give flamenco brainliest.
The pet store has 20 mice: 11 are white, five are
grey, and four are brown. If the pet storeowner
randomly chooses a mouse for the window
display, what is the probability that the mouse
will be grey?
Answer:
The answer is: 5/20 or a 25% chance
The probability that the pet store owner randomly selects a grey mouse for the window display is 0.25 or 25%.
Explanation:The question asks for the probability of selecting a grey mouse from a pet store that has a total of 20 mice consisting of 11 white, 5 grey, and 4 brown mice. To find the probability, we use the ratio of the number of grey mice to the total number of mice.
The formula for probability is:
Probability (P) = Number of favorable outcomes / Total number of outcomes
We apply the formula as follows:
P(grey mouse) = Number of grey mice / Total number of mice = 5 / 20 = 0.25 or 25%
Therefore, the probability that the pet store owner selects a grey mouse for the window display is 25%.
How many cube-shaped boxes with 12-inch edges can fit into a box thatis 4
feet tall, 4 feet long, and 5 feet wide?
Answer:
80
Step-by-step explanation:
First recall that:
1 inch=12 feet
The volume of cube-shaped boxes with 12-inch edges is 1 cm³
The volume of a box that is 4
feet tall, 4 feet long, and 5 feet wide is
given by:
[tex]Volume = lwh[/tex]
We substitute l=4ft, w=5ft and h=4ft
To obtain:
[tex]Volume = 4 \times 4 \times 5 = 80 {ft}^{3} [/tex]
Therefore 80 cube-shaped boxes with 12-inch edges can fit into a box that is 4
feet tall, 4 feet long, and 5 feet wide.
Gilberto’s grandfather gives him $5 for his birthday and then $.50 for each math question he answers correctly on his math exams for the year. Write an equation that represents the amount of money that Gilberto receives during the school year. Explain what the variables and numbers mean.
Answer:
Therefore total amount of money that he got is = $(5+0.50x) [ x = number of correct math]Step-by-step explanation:
Given, Gilberto's grandfather gives him $5 for his birthday and then$0.50 for each math he answers correctly on his math exam for the year.
Let , the number of math that he answers correctly on his his math exam for the year is x
Therefore he got = $(0.50× x) =$ 0.50x for doing correct math.
Therefore total amount of money that he got is = $(5+0.50x) [ x = number of correct math]
the length of the top of a rectangular-shaped deck is 6 meters longer than its width. if the area of the top of the deck is 72 square meters, what is it’s length in meters?
Answer:
6 meters
Step-by-step explanation:
length= 6+x
width= x
x (x+6)= 72⇔ [tex]x^{2}[/tex] + 6x - 72= 0⇔ x= (-6 ±[tex]\sqrt{6^{2} -4 *1*(-72) }[/tex]) / 2*1⇔
⇔ x= (-6±√324)/2 ⇔ x= (-6±18)/2 ⇔ x= 6 ∨ x= -12
Since the width of a rectangle can't be negative, the answer will be 6 meters.
Which of the following best describes the situation below?
The number of miles a car can run depends on the gallons of gasoline in the
tank.
O
O
O
A. A relation that is not a function
B. A relation that is a function
C. The range of a function
D. The domain of a function
Answer:
c
Step-by-step explanation:
The situation described where the number of miles a car can run depends on the gallons of gasoline in the tank is a relation that is a function. Because for each amount of gas, there is one corresponding maximum distance the car can travel.
Explanation:The situation described illustrates a relation that is a function. In this case, the amount of gasoline (in gallons) in the car's tank is the input or the independent variable (the domain), and the distance the vehicle can travel (the output or dependent variable) is a function of this input. For each amount of gasoline, there is only one corresponding maximum distance the car can travel, so this is a function. Thus, the best answer is B. A relation that is a function.
Learn more about Function here:https://brainly.com/question/30721594
#SPJ2
a student earns 42 points out of 60 points on a test what percent of the points did the student answer
Answer:
It would be a 70%
Step-by-step explanation:
Convert fraction (ratio) 42 / 60 Answer: 70%
Answer:
I think 24% percent?????
3/3 as a whole number
Answer:1
Step-by-step explanation:
3 full parts out of 3 is 1
Answer:
1
Step-by-step explanation:
Any number over itself always simplifies to 1
Expression equivalent to (0.28t-0.3)-(0.7t-0.28)?
A. 0.42t+0.58
B. -0.42t-0.02
C. 0.42t-0.02
D. -0.42t+0.58
Please help!
GIVEN THE FUNCTION F(X) =3X + 5 AND X SUCH THAT F(X)=38
The value of X is 11.
Step-by-step explanation:
Given,
F(X) = 3X + 5 --------(1)F(X) = 38 ------------(2)Equating eq(1) and (2),
⇒ 3X+5 = 38
⇒ 3X = 38-5
⇒ X = 33/3
⇒ X = 11
If an intercepted arc measures 124°, what is the measure of its inscribed angle? the same, 124° twice the measure, 248° half the measure, 62°
Answer:
The correct option is C.) half the measure 62°
Step-by-step explanation:
i) Intercepted arc measures 124°
ii) The measure of the inscribed angle will be half of the intercepted arc
therefore inscribed angle = 124° / 2 = 62°
iii) Therefore the correct option is C.) half the measure 62°
The measure of an angle inscribed in a circle is half the measure of its intercepted arc. Therefore, if the intercepted arc is 124°, the inscribed angle would be 62°.
Explanation:This problem is related to the relationship between arcs and inscribed angles in circles. In geometry, there's a specific rule that states: the measure of an angle inscribed in a circle is half the measure of its intercepted arc.
Therefore, if the intercepted arc measures 124°, its inscribed angle would have half the measure, or 62°. If the inscribed angle were to have the same measure, it would imply that the arc measure was double the angle, which is not the case here.
Learn more about Arcs and Inscribed Angles here:https://brainly.com/question/16044660
#SPJ3
LULUI VIEW
If f(x) = 4x and g(x)= x4 - 2, what is go f(x)?
Answer:
256[tex]x^{4}[/tex] - 2
Step-by-step explanation:
To evaluate (g ￮ f )(x), substitute x = f(x) into g(x)
g(4x) = [tex](4x)^{4}[/tex] - 2 = 256[tex]x^{4}[/tex] - 2
Solve for x: 14-14x^1/3 =2
Answer: 216/343 or 0.6297
Step-by-step explanation:
[tex]14-14x^{1/3} = 2\\14 -2 = 14x^{1/3}\\12 = 14x^{1/3}\\\frac{12}{14} =x^{1/3}\\\frac{6}{7} =x^{1/3}\\(\frac{6}{7})^3 =(x^{1/3})^3\\\frac{6^3}{7^3} =x\\\\\frac{216}{343} = 0.629737609 = x[/tex]
pls help!
Multiply the following polynomials. 3x3(5x2+4x)
8x6+7x3
15x6+12x4
15x6+12x3
15x5+12x4
8x5+7x4
15x5+12x3
Answer:
78
Step-by-step explanation:
you multiply
Answer:
15x^9+12x^4
b is the answer
please show work read what the question wants in both pictures
Answer:
2) m∠CBD = 60 3) x=15; 95 and 85 4) 12 = x; 98 for both angles
Step-by-step explanation:
2) 2x + 14 + x + 7 = 90 The angles add up to 90 degrees
3x + 21 = 90 Combine like terms
- 21 - 21 Subtract 21 from both sides
3x = 69 Divide both sides by 3
x = 23
Plug 23 in the equation
2(23) + 14
46 + 14
60
3) 2x + 65 + 3x + 40 = 180 The angles add up to 180 degrees
5x + 105 = 180 Combine like terms
- 105 - 105 Subtract 105 from both sides
5x = 75 Divide both sides by 5
x = 15
Plug in 15 into both equations
2(15) + 65 = 95
3(15) + 40 = 85
4) 5x + 38 = 9x - 10
- 5x - 5x Subtract 5x from both sides
38 = 4x - 10
+ 10 + 10 Add 10 to both sides
48 = 4x Divide both sides by 4
12 = x
Plug in 12 into both equations
5(12) + 38 = 98
9(12) - 10 = 98
Write 2.14 in word form
Answer:
two dollars and fourteen cents
Step-by-step explanation:
Answer:two point fourteen
Step-by-step explanation:
If 130 is invested in a savings account that earns 4% interest per year, which of the following is closest to the amount in the account at the end of 10 years
Micah is preparing for a piano recital. He practices for 50 minutes on Monday and 90 minutes on Wensday
Answer:
She increased 80% the practise time
Step-by-step explanation:
The question is incomplete, the following is missing:
by how much did she increase the time she practised each day?
From Monday to Wednesday she increased 90 - 50 = 40 minutes the practise time.
To compute the increment as a percentage use: increment/reference *100
In this case, that is: 40/50*100 = 80%, where 50 minutes is taken as a reference.
Answer: increased by 40
she increased by 80%
Step-by-step explanation:
Carle is cutting pieces of string that are exactly 24 3/8 inches long. How many pieces can she cut from a ball of string that has 100 feet
49 pieces of string can be cut from a ball of string that has 100 feet
Solution:
Given that, Carle is cutting pieces of string that are exactly 24 3/8 inches long
Therefore,
[tex]Length\ of\ each\ string = 24\frac{3}{8}\ inches = \frac{8 \times 24 + 3}{8} = \frac{195}{8}\ inches[/tex]
How many pieces can she cut from a ball of string that has 100 feet
Total length of string = 100 feet
Convert feet to inches
1 feet = 12 inch
100 feet = 1200 inch
Therefore, number of pieces that can be cut is given as:
[tex]\text{Number of pieces } = \frac{\text{total length of string}}{\text{length of each string}}[/tex]
Substituting the values we get,
[tex]\text{Number of pieces } = \frac{1200}{\frac{195}{8}}\\\\\text{Number of pieces } = 1200 \times \frac{8}{195}\\\\\text{Number of pieces } = 49.2307 \approx 49[/tex]
Therefore, 49 pieces of string can be cut from a ball of string that has 100 feet
5+15x=5( ) I'm not writing 20 characters
Answer:
(1 + 3x).
Step-by-step explanation:
We have to evaluate the missing term within the brackets in the following equation.
The equation is, 5 + 15x = 5(?)
Now, 5 + 15x
= 5 × 1 + 5 × 3x {We have to factorize the term where 5 is a factor}
= 5(1 + 3x) {This is reverse of the distributive property of multiplication}
Therefore, the missing term within the brackets is (1 + 3x). (Answer)
suppose you are performing an experiment in science class in which you start with 70 bacteria and the amount of bacteria triples every hour write a function to represent the growth of the bacteria overtime in your science experiment
The function to represent the growth of the bacteria overtime in your science experiment is:
[tex]y = 70(3^x)[/tex]
Solution:
Given that,
Suppose you are performing an experiment in science class in which you start with 70 bacteria and the amount of bacteria triples every hour
Let,
y is the number of bacteria at time x
x is the number of hour(time)
As per the given information,
You start your experiment with 70 bacteria,and the bacteria triples in every hour
Therefore,
At end of 1 hour,
y = 70 x 3 = 210
At the end of 2 hours,
[tex]y = 210 \times 3 = 630\\\\Which\ can\ also\ be\ written\ as\\\\y = 70 \times 3^2 = 70 \times 9 = 630[/tex]
At the end of 3 hours,
[tex]y = 630 \times 3 =1890 \\\\Which\ can\ also\ be\ written\ as\\\\y = 70 \times 3^3 = 70 \times 27 = 1890[/tex]
Thus at end of "x" hours we will have,
[tex]y = 70 \times 3^x\\\\y = 70(3^x)[/tex]
Thus the function to represent the growth of the bacteria overtime in your science experiment
Solutions to -8x + 5 less than or equal to 11
Answer:
[tex]x\geq -\frac{3}{4}[/tex]
Step-by-step explanation:
[tex]-8x+5\leq 11\\\\1. -8x\leq 11-5\\ -8x\leq 6[/tex]
Isolate the parts of the equation with the x variable
[tex]2. \frac{-8}{-8} x\geq\frac{6}{-8} \\x\geq -\frac{3}{4}[/tex]
When you divide or multiply by a negative number in inequalities, you must flip the sign of the inequality.
Hello there!
Im assuming you're solving for X!
Answer:
Your answer in Inequality Form comes to:
x > -3/4
Explanation:
Isolate the variable by dividing each side by factors that don't contain the variable.