When you say Percent, you really mean per 100. So percentage is the result you get when multiplying a quantity by a percent. To find 80% of 20, we can use the following expression:
[tex]20\times \frac{80}{100}=16[/tex]
That is the product of 80 and 20 divided by 100, which is 16.
Answer:
The correct answer is
80% of 20 = 16
Step-by-step explanation:
points to remember
x% of y is given by
(x/100) * y
To find 80% of 20
Let 'x' be the 80% of 20 then we can write,
x = (80/100) * 20
x = (8/10) * 20
= 8 * 2 = 16
Therefore 80% of 20 is 16
The correct answer is 16
How many times larger than 3x10^2 is 12x10^6?
A)3.6x10^8
B)1.2x10^7
C)4x10^8
D)4x10^4
the answer is D you’re welcome
25 Points Attachment Below Thanks
Area of a circle = PI x r^2
r is 1/2 the diameter = 0.5 inches
Area = 3.14 x 0.5^2
Area = 0.79 in^2
It looks like it’s missing something...is it a part A ?
Give the first four terms of the geometric sequence for which a1 = -7 and r= -4
Answer:
- 7, 28, - 112, 448
Step-by-step explanation:
To obtain the next term in a geometric sequence multiply the previous term by r
Given
a₁ = - 7 and r = - 4, then
a₂ = - 7 × - 4 = 28
a₃ = 28 × - 4 = - 112
a₄ = - 112 × - 4 = 448
The first four terms are - 7, 28, - 112, 448
Plz help me with this
Answer options: No or yes
No and the graph has a greater minimum.
Answer: YES, Graph
Step-by-step explanation:
Graph: minima (lowest point) is (4, -4)
Equation f(x) = x² - 8x + 7
[tex]x=\dfrac{-b}{2a}=\dfrac{-(-8)}{2(1)}=\dfrac{8}{2}=4\\\\y=(4)^2-8(4)+7\\.\ =16-32+7\\.\ =-9\\[/tex]
minimima is (4, -9)
The x-values are the same
The y-value of the Graph is greater (higher)
What is the order from greatest to least: .625, 0.67, 1.2, and .6?
Answer:
Step-by-step explanation:
1.2,0.67,0.625,0.6
the answer is .6,.625,0.67,1.2
How do i simplify this as much as possible
6(√a³b²c⁴)/9b√ac³
Answer: [tex]\frac{2a\sqrt{c}}{3}[/tex]
Step-by-step explanation:
Remember that:
[tex]\sqrt[n]{a^n}=a[/tex][tex]\sqrt{ab}=(\sqrt{a})(\sqrt{b})[/tex][tex](\sqrt{a})^2=a[/tex]The product of powers property establishes that: [tex](a^m)(a^n)=a^{(m+n)}[/tex]Given the expression [tex]\frac{6(\sqrt{a^3b^2c^4})}{9b\sqrt{ac^3} }[/tex]
You know that:
[tex]a^3=a^2*a\\c^3=c^2*c[/tex]
Then, you must rewrite the expression and simplify:
[tex]\frac{6\sqrt{a^2ab^2c^4}}{9b\sqrt{ac^2c} }=\frac{6abc^2\sqrt{a}}{9bc\sqrt{ac}}=\frac{2ac\sqrt{a}}{3(\sqrt{a})(\sqrt{c})}=\frac{2ac}{3\sqrt{c}}[/tex]
Multiply the numerator and the denominator by [tex]\sqrt{c}[/tex]:
[tex]\frac{(2ac)\sqrt{c})}{(3\sqrt{c})(\sqrt{c})}=\frac{2ac\sqrt{c}}{3(\sqrt{c})^2}=\frac{2ac\sqrt{c}}{3c}=\frac{2a\sqrt{c}}{3}[/tex]
The rectangle below has an area of 121-x^2 square meters and a length of 11 - x meters. What expression represents the width of the rectangle?
Answer:
11+x
Step-by-step explanation:
Straight outta Khan
The width of the rectangle with an area of 121-x^2 square meters and a length of 11 - x meters is represented by the expression 11 + x meters.
Explanation:The area of a rectangle is the product of its length and width. In this case, the area is given as 121-x^2 square meters, while the length is given as 11 - x meters. To find the expression for the width, we divide the area by the length. Therefore, the width w can be represented by the following equation:
w = \(\frac{Area}{Length}\) = \(\frac{121-x^2}{11-x}\).
Due to the structure of the quadratic area (a perfect square difference) and the linear length (a factor of the quadratic), the equation simplifies to:
w = \(\frac{(11+x)(11-x)}{11-x}\).
Canceling out the common factor (11-x), we are left with:
w = 11 + x.
Thus, the expression representing the width of the rectangle is 11 + x meters.
Jane left the school and started to bike along the road at a rate of 12 mph. Her friend Sally left the school 10 minutes after Jane, biking on the same road at a rate of 15 mph. How long will it take Sally to catch up with Jane?
Answer:
8 minutes if Jane was assumed to be stationary
Step-by-step explanation:
The question is on relative speed
First find the distance covered by Jane when Sally left school
Speed=Distance/Time ⇒⇒ Distance=Time×Speed
Time=10minute=10/60 hrs
Jane's speed= 12mph
Distance covered by Jane when Sally left school was= 12 ×10/60 = 2miles
So, when Sally left school, Jane was 2 miles away. To find the time Sally requires to catch up with Jane;
Time=Distance/speed
Time of meeting =2/15 hrs ⇒⇒ 2/15 × 60 =8minutes
How many vertices does a square pyramid have
Answer:
5 vertices
Step-by-step explanation:
4 on the bottom and 1 on the top
Answer:
5
Step-by-step explanation:
If n is the number which equation could be used to solve for the number
Answer:
I think the answer is B which is the one you have selected.
Answer:
I think the answer is B.
Tina is attempting to factor the expression 10x^2-13-3. In her first step, she rewrites the expression as 10x^2-10x-3x-3. Which of the following statements in true about Tina's work?
ANSWER
B. The two middle coefficients add to the correct number but do not multiply to the correct number.
EXPLANATION
The given quadratic trinomial that Tina tries to factor is
[tex]10 {x}^{2} - 13x - 3[/tex]
Comparing to
[tex]a{x}^{2} + bx + c[/tex]
we have a=10, b=-13 and c=-3
ac=-3×10=-30
We split the middle term so that their sum is -13.
Tina use
-10,-3
to get
-10x-3x
The sum is -13x alright but the product is not -30.
B is correct.
evaluate c÷d÷[-1/6] if c=103
Answer:
-618/d
Step-by-step explanation:
103 divided by d is 103/d and that divided by -1/6 is -618/d
In 25 minutes, 300 customers entered the attraction. At this rate, how many customers would enter the attraction in 1 hour?
(Hint: you can set up a ratio to solve this).
Answer:
720 i would think.
Step-by-step explanation:
Jerry drove 10 miles in half the time it took Marcy to drive 10 miles. If jerry average speed was r miles per hour what was Marcy average speed in miles per hour
Answer:
0.5r
Step-by-step explanation:
If Jerry took half the time Macy did then that means Macy took twice as long as Jerry. If Jerry’s speed was r then Macy’s speed is 0.5r or half the speed of Jerry. This will mean Macy goes half as slow and takes twice as long to get there.
The average speed of Marcy in miles per hour is 0.5r.
If Jerry took half the time Marcy did then that means Marcy took twice as long as Jerry. If Jerry’s speed was r then Macy’s speed is 0.5r or half the speed of Jerry. This will mean Marcy goes half as slow and takes twice as long to get there.
Hence, The average speed of Marcy in miles per hour is 0.5r.
Learn more about Average speed here https://brainly.com/question/4931057
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What is the cos of 2
Answer:
-0.41614683654
Step-by-step explanation:
Answer: The answer is -0.41614683654. hope I helped. :)
Find the point, M, that divides segment AB into a ratio of 2:3 if A is at (0, 15) and B is at (20, 0).
What is segment ab? is there a picture that is supposed to go with it?
Answer: The required co-ordinates of point M are (8, 9).
Step-by-step explanation: Given that the point M divides segment AB into a ratio of 2 : 3, where A is at (0, 15) and B is at (20, 0).
We are to find the co-ordinates of point M.
We know that
the co-ordinates of a point that divides the line segment joining the points (a, b) and (c, d) are given by
[tex]\left(\dfrac{mc+na}{m+n},\dfrac{md+nb}{m+n}\right).[/tex]
For the given division, (a, b) = (0, 15), (c, d) = (20, 0) and m : n = 2 : 3.
Therefore, the co-ordinates of point M are given by
[tex]\left(\dfrac{2\times20+3\times0}{2+3},\dfrac{2\times0+3\times15}{2+3}\right)\\\\\\=\left(\dfrac{40}{5},\dfrac{45}{5}\right)\\\\\\=\left(8,9).[/tex]
Thus, the required co-ordinates of point M are (8, 9).
A line passes through the point (-7,5) And has a slope of 1/2 which is another point that the line passes through
(9,13) would be another point that the line passes through.
Answer: 9/13 C
Step-by-step explanation:
which is not a proportion???
The answer is C. C is not a proportion.
Hope this helps!
Answer:
C
Step-by-step explanation:
By definition a proportion should be equal to each other and can be multiplied by the same number on the numerator and the denominator to make the second fraction.
[tex]\frac{x_1}{y_1}=\frac{x_2}{y_2}[/tex]
[tex]\frac{x_1}{y_1}*\frac{z}{z}=\frac{x_2}{y_2}[/tex]
A
[tex]\frac{3}{7}*\frac{3}{3}=\frac{9}{21}[/tex]
So it is a proportion.
B
[tex]\frac{24}{56}/\frac{8}{8}=\frac{3}{7}[/tex]
So it is a proportion.
C
[tex]\frac{3}{7}*\frac{3}{4}=\frac{9}{28}[/tex]
So it is not a proportion.
D
[tex]\frac{3}{7}*\frac{4}{4}=\frac{12}{28}[/tex]
Carlos found that the length of the diagonal of his laptop monitor is squared root of 290. If the manufacturer rounds to the nearest whole inch, what size is the monitor as measured by the diagonal? 12 17 97 245
Answer:
[tex]17\ in[/tex]
Step-by-step explanation:
Let
D -----> the diagonal of the laptop monitor
we have
[tex]D=\sqrt{290}\ in[/tex]
Using a calculator
[tex]D=\sqrt{290}=17.03\ in[/tex]
Round to the nearest whole number
[tex]17.03\ in=17\ in[/tex]
Answer:
17
Step-by-step explanation:
i jus did this on edg
Using elimination, find the ordered pair.
6x + 15y = 15
-6x +7y = -37
Answer:
x = -1 and y = 7/5Step-by-step explanation:
[tex]\underline{+\left\{\begin{array}{ccc}6x+15y=15\\-6x+7y=-37\end{array}\right}\qquad\text{add both sides of the equations}\\.\qquad\qquad22x=-22\qquad\text{divide both sides by 22}\\.\qquad\qquad x=-1\\\\\text{Put the value of x to the first equation:}\\6(-1)+15y=15\\-6+15y=15\qquad\text{add 6 to both sides}\\15y=21\qquad\text{divide both sides by 15}\\y=\dfrac{21}{15}\to y=\dfrac{7}{5}[/tex]
3w - 4z = 8 what is w
Final answer:
To find w from the equation 3w - 4z = 8, add 4z to both sides, and then divide by 3 to isolate w, giving w = (4z + 8) / 3.
Explanation:
The equation 3w - 4z = 8 is a linear equation in two variables (w and z). To find w in terms of z, you need to isolate w on one side of the equation. Here is the process step by step:
Add 4z to both sides of the equation: 3w - 4z + 4z = 8 + 4z.
Simplify the equation: 3w = 4z + 8.
Divide every term by 3 to solve for w: w = (4z + 8) / 3.
So, w is equal to (4z + 8) / 3 when isolated from the given equation.
On Saturday,April 5th, Sena the baby giraffe was born at the Fresno Chaffee Zoo. At birth, she weighed 125 pounds. If she gained 96 ounces one week after her birth, how many pounds would she weigh all together at the end of her first week?
131 because u divide 96 and 16 and get 6 then add that to 125
Shelby’s recipe says to add 3/4 cup of brown sugar and 1/8 cup of white sugar how much sugar recipe call for altogether
Answer:you need common denominatord 4*2=8 3*2=6 6/8+1/8=7/8 of sugar
Step-by-step explanation:
A potential buyer of the breed of snake known as a rattlesnake wishes to find the average weight and length of a full-grown reptile. Which of the following is an effective method of collecting a sample of the population?
A.) Measuring the weight and length of 200 rattlesnakes from across the United States
B.) Measuring the weight and length of all rattlesnakes in the United States
C.) Sending a questionnaire to breeders at the nationally recognized Snake Breeders Association of America and asking them for their expert opinion regarding the average weight and length of these snakes
D.) Measuring the weight and length of 10 rattlesnakes found at the local zoo
Answer:
A
Step-by-step explanation:
Answer:
A
Step-by-step explanation:
Obviously it's impossible for anyone to measure the weight and length of all US rattlesnakes.
Thus, A is correct. 200 is not a large sample compared to millions or billions of rattlesnakes, but is still a lot more reasonable and workable than attempting to measure ALL US rattlesnakes.
HELP PLEASE HELP IF YOU CAN :)
Answer:
A
Step-by-step explanation:
If you plug them in you get 2≥-1
What is the area of this tile?
12 in. ²
a = bh
a = 2 x 6
a = 12 in. ²
Answer:
12 in. ^2
Step-by-step explanation:
The area of a rectangle can be found by using the formula legnth x width.
Here the legnth is 2 in. and the width is 6 in.
6 x 2 = 12
Whenever you find the area, unit of measurement is ^2, thus resulting in the answer 12 in. ^2
I hope this helps!
The equation X squared plus Y squared minus 2X plus 7Y +1 equals zero can be written as which of the following equations
For this case we must write in algebraic symbology the expression described above:
We have an equation, then:
x squared plus y squared: [tex]x ^ 2 + y ^ 2[/tex]minus 2x plus 7y plus 1: [tex]-2x + 7y + 1[/tex]equals zero: [tex]= 0[/tex]We construct the equation:
[tex]x ^ 2 + y ^ 2-2x + 7y + 1 = 0[/tex]
Answer:
[tex]x ^ 2 + y ^ 2-2x + 7y + 1 = 0[/tex]
A rectangular prism with a volume of 2 cubic units is filled with cubes with side lengths of 1/4 unit. How many 1/4 unit cubes does it take to fill the prism?
Answer:
128
Step-by-step explanation:
Method A.
The volume of the prism is 2 cubic units.
Each cube has side length of 1/4 unit.
The volume of each cube is (1/4)^3 cubic unit.
The volume of each cube is 1/64 cubic unit.
To find the number of cubes that fit in the prism, we divide the volume of the prism by the volume of one cube.
(2 cubic units)/(1/64 cubic units) =
= 2/(1/64)
= 2 * 64
= 128
Method B.
Imagine that the prism has side lengths 1 unit, 1 unit, and 2 units (which does result in a 2 cubic unit volume.) Since each cube has side length 1/4 unit, then you can fit 4 cubes by 4 cubes by 8 cubes in the prism. Then the number of cubes is: 4 * 4 * 8 = 128
He right answer is 128
I need helpppp pls!!
Answer:
y = -2x + 16
Step-by-step explanation:
A line perpendicular to y = (1/2)x - 6 would have a slope that is the negative reciprocal of 1/2, that is, a slope of -2. Here the given point is (h, k): (6, 4)
Applying the point-slope formula of the straight line,
y - k = m(x - h), where (h, k) is the point, we get:
y - 4 = -2(x - 6), or
y = 4 - 2x + 12, or
y = -2x + 16
Brainliest + Points!
Explain please
What is the frequency of the musical note middle C if its period is 0.0038?
A.
224.42 hertz
B.
263.16 hertz
C.
281.74 hertz
D.
302.49 hertz
Answer:B
Step-by-step explanation:
Answer: B. 263.16 hertz
Step-by-step explanation:
We are given the time period of a musical note T= 0.0038 seconds.
Since ,we know that the frequency is given by the reciprocal value of the time period.
Therefore, the frequency of the musical note middle is given by :-
[tex]\nu=\dfrac{1}{T}\\\\\Rightararow\nu=\dfrac{1}{0.0038}\\\\\Rightararow\nu=263.157894737\approx263.16\ Hz[/tex]
Hence, the frequency of the musical note middle C = 263.16 Hertz