Answer:
g(x)=x²/4
Step-by-step explanation:
g(x)=ax²+bx+c
g(0)=0 => c=0
g(-2)=1 => 4a-2b=1;
g(2)=1 => 4a+2b=1 (+)
8a=2 => a=1/4
4*1/4+2b=1=> b=0
=> g(x)=x²/4
Multiply the pairs of numbers and match them with their products. Tiles (-5)(4.2) (-7)(-3) (4) (5) (2.5)(-9) Pairs 22.5 21 -22.5 -21 111
Here are the pairs matched with their products:
- (-5)(4.2) matches with -21
- (-7)(-3) matches with 21
- (2.5)(-9) matches with -22.5
Pairs (4) and (5) do not have corresponding products in the given options.
In a group of 25 students, 6 study both Art and Biology. 10 study Biology but not Art. 3 study neither subject. Given that a randomly selected student studies Art, what is the probability the student studies Art and Biology?
Answer:
1/2
Step-by-step explanation:
There are a total of 25 students. 3 don't study art or biology. 10 study only biology. 6 study both art and biology. This means the remaining students only study art.
1. Calculate the number of students taking art
only art: 25 - 3 - 6 - 10 = 6
number of students taking art and biology: 6
total number of students taking art: 12
2. Calculate the probability
Out of the 12 total students taking art, 6 are in art and biology.
6/12 = 1/2
Probability that the student studies Art and biology is; P(A n B) = ½
We are given;
Total number of students in the group; n = 25 students
Number that study both art and biology; n(A u B) = 6
Number that study biology but not art; n(B u A') = 10
Number that study none of the 3 subjects; n(A' u B') = 3
Now;
Number that study only arts is; n(A n B') = 25 - 6 - 10 - 3 = 6
Since n(A u B) = 6
Then;
n(A) = n(A u B) + n(A n B')
n(A) = 6 + 6
n(A) = 12
Thus;
Probability that the student studies Art and biology is;
P(A n B) = 6/12
P(A n B) = ½
Read more about venn diagrams at; https://brainly.com/question/2099071
Please Help ASAP!!!
What is the correct expanded form and value of (One-fifth) Superscript 4?
One-fifth + one-fifth + one-fifth + one-fifth = StartFraction 4 Over 5 EndFraction
One-fifth times one-fifth times one-fifth times one-fifth = StartFraction 1 Over 625 EndFraction
StartFraction 1 + 1 + 1 + 1 Over 5 times 4 EndFraction = StartFraction 4 Over 20 EndFraction
One-fifth times 4 = StartFraction 4 Over 5 EndFraction
Answer:
One-fifth times one-fifth times one-fifth times one-fifth = StartFraction 1 Over 625 EndFraction
Step-by-step explanation:
1/5^4 = 1/5 * 1/5 * 1/5 *1/5 = 1/625
The expanded form of (One-fifth)⁴ is "StartFraction 1 Over 5 EndFraction times StartFraction 1 Over 5 EndFraction times StartFraction 1 Over 5 EndFraction times StartFraction 1 Over 5 EndFraction," and its value is "StartFraction 1 Over 625 EndFraction."
The expanded form of (One-fifth)⁴ can be derived by multiplying (1/5) four times. Each multiplication represents multiplying by one-fifth, resulting in "StartFraction 1 Over 5 EndFraction times StartFraction 1 Over 5 EndFraction times StartFraction 1 Over 5 EndFraction times StartFraction 1 Over 5 EndFraction." This can be further simplified as "StartFraction 1 Over 625 EndFraction" by multiplying the numerators and the denominators separately.
In mathematical terms, when we raise one-fifth to the power of 4, we are essentially multiplying one-fifth by itself four times. Thus, (One-fifth)⁴ is equal to "StartFraction 1 Over 5 EndFraction times StartFraction 1 Over 5 EndFraction times StartFraction 1 Over 5 EndFraction times StartFraction 1 Over 5 EndFraction."
Evaluating this expression yields the value "StartFraction 1 Over 625 EndFraction" since multiplying the numerators (1 * 1 * 1 * 1) and the denominators (5 * 5 * 5 * 5) results in 1 and 625, respectively.
Mathematical representation: \(\frac{1}{5}^4= \frac{1}{5} * \frac{1}{5} * \frac{1}{5} * \frac{1}{5}\)
To learn more about expanded form,
https://brainly.com/question/102887
(Surface Area of Cylinders MC)
Determine the exact surface area of the cylinder in terms of π.
cylinder with radius labeled 1 and one fourth centimeters and a height labeled 3 and three fourths centimeters
39 and one fourth times pi square centimeters
14 and one sixteenth times pi square centimeters
12 and one half times pi square centimeters
10 and 15 sixteenths times pi square centimeters
The surface area of a cylinder can be found by adding the areas of the top and bottom circles, as well as the area of the side (lateral) surface.
The radius of the cylinder is 1 and one fourth centimeters, which can be written as 5/4 cm. The height of the cylinder is 3 and three fourths centimeters, which can be written as 15/4 cm.
The area of each circle is πr^2, where r is the radius. So, the area of the top and bottom circles is:
2π(5/4)^2 = 25/2 π square centimeters
The lateral surface area of a cylinder is given by the formula 2πrh, where r is the radius and h is the height. So, the lateral surface area of the cylinder is:
2π(5/4)(15/4) = 75/2 π square centimeters
Therefore, the total surface area of the cylinder is:
25/2 π + 75/2 π = 100/2 π = 50 π square centimeters
So, the exact surface area of the cylinder in terms of π is 50π square centimeters. None of the given options matches this answer.
Mackey invested some money in an account paying 6% interest for one year. She invested $1000 more than this amount in an account paying 8.5%. How much did she invest in total if the total interest earned in the year was $737.50?
Step-by-step explanation:
Let's assume the amount Mackey initially invested in the 6% account is x dollars.
According to the given information, Mackey invested $1000 more than x in the 8.5% account, which means she invested (x + $1000) dollars in that account.
The total interest earned from the 6% account would be 0.06x dollars, and the total interest earned from the 8.5% account would be 0.085(x + $1000) dollars.
The total interest earned in the year is given as $737.50, so we can set up the equation:
0.06x + 0.085(x + $1000) = $737.50
Simplifying the equation:
0.06x + 0.085x + 0.085($1000) = $737.50
Combining like terms:
0.145x + $85 = $737.50
Subtracting $85 from both sides:
0.145x = $737.50 - $85
0.145x = $652.50
Dividing both sides by 0.145:
x = $652.50 / 0.145
x ≈ $4500
Therefore, Mackey initially invested approximately $4500 in the 6% account, and she invested $1000 more, which means she invested a total of $5500.
$4500
$4500
$4500
$4500
help me on this question pls
Answer: 0.0000039
Step-by-step explanation:
3.9x0.000001=0.0000039
Answer:12
Step-by-step explanation:multiply the numbers and subtract 6 hope this helped
Helena, Violet, and Kaneesha are on a baseball team. They each bought a baseball and x pairs of sweat socks. Write an expression to show the teams purchase. !(x*y)+(x*y)!
Baseball - $5
Sweat Socks - $7
Soccer Ball - $21
Answer:
Step-by-step explanation:
Helena Violet Kaneesha
1b 1b 1b
x pairs x pairs x pairs
Helena 1b + x pairs of socks
Helena = 1 b(baseball) + $7X ( X is the number of pairs of socks)
Helena ----- $5 + 7X
Since all 3 bought the same thing, multiply the above by 3
answer = 3(5 +7x)
or Distribute
Answer = (3*5) + (3*7x)
Sarah is walking hope from school. She decides to buy a candy bar and a soda from the convenience store. The soda costs 2.39 and the candy bar costs 1.69. What was the total cost of her snacks?
(I made this question up for fun so u dont have to answere it)
Answer:
$4.08
Step-by-step explanation:
Answer:
I think... $4.08 maybe... I may be wrong lol actually that's it..
Which scenario can be modeled by the linear function
y = -15x + 500?
A. The temperature on Jupiter is
15℉ and increases by 500℉ every day.
B. There is a population of 500 giraffes in Western Africa that decreases by 15 giraffes each year.
C. A carpet cleaning service charges $500 plus an additional $15 for every hour.
D. A membership fee for a movie streaming service is free, but each rental costs $15.
PLS HELP DUE SOON: When Hank makes chocolate milk, he mixes 2 cups...
Answer:
The scale factor is 1.5
The table shows a proportional relationship between tablespoons of chocolate syrup and cups of milk.
Step-by-step explanation:
we know that
A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form or
In a proportional relationship the constant of proportionality k is equal to the slope m of the line
Let
x ----> the quantity of cups of milk
y ----> the quantity of tablespoons of chocolate syrup
k ---> the constant of proportionality
For y=3, x=2 ----->
For y=12, x=8 ----->
For y=3/2, x=1 ----->
For y=15, x=10 ----->
therefore
The table shows a proportional relationship between tablespoons of chocolate syrup and cups of milk
The linear equation is
That means----> The the quantity of tablespoons of chocolate syrup is 1.5 times the quantity of cups of milk
The scale factor is equal to the ratio between tablespoons of chocolate syrup and cups of milk. Is equal to the constant of proportionality k
The scale factor is 1.5
The grocery store is having a sale that offers 45% off the original price. What fraction is taking off the prices? (simplify your fraction)
Choose the three equivalent forms of 4.625.
four and five eighths, 462.5%, thirty seven eighths
four and six twenty fifths, 4.625%, thirty seven eighths
four and five eighths, 4.625%, forty five eighths
four and six twenty fifths, 462.5%, forty five eighths
Answer:
Step-by-step explanation:
4.625%- percents and decimals are the same
four and five eighths- five divided by eight is (.625) and 4+ (.625) is 4.625
thirty seven eighths- 37 divided by 8 is 4.625
PLEASEE HELP ME
Referring to the figure, find the area of the rectangle shown.
a. 48 m2 c. 567 m2
b. 96 m d. 2,268 m2
Answer:
c
Step-by-step explanation:
area is length multiply width 21 and 27 is 567m2
free brain list for the correct answer
question 3
If jack had $10000 for every second he worked how long would it take for him to become a millionaire ?
Someone help me please
Answer: 5/22
Step-by-step explanation:
simplify at the end
Answer:
the answer is 11/26
Step-by-step explanation:
The Probability that draw results in a wild card 11/26.
What is Probability?
Probability is possibility deals that "occurrence chance random event".
According to the question,
Let 'X' be the random variable drawing wild card.
Number of cards in a deck = 104
From one replacement we get 44 cards
Formula for Probability P(E) =
= = =
P(E) = .
Hence, The Probability that draw results in a wild card 11/26.
Learn more about Probability here
PLZ HELP URGENT!!!!!!!
A rock is thrown off a cliff and falls toward a river. The height, in feet, of the rock above the river after t seconds is given by the expression 60 + 32t – 16t2. How many feet above the river is the rock 3 seconds after it is thrown?
Answer:
t=1
Step-by-step explanation:
Answer:
t=1
Step-by-step explanation:
Help me thank you so much if you do help me :D
Answer: 706.001
Step-by-step explanation:
Most logical way is if you re-arrange. If u re-arrange, you will get seven hundred and six one-thousandths. From here it's easy. seven hundred six is 706. one-thousandths is 0.001. If you add 706 and 0.001, you will get 706.001
If a cylinder is 3 inches tall and has a diameter (distance across the base) of 4 inches, what is the diagonal length inside the cylinder?
PLEASE HELP THIS IS URGENT
It’s number 2
Answer:the last one
Step-by-step explanation: if his measurement is 8 inches and the M.A.D is 4 inches the others will range less than his.
if someone could answer at least one for me that would be awesome! TYYY :D
Answer:
1. 672 inches
Step-by-step explanation:
Question #1
The formula for the volume of a triangular prism is:
V = \(\frac{bh}{2}\)
Where V is the volume, b is the area of the base, and h is the height. You are given the volume and the height. Plug those numbers into your equation.
\(4704 = \frac{b(14)}{2}\)
Now, solve for b. To do this, you must isolate the variable b.
The first step to do this is to multiply both sides by 2. This will get you:
4704(2) = 14b
9408 = 14b
Now, divide both sides by 14 to get:
672 = b.
Therefore, the area of the base is 672 inches.
Question #2
To solve this problem, separate the figure into 2 shapes. You have a triangle with a base of 6 cm and a height of 6 cm, as well as a semicircle with a radius of 3 cm.
After you do this, find the area of each shape separately.
The formula for the area of a triangle is:
\(A = \frac{bh}{2}\),
where A is the area, b is the length of the base, and h is the height. You know the base and the height, so plug those into your equation. You will get:
\(A = \frac{6*6}{2}\\\\A = \frac{36}{2}\\\\A = 18\)
Now you know that the area of the triangle is 18 cm^2.
Let's find the area of the semicircle.
The formula for the area of a semicircle is:
A = \(\frac{1}{2}\)π\(r^2\)
You know the radius, so plug that in to get:
A = \(\frac{1}{2}\)π(\(3^2\))
A = \(\frac{1}{2}\)π(9)
Simplify this to get:
A = 4.5π.
Now, either multiply 4.5 by π to get:
14.1371669412 cm^2
or, multiply 4.5 by 3.14 to get:
14.13 cm^2.
Then, add the area of the triangle, 18 cm^2, by the area of the triangle, 14.13, to get:
32.13 cm^2.
Hope this helps!
In 2 - 4 sentences explain where you might see and use scale factoring in your everyday life and how it is useful.
Answer:
2-4--2
Step-by-step explanation:
Answer:
An example of scale factoring that could be used in everyday life is when modeling. When modeling and object you don't make it, for example, 10 feet because that cannot fit on a computer screen. So when on a computer you see a much smaller-scale version.
Help please. I need 5 percent in khan
Answer: 1
Identify the point on the axis where x = -9, and find the correlating portion of the function above or below that axis. In this case, the function is equal to 1 when x is equal to -9.
Answer:
y= 1
Step-by-step explanation:
You simply need to look at the graph. When we look at the x-axis and look at -9, the line graphed (y-axis) is at 1. So point (-9,1) shows us our answer!
Look at my image below for more help!
Hope it helps!
can you help me find the intercepts
Plz help! read the instructions and write a proper answer and if you don't i will report you! And the first one to answer right will get a brainliest!
Answer:
1 = 0.61, 2 = 1.13
Step-by-step explanation:
The first is 25 + 25 + 10 + 1. This is 61 cents which is 0.61 of 1 dollar. The second is 100 + 10 + 1 + 1 + 1. This is equal to 113, 0r 1.13
BRAINLIEST PLEASE
Please help! Thank you!
Answer:
525
Step-by-step explanation:
If it's just asking to find the average of heads then times it by 20 then just do 32+28+21+24 to get 105 and divide it by 4 to get 26.25 then times it by 20 since this is the average of 50 throws and it's asking for the average of 1,000 throws which is 525
Help pls. I'll mark as brainlist.
1 feet = 12 inches
So, it's proportional2. The number of cookies baked and the minutes in the ovenSo, it's not proportional3. One bread needs a fixed grams of flourSo, it's proportional4. Since s = vtSo, it's proportional5. One gallon of gasoline cost's a fixed prince.So, it's proportionalNote : We just need to judge whether it accords with "y = kx"
{Proportional relationship}
Each floor of a parking garage can hold 90 cars. When all of the floors are full, there are 450 cars in the garage altogether. What fraction of the cars is parked on the ground floor?
90 cars out of 450
90 / 450 = 1/5
I guess the number of floors is 5
PLEASEEEEEEE HELPPPPPPPP
Answer:
10
3
6
-1
3
Step-by-step explanation:
Which one of these shapes is not like the others? Explain what makes it different by representing each width and height pair with a ratio.
Answer: C
Step-by-step explanation: because you it has the greatest with an ration is 4 by 8
CORRECT ANSWERS ONLY PEEPS- this is 7th grade math on khan academy and if ur answer is incorrect, ill report yalll
Answer:
2
Step-by-step explanation:
proportional relationship: must be straight line and go through (0, 0).
\(\quad \huge \quad \quad \boxed{ \tt \:Answer }\)
\(\qquad \tt \rightarrow \: C. 2 \)
____________________________________
\( \large \tt Solution \: : \)
Proprtional relationship can be depicted as :
\(\qquad \tt \rightarrow \: y \propto x\)
[ to get rid of proportionality sign, we use constant c ]
\(\qquad \tt \rightarrow \: y = cx\)
Now, conclusion can be made that the shown equation represents a straight line.
And the graph has two straight lines, which means proportional relationship is shown by Two members
Answered by : ❝ AǫᴜᴀWɪᴢ ❞