Answer:
Only B
Step-by-step explanation:
A has 2 pairs with the x as the number 2, so they are not functions.
B has all independent pairs with their own numbers
So only B is the correct answer.
2. In a certain school, there are 7 teachers for every 252 students. If there are 468 students, how many
teachers are needed?
Answer:
66.6
Step-by-step explanation:
If 7 teachers for 252 student
We divide 468÷7= 66.6
66.6 teacher
Here you are
The difference between five and a number squared
Answer:
5 and a number squared
n could be represented as a number
difference is subtraction
5-n squared
The difference between 5 and a number squared is 5 - x².
What are squares and cubes ?When a number is multiplied by it self once we call it a square and when a number is multiplied by it self twice we call it cube of that number.
for example 5 is multiplied by it self once = 5x5 = 5²
5 is multiplied by it self twice = 5x(5x5) = 5x5² = 5³
Let the given number is x , So the difference between 5 and a number squared is = 5 - x²
Learn more about squares and cubes here :
https://brainly.com/question/11473033
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A customer opens a checking account and a savings account at a bank. They will deposit a maximum of $600, some in the checking account and some in the savings account. (they might not deposit all of it and keep some money as cash if the coustomer deposits $200 in their checking account =, what can you say about the amount they deposit in their savings account
Answer:
x +y ≥ 600
This would be the inequality this is probably wayy late sorry :(
I need help fast .....
Answer:
(0,6)
Step-by-step explanation:
So x=0, so plug in 0 for x. 5(0) + 6 - (0)^2 = 6
Cost of admission to a town fair was $8 for adults and $5 for children. If 206 people
attended the fair, and ticket sales totaled $1408, how many adult tickets were sold?
Help
Answer:
126 adult ticketsStep-by-step explanation:
Step one:
let the number of adults be x
and the number of children be y
cost of tickets $8 for adults and $5 for children
total tickets is 206
total money made=$1408
Step two:
The system of equation is
x+y=206--------1
8x+5y=1408-----2
from 1 x=206-y
put x=206-y in equation 2 we have
8(206-y)+5y=1408
1648-8y+5y=1408
-3y=1408-1648
-3y=-240
divide both sides by -3
y=80 children tickets
put y=80 in x+y=206--------1
x+80=206
x=206-80
x=126 adult tickest
126 adult tickest
8. Separate 84 into two parts such that one part will be 12 less than twice
the other.
Answer:
x + (2x-12) = 84
x = 32
Step-by-step explanation:
you can say (part 1) + (part 2) = 84
one part is x (a variable) and
other part is 12 less than twice the other: when it says "12 less" is " - 12" and twice of part one 2x, you can say (2x - 12)
(part 1) + (part 2) = 84
x + (2x-12) = 84
3x - 12 = 84
3x = 96
x = 32
(part 1) + (part 2) = 84
(32) + (2*32 - 12) = 84
(32) + (52) = 84
Arrange the four numbers shown greatest to least -1.25, -3/10, 1 2/5, -0.03
Answer:
−1.25, −310, -0.03, 125
Step-by-step explanation:
Answer:
−1.25, −310, -0.03, 125
Step-by-step explanation:
What is the approximate length of the missing side of a right triangle with hyptonenuse of 16
cm and other side of 15 cm?
Answer:
5.56cmStep-by-step explanation:
Step one:
given data
hyp=16cm
say the adjecent= 15
let the hypotenuse be z
and the adjacent be x, while the missing side, the opposite be y
by Pythagoras theorem
[tex]z^2=y^2+x^2[/tex]
[tex]z=\sqrt{x^2+y^2}[/tex]
substitute the values we have
[tex]16^2=y^2+15^2\\\\256=y^2+225\\\\256-225=y^2\\31=y^2\\\\y=\sqrt{31}[/tex]
[tex]y=5.56cm[/tex]
The other side is 5.56cm
during a 7 hour snowstorm it snows at a rate of 1 inch per hour for the first 2 hours, at a rate of 2 inches per hour four the next four hours and at rate of 1 inch per hour for the final hour. Write a piece wise function that gives the depth of the snow during the snowstorm.
Answer:
9 inches of snow fell in the 7-hour snowstorm.
Step-by-step explanation:
To find your answer write an equation to find your answer.
1 inch per hour for two hours 1(2)
2 inches per hour for four hours 4(2)
and 1 inch in the last hour
so add those up
1(2)+4(2)+1
2+8+1
9
what's the slope of (-3,8) and (3,8)
Answer:
The slope is 0
Answer:
0
Step-by-step explanation:
In this, the x value is the only one changing, not the y ones. So, if the x values change, and the y values don't, you get a horizontal line. A horizontal line has a slope of zero.
Hope I helped!!!!
Kayla gets on the elevator on the ground floor. She goes down 2 floors, up 5 floors, down 1 floor, up 3 floors, down 5 floors, and up 6 floors. What floor is she on?
Answer:
I belive its the 6th floor, although i did the mathb in my head. I apologize if it is incorrect ;-;
Step-by-step explanation:
Answer:
6th floor
Step-by-step explanation:
Starting on the ground floor, we will reference this point as the 0th floor. From there she goes:
down 2 floors (0 - 2) | -2 |
up 5 floors (-2 + 5) | 3 |
down 1 floor (3 - 1) | 2 |
up 3 floors (2 + 3) | 5 |
down 5 floors (5 - 5) | 0 |
and up 6 floors (0 + 6) | 6 |
Therefore... in the end she lands on the 6th floor
What is greater 4.5 or 3.75
Answer:
4.5
Step-by-step explanation:
4.5>3.75
If we forgot about the decimals, we would have 4 and 3, and 4 is automatically larger; even with the decimals.
Hope this helps!
-AxekickNebulite
How can you tell by looking at a graph if there is a proportional relationship?
Answer:
as x increases y increases, as x decreases y decreases, the ratio always stays the same..represents a straight line through the origin.
Two angles are supplementary. If the measure of the first angle is 88° what is the measure of the second angle?
Answer:
92
Step-by-step explanation:
Answer: The second angle is 92°
Step-by-step explanation: Supplementary angles add up to 180 so subtract 88 from 180 and you get 92
George has $6.40 in nickels and dimes. If he has
32 more nickels than dimes, how many of each type
of coin does he have?
Answer:
George has 64 nickel and 32 dimes.
Step-by-step explanation:
Normally, we have:
One nickel = 5 cents
One dime = 10 cents
One dollar = 100 cents
Therefore, total number of cents that George has can be calculated as follows:
Total number of cents = $6.40 * 100 = 640 cents
Based on the above, we have:
640 cents = 640 / 5 = 128 nickel
640 cents = 640 / 10 = 64 dimes
Therefore, we have:
128 nickel = 64 dimes
Divide through by 2 in order to share 640 cents equally, we have:
128 nickel / 2 = 64 dimes / 2 => 64 nickel = 32 dimes
Since 64 minus 32 is equal to 32, it therefore implies that George has 64 nickel and 32 dimes.
what is 3.5 years as a decimal
Answer RIGHT AND I WILL GIVE BRAINLIEST
Answer:.35
Step-by-step explanation:So, 3.5 becomes 03.5. Now, you can move decimal point: 03. 5 becomes . 035 or 0.035.
Find the equation of this line
Alex wants to buy packs of gaming cards until she gets a certain card she wants, but she only has enough money to buy at most two packs. Suppose that each pack has a 20\%20%20, percent chance of containing the card she wants, and each pack costs \$10$10dollar sign, 10. The table below displays the probability distribution of XXX, the amount of money Alex spends on these cards. X=\text{money spent}X=money spentX, equals, start text, m, o, n, e, y, space, s, p, e, n, t, end text \$10$10dollar sign, 10 \$20$20dollar sign, 20 P(X)P(X)P, left parenthesis, X, right parenthesis 20\%20%20, percent 80\%80%80, percent Given that \mu_X=\$18μ X =$18mu, start subscript, X, end subscript, equals, dollar sign, 18, calculate \sigma_Xσ X sigma, start subscript, X, end subscript. Round your answer to two decimal places.
Answer:
4 dollars
Step-by-step explanation:
The standard deviation of the pack of gaming cards is 4
The entry on the table is given as:
x | $10 | $20
P(x) | 20% | 80%
Also, we have:
[tex]\mu_x = 18[/tex]
The standard deviation of a dataset is calculated using:
[tex]\sigma_x = \sqrt{E(x^2) - \mu_x^2}[/tex]
Where:
[tex]E(x^2) = \sum x^2 \times P(x)[/tex]
This gives
[tex]E(x^2) = 10^2 \times 20\% + 20^2 \times 80\%[/tex]
[tex]E(x^2) = 340[/tex]
[tex]\sigma_x = \sqrt{E(x^2) - \mu_x^2}[/tex] becomes
[tex]\sigma_x = \sqrt{340 - 18^2}[/tex]
[tex]\sigma_x = \sqrt{340 - 324}[/tex]
[tex]\sigma_x = \sqrt{16}[/tex]
Take positive square root
[tex]\sigma_x = 4[/tex]
Hence, the standard deviation of the dataset is 4
Read more about standard deviations at:
https://brainly.com/question/475676
The endpoints of are A(2, 2) and B(3, 8). is dilated by a scale factor of 3.5 with the origin as the center of dilation to give image . What are the slope (m) and length of ? Use the distance formula to help you decide: .
A.
m = 21, A'B' = 3.5
B.
m = 6, A'B' =
C.
m = 6, A'B' = 3.5
D.
m = 21, A'B' =
Answer:
B
Step-by-step explanation:
Answer:
b
Step-by-step explanation:
Help Pls I cant do it Its due today
a number between 61 and 107 that is a multiple of 3, 6, and 7
Answer:
42?
Step-by-step explanation:
Answer:
84
Step-by-step explanation:
Multiples of 3 in this range: 63, 66, 69, 72, 75, 78, 81, 84, 87, 90, 93, 96, 99, 102, 105
Multiples of 6 in this range: 66, 72, 78, 84, 90, 96, 102
Multiples of 7 in this range: 63, 70, 77, 84, 91, 98, 105
If we look at these multiples, we see that 84 is the only number to show up in every list. Meaning, the answer is 84.
equation of the line that passes through (1,2) and is perpendicular to the line Y equals 1/3 x + 4
Answer:
[tex]y = -3x + 5[/tex]
Step-by-step explanation:
The slope of a perpendicular line to the original equation is the opposite reciprocal of the slope of the original equation. This makes the opposite reciprocal -3, so the slope of the perpendicular line is -3. Now that we have found the slope, we will put it into the formula for slope, y = mx + b. This results in getting y = -3x + b.We know the values for x and y, (1,2) respectively. Plug these values into y = -3x + b. 2 = -3(1) + bb = 5This means that 5 is your y intercept and goes into place for b Therefore, your resulting equation is y = -3x + 5Consider the function shown on the graph. Complete the statements to make them true.
Answer:
it's not proportional
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The figures show the dimensions of a tennis court and a basketball court given in terms of the width, x (in feet), of the tennis court.
a. Write an expression for the perimeter of each court.simplify expressions
A. Tennis: ( YOUR WORK)
A. Basketball: (YOUR WORK)
b. If x=36 feet wide. Find length and width of each court.
B. Tennis: (YOUR WORK)
B. Basketball: (YOUR WORK)
Answer:
A. Tennis: 6x+12
A. Basketball: 7x+36
B. Tennis: Length- 36, Width- 72
B. Basketball: Length- 50, Width: 94
Step-by-step explanation:
A. Tennis
perimeter equation: P= 2L+2W
P=2(x)+2(2x+6) simplify
P= 2x+4x+12
P=6x+12
A. Basketball
P= 2(1/2x+32)+2(3x-14) simplify
P=7x+36
B. Tennis and basketball
just plug in 36 for x for the original lengeth and width equations for each court
Answer:
I think A basketball.
select the following inequality and graph its solution set: 8(1-4x) >40
Answer:
-1
Step-by-step explanation:
Hope this helps
Add. Write your answer as a fraction in simplest form.
−4 5/9+8/9=
Answer:[tex]-\frac{11}{3}[/tex]
Step-by-step explanation:
Convert the mixed number to an improper fraction
[tex]-\frac{49}{9}[/tex]+[tex]\frac{8}{9}[/tex]; Then calculate the sum
The answer is [tex]-\frac{11}{3}[/tex]
If 4x-3=13, then 4x=16
Answer:
True!
Step-by-step explanation:
4x - 3 = 13
Add 3 to both sides;
4x = 16
Divide both sides by 4;
x = 4
k+6=3
what is the solution of k?
Answer:
K=-3
Step-by-step explanation:
Answer:
-3
Step-by-step explanation:
Lets solve:
6+k=3
1. bring the opposite of 6 to the other side
k=3-6
2. simpliy
k=-3
Task 5: A weather station on the top of a mountain reports that the temperature is currently 0°C and has been falling at a constant rate of 3°C per hour. If it continues to fall at this rate, find each indicated temperature. What will the temperature be in 2 hours? Explain or show your reasoning.
Answer:
Step-by-step explanation:
To find answer,
We multiply 2 hours by the decrease, which is 3 degrees.
2*3=6 degrees
Now this means it will decrease 6 degrees in 2 hours, and starting from the start we do
0-6= -6 degrees in 2 hours
For five hours, we do
5*3=15
Now do the same
0-15= -15 degrees
2. Jan designs a new logo for Kim's website. Kim pays Jan $54 for 6 hours of work.
How much money does Kim pay Jan per hour?
Answer:
9
Step-by-step explanation:
54 divided by 6.
