Answer:
Heidi wants to compute:
17 - 9.
First, she adds to get 10, (we want to subtract 10, this is easier than subtracting 9) then she can do:
17 - 9 + 0
adding zero does not change the sum
1 - 1 = 0
then:
17 - 9 + 0 = 17 - 9 + 1 - 1
Now we can do:
17 - 9 - 1 + 1
17 - (9 + 1) + 1
17 - 10 + 1
(17 - 10) + 1
7 + 1 = 8
Then, first she needs to add -1, in order to subtract 10, and then she must add 1. As we added a number and its inverse, in total we added zero, so the sum did not change, but was easier to compute.
Then, you need
need help wih this
i will give brainliest and 15pts
Answer: what you need to do is multiply 3 times 1 and add 2 to the sum that you get which would be 5/3 for the first one because you keep the same denominator! Just multiply the denominator the bottom number and add the numerator the top number to your sum that you got from multiplication! Do that for all of them and you should get an improver fraction!
:)
Finding the reciprocal is easy just flip the numbers I’m in 6th grade I learn this already!
For example just flip 3/7 to 7/3
Answer:
1. 5/2 2. 18/5 3. 35/5 4. 38/3 5. 72/7 1. 7/3 2. 3/8 3. 1/9 4. 8/33 5. 3/44
Step-by-step explanation:
to make mixed numbers into improper fractions, you multiply the whole number by the denominator, and add the numerator. you take that answer and make it the numerator in the new improper fraction, and keep the same denominator.
to take the reciprocal switch the numerator and the denominator.
use these to correct me if i messed up,, i couldn't see the numbers that clearly
The senior class sells movie tickets to students and teachers. The student tickets cost $4 each and teacher tickets cost $8 each. If they earned only $44, how many possible combinations of student and teacher tickets could have been sold?
Answer: There are 6 possible combinations:
Student | Adult . $
11 | 0 . 44 + 0
9 | 1 36 + 8
7 | 2 28 + 16
5 | 3 20 + 24
3 | 4 12 + 32
1 | 5 4 + 40
Step-by-step explanation:
We can use an equation 4x + 8y = 44
Graph it and see where the graphed line crosses the grid lines at integers.
"three times a number is greater than or equal to 12 and less than 21"
Complete the following steps to receive full credit for this question:
• The inequality translated in numerical form
• Your work solving the inequality
• The solution graphed on a number line
• The solution in set notation
• The solution in interval notation
Answer:
The required inequality is: 12 ≤ 3x < 21
Step-by-step explanation:
We are given: three times a number is greater than or equal to 12 and less than 21
We need to answer following questions:
1) The inequality translated in numerical form
Let number = x
12 ≤ 3x < 21
2) Your work solving the inequality
We need to find value of x. Divide the inequality by x
4 ≤ x < 7
3) The solution graphed on a number line
It is shown in figure attached.
4) The solution in set notation
The set notation is: Considering x belongs to natural numbers N
{∀ x|x∈N, 4 ≤ x < 7}
5) The solution in interval notation
The interval notation is: [4,7)
because we have 4 less than equal to x and x is less than 7
A gym floor has a perimeter of 1,935 feet, what is the perimeter in yards? (PLEASE HELPPP!!!!! Is with time!!!!)
Answer:645yards
Step-by-step explanation: 1 foot is 0.33333333 and math also the Convert units tab in google
Write the equation of the line.
y=-2/3x + 4
y =2/3x-4
Y=3/2x-4
y = -3/2x +4
(Hat Check problem). n people enter the restaurant and put their hats at the reception. Each person gets a random hat back when going back after having dinner. Find the expected value and variance of the number of people who get their right hat back.
Answer:
E[X] = 1
Var[X] = 1
Step-by-step explanation:
We are told that n people enter the restaurant and put their hats at the reception.
This means that there are n hats.
Also, we are told that eeach person gets a random hat back when going back after having dinner.
Thus, each person will pick a hat uniformly at random and will get a right hat back with the probability: 1/n.
The expectation is linear even though the random variables are dependent. Thus, the expected mean of the total number of persons who get their right hat back is: E[X] = n × 1/n = 1
Now, the variance in hat problem is given by;
Var[X] = E[X²] - E[X]²
This gives;
Var[X] = E[X²] - 1
Now, E[X²] is expressed as;
E[X²] = n(1/n) + n(n - 1)•(1/n)•(1/(n - 1))
E[X²] = 1 + 1
E[X²] = 2
Thus;
Var[X] = 2 - 1
Var[X] = 1
There is 2 parts. but , help
Answer: B
Step-by-step explanation:
How is symmetry in the real world different from symmetry in geometry?
Answer:
In geometry symmetry has to measure to the same but in real life if they are close enough it is good enough
Suppose a least squares regression line is given by y= 4.302x - 3.293. What is the mean value of the response variable if x = 20?
Answer:
i think this is the answer
Step-by-step explanation:
[tex]4.302(20) - 3.293 = 82.747[/tex]
The mean value of the response variable is 82.747.
What is Regression line?Linear Regression calculates the equation of the line that is the best fit for the given data points. Linear regression models a linear relationship between the input variable x and the output variable y.
Here, given regression line;
y= 4.302x - 3.293 ...............(i)
Now, value of x is given; x = 20
Put the value of x in equation (i), we get
y = 4.302 X 20 - 3.293
y = 86.04 - 3.293
y = 82.747
Thus, the mean value of the response variable is 82.747.
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PLS HELP ASAP I WILL MARK BRAINLIEST THIS IS DUE SO SOON DONT ANSWER IF NOT SURE
Answer:
D (7 floors)
Step-by-step explanation:
You start off 4 floors below the start (-4) and you go up to floor 3. Therefore you go up 4 floors to floor 0 then 3 more to floor 3. 4+3=7
I hope this helps and good luck!
Surface area of 4m 5m 6m :)
Answer:
15 m, but it depends on your shape?
Step-by-step explanation:
cuboid?
if so
area= 2(lb+bh+lh)
2(4*5+5*6+4*6)
2(74)
answer = 148 m sq.
zach says that the expressions 6x - 36 and 3(2x -12) are equivalent
Answer:
True
Step-by-step explanation:
When you distribute the 3, you get x(2x3)-(12x3)
2x3=6
12x3=36
so 6x-36
and that is equivalent to the first expression.
A family of four went to dinner at a local restaurant. Three of the family members ordered the special dinner that costs $12.88 each and the fourth family member ordered the hamburger and fries combo that costs $6.78. If they want to leave a 15% tip, which of the following expressions represents the amount of tip they should leave?
A. (12.88+6.78)×0.15
B. (3×12.88+6.78)×0.15
C. 3×12.88+6.78
D. [3×(12.88+6.78)]×0.15
Type the correct answer in the box.Use numerals instead of words. If necessary, use / for the fraction bar.ΔABC is a right triangle in which ∠B is a right angle, AB = 1, AC = 2, and BC = .
cos C × sin A =
Answer:
3/4
Step-by-step explanation:
The value of cos C x sin A is 3/2.
What is a triangle?It is a two-dimensional figure which has three sides and the sum of the three angles is equal to 180 degrees.
We have,
AB = 1
AC = 2
BC = √3
Now,
∠B = 90°
∠A = 60°
∠C = 180 - (90 + 60) = 180 - 150 = 30°
cos C = cos 30° = √3 / 2
sin A = sin 60° = √3/2
Now,
Cos C x Sin A
= √3/2 x √3 / 2
= 3/2
Thus,
The value is 3/2.
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Due today at 12:59!!!!!
Answer: Im confused?
Step-by-step explanation:
The value 1 is a solution for x^2-6x+5=0
A. True
B. False
Answer:
The complex solution would be: X = 5,1
Step-by-step explanation:
Answer:
x=1
TRUE because Factoring x2-6x+5
The first term is, x2 its coefficient is 1 .
The middle term is, -6x its coefficient is -6 .
The last term, "the constant", is +5
Step-1 : Multiply the coefficient of the first term by the constant 1 • 5 = 5
Step-2 : Find two factors of 5 whose sum equals the coefficient of the middle term, which is -6 .
-5 + -1 = -6 That's it
Step-3 : Rewrite the polynomial splitting the middle term using the two factors found in step 2 above, -5 and -1
x2 - 5x - 1x - 5
Step-4 : Add up the first 2 terms, pulling out like factors :
x • (x-5)
Add up the last 2 terms, pulling out common factors :
1 • (x-5)
Step-5 : Add up the four terms of step 4 :
(x-1) • (x-5)
Which is the desired factorization
Can anyone help w these questions all of em I’m really confused and I’m 6th grade
Answer:
5. 3/4
7. -16
10. 32/243
11. a^3
12. b^4 and c^2
13. A mistake would occur if you multiplied 2/3 by five instead of squaring it by 5.
Step-by-step explanation:
Evaluate the function at the given value
f(x) = 4.753(0.9421)^x
x = 5
Answer:more info pl
Z
Step-by-step explanation:
What is the quotient of
3/4 and 1/5
Answer:
3.75
Step-by-step explanation:
Select all that apply.
Which of the following are proportions?
25/10 = 5/2
3/4 = 8/10
2/8 = 3/12
3/4 = 15/20
Answer:
Step-by-step explanation:
3/4=15/20 are proportions
For every 3 you get a 4
So 5*3= 15 and 5*4=20
25/10 = 5//2 is another one.
Answer:
25/10 = 5/2
3/4 =15/20
Step-by-step explanation:
0.2x+2.7x-8.1=6.9+1.1x
Help
Answer:
x=25/3
Step-by-step explanation:
I'm not sure if it is correct but. . .
Answer: x=25/3
Step-by-step explanation:
Find the variable:
24 + 2p = 33
Answer:
p= 9/2
Step-by-step explanation:
consider the following system of equations:2x+3y=45,x+y=10 what is the x value of the solution for this system?
Step-by-step explanation:
The answer for x in the solution is -5
9.2x8.9= please put shown work on it please and thank you if you do then i will mark you as the brainist
Answer:
81.88 is the answer
Step-by-step explanation:
How would you describe the relationship between the real zero(s) and x-intercept(s) of the function
f(x) =
3x(x - 1)
x2(x+3)(x + 1)
When you set the function equal to zero, the solution is x = 1; therefore, the graph has an x-intercept of (1,0).
O When you set the function equal to zero, the solutions are x = 0 or x = 1; therefore, the graph has x-intercepts at
(0, 0) and (1,0).
O When you substitute x = 0 into the function, there is no solution, therefore, the graph will not have any X-
intercepts.
Since there are asymptotes at x = -3, x = -1, and x = 0, the graph has no x-intercepts and therefore, no real
zeros.
The description of the relationship between the real zero(s) and x-intercept(s) of the function should be option A.
Relationship between the real zero(s) and x-intercept(s) of the function:Since it is given that
f(x) = 3x(x - 1)
x2(x+3)(x + 1)
Also, the function should be set out and equivalent to zero when x = 1
and, the graph should have an x-intercept of (1,0).
Therefore, the option A is correct.
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Answer:
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Step-by-step explanation:
Find the difference
5/5 - 2/10
Answer:
0.8
Step-by-step explanation:
Answer:
8/10
Step-by-step explanation:
5/5 is equivalent to 1 whole or one.
So all your suppose to do is 1 minus 2/10 which is 8/10.
Hope that helps
↖(^ω^)↗
Every night, Eloise reads 40 pages. How many total pages does she read at night during the 30 days of November?
Answer:
1200
Step-by-step explanation:
Answer:
40 x 30 = 1200 pages
Step-by-step explanation:
I hope this helps :)
What percent is 8 out of 32?
Answer:
25%
Step-by-step explanation:
8/32= 25%
The total cost in dollars for Larry to have his birthday party at a local
Trampoline Park can be found using the function t = 6.95p + 29.95, where p is
the number of people who will attend the party. If Larry only has $70 to spend on
his party, which of the following could represent the domain of the function?
Answer:
[tex]0 \leq p < 6[/tex]
Step-by-step explanation:
Given
[tex]t = 6.95p + 29.95[/tex]
[tex]Amount = 70[/tex]
Required
Determine the domain
First, we need to solve for p
Substitute 70 for t in [tex]t = 6.95p + 29.95[/tex]
[tex]70 = 6.95p + 29.95[/tex]
Collect Like Terms
[tex]6.95p = 70 - 29.95[/tex]
[tex]6.95p = 40.05[/tex]
Solve for p
[tex]p = 40.05/6.95[/tex]
[tex]p = 5.76[/tex]
This implies that Larry can not invite up to 6 people.
Hence, the domain can be represented as: [tex]0 \leq p < 6[/tex]
fill in the blanks on the Trapezoid