Answer:
(u + 7) + 13 = u + (7 + 13)
Step-by-step explanation:
The associative property moves the parenthesis. We are doing addition , so we need to look for the problem that moves the parenthesis on addition.
Solve equation for z
Answer:
z = 7
Step-by-step explanation:
9z + 4 / 5 - 8 = 5.4
Add 8 to both sides.
9z + 4 / 5 = 13.4
Multiply 5 by both sides.
9z + 4 = 67
Subtract 4 from both sides.
9z = 63
Divide both sides by 9.
z = 7
Answer:
7 (rounded up)
Step-by-step explanation:
9z+4/5=13.5
Multiply both sides by 5
9z+4=67.5
Subtract both sides by 4
9z=63.5
Divide both sides by 9
z=7 (rounded up)
2−1/2n=3n+16
n=3n+16
Answer:
The answer is
n=5 3/5
Step-by-step explanation:
first collect the like terms:
2-1/2n=3n+16
then...
3n-1/2=16-2
==2 1/2n = 14
===n=5 3/5
A shop has 15% sale. Originally a computer cost £275. How much does the computer cost in the sale?
Answer:
= 233.75
Step-by-step explanation:
To find the discount, we multiply the original price by the percent off
discount = 275* .15
= 41.25
To get the sale price, take the original price and subtract the discount
sale price = 275-41.25
= 233.75
Select all that apply question! See picture
Which of the following is a complex number?
-7
2 + √3
4 + 9i
pie (no symbol available)
Answer:
The correct answer is option C , 4 + 9i
Step-by-step explanation:
A complex number is the one which has a real number and an imaginary number.
In all the example given , option C 4 + 9i has "i" which signifies the imaginary number which nothing but a negative square root.
what is the midpoint of ab with endpoints A(3,2) and B (8,14
Answer:
( [tex]\frac{11}{2}[/tex], 8)
Step-by-step explanation:
Find the midpoint using the midpoint formula
midpoint = [ [tex]\frac{1}{2}[/tex](3 + 8), [tex]\frac{1}{2}[/tex](2 + 14)] = ( [tex]\frac{11}{2}[/tex], 8)
Answer: (5.5, 8)
Step-by-step explanation:
We know that midpoint (x,y) of a line XY having points having points [tex](x_1,y_1)[/tex] and [tex](x_2,y_2)[/tex] is given by :-
[tex]x=\dfrac{x_1+x_2}{2}\ ;\ y=\dfrac{y_1+y_2}{2}[/tex]
Then similarly, the midpoint of AB with endpoints A(3,2) and B (8,14) will be :_
[tex]x=\dfrac{3+8}{2}\ ;\ y=\dfrac{2+14}{2}\\\\\Rightarrow\ x=\dfrac{11}{2}\ ;\ y=\dfrac{16}{2}\\\\\Rightarrow\ x=5.5\ ;\ y=8[/tex]
Hence, the midpoint of AB with endpoints A(3,2) and B (8,14) = (5.5, 8)
Margo has a coin collection. She was given 1 coin as a gift, and she adds 3 coins per year. Which of the graphs below represents Margo's coin collection?
A) graph of line going through 1, 2 and 3, 4
B) graph of line going through 1, 1 and 3, 3
C) graph of line going through 1, 4 and 3, 10
D) graph of line going through 1, 2 and 2, 5
Answer:
Option C) graph of line going through 1, 4 and 3, 10
Step-by-step explanation:
Let y equal to Margo's coin collection
Let x equal to number of years
At the begining x=0, y=1 → Point=(x,y)→Point=(0,1)
She adds 3 coins per year, then y=1+3x
At x=1, y=1+3(1)=1+3→y=4→Point=(x,y)→Point=(1,4)
At x=3, y=1+3(3)=1+9→y=10→Point=(x,y)→Point=(3,10)
The graph of line going through (1, 4) and (3, 10), then the option C is the correct.
The box plots below show the ages of college students in different math courses
Answer:
4. The mean and median age are most likely to be same for the students in Math 1.
Step-by-step explanation:
We have been given two box plots that show the ages of college students in different math courses. We are asked to choose the true statement about these box plots.
1. The median age of the students in math 1 is greater than the median age of the students in math 2.
We can see from our given box plots that median age for both Math 1 and Math 2 is 19 that is represented by vertical middle line of box, therefore, 1st statement is not true.
2. The median age of the students in math 1 is less than the median age of the students in math 2.
Since median ages for students in Math 1 and Math 2 are same (19), therefore, 2nd statement is not true.
3. The mean and median age are most likely same for both sets of data.
We can see that box plot for ages of Math 1 students is symmetric, therefore, both mean and median will be same for Math 1 students.
The box plot representing ages of Math 2 students is skewed right as it has an outlier as 23, therefore, its mean age will be greater than median age.
Therefore, 3rd statement is not true either.
4. The mean and median age are most likely to be same for the students in Math 1.
We can see that box plot representing ages for Math 1 students is symmetric and its whiskers are equidistant from median. So both mean and median age are same that is 19, therefore, 4th statement is true.
Answer:
in shorter terms, the answer is d
Step-by-step explanation:
On the Mertler's vacation to Florida, they drove 180 miles in 3 hours before stopping for lunch. After lunch they drove 120 miles in 2 hours before stopping for gas. Are these rates equivalent? Explain your reasoning.
Choose the number below that represents the digit in the tens place of the number 128
A). 10
B). 1
C). 2
D). 8
the answer is C) 2. the 8 is in the ones place, 2 is in the tenths, and 1 is in the hundreths.
Tickets to a play cost $4 in advance and $5 at the door. The theater club president wants to raise at least $400 from the ticket sales. If the club sells 40 tickets in advance, what is the least number of tickets the club needs to sell at the door to reach the president’s goal?
Answer:
48 tickets
Step-by-step explanation:
I just had this question on a test and got it right! So this is how i did it:
if the advance price is $4, and you sell 40 tickets in advance, you do 40 times 4.
40 x 4 = 160
so you subtract the $160 from 400 and then that brings you $240 dollars left.
*these 240 dollars will be tickets bought at the door*
to determine the amount of tickets that need to be bought left, you need to do 240 divided by 5.
and that will give you a total of:
a least amount of 48 tickets
The least number of tickets the club needs to sell at the door to reach the president’s goal, 48.
What is word problem?A word problem is a few sentences describing a 'real-life' scenario where a problem needs to be solved by way of a mathematical calculation.
Given that, Tickets to a play cost $4 in advance and $5 at the door. The theater club president wants to raise at least $400 from the ticket sales. If the club sells 40 tickets in advance,
Since, the cost if advance ticket is $4 and they already sold 40,
Therefore, collected cost = 4 × 40 = $160
Now, cost to collect yet = 400 - 160 = $240
Cost of tickets at the door = $5
Therefore, tickets to be sold to meet the goal = 240/5 = 48
Hence, the least number of tickets the club needs to sell at the door to reach the president’s goal, 48.
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Can someone help me with these real quick?
1) write 13%20 as a decimal
2) write 7•7•7•7•7 in exponential form
3) *picture is attached
[tex]1)\\p\%=\dfrac{p}{100}\\\\13\%=\dfrac{13}{100}=0.13\\\\13\%\ of\ 20\ is\ 0.13\cdot20=2.6\\\\2)\\\underbrace{7\cdot7\cdot7\cdot7\cdot7}_{5}=7^5\\\\3)\\Use:\\a^n\cdot a^m=a^{n+m}\\\\\dfrac{a^n}{a^m}=a^{n-m}\\\\12.\ 6^2\cdot6^{-4}=6^{2+(-4)}=6^{2-4}=6^{-2}\\\\13.\ 2^{-3}\cdot2^{-2}=2^{-3+(-2)}=2^{-5}\\\\14.\ \dfrac{4^4}{4^2}=4^{4-2}=4^2}\\\\15.\ \dfrac{8^3}{8^{-2}}=8^{3-(-2)}=8^{3+2}=8^5[/tex]
Solve the equation 7h-5(3h- 8) = -72
Answer: h=14
Step-by-step explanation:
7h-5(3h-8)=-72
7h-15h+40=-72 > I distributed the -5(3h-8) to get rid of parenthesis
-8h+40=-72 > I combined the like terms 7h-15h
-8h=-112 > I subtracted 40 from both sides
h=14 > I divided -8 from both sides
The solution is h = 14.
What are Equivalent Expressions?These are the expressions which give the same or the equivalent result.On solving, both the expressions will get the same value.Given: Equation
7h - 5(3h - 8) = -72
Now, we will solve the equation for the value of h.
⇒ 7h - 5(3h - 8) = -72
⇒ 7h - 15h + 40 = -72
⇒ 7h - 15h = -72 - 40
⇒ -8h = -112
Dividing both sides by -8, we get:
⇒ h = 14
Therefore, the solution of the given equation is h = 14.
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how do i simplfy 2/56
Answer:
1/28
Step-by-step explanation:
think what two can be divided by it can only be divided by two
think if 56 can, it could so 2 divided by 2 is 1 and 56 divided by two is 28 so the answer is 1/28
The top deck of a boat is 9.5 feet above the surface of a lake, while the bottom of the boat is 24 feet below the surface of the lake. What is the vertical distance between the top deck and the bottom of the boat? Drag and drop the correct value into the box to complete the statement
The vertical distance is___________________ feet.
A. -33.5
B. -14.5
C. 14.5
D. 33.5
Answer:
The answer would D.) 33.5 because 9.5+24 is 33.5 and since vertical distance is always an absolute value, it will never be a negative number.
The vertical distance between the top and bottom of the boat is calculated by summing the distances above and below the lake's surface, which total 33.5 feet, making option D correct.
To calculate this, we consider that the top deck of the boat is 9.5 feet above the surface of the lake, while the bottom of the boat is 24 feet below the surface. The total vertical distance would be the sum of these two values, as one needs to account for the entire distance the boat covers from top to bottom.
So, the calculation would be as follows: 9.5 feet + 24 feet = 33.5 feet. Therefore, the vertical distance between the top deck and the bottom of the boat is 33.5 feet. This makes option D the correct answer.
please help 5 pts
The Questions
An item sells for $40. the sales tax on the item is 8%. What is the sales tax and total cost?
Twenty four 750 milliliter bottles are shipping out of the warehouse. In total,how many liters were shipped
Answer:
18 L
Step-by-step explanation:
(a) Millilitres shipped
There are 750 mL/bottle.
Vol. shipped = 24 × 750
Vol. shipped = 18 000 mL
=====
(b) Litres shipped
1 L = 1000 mL
Vol. shipped = 18 000 × 1/1000
Vol. shipped = 18 L
A hudson valley farmer has 26 employees.He pays each employee $410 per week.After paying his workers for one week,the farmer has $162 left in his bank account.how much money did he have at first?
Hi there!
A valley farmer has 26 employees and he pays each of them $410 per week.
After paying them for one week he has $162 dollars left. We need to find how much money he had at first.
So the first step is to multiply $410 on 26 since he gives 410 dollars to each employee, which he has 26.
$410 · 26 = $10,660
So he had $10,660 before he paid the workers, but he still had $162 left. To find out his overall total of money he had we need to add $10,660 and $162 which will be $10,822.
The farmer had $10,822
Hope this helped!~
10 is increased to 35
What is the percent increase?
SUPER EASY AND URGENT!
Answer:
The percent increase is 250 percent
Step-by-step explanation:
To find the percent increase we use the formula
percent increase = (new-original)/original * 100
= (35-10)/10 * 100
= 25/10 *100
250
The percent increase is 250 percent
There is a 250% increase.
Work is attached in the image provided.
identify an equation in point-slope form for the line parallel to y=5x+2 that passes through (-6,-1)
Answer:
y = 5x + 29
Step-by-step explanation:
y=5x+2
Given equation is in the form of y=mx+b
Where m is the slope = 5
and b is the y intercept = 2
When the lines are parallel then their slopes are equal
So the slope of parallel line is also 5 (m=5)
Given that the line passes through (-6,-1)
We use point slope formula
y-y1= m (x-x1)
m=5, x1= -6, y1=-1
Plug in all the values
y - (-1) = 5(x-(-6))
y + 1= 5 (x+6)
y + 1= 5x + 30
Subtract 1 on both sides
y = 5x + 29
A ramp has a base that is 60 inches long and a height of 11 inches. Let x equal the length in inches of the slanted side of the ramp. What is the value of x?
Answer:
\\\90
Step-by-step explanation:
Answer:
61 inches
Step-by-step explanation:
took the test
PLEASE HELP WILL GIVE BRAINLIEST the number of students at north middle school is 1240 and is decreasing by 25 students per year. The number of students at south middle school is 800 and it is decreasing by 30 students per year. in how many years will the two schools have the same number of students?
Answer:
-88
Step-by-step explanation:
Let N(x) be the number of students at NMS for a certain number of years.
Let S(x) be the number of students at SMS for a certain number of years.
Let x be the number of years.
N(x)=1240-25x
S(x)=800-30x
When # of students is equal, N(x)=S(x). Therefore, we are looking for the value of x (# of years) when 1240-25x=800-30x
Subtract 1240 from each side
-25x=-440-30x
Add 30x
5x=-400
x=-88 years
Check your numbers.
identify the property that the statement illustrates
Answer:
6 units away from 0.
Step-by-step explanation:
when move to 6 you count the units.
The formula for the circumference of a circle is C = 2r. What is one-fourth of the circumference of a circle that measures 12 centimeters around? If necessary, use 3.14 for .
The formula of a circumference is:
[tex]C=2\pi r[/tex]
r - radius
or
[tex]C=d\pi[/tex]
d - diameter
We have d = 12cm. Substitute:
[tex]C=12\pi\ cm[/tex]
One-fourth of the circumference:
[tex]\dfrac{1}{4}C=\dfrac{1}{4}\cdot12\pi=3\pi\ cm\approx3\cdot3.14=9.42\ cm[/tex]
Answer: 9.42 cm.Marcia uses 5 ounces of chicken stock to make one batch of soup.She has a total of 400 ounces of chicken stock.How many batches of soup can Marcia make
Answer:
Marcia can make a total of 80 batches of soup
Step-by-step explanation:
400(total ounces)/5(ounces per batch)=80 batches
Answer:
80 batches of soup can Marcia .
Step-by-step explanation:
Given : Marcia uses 5 ounces of chicken stock to make one batch of soup.She has a total of 400 ounces of chicken stock.
To find : How many batches of soup can Marcia make.
Solution : We have given
Marcia uses 5 ounces of chicken stock = 1. batch of soup
Marcia uses 1 ounces of chicken stock = [tex]\frac{1}{5}[/tex].
Marcia uses 400 ounces of chicken stock = [tex]\frac{400}{5}[/tex].
= 80 batch of soup.
Therefore, 80 batches of soup can Marcia .
What value for the constant,h, in the equation shown below will result in an onfinite number of solutions? Equation: 6x+18=h(3x+9) Answer choices: a. -2 b.-3 c.2 d.3
Answer:
c.2
Step-by-step explanation:
6x+18=h(3x+9)
To have an infinite number of solutions, the left and right side must be equal
Distribute the h
6x+18 = 3xh +9h
6x = 3xh
Divide by x
6x/x = 3xh/x
6 = 3h
Divide by 3
6/3 =3h/3
2 =h
Lets verify
18 = 9h
Divide by 9
18/9 = 9h/9
2 =h
h must be 2
The height of a rectangular prism is found by dividing volume, V, by the base area, B. If the volume of the rectangular prism is represented by 6x2 – 2x + 8 and the base area is 2x – 4, which expression represents the height? 3x + 5 – 3x – 7 + 3x + 5 + 3x – 7 –
Answer:
[tex](3x+5)+\frac{28}{2x-4}[/tex]
Step-by-step explanation:
Since,
The volume of a rectangular prism = Base area × Height,
Given,
Volume of the rectangular prism = [tex]6x^2-2x+8[/tex]
Base area = 2x - 4
Let h be the height,
[tex]\implies 6x^2-2x+8=(2x-4)h[/tex]
[tex]\implies h = \frac{6x^2-2x+8}{2x-4}[/tex]
By long division ( shown below ),
[tex]h=(3x+5)+\frac{28}{2x-4}[/tex]
Which is the required expression that represents the height.
Answer:
[tex](3x+5) + \frac{14}{x-2}[/tex]
Step-by-step explanation:
We are given the following information in the question:
Volume of rectangular prism =
[tex]6x^2 - 2x + 8[/tex]
Area of base of prism =
[tex]2x -4[/tex]
Formula:
[tex]\text{Volume of Prism} = \text{Area of base}\times \text{Height of prism}\\\\\text{Height of prism} = \displaystyle\frac{\text{Volume of Prism} }{\text{Area of base}}[/tex]
Putting the values we, get,
[tex]\text{Height of prism} = \displaystyle\frac{6x^2 - 2x +8}{2x-4} = \frac{2(3x^2-x+4)}{2(x-2)}= (3x+5) + \frac{14}{x-2}[/tex]
Hence, the height of the prism is given by the expression [tex](3x+5) + \frac{14}{x-2}[/tex]
simplify this expression
17-a-2a-6+5a
please solve
Answer:
Answer: 2 a + 11
Step-by-step explanation:
Simplify the following:
5 a - a - 2 a - 6 + 17
Grouping like terms, 5 a - a - 2 a - 6 + 17 = (-a - 2 a + 5 a) + (17 - 6):
(-a - 2 a + 5 a) + (17 - 6)
-a - 2 a + 5 a = 2 a:
2 a + (17 - 6)
17 - 6 = 11:
Answer: 2 a + 11
The expression 17-a-2a-6+5a simplifies to 2a+11. This involves combining similar terms and simplifying the arithmetic.
Explanation:
In order to simplify the expression 17-a-2a-6+5a, we first need to gather like terms. In this expression, the like terms are -a, -2a, and +5a. When you add these together, you get 2a. Now, substitute this back into the expression. You now have 17+2a-6. If you simplify further by adding the plain numbers together, you get 2a+11. Therefore, the simplified expression is 2a+11.
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8.1 + -3.5 = what?
Please help this is due soon! Thank youu
Answer:
4.6
Step-by-step explanation:
8.1 + (-3.5) = 8.1 - 3.5
4.6
Dmitri brought 28 ounces of trail mix for $3.92. What is the unit rate?
Answer:
The unit rate is 0.14 cents per ounce.
Step-by-step explanation:
Divide 3.92 by 28 to find out how much the trail mix is per ounce.
The unit rate of Dmitri's trail mix purchase is $0.14 per ounce, calculated by dividing the total cost by the total weight.
To find the unit rate of Dmitri's trail mix purchase, we divide the total cost of the trail mix by the total weight of the trail mix. Dmitri bought 28 ounces of trail mix for $3.92, so we perform the following calculation:
Unit Rate = Total Cost / Total Weight
Unit Rate = $3.92 / 28 ounces
Unit Rate = $0.14 per ounce
Therefore, the unit rate is $0.14 per ounce. This means that for every ounce of trail mix, Dmitri paid $0.14.