Answer:
$142.86
Step-by-step explanation:
In order to know the original price of the sound bar, it is best to write the problem above into a mathematical sentence first.
Given: $30 = the amount you were able to save
21% = the discount (this means that $30 is the 21% discount)
Let x be the original price of the sound bar.
The mathematical sentence is:
$30 is 21%(0.21) of x
x=[tex]\frac{30}{0.21}[/tex]
x= $142.857 or $142.86 (once rounded off to the nearest hundredths)
So, the original price of the sound bar before the discount is $142.86
Please solve these! Also if you could please show your work! This is Algebra 1
i attached screenshots for answers since I can't write freely here
there are 3 pics just scroll
Step-by-step explanation:
1) -28
here u can solve it normally , but in pic took long steps since it's "simplify expressions"
2) x = 64
3) D) -1 ½
What’s the unit rate for Tegan?
Answer:
The unit rate is 16
what is tan 11pie divided by 6?
Answer:
1/6 tan(11 π) = 0
Alternate representations:
1/6 tan(11 π) = -1/6 cot((21 π)/2)
1/6 tan(11 π) = -1/6 cot((23 π)/2)
1/6 tan(11 π) = 1/(6 cot(11 π))
Step-by-step explanation:
Can someone help plz helpppp!!!!!
Answer:
4N left
5N left
0N (balanced)
9N right
Step-by-step explanation:
The net force is the vector sum of all of the forces acting on an object. To find the net force when there are two opposite forces subtract the smaller number from the larger, for example, 7-2. Then take to total, 5N, and add the direction of the stronger force. If the equation equals zero that means you have a balanced force. To find the force of two actions in the same direction simply add them.
help??
Anyone???
7th grade math
Answer:
25 X 5.5 equals 137.5 miles
Step-by-step explanation:
brainlies pleas
if joey trap has 2 million views and you go check him out how many views will he have no really go check him out 100 points just go look him up its not a joke
Answer:
lol done
Step-by-step explanation:
Write the equation of the line fully simplified slope intercept form
Answer:
y = 4x - 3
Step-by-step explanation:
which shows the mixed number for 9/4 in the simplest form
Answer:
2 1/4
Step-by-step explanation:
Do the ratios 8/16 and 1/2 form a proportion?
Answer:
yes
Step-by-step explanation:
They both equal to one half, which makes them proportional
Find the percent of change
8 feet to 10 feet
Answer:
10 feet is [tex]\frac{10}{8}[/tex] or 1.25% of 8 feet.
Step-by-step explanation: :D
Select the correct answer.
which equation represents the line that is parallel to y= 3 and passes through (-2,-8)?
А.
x = -2
B.
x=3
C. y=-8
D.y= 3x - 2
Answer: -8
Step-by-step explanation:
other people got -8 so I'm pretty sure this is the answer.
A school is installing a flagpole in the central plaza. The plaza is a square with side length 100 yards as shown in the figure below. The flagpole will take up a square plot in the middle of the plaza and its base will have an area of x^2−6x+9 yd^2.
Area of the flagpole plot: x^2−6x+9
Find the length of the base of the flagpole by factoring. (Hint: Because the area of the flagpole is an expression that involves the variable x, the length of the base will also involve the variable x.)
The length of the base of the flagpole is
Answer:
[tex]x-3[/tex]
Step-by-step explanation:
The area of the flagpole base is [tex]x^2-6x+9\ \text{yd}[/tex]
where the factor of the equation is the length of the base.
In order to find the length we need to factorize the equation
[tex]x^2-6x+9[/tex]
[tex]=x^2-3x-3x+9[/tex]
[tex]=x(x-3)-3(x-3)[/tex]
[tex]=(x-3)(x-3)[/tex]
The length of the base of the flagpole is [tex](x-3)\ \text{yd}[/tex].
The area of a square base is the product of the side lengths.
The length of the base is x - 3
The area is given as:
[tex]\mathbf{Area =x^2 - 6x + 9}[/tex]
Expand
[tex]\mathbf{Area =x^2 - 3x - 3x + 9}[/tex]
Factorize
[tex]\mathbf{Area =x( x- 3) - 3(x - 3)}[/tex]
Factor out x - 3
[tex]\mathbf{Area =( x- 3) (x - 3)}[/tex]
Express as squares
[tex]\mathbf{Area =( x- 3)^2}[/tex]
Rewrite the area as:
[tex]\mathbf{Length^2 =( x- 3)^2}[/tex]
Take square roots of both sides
[tex]\mathbf{Length =x- 3}[/tex]
Hence, the length of the base is x - 3
Read more about area of squares at:
https://brainly.com/question/1658516
What is 1/10 of the digit in the ten thousand place of 683,906.826.24
What is the equation of the line showed in this graph?
Answer:
y=1
Step-by-step explanation
find each percent increase
from 20 teachers to 30 teachers ___
I need step by step help on how to work out this percentage question
Answer:
$15.7, $141.3Step-by-step explanation:
Discount
157*0.1 = $15.7Sale price
157 - 15.7 = $141.3Georgia said she could make 11 out of 20 blankets for a craft show. She has already made 3 blankets. What percent of the 20 blankets does she still have to make? helppppppppppppppppppppp pleaseeeeeeeeeeeeeeeeeeeeeeeeeee i wil give you 100 0point i swerare
Answer:
Step-by-step explanation:
Total she can make = 11
Amount she has already made = 3
Amount she still have to make = 11-3 = 8
% of the 20blanket she still have to make = 8/20×100
= 8×5
= 40%
Hence she Still need to make 40% of the 20blanket
Answer:
11-3=8
40% of 20 is 40/100*20 = 8
Step-by-step explanation:
brainliest please
Which ordered pair is a solution to the equation y=5x-25?
(12,50)
(5,10)
(2,25)
(10,25)
Answer:
c bye
Step-by-step explanation:
Please help it’s due
5 = 60
6 = 150
7 = 30
if you have any more questions let me know
The weekly amount spent by a small company for in-state travel has approximately a normal distribution with mean $1450 and standard deviation $220. What is the probability that the actual expenses will exceed $1560 in 20 or more weeks during the next year?
Answer:
0.0903
Step-by-step explanation:
Given that :
The mean = 1450
The standard deviation = 220
sample mean = 1560
[tex]P(X > 1560) = P( Z > \dfrac{x - \mu}{\sigma})[/tex]
[tex]P(X > 1560) = P(Z > \dfrac{1560 - 1450}{220})[/tex]
[tex]P(X > 1560) = P(Z > \dfrac{110}{220})[/tex]
P(X> 1560) = P(Z > 0.5)
P(X> 1560) = 1 - P(Z < 0.5)
From the z tables;
P(X> 1560) = 1 - 0.6915
P(X> 1560) = 0.3085
Let consider the given number of weeks = 52
Mean [tex]\mu_x[/tex] = np = 52 × 0.3085 = 16.042
The standard deviation = [tex]\sqrt {n \time p (1-p)}[/tex]
The standard deviation = [tex]\sqrt {52 \times 0.3085 (1-0.3085)}[/tex]
The standard deviation = 3.3306
Let Y be a random variable that proceeds in a binomial distribution, which denotes the number of weeks in a year that exceeds $1560.
Then;
Pr ( Y > 20) = P( z > 20)
[tex]Pr ( Y > 20) = P(Z > \dfrac{20.5 - 16.042}{3.3306})[/tex]
[tex]Pr ( Y > 20) = P(Z >1 .338)[/tex]
From z tables
P(Y > 20) [tex]\simeq[/tex] 0.0903
A 2 1/2 pound of grass seed covers 1/8 of an acre. How much grass seed is needed for 1 acre
Answer:
20 pounds
Step-by-step explanation:
You just multiply 2 1/2 by 8 to figure out the whole acre
2.5x8=20
Answer:
20 pounds of grass seeds
Step-by-step explanation:
2.5: 1/8
? : 1
multiply both sides by 8.
2.5*8=20
? = 20
What number should the fraction 15/3 be multiplied by in order to equal 1
soo ya marking brainlist 165 points
Answer:
Step-by-step explanation:
Just so you know, you are stuck with awarding just 5 points.
15/3 * 1/5 = 1
A bicycle is traveling at 14 miles per hour.
How many feet will it cover in 35 seconds?
Answer:
The answer is 31 how that help
Please help it’s due
1 = 70
2 = 20
3 = 70
4 = 20
5 =110
HELPPPPPP MEEEEEE PLEASEEEEEE!!!!!!
15 POINTS
A housepainter mixed 5 gal of blue paint with every 9 gal of yellow paint in order to make a green paint. Which ratio of gallons of blue paint to gallons of yellow paint will make the same shade of green paint?
A. 10 : 45
B. 30 : 54
C. 6 : 10
D. 27 : 15
explanation if you know how to explain
Answer:
The answer is B
Step-by-step explanation:
The problem is asking for the same ratio as 5:9
Multiply both sides by 6 to get 30:54
1 Which expression is equivalent to 1/3y?
• 1/3(y+12)-12
1/6y+1/3(y+3
1/6y+1/6(y+12)-2
1/3y+1/3(6-y)
Answer:
The answer is 1/6y+1/6(y+12)-2
Answer:
1/6y+1/6(y+12)- 2
Step-by-step explanation:
Distribute [tex]\frac{1}{6}[/tex] through the parentheses : [tex]\frac{1}{6}[/tex]y + [tex]\frac{1}{6}[/tex]y + 2 - 2Remove the opposites and calculate ( since two opposites add up to zero remove them from the expression) : [tex]\frac{1}{6}[/tex]y + [tex]\frac{1}{6}[/tex]yCalculate the sum : [tex]\frac{1}{3}[/tex] ySolution : [tex]\frac{1}{3}[/tex] y
can someone help me with this i have no idea how to do this:/ will mark brainliest
Answer:
slope = 2.
Step-by-step explanation:
find the slope using this formula y2-y1/x2-x1
40-20/1-0 = 2/1 or just 2.
When sawdust is poured into a pile, it takes the shape of a cone where the proportion of height to base diameter is always the same. The volume of a cone can be found using the formula 1 V = ar-h, where r is the radius of the base circle, and h is the height of the cone. 3 A particular sawdust pile has a base diameter of 35 feet when the height is 30 feet. Find the volume of this sawdust pile when it is 55 feet high. ft3 Give your answer as an expression (using pi for 7), or as a value accurate to the nearest whole number.
Answer: i really don’t u derstans this
Step-by-step explanation:
Which algebraic expression is equivalent to the expression below?
(8x + 12) + (9x - 3)
A.
20x - 6
B.
17x + 9
C.
29x - 3
D.
17x + 15
Answer:
b
Step-by-step explanation:
