Answers
Answer:
a = 4.8
Step-by-step explanation:
9 - 4a + 12 = 6a - 27
21 - 4a = 6a - 27
48 - 4a = 6a
48 = 10a
4.8 = a
Related Questions
A speed skater skates 1.5 km in 78 s. What is her speed in km/h? Round to the nearest
Answers
Answer:
Step-by-step explanation:
Speed=Distance/Time
1.5/78=0.01923076923
Answer rounded=0.02/0.019
Your dinner costs $21.50 before tax. If you used a fifteen percent off coupon
and then you are charged seven percent sales tax, what is your balance with tax?
Answers
Answer:
$19.55
Step-by-step explanation:
Discount = 15% of 21.50
= 0.15 * 21.50
= 3.225
= $ 3.23
Balance need pay = 21.50 - 3.23 = $ 18.27
Tax = 7% of 18.27
= 0.07 * 18.27
= $1.28
Balance with tax = 18.27 + 1.28 = $ 19.55
The piece wise defined function f(x) is graphed below. What is the value of f(5)?
Answers
Answer:
a
Step-by-step explanation:
use the figure to find the measures of the numbered angles
Answers
2. 68 degrees
I NEED HELP ASAP!!!!!!!
Answers
Answer:
(-2,3)
Step-by-step explanation:
All points in the dark red area (not on both line) are solutions.
For the system of equations that follows, use Gaussian elimination to obtain an equivalent system whose coefficient matrix is in row echelon form. Indicate whether the system is consistent. If the system is consistent and involves no free variables, use back substitution to find the unique solution. If the system is consistent and there are free variables, transform it to reduced row echelon form and find all solutions.
x₁ + 3x₂ + x₃ + x₄ = 3;
2x₁ - 2x₂ + x₃ + 2x₄ = 8;
x₁ - 5x₂ + x₄ = 5
Answers
Answer:
[tex]\begin{Vmatrix}1 & 0 & 0& 46/41 &180/41\\0 & 1 & 0&1/41 &-5/41\\0&0 & 1 & -8/41& -42/41\end{Vmatrix}[/tex]
Step-by-step explanation:
From the question we are told that
System of equations given as
x₁ + 3x₂ + x₃ + x₄ = 3;
2x₁ - 2x₂ + x₃ + 2x₄ = 8;
x₁ - 5x₂ + x₄ = 5
Matrix form
[tex]\begin{Vmatrix}1 & 3 & 1&1&3\\2 & -2 & 1&2&8\\0&1 & -5 & 1& 5\end{Vmatrix}[/tex] [tex]\begin{Vmatrix}x_1\\x_2\\x_3\\x_4\end{Vmatrix}[/tex]
Generally the echelon reduction is mathematically applied as
[tex]\begin{Vmatrix}1 & 3 & 1&1&3\\2 & -2 & 1&2&8\\0&1 & -5 & 1& 5\end{Vmatrix}[/tex]
Add -2 times the 1st row to the 2nd row
[tex]\begin{Vmatrix}1 & 3 & 1&1&3\\0 & -8 & -1&0&2\\0&1 & -5 & 1& 5\end{Vmatrix}[/tex]
Multiply the 2nd row by -1/8
[tex]\begin{Vmatrix}1 & 3 & 1&1&3\\0 & 1 & 1/8&0&-1/4\\0&1 & -5 & 1& 5\end{Vmatrix}[/tex]
Add -1 times the 2nd row to the 3rd row
[tex]\begin{Vmatrix}1 & 3 & 1&1&3\\0 & 1 & 1/8&0&-1/4\\0&0 & -41/8 & 1& 21/4\end{Vmatrix}[/tex]
Multiply the 3rd row by -8/41
[tex]\begin{Vmatrix}1 & 3 & 1&1&3\\0 & 1 & 1/8&0&-1/4\\0&0 & 1 & -8/41& -42/41\end{Vmatrix}[/tex]
Add -1/8 times the 3rd row to the 2nd row
Add -1 times the 3rd row to the 1st row
[tex]\begin{Vmatrix}1 & 3 & 0&49/41&165/41\\0 & 1 & 0&1/41 &-5/41\\0&0 & 1 & -8/41& -42/41\end{Vmatrix}[/tex]
Add -3 times the 2nd row to the 1st row
[tex]\begin{Vmatrix}1 & 0 & 0& 46/41 &180/41\\0 & 1 & 0&1/41 &-5/41\\0&0 & 1 & -8/41& -42/41\end{Vmatrix}[/tex]
Polygon ABCD has the following vertices:
Al-5, 4), B(1,4), C(6,-4), and D(-5, -4)
Calculate the area of the polygon.
a.48 units squared
b. 53 units squared
c. 68 units squared
d. 88 units squared
Answers
Step-by-step explanation:
By the Shoelace method,
Area of quadrilateral = 0.5|(-5)(4) + (1)(-4) + (6)(-4) + (-5)(4) - (1)(4) - (6)(4) - (-5)(-4) - (-5)(-4)|
= 0.5|(-20 - 4 - 24 - 20 - 4 - 24 - 20 - 20)|
= 0.5|(-136)|
= 0.5 * 136 = 68 units squared. (C)
Answer:
68 units squared C
Step-by-step explanation:
I took the test and I got a 100% with this answer.
Read these sentences from the text.
Alex is not a smoker, but he lives near St. Louis, named the worst place in the U.S. for asthma sufferers by the Asthma and Allergy Foundation of America in 2009. The group rated St. Louis low for having poor air quality and because it doesn’t have as many laws as other places keeping indoor areas smoke free.
Based on this evidence, what can you conclude about asthma sufferers in St. Louis?
A. St. Louis is the only city in the United States where asthma is common.
B. Poor air quality and indoor smoking can cause problems for asthma sufferers.
C. Poor air quality and indoor smoking have no effect on asthma sufferers.
D. There are more asthma sufferers in St. Louis than any other city in America.
Answers
Answer: Hi! I would say it is D because the other answers really don’t make sense. And the passages said that they were rated low for air quality.
Step-by-step explanation:
I hope this helps!
Enter the value of n so that the expression (3y+1)+(2y+8) is equivalent to (ny+9)
Answers
hope i was able to help and i wasn’t to late.
The value of n is 5 + 8/y for that expressions (3y + 1) + (2y + 8) and (ny + 9) are equivalent.
What is an algebraic expression?An algebraic expression is consists of variables, numbers with various mathematical operations.
The given expressions are (3y + 1) + (2y + 8) and (ny + 9)
Also, both the expressions are equivalent to each other.
To find the value of n, equate expressions (3y + 1) + (2y + 8) and (ny + 9),
3y + 1 + 2y + 8 = n y + 1
5y + 9 = n y + 1
5y + 9 - 1 = n y
5y + 8 = n y
n = (5y + 8) / y
n = 5 + 8/y
The required value of n is 5 + 8/y.
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2
Select all the correct answers.
Terry is an up-and-coming florist who specializes in weddings. He uses 5 roses. 3 daisies, and 4 bundles of green filler to make one bouquet.fr
is the cost of a rose. dis the cost of a daisy, and fis the cost of a bundle of green filler, which expression represents the cost for making 75
bouquets?
75r+750 +75f+ 12
(5r+30 +41 +75
75(57)+75(3d) + 75(4)
75(5r+ 3d +45
Reset
Next
Answers
Answer:
is first one and last one
Step-by-step explanation:
Answer: Option (4) is correct. 75( 5r + 3d + 4f ) expression represents the cost for making 75 bouquets.
Step-by-step explanation:
Given: r is the cost of a rose, d is the cost of a daisy, and f is the cost of a bundle of green filler.
Terry uses 5 roses, 3 daisies, and 4 bundles of green filler to make one bouquet.
Thus, cost of one bouquet = cost of each flower used × number of flower used.
Total cost of one bouquet= 5r+3d+4f
Thus, cost for making 75 bouquets = 75 × cost of one bouquet
= 75( 5r + 3d + 4f )
Thus, option (4) is correct. 75( 5r + 3d + 4f ) is the correct expression to represents the cost for making 75 bouquets
Which of the following equations represents the line with a slope of 2 and a y-intercept of 4?
y = 2x + 4
y = 1/2x - 4
y = 2x - 4
y = 1/2x + 4
Answers
Answer:
The equation of the line with a slope of 2 and a y-intercept of 4 in the slope-intercept is:
y = 2x + 4Hence, option 'A' is correct.
Step-by-step explanation:
The slope-intercept form of the line equation
y = mx+b
where
m is the slope b is the y-interceptIn our case, we are given
Slope m = 2y-intercept b = 4substituting m = 2 and b = 4 in the slope-intercept form of the line equation
y = mx+b
y = 2x + 4
Therefore, the equation of the line with a slope of 2 and a y-intercept of 4 in the slope-intercept is:
y = 2x + 4Hence, option 'A' is correct.
PLEASEEEEEEEEEEEEE HELPPPPPPPPPP Mon wants to make 5 lbs of sugar syrup. How much water and how much sugar does he need to make 25% syrup?
Answers
Answer:
1.25 IB of sugar, 3.75 IB of water
Answer:
1.25lb of sugar , 3.75lb of water
Step-by-step explanation:
just trust me on this one :)
Solve the equation. You may find using algebra tiles to be helpful.
2x+5=11
X= ?
What does X equal
Please I need help need it soon
Answers
How to solve the following equation:
5²(2x-3)=100
Answers
That gives you 50x - 75 = 100
100 - 75 = 25
That gives you 50x = 25
25/50 = 0.5
Final answer x = 0.5
A waterwheel is being turned by a stream at a rate of 3 revolutions per minute. If the diameter of the wheel is 15 ft, then how fast is the stream flowing
Answers
Answer:
0.7176 m/s m/s
Step-by-step explanation:
We are given;
Rate = 3 rev/min
Diameter: d = 15 ft
Now, we want to find how fast the stream is flowing which is the linear velocity.
Thus;
linear velocity = circumferential distance × number of revolutions
Now, circumferential distance = πd
Circumferential distance = 15π
Thus;
linear velocity = 15 × π × 3 = 45π ft/min
Converting to m/s gives;
Linear velocity = 45π/197 m/s
Linear velocity = 0.7176 m/s
I need help with this one
Answers
Answer:
60
Step-by-step explanation:
The answer of this question is 60 degree
Find the inverse function (on the given interval, if specified)
f(x) = x² + 1 for x 20
Find the inverse function.
f'(x)= for x2
Answers
Step-by-step explanation:
f(x) = x² + 1, where x >= 0.
Let y be f(x).
=> y = x² + 1
=> x² = y - 1
=> x = √(y - 1) because x is non-negative.
Hence f^-1(x) = √(x - 1), where x >= 1.
7696 divided by 52 with remainder
Answers
Answer:148 with no remainder
Step-by-step explanation:
The number 7696 is called the numerator or dividend, and the number 52 is called the denominator or divisor.
The quotient of 7696 and 52, the ratio of 7696 and 52, as well as the fraction of 7696 and 52 all mean (almost) the same:
7696 divided by 52, often written as 7696/52 is 148 with not decimals meaning that there is no remainder
Hope you have a wonderful day and may your dreams come true!
lfu29
When 7696 divided by 52 then quotient is 148 and remainder is 0.
When you divide 7696 by 52, the quotient is the whole number result of the division, and the remainder is the amount left over.
Let's perform the division:
148 (quotient)
______________
52 | 7696
7696
-----
000
The quotient is 148, and the remainder is 0.
So, 7696 divided by 52 is equal to 148 with a remainder of 0.
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Mane who be shaking dice?
Answers
Not me
Step-by-step explanation:
Solve the equation below. If the solution is not an integer, give it in fractional form reduced to lowest terms.
X-9 over 4 =3
Answers
Answer:
x = 21
eliminate the denominator of 4
you can do this buy multiplying both sides by 4
x -9 = 12
x = 21
if Leah makes $9.50 per hour and she works 36 hours this week, how much will her paycheck be before taxes?
Answers
Answer:
Leah makes $342 before tax.
Step-by-step explanation:
9.50 x 36 = 342
Leah makes $342 before tax.
I hope this helped and if it did I would appreciate it if you marked me Brainliest. Thank you and have a nice day!
Answer:
Leah makes $342 before tax.
Step-by-step explanation:
9.50 x 36 = 342
Leah makes $342 before tax.
I hope this helped and if it did I would appreciate it if you marked me Brainliest. Thank you and have a nice day!
Step-by-step explanation:
help meeee plzzz brainleestttttt
Answers
Answer:
From left to right, top to bottom
3
8
5
9
8
15
16
4
35
20
8
40
1
15
11
4
18
27
10
10
Step-by-step explanation:
Answer:
starting at the top left to right
3
8
5
9
8
15
16
4
35
20
8
40
1
15
11
4
18
27
10
10
Step-by-step explanation:
Click an item in the list or group of pictures at the bottom of the problem and, holding the button down, drag it into the correct position in the answer box. Release your mouse button when the item is place. If you change your mind, drag the item to the trashcan. Click the trashcan to clear all your answers.
Place the indicated product in the proper location on the grid.
(2x - 3y )(4x - y )
Answers
xy - -4x²
Step-by-step explanation:
(2x - 3y)(4x -y)
2x( 4x -y) -3x( 4x - y)
8x² - 2xy - 12x² + 3xy
8x²- 12x²- 2xy + 3xy
-4x² + xy
xy - -4x²
A manufacturer considers his production process to be out of control when defects exceed 3.2%. In a random sample of 136 items, the defect rate is 8.7% but the manager claims that this is only a sample fluctuation and production is not really out of control. At the 10% level of significance, use the critical value method to test the manager's claim. Enter the test statistic. (Round your answer to nearest hundredth.) 1. Extract Information:
2. Original Claim:
3. Hypothesis
4. Distribution (Graphically);
6 Test Statistic
7. Statistical Conclusion
8. Final Words
5. Critical Value(s):
6.test statistics
7. statistical conclusion
Answers
Answer:
dsynyerjtetuegrjghdgfs
Plz help! I will do anything
Answers
Write an algebraic expression for "six times a number divided by fourteen". *
Answers
Answer:
6x/14
Step-by-step explanation:
6x/14
Step-by-step explanation:
let a number is x
and 6 times means= 6x
then divided by fourteen
6x/14
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An engineer is designing a television screen. The screen is shaped like a rectangle with a diagonal of 34
inches. The ratio of the length of the rectangle to its width must be 15:8.
What is the length of the screen?
A. 30 in.
B. 23 in.
c. 32 in.
D. 15 in.
Answers
Answer:
30"
Step-by-step explanation:
length:width = 15:8
length = 15x
width = 8x
(15x)² + (8x)² = 34²
225x² + 64x² = 34²
289x² = 34²
x² = 34²/289
x = 34/17 = 2
length = 15x = 30 inches
True of False? The line of best fit can only represent data that has a linear association?
Answers
Answer:
True
Step-by-step explanation:
help with this!thank you!
Answers
Answer:
≈ 3.75°Step-by-step explanation:
Let the slope be x
tan x = 3/36tan x = 1/12x = arctan 1/12x ≈ 3.75°5(m + 4) = -2-4-m) +3
Answers
Answer:
m=3
Step-by-step explanation:
5m + 20= 8 + 2m +3
5m + 20= 11 + 2m
3m + 20 =11
m= 3
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