Answer:
C. 20 minutes
Step-by-step explanation:
If Victor (V) worked alone, it would take him 30 minutes.
30 * V = 1
V = 1 / 30
When x represents the number of minutes it would take Dennis (D) working alone,
x * D = 1
D = 1 / x
Working together, they would finish in 12 minutes
12 (V + D) = 1
12( 1/30 + 1/x) =1
1/30 + 1/x = 1/12
Multiply all through by x
x/30 + 1 = x/12
x/30 - x/12 = - 1
( 2x - 5x ) / 60 = - 1
- 3x / 60 = - 1
- 3x = -60
x = -60 / -3 = 20 minutes
can you create a equation for this
Answer:
it's y = 2x
Step-by-step explanation:
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Helpppp!!!!
Work out the size of angle x.
answer is 118°
hope that helped
Find the area of a semi circle if the diameter is 3m
Answer:
The radius of the circle=
3/2
1.5
Area of circle= Pi x radius^2
3.14 x 1.5^2
=7.06m^2
Since it's a semi circle
7.06/2
=3.53m^2
Hope it helps
please help me!!!!!!!!111
Is Janelle correct? Yes, because the lines are not parallel. Yes, because the lines will intersect. No, because the lines are in the same plane. No, because the lines are perpendicular.
Answer:
Step-by-step explanation:
No, because the lines are in the same plane.
Bettina bought 8 pairs of socks for $23.20. Nancy bought 10 pairs of socks for $30.00. Nancy says that she paid less per pairs of socks than Bettina. Is Nancy correct
Answer: yes, Nanay did´t buy more pairs of socks, she had bayed more. I hop that this is helpful.
Basil was shown this enlargement, and he was asked to find the perimeter of the enlarged shape. His work is shown below.
The question is incomplete. The complete question is :
Basil was shown this enlargement, and he was asked to find the perimeter of the enlarged shape. His work is shown below.
Where, if any, did Basil first make a mistake in his work?
Solution :
Not -- Basil did not make any mistakes in his work. He found out the perimeter of an enlarged shape.
Perimeter is the total measure of the outer lining or the total outer length of the body or the shape. For different shapes, the perimeters will be different. Basil measure the outer length of the body and found out the perimeter.
Answer:
C
Step-by-step explanation:
Cube of a binomial (a - b)
Answer:
(a - b)³ = a³ - 3a²b + 3ab² - b³Step-by-step explanation:
Cube of a binomial (a - b)
(a - b)³ = a³ - 3a²b + 3ab² - b³Find the Difference.
3x + 5 - (2x + 2)
How do I do this step by step?
Answer: The correct answer is x+3
Step-by-step explanation: To find the answer you must first remove the parentheses then you combine the like terms and that how you get your answer.
Answer:
x + 3
Step-by-step explanation:
PLZ HELP IM TRASH AT MATH
Answer:
C should be the answer.
Step-by-step explanation:
Square root of 50 is equal is 7.071.
7.071 is right in between 7 and 8, making it the right answer for C.
Answer:
C??
Step-by-step explanation:
I mean if you put it in the calculator, then you get 7.07 so... lemme know if im wrong :D
University students will draw a card from a deck of cards. They win a prize if they draw a card marked with a picture of a Texas longhorn. The probability of drawing a card
2
with a longhom is Plonghorn card
card) –
425 students will play the game. Using what you know about theoretical probability, predict how many students will draw a longhorn card.
2/85
Answer:
2/85
Step-by-step explanation:
It's easy.
What is the length of the hypotenuse with
the given vertex (-5,0)?
I
Answer:
5000 square ft
Step-by-step explanation:
Help with this please!!!! The green box
Answer: 6
Step-by-step explanation:
The question is looking for the leg length beside the green box. If you count the leg length from vertex to vertex, it is 6 squares in length.
solve each system by substitution
y=-2x + 7
y = 3x - 13
Answer:
y = -1, x =4
Step-by-step explanation:
3x-`13=-2x+7
x = 4
y=3(4)-13
y = -1
e) 6x-(3x+2)=1 how much is the x
Answer:
1
Step-by-step explanation:
6x - ( 3x + 2) = 1
6x - 3x - 2 = 1
3x = 1 + 2
3x = 3
x = 3 / 3
x = 1
Hope it will help :)
Answer:
x=1
Step-by-step explanation:
Fill in the blank:
I’m diamond, you know I glow up,
Hey, so let’s go
_______________
Answer:
cause imm in the stars tonight
Step-by-step explanation:
cause I I I'm in the Stars tonight
A line is parallel to y = 3x + 5 and
intersects the point (-2, 6). What is
the equation of this parallel line?
Start by entering this into point-slope form.
y- [?] = [](x
](x-[]).
Answer:
Im not like 100% sure but i think you answer is
y-6=3[x-(-2)]
y=6+3x+6
y=3x+12
And i believe that this is parallel to y
Answer:
y = 3x + 12Step-by-step explanation:
Parallel lines have same slope
Given line
y = 3x + 5The line that passes through (-2, 6) and with the slope of 3 is:
y - y₁ = m(x - x₁)y - 6 = 3(x - (-2))y - 6 = 3(x + 2)Convert the equation into slope-intercept form:
y - 6 = 3x + 6y = 3x + 6 + 6y = 3x + 12Madeline is going to invest in an account paying an interest rate of 4.4% compounded
annually. How much would Madeline need to invest, to the nearest ten dollars, for
the value of the account to reach $16,600 in 12 years?
Answer:
$9540
Step-by-step explanation:
A = P(1 + r)^t
16600 = P(1.044)^12
P = 16600/(1.044)^12
P = $9,543.64
the amusement park charges $20 to get in plus $1.50 per ride which linear equation represents this relationship y=1.5+20x,y=21.5x,y=1.5x+20,y=20x+1.5
Step-by-step explanation:
1.50 per ride tones X number of rides plus a 20 entrance fee
y= 1.5x + 20
ANSWER ASAP!!! PLS HELP.
u can only use these for 15, 16 & 17:
acute equilateral ,
obtuse scalene , right scalene , acute isosceles
Step-by-step explanation:
15 . It is an acute equilateral triangle.
16. It is an obtuse scalene triangle.
17. It is right scalene triangle.
Hope it will help :)
A new car is purchased for 24600 dollars. The value of the car depreciates at 5.5% per year. To the nearest year, how long will it be until the value of the car is 11300 dollars?
Answer:
The number of years until the value of the car is 11300 dollars is 9 years.
Step-by-step explanation:
This can be calculated using the following formula:
Value of the Car = Purchase cost - (Annual depreciation expenses * N) ........ (1)
Where;
N = Number of years until the value of the car is 11300 dollars
Purchase cost = $24,600
Annual depreciation rate = 5.5%
Annual depreciation expenses = $24,600 * 5.5% = $1,353
Value of the car = $11,300
Substituting the value into equation (1) and solve for N, we have:
$11,300 = $24,000 - ($1,353 * N)
$1,353 * N = $24,000 - $11,300
$1,353 * N = $12,700
N = $12,700 / $1,353
N = 9.38654841093865
Rounding to the nearest year as required by the question, we have:
N = 9
Therefore, the number of years until the value of the car is 11300 dollars is 9 years.
Step-by-step explanation:
The length of CD is 12 units. C'D' is the image of CD under a dilation with a scale factor of k.
Which of these are true? Choose all that are correct.
I need help with this math problem!! i'll give brainilist to the correct answer :)
Answer:
Blank 1: x
Blank 2: 1.5
Step-by-step explanation:
#thanks for the points!
#Chloe919
#carry on learning
what is 7.25-6.17=? in subtracting decimals
Answer:
1.08
Step-by-step explanation:
simplify 7x7⁴????????
Answer:
7power to 5
Step-by-step explanation:
good luck you're welcome
Answer:
16807
Step-by-step explanation:
7 x 7^4 = 7^1+4
= 7^1+4
1+4= 5 - 7^5
7^5 = 16807
2n^2 + 3n-1
find the 10th term
Answer:
229
Step-by-step explanation:
t10= 2×10^2+3×10-1
=2×100+30-1
=200+29
=229
Answer:
229
Step-by-step explanation:
[tex]2n^{2} + 3n -1\\[/tex]
[tex]2 (10^{2} ) + 3(10) -1[/tex]
[tex]200 + 29 = 229[/tex]
Alan has read 10% of a book. He has 81 more pages to finish. How many pages are there in the book?
Answer:
90
Step-by-step explanation:
100%-10%=90%
90%->81
10%->9
100%->9+81=90
Denise rode 3 kilometers on a bike. her friend clark rode 5000 meters on a bike
how much farther in meters did one person ride than the other?
[tex] \huge \purple{\tt{Answer:}} [/tex]
Denise rode 3 kilometres .
Clark rode 5000 metres which is 5 kilometres .
So , Clark rode 2 kilometres more than Denise .
Answer:
Step-by-step explanation:
1 km = 1000m
3km = 3000m
So difference = 5000 - 3000 = 2000m = 2km
Clark rode 2km more than denis
What is the value of x2+9x+20 when x could be -5, -3 or -6
Answer:
Step-by-step explanation:
You should use a ^ to indicate an exponent. x^2 is the same as x².
x² + 9x + 20
Replace the x with (-5).
(-5)² + 9(-5) + 20 = 25-45+20 = 0
Then do the same with x = (-3):
(-3)² + 9(-3) + 20 = 9 - 27 + 20 = 2
You can do x = (-6)
Select the correct answer. .
Which number has a repeating decimal form?
A 15
B 11/25
C 3/20
D 2/6
Answer:
B
Step-by-step explanation:
I say B because 2 divided by 6 is .333333333 and so on and so forth.
Hope this helped!!