Answer:
[tex] \sqrt{3 \times 2 {?}^{2} } = \sqrt{12} = 3.46[/tex]
can u please help me
Answer:
first one
Step-by-step explanation:
bcz it is
Heeelp pls pls
Please math
Answer:
#5: 2000+80z
#6: 2.63a+4.5b
#7: 5(9c+2d)
#8: 3(9-3x+5y)
Step-by-step explanation:
Answer:
5. 2000+80z
6. 2.625a-4.5b
7. 5(9c+2d)
8. -3(3x-5y-9)
The engine torque y (in foot-pounds) of one model of car is given by y=−3.75x2+23.2x+38.8, where x is the speed (in thousands of revolutions per minute) of the engine. a. To the nearest ten, what is the engine speed that maximizes torque? revolutions per minute To the nearest hundredth, what is the maximum torque? ft-lbs Question 2
Answer:
Step-by-step explanation:
If the engine torque y (in foot-pounds) of one model of car is given by y=−3.75x^2+23.2x+38.8
The engine speed is at maximum if dy/dx = 0
dy/dx = -2(3.75)x+23.2
dy/dx = -7.5x + 23.2
since dy/dx = 0
0 = -7.5x + 23.2
7.5x = 23.2
x = 23.2/7.5
x = 3.093
Hence the maximum torque is 3.09 rev/min
help please ! ill give brainliest if correct
9514 1404 393
Answer:
a) (-5±√10)/3 ≈ {-2.721, -0.613}
b) (6±√21)/5 ≈ {0.283, 2.117}
Step-by-step explanation:
a) The relevant coefficients are ...
a = 3, b = 10, c = 5
[tex]x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}\\\\x=\dfrac{-10\pm\sqrt{10^2-4\cdot3\cdot5}}{2\cdot3}=\dfrac{-10\pm\sqrt{40}}{6}\\\\\boxed{x=\dfrac{-5\pm\sqrt{10}}{3}\approx\{-2.721, -0.613\}}[/tex]
__
b) The relevant coefficients are ...
a = 5, b = -12, c = 3
[tex]x=\dfrac{-(-12)\pm\sqrt{(-12)^2-4\cdot5\cdot3}}{2\cdot5}=\dfrac{12\pm\sqrt{84}}{10}\\\\\boxed{x=\dfrac{6\pm\sqrt{21}}{5}\approx\{0.283, 2.117\}}[/tex]
a new car was purchased in 2005 for $20,000. it depreciates at a rate of 9%. what year will the car have a value of $10,000
A.2016
B.2008
C.2010
D.2012
Answer:
Step-by-step explanation: 2012
Answer:
The second method is estimating the initial value of the car. Let's assume you were offered to buy a three-year-old car for $12,000. If you input the value into the "3 years" box, the car depreciation calculator will display the initial value of the car - in this case, over $20,500. You can now compare it to the price of a brand new car.
Step-by-step explanation:
At a carnival, 58 of the games cost $1. Another 2.5% of the games cost $2. What percent of the games do not cost $1 or $2?
Answer:
35%
Step-by-step explanation:
5/8 is 62.5%
2.5% + 62.5% = 65%
100%-65% = 35%
35% of the games do not cost $1 or $2
Answer: 35%
Step-by-step explanation:
Finding the median
{12, 9, 10
Answer:
in this case its 10
Step-by-step explanation:
Finding the media means finding the middle in this case there is 3 numbers u would put them numerical order and count to see which is in the middle.
Please Help!!!!!!!!!!!!
Answer:
7
Step-by-step explanation:
since 6-2=4 i assume that it's the same for 9 which equals 7
this may or may not be wrong
Help HELP HELP HELP HELP HELP
Answer:
50 seconds
Solution: It is given that Clare is paid $90 for 5 hours of work. We know that $1 is equal to 100 cents. Hence, it take 50 seconds to earn 25 cents.
The graph shows the amount of money paid when purchasing bags of caramel corn at the zoo: What does the point (0, 0) on the graph represent? (4 points) The cost of zero bags of caramel corn The cost of one bag of caramel corn The cost of two bags of caramel corn The cost of three bags of caramel corn
Answer:
3
Step-by-step explanation:
When you add it up you get 3
Answer:
The answer is A, The cost of zero bags of caramel
enter a fraction)) as you can see i’m from an younger audience, i’m not smart as well- please help me out, i’m new to this as well
Answer:
1/5
hope it helps
Step-by-step explanation:
we can write it as
x÷ 3/7= 7/15
rest of the explanation in the pics above.
PLZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ HELP ME THIS IS SO CONFUSING AND I DON'T UNDERSTAND ANYTHING PLZZ HELP!
An expression is given.(first image)
Which are equivalent to the given expression? Select each correct answer. And Explain? (second image)
Answer:
i got -2y + 3/2 x + 7/4
so I think is d
A music player was marked down by 1/4 of the original price. If the sales price is $128, what is the original price? If the music player was marked up by ½ before it was placed on the sales floor, what was the price that the store paid for the player? What is the difference between the discount price and the price that the store paid for the music player?
Answer:
Step-by-step explanation:
Let the original price be represented by x.
1. [tex]\frac{1}{4}[/tex] of x = x - 128
[tex]\frac{x}{4}[/tex] = x - 128
x - [tex]\frac{x}{4}[/tex] = 128
4x - x = 4 x 128
3x = 512
x = [tex]\frac{512}{3}[/tex]
= 170.67
x = 170.67
The original price is $170.67.
2. If the price of the music player was marked up by ½ of its original price, its new price would be;
170.67 + (170.67 x ½) = 170.67 +85.335
= 256.005
≅ $ 256.0
The price paid by the store for the music player is still the original price i.e $170.67.
3. The difference between the discounted price and the price paid by the store can be determined by;
price paid by the store - the discounted price of the music player
= $170.67 - $128
= $42.67
Solve.
8w+5=4(2w+1)
A. W=0
B. No solution
C. W= -1/2
D. Infinity many solutions
Answer:
B. no solution
Step-by-step explanation:
8w + 5 = 4(2w +1)
8w + 5 = 8w + 4
-8w - 8w
5 = 4
What are the x and y-intercepts of the line described by the equation?
2x + 4y = 12.4
Enter your answers, in decimal form, in the boxes.
x-intercept =
y-intercept =
Hii!!
can someone help me with this problem.
Jenna has $30 in her bank account. She needs more than $250 to buy a new pair of sneakers. She is able to save $20 per week. Let w represent the number of weeks she saves. How many weeks will she need to save before she has enough money for the sneakers?
Answer:
30+20w=250
w=11
Step-by-step explanation:
To do this, write this equation because 30 is what she had and 20w is the weeks. We don't know the weeks so use w. Finally, put=250
30+20w=250
To solve this, do 250-30=220
So 20w=220
Divide 220/20
W=11
Answer:
11 weeks
Step-by-step explanation:
The equation would be 20w + 30 = 250
so, we need to solve w.
20w + 30 = 250
- 30 - 30
20w = 220
___ ____
20 20
w = 11
what is the number if 50% of 25% of the number is 96
Answer:
768
Step-by-step explanation:
because 50 percent of the num is 96 you double that and then multiply by four
Select the correct answer.
Evaluate the following expression when x= -5 and y= 25
5|x| - y3 over x
A. 620
В. 3,120
C. -3,130
D. -630
5(-5)-(25)³ over -5 = -25-15625 over -5 = -16250/-5 = 3,130
Factorise the following: x^2-14x+48
Answer:
(x-8)(x-6)
Step-by-step explanation:
To factor this, you need the numbers that will multiply together to give you the third number (48 in this case) and add together to give you the second number (-14). -8 * -6 = 48. -8 + -6 = -14
LeeAnn is bringing her sick cat Snowball in for a series of appointments at the veterinary clinic. Her total cost over the course of treatment will be $250 for tests and medicine plus $45 per appointment, a. Part A Write an equation to show the total cost, t, she will owe. Part B The clinic offers LeeAnn a 25% discount off of her total cost. Write an equation to show her updated cost. Part C What will be LeeAnn's total discounted cost of Snowball's treatment requires six veterinary appointments? Form B Show your work.
Answer:
Part A: y = $250 + $45x
Part B: U = y * 0.75 or U = ($250 + $45x) * 0.75
Part C: $390
Step-by-step explanation:
Part A: In this scenario, we have fixed costs for the treatment and two variables, one of which is the number of appointments which is represented by the letter x and the total amount of costs which is represented by the letter y in the following equation...
y = $250 + $45x
Part B: Now we have the equation for the total cost we can update it to add the 25% discount. Since this is a discount it means that it is being subtracted from the 100% original price. Therefore, we need to multiply the total cost by the decimal form of 75% (100 - 25) which we can get by dividing the percentage by 100 like, which gives us 0.75. Now we multiply this value by the total cost in order to get the updated cost (U).
U = y * 0.75 or U = ($250 + $45x) * 0.75
Part C: Now we can substitute the number of appointments variable (x) by 6 and solve for U.
U = ($250 + $45x) * 0.75
U = ($250 + $45(6)) * 0.75
U = ($250 + $270) * 0.75
U = $520 * 0.75
U = $390
The state transportation commission counted cars traveling east and west across a toll bridge. 40% of the 50,000 cars counted were traveling east. How many eastbound cars did the commission count? please help me :(
Answer:
If you are asking what is 40% of 50,000, then it should be 20,000.
Step-by-step explanation:
- 2 - 5x = -16 for x
[tex]x = 2 \frac{4}{5} x =2.8[/tex]
Have a good day
Solve for x. Thank you
Answer:
x = 11
Step-by-step explanation:
9x + 1 + 100 = 180
9x + 101 = 180
9x = 99
x = 11
Answer:
x = 11
Step-by-step explanation:
the angles are alternate exterior and therefore equal eachother
so 100 = 9x- 1
100- 1 = 9x-1 + 1
99 = 9x
99/9 = 9x/9
11 = x
PLZ HELP AND HURRY
Oliver randomly draws a marble from a bag of colored marbles, and notes its color. He then draws another marble without replacing the first one.
In this experiment, the event of drawing the second marble is dependent on the event of drawing the first marble. What can be changed in this experiment so that these events become independent?
A.
The second marble should be drawn by looking into the bag.
B.
It is not possible to make the second event independent of the first event.
C.
The first marble should be replaced in the bag before drawing the second marble.
D.
A different-colored marble should be added to the bag before drawing the second marble.
Answer:
If this were my test, i would pick D but since its yours, i thought about this answer, so correct me if i still got this wrong.
Step-by-step explanation:
B) It is not possible to make the second event independent of the first event.
since the event is based off the same action the person made before the similar event.
Answer:
independent
Step-by-step explanation:
Just answers. No explanation needed. ASAP. WILL GIVE BRAINLIEST!!!
YEETTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT I FEEL BAD BUT
hi i need help in math pls i am really bad plssssssss
Answer:
The answer is a= [tex]\frac{8x^2+11x+1}{2}[/tex]
Step-by-step explanation:
Combine like terms and we get,
[tex]24x^2+83x+3=6ax[/tex]
[tex]\frac{24x^2+33x+3}{6x} =a[/tex] divide both sides of the equation by ax, and simplify further,
[tex]\frac{x(8x^2+11x+1)}{2}[/tex] notice that we can reduce the 24 over 6 1/2,
[tex]\frac{8x^2+11x+1}{2} =a[/tex] distribute and simplify further
And a=[tex]\frac{8x^2+11x+1}{2}[/tex]
Which graph shows a line with a slope of 2 and a y-intercept of 0?
Answer:
Its C
Can I please get a Brainlist please thx.
Step-by-step explanation:
The equation of a line is given by:
y = mx + c
where m is the slope of the line and c is the y-intercept.
The graph of Option C shows a line with a slope of 2 and a y-intercept of 0.
Option C is the correct answer.
What is an equation of a line?The equation of a line is given by:
y = mx + c
where m is the slope of the line and c is the y-intercept.
Example:
The slope of the line y = 2x + 3 is 2.
The slope of a line that passes through (1, 2) and (2, 3) is 1.
We have,
The line has a slope of 2 and the y-intercept is 0.
This means,
The line has to pass through y = 0.
i.e (0, 0)
Now,
We see that,
Options B and C has the y-intercept at y = 0.
Option B.
Two points: (0, 0) and (-1, 2)
Slope = (2 - 0) / (-1 - 0) = 2/-1 = -2
Option C.
Two points: (0, 0) and (1, 2)
Slope = (2 - 0) / (1 - 0) = 2/1 = 2
We see that,
Option C has slope = 2.
Thus,
The graph of Option C shows a line with a slope of 2 and a y-intercept of 0.
Option C is the correct answer.
Learn more about equation of a line here:
https://brainly.com/question/23087740
#SPJ2
Caleb read a total of 30 pager over 2 hours. After a total of 3 hours of reading this week, how many pages will Caleb have read in all? Solve using unit rates
Answer:
45 pages
Step-by-step explanation:
Caleb read a total of 30 pager over 2 hours.
To find the unit rates
2 hours of reading = 30 pages
1 hour of reading = x
Cross Multiply
2× x = 30 × 1
2x = 30
x = 30/1
x = 15 Pages.
Hence, he read 15 pages per hour
After a total of 3 hours of reading this week, how many pages will Caleb have read in all?
If;
1 hour = 15 pages
3 hours = x pages
Cross Multiply
x = 3 × 15 pages
x = 45 pages
Hence, Caleb would have read 45 pages in all
It takes 43 facial muscles to frown. This is 26 more muscles than it takes to smile. Write and solve an equation to find the number of muscles it takes to smile. (example: s + 1 = 4)
Answer:
Number of facial muscles it takes to smile, S = 20
Step-by-step explanation:
Let
Number of facial muscles it takes to smile = S
Number of facial muscles it takes to frown, F = 46
This is 26 more muscles than it takes to smile
F = S + 26
46 = S + 26
Subtract 26 from both sides
46 - 26 = S + 26 - 26
20 = S
S = 20
The number of muscles it takes to smile is 20
FIRST to answer and get it CORRECT will get brainliest, 13 points , and a thanks:) pls leave an explanation on how u got ur answer if possible :)
Answer:
Yes, john did make his scale factor the right way, because
Step-by-step explanation:
3 x 2.5 = 7.5, Seen on the right figure/shape/parallelogram
2 x 2.5 = 5, Seen on the right figure/shape/parallelogram
Edit:
Brainliest? :)
Answer:
Yes he did it correctly
Step-by-step explanation:
The scale factor is the number you get after you divide the values of the corresponding sides of both shapesFor this example the 2 side is similar to the 5 side and the 3 side is similar to the 7.5 side. So we make ratios from the first figure to the second figureThat will 2 from the first to 5 five from the second so 2 : 5Then 3 from the first to 7.5 from the second so 3 : 7.5The scale factor must be same for every ratio, or else the transformation is incorrectCheck the ratios, does [tex]2:5=3:7.5[/tex] ?[tex]2:5=\frac{2}{5} =0.4[/tex] [tex]3:7.5=\frac{3}{7.5} =0.4[/tex] yes, so it is a correct transformation