Answer:
Cos 2u = 7/25
Step-by-step explanation:
Here, we want to find the value of cos2u
Using formula, we can rewrite cos 2
Mathematically;
cos 2u = 2cos^2 U - 1
Thus, we have that
cos 2u = 2(4/5)^2 - 1
cos 2u = 2(16/25) - 1
cos 2u = 32/25 - 1
cos 2u = (32-25)/25 = 7/25
HELP FAST I AM TIMED!!! Edge 2020
Please answer the question I will give brainliest!!!
HELP AS SOON ASAP !!!
A washer and a dryer cost $998 combined . The washer costs 48$ more than the dryer . What is the cost of the dryer ?
Answer:
$475
Step-by-step explanation:
998=x+y
y=48+x
graph
intersect at (475,523)
Please Helpppppppppp!!!!!!!!!!!!!!!
Answer:
122/3435.35/67
Step-by-step explanation:
A concrete sewer pipe is 5 meters long and has a radius of 2 meters.
What is the volume of water concrete sewer pipe will hold?
5π m³
10π m³
20π m³
50π m³
Answer:
im guessing 20piem3
Step-by-step explanation:
i dont have a pie button
How many solutions does the equation 4 + 4x - 3 = 4x + 5 have?
O A. Infinitely many solutions
B. No solutions
C. One solution
O D. Two solutions
I need help with this please someone help me
can I get help please
Answer:
B. 4x-3
Explanation:
Alright listen up I need this to be checked, if I'm right then just say ur right but if I'm wrong then can I pretty pretty please with a cherry on top explain the real answer?❤️ Thanks so much please no fibbing just for points, if u want points then tell me in the comment section and I'll make a separate thing for u to take points on and they'll be free, just please don't answer this if you don't know the answer please. Okay love ya thanks.
So here's the prompt:
How is using a conversion factor different from using proportions to convert measurement units? Explain which is easier and why.
Here's my answer:
Well a conversion is a simple ratio that involves two mesurements, and you can't break it down in smaller steps in order to solve it. Proportions are two mesurements that you solve in order to see if it's proportional, but you can break the problems up in order to make it easier to solve. For me proportions are easier to do.
And by the way please don't use this as ur own answer otherwise it'll get me in trouble okay❤️
Answer:
I think you're correct your answer sounds pretty good :)
Step-by-step explanation:
hope this helps :)
Answer:
Conversion factors are easier to use because they are constant.
For example, if you needed to convert, say, 13 kilometers to feet, a conversion factor would help. You would use proportions to convert given a similar conversion.
Essentially, you're answer is correct, because one way to convert units may be different than somebody else's. For you, might be using proportions, which is fine.
What is an equation of the line that passes through the points (-3,8) and (-7,8) help pleaseeee
Answer:
y = 8
Step-by-step explanation:
find slope first
(8-8)/(-7-(-3)) = 0/-4, the slope is 0
You know that 8 is y intercept
Equation: y = 0x + 8, or y = 8
David biked 12 7/8 miles on Tuesday and 5 3/8 miles on Wednesday.How much farther did David bike on Tuesday than on Wednesday
please give me correct answer.
Answer:
I got 7/1/2
Step-by-step explanation:
if its righg
Answer:
7 [tex]\frac{1}{2}[/tex] miles
Step-by-step explanation:
The problem above is under the topic, "Subtracting Mixed Numbers with Similar Fractions."
In order to find the answer, you have to subtract the whole number parts first.
12-5 = 7
Then, you have to subtract the fractional parts. All you have to do is to get the difference of the numerators and copy the denominator.
7/8 - 3/8 = [tex]\frac{4}{8}[/tex]
Therefore, 12 [tex]\frac{7}{8}[/tex] - 5 [tex]\frac{3}{8}[/tex] = 7 [tex]\frac{4}{8}[/tex] miles
Let's simplify: 7 [tex]\frac{1}{2}[/tex] miles
David biked 7 [tex]\frac{1}{2}[/tex] miles farther on Tuesday than on Wednesday.
Need answers fast help help !!!
Answer:
The answer is 29
Step-by-step explanation:
i need help but I need to show work.
Answer:
56
Step-by-step explanation:
f(x)= 3x² -2x
f(-4)= 3*(-4)² -2(-4)
= 3*16 +8
=48+8
=56
A man puts one grain of rice on the first square of a chess on
Answer:
The story of the man putting on grain of rice on a chess board is a great example of exponential growth.
Step-by-step explanation:
The man in the story said that "the king was to put a single grain of rice on the first chess square and double it on every consequent one."
Even though the number starts out small at first, it gets infinitely larger.
For example square 1 has 1 grain of rice, square 2, square 3 has 4, square 4 has 8, square 5 has 16 and so on.
The reason why the number got so large was because there are 64 squares on a chessboard, meaning the last square would have to hold 18,000,000,000,000,000,000 grains of rice!
Hope this helps!
can someone help please
Answer:
0.51
Step-by-step explanation:
google said it was
A freshly cut Christmas tree is sold for $30. The tree is 6 feet tall. How much a foot is it for the tree?
Answer:
$5 a foot for the tree
How many hours until the charges for each company will be equal and what is that charge
Answer:
25 hours, charge= 800
Step-by-step explanation:
300 + 20x = 500 + 12x
8x = 200
x = 25
300 + 20(25)
300+500 = 800
500 + 12(25)
500 + 300 = 800
CAN SOMEONE HELP ME, WILL GIVE BRAINLLEST pls
Answer:
I think both are 75
Step-by-step explanation:
I know the bottom one is definitely 75.
For the top, if you substitute 75 for the y and 1 for the X, the only answer is 75. Please Mark Brainliest if correct.
Evaluate the expression 43 + [(96 ÷ 8) × 5] – 42.
Answer:
Your answer is 61.
Step-by-step explanation:
43+[(96÷8) × 5]-42, first you have to divide 96 and 8.
96 divided by 8 is 12. next you multiply 12 and 5. 12 multiplied by 5 equals 60. then you take 60 and add the 43. you will get 103, then you take 103 and subtract 42, and you will get 61.
Example:
43 + [(96 ÷ 8) × 5] - 42
43 + [12 × 5] - 42
43 + 60 - 42
103 - 42
( 61 )
Solve for f. Show your work. –8 + 8f = 9f
What is the product of 5 and 2/3
Answer:3 1/3
Step-by-step explanation:5/1 x 2/3=10/3=3 1/3
If 6 – 2x – 8x = 16, then 5x = ?
a. 10
b. -2
c. -1
d. -5
..What is the sum.. please help me and dont guess on this is important (will give braniliest) Please help ;((.
Answer:
-2 3 / 7 is the answer to this question
The map shows the territories held by the United States in 1810.
Why was the striped area in dispute at the time?
A)It was also claimed by the country of Spain.
B)The total population for that area was unknown.
C)Most of the people there spoke French, not English.
D)It was mostly an unexplored area that was not inhabited.
Answer:
A) It wasalso claimed by the country of Spain.
Step-by-step explanation:
The original price of a pair of shoes is $42. The sale price is 20% off the original price. What is the amount off the original price? What is the new price for the pair of shoes? (Hint two answers!)
Answer:
a) What is the amount off the original price?
= $8.4
b) What is the new price for the pair of shoes?
= $33.6
Step-by-step explanation:
a) What is the amount off the original price?
We are told that:
The sale price is 20% off the original price.
Original price = $42
Hence:
$42 × 20%
$42 × 20/100
= $8.4
b) What is the new price for the pair of shoes?
The new price =
0riginal price - Amount off the original price
= $42 - $8.4
= $33.6
The original price = $33.6
The ratio of men to women in a movie theater is 3:5. As two more men and one more woman walk in, the ratio of men to women becomes 2:3. How many women were in the theater before these three walked in?
Answer: no of women before they walked in is 8.
Step-by-step explanation:
given data:
ratio of men and women = 3:5
when 2 men and 1 woman walks in = 2:3
solution:
no of women in the theatre before they walked in
men/women= 3/2,
let men =3x............eqn1
women = 2x................eqn2
Total =20
therefore:
[tex]3x+2x=20[/tex]
collect like terms
[tex]5x=20[/tex]
[tex]x=[/tex][tex]\frac{20}{5}[/tex]
[tex]x=4[/tex]
substitute the value gotten for x into equation 1 and 2
[tex]men = 3x= 3(4)=12\\women=2x=2(4)=8[/tex]
PLEASE HELP ASAPP!!!
Answer:
3/5
Step-by-step explanation:
3 and 4 and 5 are more than 2 so they are 3 quantities and the total of the quantities are 5 so the answer should be 3/5
Determine whether each relationship below can be modeled by a linear function. (Yes or No)
The total number of tires, T, on c cars.
The cost, C, in dollars, of p pounds of tangerines.
The temperature, F, after m minutes of a pie taken out of the oven.
The value, V, in dollars, of a bank account earning compound interest after t years.
Answer: yes yes no no
Step-by-step explanation:
4x-2=-6
how to solve this math problem
Answer:8
Step-by-step explanation: First you times 4 x 2 like
4+4=8 here is how i got the four you have to put the four 2 times i hope this helped
Y-5=1/2(x-2) slope intercept form
Answer:
y=1/2+4
Step-by-step explanation:
how much would it cost for one cookie at the price of 2.49
Answer:
$2.49
Step-by-step explanation:
What do you mean?