Answer:
the answer is:
(12) + (18) = 30
846.27 divided by 0.22
Answer:
3846.68182
Step-by-step explanation:
help plz thx soo much
Given |u| = 10 at ∠135° and |v| = 5 at ∠30°, what expression can be used to find |u + v|?
(10)2 + (5)2 – 2(10)(5) cos(45°)
(10)2 + (5)2 – 2(10)(5) cos(75°)
(10)2 + (5)2 – 2(10)(5) cos(105°)
(10)2 + (5)2 – 2(10)(5) cos(165°)
Answer:
B, [tex]10^{2} + 5^{2}- 2(10)(5)cos(75)[/tex]
Step-by-step explanation:
Using the law of cosines, which is [tex]c^{2}=a^{2}+b^{2}-2ab cos(C)[/tex], you can simply insert all the values.
c=|u+v|
a= r value of u (10)
b= r value of v (5)
To find C, you simply have to subtract v from u, and then subtract that number from 180 to find the reference angle.
I.E.: ∠135 - ∠30 = ∠105 ↔ 180 - 105 = 75 = C
so, the completed equation would be 10^{2} + 5^{2}- 2(10)(5)cos(75)
Answer:
its B
Step-by-step explanation:
Just got it right on edge
Jannelle can drive an average of 295 miles on one tank of gas. How many miles
can she drive on 16 tanks of gas?
P
Jannelle could go 4,720 miles hope this helps
74. A friend devises a game that is played by rolling a single six-sided die once. If you roll a 6, he pays you $3; if you roll a 5, he pays you nothing; if you roll a number less than 5, you pay him $1. Compute the expected value for this game. Should you play this game
Answer:
The expected value is -$0.17
Since it gives a negative expected value, the game is not favorable and should not be played
Step-by-step explanation:
Here, we want to calculate the expected game value and decide if the game is worth playing
Probability of rolling a six is 1/6
Probability of rolling a 5 is 1/6
Probability of rolling a number less than 5 is 4/6 = 2/3
So the only way to win is rolling a six
The expected value is thus;
1/6(3) - 0(1/6) - 2/3(1)
= 1/2 - 2/3
= -$0.17
Since the game gives a negative expected value, it is not favorable and should not be played
In this exercise we want to use probability to calculate the value we will have in total after the event occurs, like this:
The value is -$0.17, with thw negative value, the game should not be played.
Let's organize the information given in the statement, in this way, we will have to:
Probability of rolling a six is 1/6Probability of rolling a 5 is 1/6Probability of rolling a number less than 5 is 2/3So the only way to win is rolling a sixWith this combination of values, we find that the probability will be calculated as:
[tex]1/6(3) - 0(1/6) - 2/3(1)= 1/2 - 2/3\\= -$0.17[/tex]
See more about probability at brainly.com/question/795909
What is the following product?
(xsqrt7-3sqrt8)(xsqrt7-3sqrt8)
Answer:
7x^2 -12x(sqrt 14) + 72
Step-by-step explanation:
Use foil and you get
x^2(7) - (3x(sqrt56))+(-3x(sqrt56))+ 9(8)
= The inner terms simplify to -6x(sqrt14) + (-6x(sqrt14)) = -12x(sqrt14)
so answer is
7x^2 -12x(sqrt 14) + 72
PLS HELP MEEEEEEE
1/2 servings are in a box of oatmeal that contains6 3/4 cups of oatmeal.
Answer: B) 13 & 1/2
========================================================
Explanation:
There are a few ways to approach this problem. It might be easiest to convert all the fractions to decimal form
1/2 = 0.5
3/4 = 0.75
6 & 3/4 = 6 + 3/4 = 6 + 0.75 = 6.75
The problem is rephrased as: "How many 0.5 cup servings in a box of oatmeal that contains 6.75 cups of oatmeal?"
To find out, we divide the two values (large over small) to get 6.75/0.5 = 13.5
Then convert back to a mixed number:
13.5 = 13 + 0.5 = 13 + 1/2 = 13 & 1/2
--------------------
Side note: The reason why we divide is due to this
x = number of servings
0.5x = total number of cups = 6.75
So we're effectively solving the equation 0.5x = 6.75, in which we divide both sides by 0.5
Which of the following is the largest Customary Unit of time?
Answer:
The largest Custorary Unit of time is a year
Set up a proportion and solve the following!
Two out of five students in the ninth grade have braces. If there are 325 students in the ninth grade, how many have braces?
What is the surface area of a cone with a height of 15 and the diameter of 12?
Answer:
417.62
[tex]A=πr(r+\sqrt{x} h2+r2)[/tex]Step-by-step explanation:
because radius is half of diameter and then you would use this equation to solve
The price of a shirt was reduced from $40 to $28. By what percentage was the price of the shirt reduced?
Answer:
10% of 28=2.8
40% of 28=11.2
Step-by-step explanation:
11.2
Answer:
12
Step-by-step explanation:
Steven went to the store and bought five sweatshirts. He spent $45. What was the price of each shirt?
Answer:
$8
Step-by-step explanation:
Answer:
it is 9 dollars
Step-by-step explanation:
you do 5 x x =45 x is 9
Jeremy 3 pounds of ground beef to make hamburgers how many 1/3 pound hamburgers can he make?
Answer:
its 9
Step-by-step explanation:
3x1/3 you don't do nothing with the 1 so don't
multply it then what you do is 3x3 then you get 9
hope it helps!
4 pairs of pants for 22.60. what is the unit rate?
Answer:
$5.65
Step-by-step explanation:
Divide 22.6 / 4.
5.65
Best of Luck!
Expand.
Your answer should be a polynomial in standard form.
(7g+3)(-g-3)=
Pls tell me how to convert a fraction into a decimal! I’m having sm trouble understanding:(
Ps: NOT MY COMPUTER!
Sorry if it’s dirty.
Answer:
1. 0.875 2. 0.666… 3. 2.25 4. 0.8333…
Step-by-step explanation:
The easiest way to convert a fraction to a decimal is to divide the numerator (the top of the fraction) by the denominator (the bottom of the fraction) by using a calculator. The resulting answer will be the value of the fraction expressed as a decimal number. Hope you get it! :)
Antonio can run 22.5 miles in 1/3 hour what is his average speed in miles per hour
Answer:
22.5 divided by 3=7.5
Step-by-step explanation:
Using the pencil, plot the point (-1,-5).
. Tickets to a baseball game are $20 for an adult and $15 for a student. A school buys tickets for 45 adults and 600 students. How much money will the school spend for the tickets?
Do not include the dollar sign ($) in your answer.
Answer:
Step-by-step explanation:
900 for adults 9000 for kids in all 9900
Answer:
20 X 45=900 + 15 X 600=9000
the answer is 9900
Step-by-step explanation:
Which expression is equivalent to 60 - 3y - 9?
A: 3(17 - y)
B: 3(20 - y) -3
C: 17(3 - y)
D: 20(3 -3y) -9
Answer:
the answer has to be 3(17-y)
Step-by-step explanation:
I'm pretty sure about that cause what I did at first is subtract the numbers.
60-3y-9
=51-3y
factor our 3 from the expression.
3(17-y)
Answer:
option A
Step-by-step explanation:
the expression given is equal 60-3y-9= -3y+51
The option A doing the distributive property will give you the same answer
3(17) and 3(-Y) = 51 - 3y
Find any points of discontinuity for y = 5x+6/x2+6x+9
Answer:
x = -3 is the point of discontinuity.
Hence, option B is correct.
Step-by-step explanation:
Given the expression
[tex]y=\frac{5x+6}{x^2+6x+9}[/tex]
In order to determine the discontinuity, the denominator must be 0.
so let us solve the denominator to get the values of x
[tex]x^2+9x+9\:=0[/tex]
[tex]\left(x+3\right)^2=0[/tex]
Using the zero factor principle
if ab=0, then a=0 or b=0 (or both a=0 and b=0)
[tex]x+3=0[/tex]
Subtract 3 from both sides
[tex]x+3-3=0-3[/tex]
[tex]x = -3[/tex]
Therefore, x = -3 is the point of discontinuity.
Hence, option B is correct.
Best answer gets BRAINLIEST!!!
Answer:
B
Step-by-step explanation:
Literally I really need this question pls help points and brainlest
Answer:
C
Step-by-step explanation:
Can I get brainliest
C because it is the only option that depicts 2 blue marbles and one red one
Answer:
Step-by-step explanation:
whatever nobody cares and that person gave you the wrong answer
What is the measure of AC (the minor arc)?
Answer:
I think the answer is 124 though I'm in 8th grade . I have completed algebra 1.
Step-by-step explanation:
The other side of the circle has four minor arcs since they each measure less than 180 .
he elimination method is ideal for solving this system of equations. By which number must you multiply the second equation to eliminate the y-variable, and what is the solution for this system?
x + 3y = 42
2x − y = 14
A.
Multiply the second equation by -3. The solution is x = 12, y = 9.
B.
Multiply the second equation by -2. The solution is x = 12, y = 10.
C.
Multiply the second equation by 2. The solution is x = 15, y = 9.
D.
Multiply the second equation by 3. The solution is x = 12, y = 10.
Answer:
D. Multiply the second equation by 3. The solution is x = 12, y = 10.
Step-by-step explanation:
First, look at the y variable of the first equation. It is 3y.
To solve by elimination, the variables have to add together to 0.
So, -3y needs to be added to -3y to eliminate the y variable.
The second equation has the y variable of -y, so it has to be multiplied by 3.
So, answer choice D is the correct answer.
Why were new trade routes needed in the fifteenth century?
Answer:
In the 15th century, Europe sought to expand trade routes to find new sources of wealth and bring Christianity to the East and any newly found lands. This European Age of Discovery saw the rise of colonial empires on a global scale, building a commercial network that connected Europe, Asia, Africa, and the New World.
evaluate and simplify
4a - 2(a + b) + 1 = ? a=2 b=4
Answer:
-3
Step-by-step explanation:
4(2)-2(2+4)+1=8-2(6)+1=9-12=-3
Answer:
13
Step-by-step explanation:
4a-2=4×2-2=6
6(2+4) =6×6+1
Help please i need some help
PLEASE HELP ME!!! taking a test rn & need help!!!!
A sample of 600 grams of a radioactive substance decays according to
the function At=600e-0.036t, where t is the time in years. How much of the
substance will be left in the sample after 30 years? Round to the nearest
whole gram.
A. 0 g
B. 2947 g
C. 204 g
D. 1 g
Answer:
After 30 years 204 g of the substance will be left.
Option C is correct option.
Step-by-step explanation:
The function given is: [tex]A=600e^{-0.036t}[/tex]
where t is time in years.
We need to find how much of the substance will be left in the sample after 30 years?
So, we have t= 30
Putting value of t and find value of A
[tex]A=600e^{-0.036t}\\A=600(\frac{1}{e^{0.036*30}})\\A=\frac{600}{e^{1.08}} \\A=\frac{600}{2.94467}\\A=203.75 \approx 204[/tex]
So, After 30 years 204 g of the substance will be left.
Option C is correct option.
Jenny peddled her bike 30 miles in 40 minutes. If she traveled at the same speed, how far would she travel in 3 hours?
Answer:
Jenny cycles the grand distance of 29 and one third of a mile.
Step-by-step explanation:
I want to answer this using fractions and without multiplying by an awkward recurring decimal.
Cycling 11 miles in 45 minutes and continuing at the same speed means she will go 22 miles in 90 minutes
To scale up 90 mins to the required 120 mins (2 hours) multiply by 4/3.
22 x (4/3) = 88/3
Jenny will travel 88/3 miles in 2 hours.
Not happy with top heavy fractions?
Let's round up 88/3 to 90/3 by adding 2/3.
90/3 = 30 and to get back to the answer we just take away the two thirds we added when rounding up.
Jenny cycles the grand distance of 29 and one third of a mile.
I think that is the correct answer.