Answer:
The angle between the two vectors
∝ = 64°
Step-by-step explanation:
Step(i):-
Given that the vectors
[tex]a^{-} = i^{-} - 2j^{-} +5k^{-}[/tex]
and
[tex]b^{-} = 3i^{-} +j^{-} -2k^{-}[/tex]
[tex](a^{-} . b^{-} ) = (i^{-} - 2j^{-} +5k^{-} ) . (3 i^{-} + j^{-} - 2k^{-} )[/tex]
= 3 (i⁻ . i⁻) - 2(j⁻.j⁻) -10(k⁻.k⁻)
= 3 - 2 -10
= -9
Step(ii):-
Let '∝' be the angle between the two vectors
[tex]cos\alpha = \frac{a^{-}.b^{-} }{|a||b|}[/tex]
[tex]cos\alpha = \frac{|-9| }{\sqrt{1+4+25}\sqrt{9+1+4} }[/tex]
[tex]cos\alpha = \frac{|-9| }{\sqrt{30}\sqrt{14} }[/tex]
[tex]\alpha =cos^{-1} ( \frac{|-9| }{\sqrt{30}\sqrt{14} })[/tex]
∝ = cos⁻¹(0.4392) = 63.947
Final answer:-
The angle between the two vectors
∝ = cos⁻¹(0.4392) = 63.947
∝ = 64°
HELP ME ASAP!!!!!!!
WINNER GETS BRAINLIEST, THANKS AND A STAR RATING OF EXCELLENT!!!!!!!
Please friend request me and I'll accept
Answer:
3hours and 30 minutes moving and 2 and a half hours stationary
Step-by-step explanation:
1 hour + 30 minutes + 1 hour + 30 minutes + 30 minutes for moving
1 hour + 1 hour + 30 minutes for stationary.
IM GIVING BRAINLIEST!!!PLEASE HELP!!!
The answer is C aka answer 3
Whats 4 + 4 + 8 + 8 + 10 + 16 + 50 x 10 = ?
Answer:
550
4 + 4 + 8 + 8 + 10 + 16 + (50 x 10)
Step-by-step explanation:
Answer:
550 is the answer
..............
what is the circumference of
d= 7yd
c = ?
Answer: 7pi
Step-by-step explanation:
To find the circumference do radius (d/2)*2*pi
substitute 7*pi
7pi
A survey of 120 twelfth-graders finds that 36% were carrying more than $15 on the day of the survey. Use the margin of error to complete the following. Round to the nearest whole percent. An interval that will likely include the proportion of students in the population of twelfth-graders who carry more than $15 is ?
Answer:
An interval that will likely include the proportion of students in the population of twelfth-graders who carry more than $15 is 960
Step-by-step explanation:
For example, Condition 1: n(.05)≤N
• The sample size (10) is less than 5% of the population (millions of musicians), so
the condition is met.
• Condition 2: np(1-p)≥10
• =
2
10
= .2
• 1 − = 10 .2 1 − .2 = 1.6 . This is less than 10 so this condition is not
met.
It would not be practical to construct the confidence interval.
URGENT I NEED ANSWER WITH WORK
All the students in the 6th grade either purchased their lunch or brought their lunch from home on monday. 24% of students purchased lunch and 190 students brought lunch from home. How many students are in the 6th grade?
a 76
b 166
c 214
d 250
Solve for v.
20 = 4 x v
v = ??
Answer:
v = 5/x
Step-by-step explanation:
Hope this helped
Answer: v=5
→Hope this helps!←
Which two of the following numbers are rational?
1/3
.10
.π
√2
Answer:
1/3, 0.10
Step-by-step explanation:
Rational numbers can be expressed as a fraction of two integers.
1/3 is rational. When it is expressed as a fraction, it's 1/3. 1 is an integer, and 3 is an integer
0.10 is rational. It can be rewritten to be expressed as the fraction 1/10; 1 is an integer, and 10 is an integer.
.[tex]\pi[/tex] is irrational, because when expressed as a fraction, it is 1/[tex]\pi[/tex]. 1 is an integer, but [tex]\pi[/tex] is not. Both numbers need to be integers in order to be rational. Therefore, it is irrational
√2 is irrational. When expressed as a fraction, it's √2/1. √2 is not an integer. 1 is an integer. However, both numbers have to be integers in order to be rational. Therefore, √2 is not rational.
Please help!!!!!!!!!!!!!!!
Answer:
4 if not im SUPER sorry!!!!!!!!
Step-by-step explanation:
round the number 2788.32 to the nearest whole number
2788 would be the answer since 0.32 would round down so its 2788
5x/7-5=50 plsssssssssss noBOTS
*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆**☆*――*☆*――*☆*――*☆
Answer: x=77
Explanation:
5x/7 - 5 = 50
5x/7 = 55
5x = 385
x = 77
I hope this helped!
<!> Brainliest is appreciated! <!>
- Zack Slocum
*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆**☆*――*☆*――*☆*――*☆
Answer:
5x/7 - 5 = 50
5x/7 = 50+5
5x/7=55
5x=55x7
5x = 385
x=385/5
x=77
PLEASE HELP, I NEED THIS OR I WILL FAIL MY CLASS PLZZZZ.
30 POINTS AND BRANNIEST
( PLEASE SHOW WORK OR I MIGHT NOT GIVE BRAINIEST )
Answer:
3
Step-by-step explanation:
i dont know how to show the work i did it in my head
Someone plz help me I will give brainliest
Answer:
A
Step-by-step explanation:
Note: "of" is a great indicator of multiplication in math problems.
In option A, Lily eats [tex]\frac{3}{8}[/tex] of the grapes, and there are 4 grapes, so we know it is
(3/8)*4 or 4*(3/8)
In the other options the "of" is followed by a unit that is not 4, such as a foot, a mile, and an hour.
at a light bulb manufacturing plant 2% of the light bulbs are found to be defective if the plant have 56 defective lightbulds on a certain day how many did it manufacture that day
Answer:2800
Step-by-step explanation:
So 2 percent is 2/100 or 1/50 so just multiply 56 by 50 and you will get 2800
SOLVE
1. Afton made a chicken dish for dinner. She added a 10 - ounce package of vegetables and a 14- ounce package of rice to 40 ounces of chicken. What was the total weight of the chicken dish in pounds?
__________________________________________________________________
2. A jar contains 26 fluid ounces of spaghetti sauce. How many cups of spaghetti sauce do 4 jars contain?
__________________________________________________________________
3. Coach kent brings 3 quarts of sports to drink to soccer practice. He gives the same amount of the drink to each of his 16 players. How many ounces of the drink does each player get?
__________________________________________________________________
4. Leslie needs 324 inches of fringe to put around the edge of a tablecloth. The fringe comes in lengths of 10 yards. If Leslie buys 1 package of fringe how many feet of fringe will she have left over?
_________________________________________________________________
5. An office supply company is shipping a case of wooden pencils to a store. There are 64 boxes of pencils in the case. If each box of pencils weighs 2.5 ounces, weight, in pounds, of the case of wooden pencils?
__________________________________________________________________
Answer:
Step-by-step explanation:
Numer 1: The answer to this problem is 4 pounds
Numer 2: 13 cups
Explanation:
Four jars of sauce with 26 oz would be a total of 104 ounces
4 x 26 = 104
1 cup contains 8 ounces.
104 oz x [tex]\frac{1cps}{8oz}[/tex]=13 cups
Numer 3: Since, 1 quartz = 33.307 ounces ( approx )
⇒ 3 quartz = 99.921 ounces
If the total number of players = 16,
And, the given fluid is divided equally among these players,
Then the total quantity of fluid each player get
[tex]\frac{toral quality od drink }{ total players}[/tex]
=[tex]\frac{99.921}{16}[/tex]
=6.24505625= 6.245
Hence, each player will get around 6.245 ounces of the drink.
Number 4:
36 inches or 3 feet is the correct answer
Number 5 ;
The correct answer for the question that is being presented above is this one: "10 pounds." An office supply company is shipping a case of wooden pencils to a store. There are 64 boxes of pencils in the case. If each box of pencils weighs 2.5 ounces, then...
There are:
64 boxes of pencils
1 box weighs 2.5 ounces
Find its total weight in pounds.
1 ounce = 0.0625 pounds
64 boxes * 2.5 ounces = 160 ounces
160 ounces * 0.0625 pounds/1 oz = 10 pounds.
The 64 boxes of pencils weigh 10 pounds.
PLEASE HELP I NEED THIS IS DUE IN AN HOUR!!! 40 POINTS!!!Sherelle and Venita’s grandmother said that one of the bags has a coin from 1916. What reasons might Sherelle give for saying that the 1916 coin is most likely in her bag? What reasons might Venita give for saying that the 1916 coin is most likely in her bag? Whose bag do you think is more likely to contain the 1916 coin? Explain your reasoning. Answer:
Answer:
I dont know about Sherelle, but Venita's grandmother can give a reason that as she is from older age, most probably, the coin can be in her bag...... And the coin, according to me will be in grandmother's bag....
Hope it helps!!!
needddddd helpppppp asapppp/ Necesitoooo ayudaaaaa rapidooo
Answer:
42 cm^2
Step-by-step explanation:
armyphobic
The height of a cylinder is 8 centimeters. The circumference of the base of the cylinder is 14 pi. What is the measurement of the volume of the cylinder in cubic centimeters? Round to the nearest tenth.
Answer:
15
Step-by-step explanation:
Neeed help please???????!!!!!!
A spinner is evenly divided into 9 sections and numbered from 1 through 9. What is the probability of spinning a number less than 5 in a single spin?
Answer:
2
Step-by-step explanation:
Count the spins
Number 7 please help 10 points no links pleAse
Answer:
Option C : 25Step-by-step explanation:
Given,
Number of rainy days = 18
Number of cloudy days = 14
Number of sunny days = 29
Therefore,
Number of days either sunny or cloudy = 14 + 29 = 43
So,
Number of more days sunny or cloudy than rainy are
= 43 - 18 = 25
Hence,
Option C 25 is the correct answer.
1. To the nearest hundredth, what is the value of x?
Answer:
41.51
Step-by-step explanation:
cos(41)=x/55
x=cos(41)*55≈41.51
i think the answer is option b
2 elephants and 15 tigers plus 4 elephants equal?
Answer:
6 elephants + 15 tigers
Step-by-step explanation:
(Im assuming that the animals are meant to be variables)
X = elephants, y = tigers
2x + 15y + 4x
Combine like terms: 2x + 4x +15y
Simplify: 6x + 15y
for brainiest:):):):):):):):):)
Answer:
1=80%
2=44%
3=11%
4=15
5=30%
6=21%
7=2%
8=9%
Step-by-step explanation:
Hopefully they are all correct but I tried my best
i need help please think before you answer
Answer:a^2
Brailniest if this helped ;)
Also the ^ means an exponent just so you know
987 mm = ___ cm
hurry i need help.
Answer:
987 milmeters equal to 98.7 centimeters
Step-by-step explanation:
To figure these kinds of problems divide the millimeter by 10 and you will get the centimeter value.
Hope that helps!
Help ASAP please help me easy question hurryyyyy please ASAP please please
Please find the attached photograph for your answer
13
Find the percent of change in the time to run a
mile from June to September. Round to the
nearest tenth of a percent. (Hint, make sure
change each to seconds first!)
7:45
(5:57
June
September
Answer:
23.225%
Step-by-step explanation:
Runtime in June (x1) = 7:45 = (7 * 60) + 45 = 465
Runtime in September (x2) = 5:57 = (5*60)+57 = 357
Percentage change in Runtime :
[|x2 - x1|÷ x1] * 100%
[|357 - 465| ÷ 357] * 100%
108 / 465 * 100%
0.23225 * 100%
= 23.225%
Yes or no???????????????
It is a right triangle.
What are roots of quadratic equations?
Answer:
Here's a link that I found that was helpful to me: http://www.biology.arizona.edu/biomath/tutorials/quadratic/roots.html#:~:text=Roots%20are%20also%20called%20x%2Dintercepts%20or%20zeros.&text=The%20roots%20of%20a%20function,%2B%20bx%20%2B%20c%20%3D%200.
Step-by-step explanation:
