wath do you meen point to the mathe matical problem
Step-by-step explanation:
okay
Solve the following proportion.
easy vector problem! show work/explain please :)
Answer:
Step-by-step explanation:
a = 2i + 3j + zk
b = xi + 1j + 4k
Given a X b = 6i -14j +5k
a X b = | i j k|
|2 3 z|
|x 1 4|
a X b = i(12-z) - j(8 - xz) + k(2-3x) = 6i -14j +5k
equate the coefficients of i , j and k
12- z = 6; implies z = 6
8 - xz = -14 implies 8 - 6x = -14
2-3x = 5 implies 2 - 3x = 5 implies x = -1
Question 2 of 10
How many solutions are there to the equation below?
11x + 25 = 7x + 15
Is this answer correct?
Answer:
yes
Step-by-step explanation:
Answer:
yes i belive so
Step-by-step explanation:
what times what equals 3/8
Answer:
1/8 * 3
Step-by-step explanation:
1/8*3 means the numerator gets multiplied by 3 so we get (1*3)/8 which is 3/8
The equivalent value of the fraction is A = 3/8 = ( 3/4 ) ( 1/2 )
Given data ,
Let the equation be represented as A
Now , the value of A is
Let the first fraction be p
Let the second fraction be q
Now , A = pq
when the value of p = 3/4
And , when the value of q = 1/2
On simplifying the equation , we get
3/8 = ( 3/4 ) ( 1/2 )
So , the left hand side of the equation is equated to the right hand side by the value of ( 3/4 ) ( 1/2 )
A = ( 3/4 ) ( 1/2 )
A = 3/8
Therefore , the value of A = 3/8 = ( 3/4 ) ( 1/2 )
Hence , the fraction is A = 3/8 = ( 3/4 ) ( 1/2 )
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And article says that 15% of a non-profits Donations about 30,000 a year comes from individual donors what is the total amount of down donations to nonprofit receives
Answer:
200,000
Step-by-step explanation:
Step one:
given data
We are given that 15% of a non-profits Donations is about 30,000
Required
The amount in total received in donation
Step two:
Let the total donation be x
so
15/100*x= 30000
solve for x
0.15*x= 30000
divide both sides by 0.15
x= 30000/0.15
x=200,000
Hence the total donation is about 200000
There are 2 equal groups of 8 books on a shelf. One group is all Reading books. The other group has 3 Math books and the rest are Science books. How many Science books are there?
Answer:
its 5
Step-by-step explanation:
because 8 are reading okay so the other 8 are math and sciences ,uf you have 3 math books how many sciences? then its 8-3=5
convert 8.132132132... to a rational expression in the form of a fraction
Let x = 8.132132132... .
Then 1000x = 8132.132132132... .
Subtracting x from 1000x eliminates the fractional part, leaving you
999x = 8132 - 8 = 8124
Then
x = 8124/999 = 2708/333
A gymnasium is 96 feet long and 75 feet wide. On a blueprint, the
gymnasium is 5.5 inches long. To the nearest tenth of an inch,
what is the width of the gymnasium on the blueprint?
Scale factor for the dimensions of the gymnasium on the blue print will be represented by the expression,
Scale factor = [tex]\frac{\text{Dimension of the blueprint}}{\text{Dimension of the original}}[/tex]
Length of the gymnasium = [tex]96[/tex] feet
Length of the gymnasium on the blueprint = [tex]5.5[/tex] inches
Therefore, scale factor for the blueprint = [tex]\frac{5.5}{96}[/tex]
= [tex]0.0573[/tex]
If the width of the gymnasium = [tex]75[/tex] feet
For the width on the blueprint,
[tex]0.0573=\frac{\text{Width on the blueprint}}{75}[/tex]
Width on the blueprint = [tex]4.29[/tex]
≈ [tex]4.3[/tex] inches
Therefore, width of the gymnasium on the blueprint will be [tex]4.3[/tex] inches.
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What was the original price of a bicycle thats 10% off whose sale price is $63?
Answer:
70
Step-by-step explanation:
h(x)=-x^2+10x-16 What is the height of the ball at the time it is thrown
Answer:
0m
Step-by-step explanation:
Before the ball is thrown, it is at the ground level. At the ground level, the height is zero. Substitute h = 0 into the equation;
h(x)=-x^2+10x-16
0=-x^2+10x-16
x^2-10x+16 = 0
Factorize
x^2-8x-2x+16 = 0
x(x-8) - 2 (x-8) = 0
x-2 = 0 and x - 8 = 0
x = 2 and 8
At x = 2
h(2) = -2^2 + 10(2) - 16
h(2) = -4 + 4
h(2) = 0
Hence the height of the ball at the time it is thrown is 0m
2/3 feet=_____ inches 2/5 m=_____ cm
5/6 year=_____ months
Answer:
2/3 ft= 8 in 2/5 m= 40 cm 5/6 yr= 10 months
Step-by-step explanation:
HELLLPPPPPPP
What is the solution of the system of equations? Write your answers in the blanks.
4x-2y=10 2x+y=-3 → =-2x-3 4x-2(________________)=10 y=-2(________________)-3 4x+4x+6=10 y=________________ 8x=4 x=________________
Answer:
fjvg8rg95ig9tjbopetjihefgiuo ugn idgjbiohionuion ijj ngibj irogjk0 krlkntirion pohtk ioh ht nh h h h h h
Step-by-step explanation:
Wich expression shows the product of 9 and a number?
Answer:
There are two and they both mean the same thing.
Step-by-step explanation:
1. 9 x (times) n
2. 9n
I hope this helps u! :D
juliet school collected 480 can food last month witch represented 80 percent of rheir goal. What is the toatal of her goal? PLEASE HELP ME I NEED TO HAVE THIS FINISHED ITS THE LAST DAY IN THE SEMESTER FOR OVERALL GRADES!?!?!?
Answer: 600 canned foods was the total.
Step-by-step explanation: We need to find out what‘s 100% of 480. Since 480 canned foods is 80%, we can divide 480 by 8 which gives us 60. Aka 60 canned foods = 10%. Now, we multiply 60 by 10 which gives us 600. Hope this helps!
What is the compound interest on investing $600 for 3 years at 7% per annum?
Answer:
About $735.03
Step-by-step explanation:
The compound interest formula is A=P(1+r/n)^nt
P is the original amount (principal)
r is the rate
n is the number of times compounded (1 for this one since it is annual)
and t is the time compounded
Imagine selecting a US high school student at random. Define the random variable X = number of languages spoken by the randomly selected student. The table below gives the probability distribution of X, based on a sample of students from the US Census at School database.
What is the expected average number of languages a student knows?
Find and interpret the standard deviation for the data.
Answer:
Expected value = 1.457
Standard deviation = 0.671
Step-by-step explanation:
Given the data:
Language (X) : 1 ____ 2 ____ 3 ____ 4 ____ 5
P(X) _____0.630 _ 0.295 _0.065_0.008_0.002
Expected value :
ΣX*P(x) = (1*0.630)+(2*0.295)+(3*0.065)+(4*0.008)+(5*0.002)
= 1.457
Standard deviation : sqrt(Var(x))
Var(X) = Σx^2p(x) - E(x)
Var(X) = (1^2*0.630)+(2^2*0.295)+(3^2*0.065)+(4^2*0.008)+(5^2*0.002) - 1.457^2
= 2.573 - 1.457^2
= 0.450151
Standard deviation = sqrt(0.450151) = 0.6709329
= 0.671
Average Expected number of languages known by student, ie Expected Value = 1.457 ; Standard Deviation of Data = 0.45015
A] Expected Value represents the average, calculated by summing products of outcomes & their corresponding probabilities. E (X) = X . P (X) , where X are events & P (X) are corresponding probabilities.
E (X) = 1 (0.63) + 2 (0.295) + 3 (0.065) + 4 (0.008) + 5 (0.002) = 1.457
B] Standard Deviation denotes the measure of dispersion, spread around average. Formula = [tex]X^2 P (X) - [ E (X) ]^2[/tex]
1 (0.63) + [tex]2^2[/tex] (0.295) + [tex]3^2[/tex] (0.02,65) + [tex]4^2[/tex] (0.008) + [tex]5^2[/tex] (0.002) - [tex](1.457)^2[/tex]
= 2.573 - (1.457)^2 = 0.45015
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Brainlest and points need help with this question !
Answer:x=10.25 +y
Step-by-step explanation:
Answer:
i think its 3
Step-by-step explanation:
Translate the following word pharse into algebraic expression: Nine times the difference of 5 and Y
Answer:5-y x 9
Step-by-step explanation: 5-y times 9
Answer:
9 × 5-y maybe bc times means multiply and difference means subtract but sorry if u get it wrong
What is the constant of proportionality between the number of pages read and the number of hours spent reading?
Answer:
45
Step-by-step explanation:
The constant of proportionality is 45
PLSSS HELP! PLEASEEEEEEEEEEEEEEEEEEEEEE!
Answer:
81?
Step-by-step explanation
i might be wrong, if am delete this haha
The LCM of 12ab² and 3ab³
Answer:3ab^2 or 12ab^3
i think this is it
Step-by-step explanation:
answer all you get brainiest
Step-by-step explanation:
1. 44
2. 26 95
3. 294
4. 126
5. 36.04
6. 52.02
In the U.S. presidential election of 1864, Abraham Lincoln received 2,218,388 of the 4,031,887 votes. About what fraction of the votes did Lincoln receive? Put in simplest form.
Answer:
2,251,926
Step-by-step explanation:
What is the solution to the system of equations graphed below? (-5,1). (1,-5). (3,-4). (-4,3)
Answer:
(-5,1)
Step-by-step explanation:
Because the red line (graphical representation of one equation) and the blue line (graphical representation of the other equation) intersect at (-5,1), the solution to the systems of equations is (-5,1).
Brendan Gan is about to drive to Kuala Lumpur from Johor Bahru. The distance from Johor Bahru to Kuala Lumpur is 330 km. Brendan's car can drive 60 miles using 1 gallon of petrol The current petrol costs are RM1.85 per liter. Calculate the total petrol cost for Brendan to drive from Johor Bahru to Kuala Lumpur. Use: (1 gallon = 4.5 liters 1 mile = 1.61 km Round up answer to 2 decimal places (8 marks)
Answer:
He will spend RM 28.44.
Step-by-step explanation:
Each mile has 1.61 km.
So the distance, in miles, is given by:
[tex]\frac{330}{1.61} = 205[/tex]
For 60 miles, he uses 4.5 liters. So, for 205 miles, he will use:
[tex]\frac{205*4.5}{60} = 15.375[/tex]
For the trip, he uses 15.375 liters. Each liter costs RM 1.85. So he will spend:
[tex]15.375*1.85 = 28.44[/tex]
He will spend RM 28.44.
Mr. Pham wrote the equation below on the board.
18 - 7x=-20.5
What is the value of x?
Answer:
X = 5.5Step-by-step explanation:
18 - 7x = -20.5
18 + 20.5 = 7X
38.5 = 7X
X = 38.5/7
X = 5.5
estimate the weight of 6 apples explain your thinking
What is the Parallel and Perpendicular slope of m= -2? (PLZ SHOW HOW YOU GOT THE ANSWER)
Answer:
parallel=-2, perpendicular=1/2
Step-by-step explanation:
Parallel slopes mean the slopes are the same, and perpendicular slopes are the reciprocals of each other.
Answer:
Parallel slope of -2 is -2.Perpendicular slope of -2 is 1/2.Step-by-step explanation:
A line in a graph parallel/collinear to another line has same slope.
A line perpendicular to the another line has negative and reciprocal slope of the given line.
A hockey player needs to shoot a puck 55 meters from his current location to his opponent's goal to score a goal. After the shot, the puck is 120 centimeters from his opponent's goal. If there are 100 centimeters in 1 meter, how many meters did the puck travel?
Answer:
The puck traveled 53.8 meters.
Step-by-step explanation:
Currently, the player is 55 meters away from the opponent's goal.
After the shot, the puck is 120 centimeters = 1.2 meters from the opponents goal.
So, this means that the puck traveled 55 - 1.2 = 53.8 meters.
Answer:
(25,0)
(50,20)
symmetric
Step-by-step explanation: