Answer:
{x,y}={21,41}
Step-by-step explanation:
Step by Step Solution:
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System of Linear Equations entered :
[1] 4x - 2y = 2
[2] 3x - 2y = -19
Graphic Representation of the Equations :
-2y + 4x = 2 -2y + 3x = -19
Solve by Substitution :
// Solve equation [2] for the variable x
[2] 3x = 2y - 19
[2] x = 2y/3 - 19/3
// Plug this in for variable x in equation [1]
[1] 4•(2y/3-19/3) - 2y = 2
[1] 2y/3 = 82/3
[1] 2y = 82
// Solve equation [1] for the variable y
[1] 2y = 82
[1] y = 41
// By now we know this much :
x = 2y/3-19/3
y = 41
// Use the y value to solve for x
x = (2/3)(41)-19/3 = 21
Solution :
{x,y} = {21,41}
Answer: {x,y}={21,41}
An airplane flying at an altitude of 2600 m is approaching an airport run away located 56 km away (from the airplane to the run away). Calculate the airplane’s angle of decent. (Hint: the angle of decent is the same as the angle of depression.)
Given :
An airplane flying at an altitude of 2600 m is approaching an airport run away located 56 km away.
To Find :
The airplane’s angle of decent.
Solution :
Height of plane, h = 2600 m.
Horizontal distance of airplane from vertices is, d = 56 km = 56000 m.
Let, angle of depression is Ф.
So,
[tex]tan \ \phi = \dfrac{56000}{2600}\\\\tan \ \phi = 21.54\\\\\phi = 87.34^o[/tex]
Therefore, the angle of decent is 87.34°.
Hence, this is the required solution.
-6x+9-4x=14 The value for x
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[tex] - 6x + 9 - 4x = 14[/tex]
[tex] - 6x - 4x + 9 = 14[/tex]
Collect like terms
[tex]( - 6 - 4)x + 9 = 14[/tex]
[tex] - 10x + 9 = 14[/tex]
Subtract sides 9
[tex] - 10x + 9 - 9 = 14 - 9[/tex]
[tex] - 10x = 14 - 4 - 5[/tex]
[tex] - 10x = 10 - 5[/tex]
[tex] - 10x = 5[/tex]
Divide sides by - 10
[tex] \frac{ - 10x}{ - 10} = \frac{5}{ - 10} \\ [/tex]
[tex]x = - \frac{5}{10} \\ [/tex]
[tex]x = - \frac{5}{5 \times 2} \\ [/tex]
[tex]x = - \frac{1}{2} \\ [/tex]
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Average movie prices in the United States are, in general, lower than in other countries. It would cost $79.98 to buy three tickets in Japan plus two tickets in Switzerland. Three tickets in Switzerland plus two tickets in Japan would cost $75.02. How much does an average movie ticket cost in each of these countries?
Answer:
$79.98-$75.02=$04.96
Answer:
$04.96 is right answer am I right or wrong hope I am right
What is the slope?
rise=6
run=12
Answer:
0.5
Step-by-step explanation:
Rise over run. 6/12 or divide. 6 divided by 12 equals 0.5.
Answer: 1/2
Step-by-step explanation:
6/12 simplified is 1/2
The volume V of gas varies inversely to the pressure P. The volume of a gas is 200 cm3 under pressure of 32 kg/cm2. What will be its volume under pressure of 40 kg/cm2?
Answer:
V = 160 cm³ when P = 40 kg/cm²
Step-by-step explanation:
V = k / P
Where,
V = volume
P = pressure
k = constant of proportionality
The volume of a gas is 200 cm3 under pressure of 32 kg/cm2
V = k / P
200 = k / 32
Cross product
200 × 32 = k
6,400 = k
k = 6,400
What will be its volume under pressure of 40 kg/cm2?
V = k / P
= 6,400 / 40
= 160
V = 160 cm³
Points (−6, 3) and (−6, −3) on the coordinate grid below show the positions of two dogs at a park:
Which statement best describes the relationship between the positions of the two players?
Dog 1's position is Dog 2's position reflected across the y-axis; only the signs of the y-coordinates of Dog 1 and Dog 2 are different.
Dog 1's position is Dog 2's position reflected across the x-axis; only the signs of the y-coordinates of Dog 1 and Dog 2 are different.
Dog 1's position is Dog 2's position reflected across the x-axis; only the signs of the x-coordinates of Dog 1 and Dog 2 are different.
Dog 1's position is Dog 2's position reflected across the y-axis; only the signs of the x-coordinates of Dog 1 and Dog 2 are different.
Answer:
The answer is B.
Step-by-step explanation:
Points (−6, 3) and (−6, −3) on the coordinate grid below show the positions of two dogs at a park:
A coordinate plane is shown. There is a point at negative 6, 3 labeled Dog 1. There is a point at negative 6, negative 3 labeled Dog 2.
The area of a rectangle is less than 81 square centimeters. The length of the rectangle is 9 centimeters and the width is x centimeters. Select the possible value(s) of x.
Answer:
Given
The area of a rectangle is less than 81 square centimeters
length 9cm
width =x cm
Step-by-step explanation:
Area of rectangle=length ×width
= 9×X
Area of rectangle is less than 81 cm^2
So 9x-81=0
X=81/9
X=9
So the value of xis 9
Help me with my ixl please, I don’t get this
Answer:
sas
Step-by-step explanation:
Sylvia plans to place 617 stamps in an album. Each page of the album holds 5 stamps. She uses division to find out how many full pages she will have. How many full pages will she have?
Answer:
123 full pages
Step-by-step explanation:
Given
[tex]Total\ Stamps = 617\ stamps[/tex]
[tex]Each\ Page = 5\ stamps[/tex]
Required
Determine the number of full page
To do this, we simply divide the total stamps by stamps in each page;
[tex]Pages = \frac{Total\ Stamps}{Each\ Page}[/tex]
[tex]Pages = \frac{617}{5}[/tex]
[tex]Pages = 123.4[/tex]
Then we record only the quotient
The quotient is the digits before the decimal
[tex]Pages = 123[/tex]
Hence, she has 123 full pages
I’m so confused. I need help :C
Answer:
Apple A
Step-by-step explanation:
Apple A 6.90/6 = 1.15 lb
Apple B 12oz/ (16oz or 1lb) =3/4 .90/(3/4) =1.2lb
Apple C 0.45/(1/4)= 1.8lb
77 is 56% of what number
Answer:
137.50
Step-by-step explanation:
please give branliest
Answer:
137.5 I think I might be wrong..
what is the smallest number you can make using 4 5 3 6
Answer:
3456
Step-by-step explanation:
Please help! what is an equation of a parabola with x-intercepts at (2,0) and (-7,0) and which passes through the point (1,32)?
Answer:
[tex]f(x)=-4(x-2)(x+7)[/tex]
Or, in standard form:
[tex]f(x)=-4x^2-20x+56[/tex]
Step-by-step explanation:
We can use the factored form of a quadratic equation:
[tex]f(x)=a(x-p)(x-q)[/tex]
Where a is the leading coefficient and p and q are the zeros of the quadratic.
We know that the x-intercepts are at (2, 0) and (-7, 0).
So, let's substitute 2 for p and -7 for q. This yields:
[tex]f(x)=a(x-2)(x+7)[/tex]
Now, we need to determine a.
We know that it passes through the point (1, 32). In other words, if we substitute 1 for x, we should get 32 for f(x). Therefore:
[tex]32=a(1-2)(1+7)[/tex]
We can now solve for a. First, compute:
[tex]32=a(-1)(8)[/tex]
Multiply:
[tex]32=-8a[/tex]
Divide both sides by -8:
[tex]a=-4[/tex]
So, the value of a is -4.
Therefore, our entire equation is:
[tex]f(x)=-4(x-2)(x+7)[/tex]
Notes:
We can expand this into standard form:
[tex]f(x)=-4(x-2)(x+7) \\ f(x)=-4(x^2+5x-14) \\ f(x)=-4x^2-20x+56[/tex]
Y=??? Answer pls I will try to answer one of urs if u do
Answer:
y=85
Step-by-step explanation:
Plis answer me this question is do tomorrow
Answer:
133? i just did 400 divided by 3 lol
Step-by-step explanation:
Answer:
60
Step-by-step explanation:
first, make sure that is the entire graph because if not this answer is wrong
20 people total and 3 picked science so 3/20=x/400 so 20x20=400 so 3x20 means the number of students 400 who picked science probably based on this and it is 60
What is the solution to the equation?
(x - 2)^1/2 + 4 = x
A. -3 and -6
B. 3 and 6
C. -3
D. 6
Answer:
(D). 6
Step-by-step explanation:
[tex]\sqrt{x-2}[/tex] + 4 = x and x ≥ 2
Let analyze the answer's choices
(A). Does not satisfy domain
(B). [tex]\sqrt{3-2}[/tex] + 4 ≠ 3
(C). Does not satisfy domain
(D). √(6 - 2) + 4 = 6 ⇒ x = 6 is the answer.
A 3 pack of light bulbs cost $3.45 a 4 pack of the same libels cost $4.20 which pack is the better value
Can someone help me with problems in the image?
Answer:
13.m<9=110 14.m<4=115 15.m<10=70 16.m<11=70 17.m<8=65 18.m<5=65 19.m<3=65 20.m<14=110
Step-by-step explanation:
2. Lillie's grandmother is making potato salad for a family reunion. She uses three
potatoes for each person attending the dinner. If she expects 24 people to
attend the reunion, which proportion can be used to solve for p, the number of
potatoes?
Answer:
3/4*24=p or 0.25*24 *******excluding Lily's grandmother and her.
Step-by-step explanation:
Hope this helps.
PLSS HELP AND DON'T DO IT FOR THE POINTS AND THE FIRST PERSON TO HELP GETS BRAINLIEST
Answer:
okay I will do fast give me free points
HELP!! CAN I PLEASE GET HELP I JUST NEED WHAT X IS ♀️?
Answer:
x = 2
Step-by-step explanation:
63x - 1 and 62x + 1 are corresponding angles and congruent, thus
63x - 1 = 62x + 1 ( subtract 62x from both sides )
x - 1 = 1 ( add 1 to both sides )
x = 2
Answer:
A.
Step-by-step explanation: 63 x - 1 62 x + 1
If in the 1980's about 60 million families had Tv's in their homes and in 2015 there was almost 100 million families that had Tv's in their home how many more Tv's were there in 2015?
Answer: 40 million
Step-by-step explanation:
Number of families that had TVs in their home in 1980s = 60 million
Number of families that had TVs in their home in 2015 = 100 million
To calculate the increase in TVs that were there in 2015, we subtract the number of families that had TVs in their home in 1980s which was 60 million from the number of families that had TVs in their home in 2015 which was 100 million. This can be expressed as:
= 100 million - 60 million
= 40 million
Answer:
it would be 1950 and 45 million
Step-by-step explanation:
x2+ x -12x-pWhat value should be substituted for p for the expression to reduce to (x + 4) ?
The selling price of an item is $480. It is marked down by 10%, but this sale price is still marked up from the cost of $360. Find the markup from cost to sale price.
Answer:
72
Step-by-step explanation:
i just know it
If the selling price of an item is $480. It is marked down by 10%, but this sale price is still marked up from the cost of $360.Then 72 is the markup from cost to sale price
What is Percentage?percentage, a relative value indicating hundredth parts of any quantity.
Given,
The selling price of an item is $480
It is marked down by 10%, but this sale price is still marked up from the cost of $360
We need to find 10% of 480
10/100=0.1
0.1×480=48
48 is the 10% of 480
Now subtract 48 from 480
480-48
432
Now subtract 360 from 432
432-360
72
Hence 72 is markup from cost to sale price
To learn more on Percentage click:
https://brainly.com/question/28269290
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What is the slope of a line perpendicular to the line whose equation is 2x-y=−6. Fully reduce your answer.
Answer:
m-perpindicular= -[tex]\frac{1}{2}[/tex]
PLEASE MARK BRAINLIEST
PLEASE HELP ME :(
evaluate each expression
7-9
Answer:
7. 64
8. -100000
9. 729
Step-by-step explanation:
I did it on a calculator.
The sum of 5 times a number and -6 is 2
How should I write that?
Answer:
5x-6=2
Step-by-step explanation:
Every ride at the country fair costs the same amount. The cost of one ride is $2.25. The fair entry fee is $6.50. Lupe paid the entrance fee and rode 7 rides. How much did Lupe pay in all?
Answer:
$22.25Step-by-step explanation:
Step one:
given data
we are told that the cost of one ride is $2.25
the entry fee= $6.5
the linear function for the situation is represented by the equation of line
y=mx+c
Step two:
let x be the number of ride
given that x=7
substituting we have
y=2.25(7)+6.5
y=15.75+6.5
y=22.25
In all Lupe we have to pay $22.25
Using a Table to Multiply Multivariable Polynomials What is the product of 6x – y and 2x – y + 2? 8x2 – 4xy + 12x + y2 – 2y 12x2 – 8xy + 12x + y2 – 2y 8x2 + 4xy + 4x + y2 – 2y 12x2 + 8xy + 4x + y2 + 2y
Answer: B.
[tex]12x^{2}[/tex] [tex]-8xy + 12x + y^2 - 2y[/tex]
Step-by-step explanation:
i just took the assignment
A scale drawing of a playhouse is shown below. What is the total height of the actual playhouse?
A. 4 ft
B. 6 ft
C. 8 ft
D. 16 ft
Answer:
A
Step-by-step explanation: