Responder:
$ 2.5 y $ 3
Explicación paso a paso:
Paso uno:
datos dados
Sea xey el costo por libra de chispas de chocolate y nueces, respectivamente
por lo tanto
2x + 5y = 20 ------ 1
y
8x + 3y = 29 ------ 2
resolviendo 1 y 2 simultáneamente tenemos
2x + 5y = 20 (multiplicar la ecuación por 4)
8x + 20y = 80 ------------- 3
restar eqn 2 de 3
8x + 20y = 80 ------------- 3
8x + 3y = 29 ----------------- 2
0 + 17 años = 51
divide ambos lados por 17
y = 51/17
y = 3
El costo de las nueces por libra = $ 3
poner y = 3 en 8x + 3y = 29 ------ 2
8x + 3 (3) = 29 ------ 2
8x + 9 = 29
8x = 29-9
8x = 20
divide ambos lados entre 8
x = 20/8
x = 2,5
El costo del chocolate por libra = $ 2.5
seven less than eight times a number is -12
Answer:
19/8
Step-by-step explanation:
8x-7=-12
8x=19
x=19/8
Answer:
8-7n=-12
Step-by-step explanation:
Perry connects a blue garden hose and a green garden hose to make one long hose. The blue hose is 10.5 feet. The green hose is 11.75 feet. How long is the combined hose? The combined hose is feet long.
Answer:
22.25 ft long
if you add 10.5 with 11.75 you'll get 22.25
A tour bus holds 40 people. It charges $7 per ticket. The function representing the total sales is f(x) = 7x, where x represents the number of tickets sold. What is the domain?
A) x = all real numbers
B) x = all non-negative integers 280 or belowx = all non-negative integers 40 or below
C) x < = 40
D)x = all non-negative integers 40 or below
Answer: The answer is D
Step-by-step explanation: Is can't be anything negative because you cant have negative people and the bus can hold 40 people. It can be > or equal to 40.
What is the area of the trapezoid?
Answer:
A=30
Step-by-step explanation:
A=a+b
------- x h
2
3+7
------- x 6
2
10/2=5
5 x 6 = 30
Part C Whose puppy weighed the most when the person got it? How much did it weigh?
Answer:
Olivia's puppy, it weighed 5 pounds.
Step-by-step explanation:
Answer:
Olivia's puppy and the amount of pounds the puppy gained is 5 pounds
Step-by-step explanation:
Using the equation y = 2x + 5, what would the input need to be for an output of -15?
Answer:
x = -10
Step-by-step explanation:
y = 2x + 5
-15 = 2x + 5
-20 = 2x
-10 = x
Answer:
-10
Step-by-step explanation:
y = -10
plz help me The temperature at noon was 22°. From 6 AM until noon, the temperature changed by an average of 5° per hour. What WAS the temperature at 6 AM?
Answer:
-8° OR 52°
Step-by-step explanation:
Remember 22.
Now, you'll need to take 12 PM and see how many hours it is from 6 AM to 12 PM noon: 6-7, 7-8, 8-9, 9-10, 10-11, 11-12. We have 6 hours from 6 AM to 12 PM.
The problem gives us the average number of degrees it changed: 5. Since it doesn't specify HOW it changed, there are 2 answers.
In order to find the number of degrees it changed, we have to take the hours times the amount given, or in this case, 6 x 5 which equals 30.
Now that we know the fluxation number, we can either add or subtract 30 from the degrees given at noon.
So, 22 - 30 = -8 AND 22 + 30 = 50.
I hope that helps! :)
The table below shows the amount paid for different numbers of items.
A 2-column table has 4 rows. The first column is labeled x with entries 1, 2, 3, 5. The second column is labeled y with entries 0.50, 1.00, 1.50, 2.50.
Determine if this relationship forms a direct variation. Verify your answer.
Answer:
Yes, it is a direct variation. If the ordered pairs form a direct variation, the rate of change is constant and the ratio of y over x is constant. The rate of change, or constant of variation, is 0.5.
Step-by-step explanation:
That's the sample, I put:
Yes, a direct variation is when the ratio of y/x is constant and the rate of change is constant. In this example, the rate of change is seen as .50.
Answer:
a reference to the rate of change
a reference to the ratio of y over x
the constant of variation as 0.5
Step-by-step explanation:
If three pounds of apples cost $5.25, how much will 10 pounds cost?
show work!!!!
please help
Answer:
10 pounds will cost $17.50
Step-by-step explanation:
(5.25 / 3) * 10 = x
1.75 * 10 = x
17.50 = x
Answer:
10 pounds of apples will cost $17.50.
Step-by-step explanation:
First, we need to find the unit rate.
$5.25/3 = $1.75
Now we need to multiply $1.75 by 10 pounds.
$1.75 × 10 = $17.50
Ng Order of Operations George has $15. He would like to know if he has enough money to see a movie ($9.00) and buy a pretzel ($2.65), a drink ($1.35), and two veggie cups ($1.74 each). George incorrectly used this numerical expression to decide if he had enough money. 15 - 9 + 2.65 + 1.35 + 2(1.74) Use the order of operations to simplify this expression.
Answer:
No, George does not have enough money to buy everything.
The correct expression is:
15 - 9 - 2.65 - 1.35 - 2(1.74)
Step-by-step explanation:
Given that:
Money present with George initially = $15
Money required to see the movie = $9
Money required to buy a pretzel = $2.65
Money required to buy a drink = $1.35
Money required to buy 2 veggie cups = $2(1.74)
To find:
Whether there is enough money with George to complete all the tasks.
Solution:
First of all, let us calculate all the money required and then we can subtract all the money from the initial amount to find whether there is enough money present with George.
If the result is in positive, there is enough money with George.
Total money required for all the activities = $9 + $2.65 + $1.35 + $2(1.74) = $16.48
Expression = $15 - $16.48 = -$1.48
The result is negative, therefore there is not enough money.
The correct expression is:
15 - 9 - 2.65 - 1.35 - 2(1.74)
Choose the correct answer
Answer: it should be d pretty sure
Step-by-step explanation:
Which real-world story is represented by the problem (-15.85) + 26.58? Check all that apply. (A) Chey returned a CD that cost $15.85 and bought a shirt for $26.58. The sum is the amount the store owes him. (B) Chey returned a jacket that cost $26.58 and bought a book for $15.85. The sum represents the amount the store owes him. (C) Chey bought a shirt that cost $26.58 and a CD that cost $15.85. The sum represents his change. (D) Chey has a gift card with a balance of $26.58 and bought a hat that cost $15.85. The sum is the balance on his gift card.
Answer:
(D) Chey has a gift card with a balance of $26.58 and bought a hat that cost $15.85. The sum is the balance on his gift card.
Step-by-step explanation:
Which real-world story is represented by the problem (-15.85) + 26.58?
Comparing the options given below,
The correct option is
(D) Chey has a gift card with a balance of $26.58 and bought a hat that cost $15.85. The sum is the balance on his gift card.
This is because, buy a hat that cost $15.85 = -15.85
He has a balance is $26.58 on his credit card.
Hence: $26.58 - $15.85
Hence, option D is correct
Answer:
B & D
Step-by-step explanation:
Which of the following are types of variations?
Direct
Inverse
Variable
Combined
Joint
Step-by-step explanation:
There are many different types of variations as follows:
1) Direct variations in which the relationship between two different variables is direct.
2) Inverse variations in which the relationship between two different variables is opposite.
3) Joint variations in which the relationship between one variable varies directly with the product of two or more variables.
4) Combined variations in which one variable is directly proportion to second variable but inversely proportion with third variables.
option 'A', 'B', 'D' , 'E' are correct.
Find the area of the square ABCD
Step-by-step explanation:
Area of Square ABCD = 10m * 10m = 100m².
Answer:
Area of Square ABCD = 10m * 10m = 100m².
Step-by-step explanation:
Hope this helped have an amazing day!
Mr Gutierrez and his brother wants to play video games they want to purchase a game console that costs 300 4 games and 2 controllers write an expression to represent this situation
Answer:
The correct expression for this would be:
4g + 2c = 300
Step-by-step explanation:
Since the console costs 300 for buying 4 games and 2 controllers, let's represent 4 games with 4g and 2 controllers with 2c.
This means 4g and 2c gives 300. Mathematical, this is written as
4g + 2c = 300
Brooke has scores of 84, 72, 90, 95, and 87 on her first five quizzes. After taking the sixth quiz, Brooke’s mean score increased.
Answer:
B: 90
d: 86
e: 92
Step-by-step explanation:
edg2020
The area of a square can be represented by the expression x10. Which monomial represents a side of the square? x2 x5 x20 x100
The side of the square is [tex]x^5[/tex].
Area of squarearea of a square = (side)² = a²,
Exponent properties[tex](a^m)^n = a^{m+n}[/tex][tex](\sqrt a)^n = a^{(-2+n)}[/tex]Given to usarea of a square = [tex]x^{10}[/tex]
Side of the SquareEquating it with the general formula of square
[tex]\rm {Area\ of\ square}={Area\ of\ square}[/tex]
[tex]x^{10} = a^2[/tex]
Taking square root on both sides,
[tex]\sqrt{x^{10}} = \sqrt{a^2}\\\\a=\sqrt{x^{10}}[/tex]
[tex]a = x^5[/tex]
Hence, the side of the square is [tex]x^5[/tex].
Learn more about the Area of square:
https://brainly.com/question/1658516
The monomial which represents a side of the square is; x⁵
Area of a square
The area of a square is a 2-dimensional quantity and can be evaluated by the formula;
Area = l².Hence, the length of the sides of the square is;
l = √A.According to the question, the given area is x¹⁰.
Therefore, the length of each side is;
l = √x¹⁰ = (x¹⁰)^1/2l = x⁵.Read more on area of a square;
https://brainly.com/question/16758129
Joey has won 3 out of the last 8 games of cards he has played with his brother. They play 16 more games, how many of those games does Joey expect to win?
Answer:
6 games
Step-by-step explanation:
Joey has won 3 out of the last 8 games of cards he has played with his brother. They play 16 more games, how many of those games does Joey expect to win?
8 games = 3 won
16 games = x
Cross Multiply
8x = 16 × 3
8x = 48
x = 48/8
x = 6
If they play 16 more games, Joey expects to win 6 games
Answer:
6 games
Step-by-step explanation:
2 x 8 = 16 so, if he won 3 out of 8 he will expect to win another 3 games.
Simplify: 8p²q²r² - 7p²q²r² + q²r²
Answer:
8p²q²r² - 7p²q²r² + q²r²
Step-by-step explanation:
The total cost for a dinner reception, , is a function of the number of people, , attending the event. The equation, , can be used to represent this situation. The catering company requires a minimum of 20 guests. Which inequalities represent the domain & range of this problem?
Answer:
1,800= 45 x ( x is the amount of weeks)
Step-by-step explanation:
с
6 yd
8 yd
What is the length of the hypotenuse?
C =
yards
Answer:
10 yds
Step-by-step explanation:
Pythagorean Theorem is [tex]A^{2} +B^{2} =C^{2}[/tex]
So, [tex]6^{2} +8^{2} =C^{2}[/tex]
[tex]36+64=C^{2}[/tex]
[tex]100=C^{2}[/tex]
C=10
please say the answer of this
3√5+√5
4√5
According to Brainly I need to have at least 20 characters before being able to 'Add My Answer'.
question;
3√5+√5
answer:
Decimal Form:
8.94427191
PLEASE HELP ME!!!!!!!!!!!!! I WILL GIVE BRAINLIEST
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answer:
{ x | x > 9 }
Write the equation in slope-intercept form. Do not use any spaces. Make sure your answer looks like y=mx+b. Y + 6 = 3(x - 4) *
Answer:
y = 3x+ 18
Step-by-step explanation:
Given the expression y + 6 = 3(x-4), we are to express in the form y = mx+b
Open the bracket
y + 6 = 3(x-4)
y+6 = 3x-12
Collect the like terms;
y - 3x = -12 - 6
y - 3x = 18
y = 3x + 18
Hence the required equation in slope-intercept form is y = 3x+ 18
Two trains leave the station at the same time, one traveling due east, the other due west. After 46 minutes, they are 140 miles apart. If one train's speed is 20 mph more than the other train's, what are the speeds of the two trains.
Train A speed = x + 20
Train B = x
We know that 46 minutes is 23/30 of an hour.
Use D = rt
Take it from here.
What are the coordinates of the point on the directed line segment from (−4,−10) to (10, -2) that partitions the segment into a ratio of 3 to 1?
Answer:
the ansmer : (-17/2 , 1)
Solve the system by substitution y=6x and 7x-8y=-41
Answer:
Y=6 and x=1
Step-by-step explanation:
y=6x
∴y-6x=0
and 7x-8y=-41
Suppose,
-6x+y=0→(1)
and 7x-8y=-41→(2)
Taking equation (1), we have
-6x+y=0
⇒y=6x→(3)
Putting y=6x in equation (2), we get
7x-8y=-41
7x-8(6x)=-41
⇒7x-48x=-41
⇒-41x=-41
⇒x=1→(4)
Now, Putting x=1 in equation (3), we get
y=6x
⇒y=6(1)
⇒y=6
∴y=6 and x=1
Find the least whole number N so that 2020 + N is exactly divisible by 11.
2020 + N ≡ 0 (mod 11)
N ≡ -2020 (mod 11)
Notice that 2020 = 183 • 11 + 7, so
N ≡ -(183 • 11 + 7) (mod 11)
N ≡ -7 (mod 11)
N ≡ 4 (mod 11)
[tex]N=4[/tex]
Step-by-step explanation:
Given :
Whole Number = N
Number = 2020 + N
Solution :
Now through observtion,
[tex]\dfrac{2020+N}{11}=184[/tex] ----- (1)
We took 184 because when we multiply 184 by 11 we get the nearest number to 2020
So from equation (1),
[tex]N=2024-2020[/tex]
[tex]N=4[/tex]
For more information, refer the link given below
https://brainly.com/question/21416852?referrer=searchResults
Can someone help? I’m not the best at algebra
8/3
also use math_way its helpful
without the "_"
Step-by-step explanation:
Answer:
D- 4/3
I already knew the answer, but I found this explanation on another website..
x^3=64/27
x = 3√(64/27)
x= 4/3
Have a nice day :D
Also, may I have Brainliest if someone else answers??
If 1/8 = 1ft and the wall is 56 ft wide how long would the wall be in inches?
Answer:
7
Step-by-step explanation: