Answer:
Lashawn used 15, $0.50 stamps, 21, $0.35 stamps, and 8, $0.02 stamps to mail the package
Step-by-step explanation:
The given parameters are;
The number of stamps Lashawn used to mail the small package = 44
The price of the combination of 44 stamp = $15.01
The price categories of the stamps are $0.50, $0.35, and $0.02
The number of $0.35 stamps = 2 × The number of $0.50 stamps - 9
Let, x represent the number of $0.50 stamps Lashawn used to mail the package
We have;
The number of $0.50 stamps Lashawn used to mail the package = x
The number of $0.35 stamps = 2 × x - 9 = 2·x - 9
The number of $0.35 stamps = 2·x - 9
The number of $0.02 stamps = 44 - x - (2·x - 9) = 44 - x - 2·x + 9 = 53 - 3·x
The number of $0.02 stamps = 53 - 3·x
Which gives;
0.5 × x + 0.35 × (2·x - 9) + 0.02 × (53 - 3·x) = 15.01
0.5·x + 0.7·x - 3.15 + 1.06 - 0.06·x = 15.01
1.14·x - 2.09 = 15.01
1.14·x = 15.01 + 2.09 = 17.1
x = 17.1/1.14 = 15
x = 15
The number of $0.50 stamps Lashawn used to mail the package = x = 15 stamps
The number of $0.50 stamps Lashawn used = 15 stamps
The number of $0.35 stamps Lashawn used = 2·x - 9 = 2 × 15 - 9 = 21 stamps
The number of $0.02 stamps Lashawn used = 53 - 3·x = 53 - 3 × 15 = 8 stamps.
A number divided by three less two is at most two
Answer:
6
Step-by-step explanation:
6/3 = 2
A Sub
sentence.
DVD Deals
Anthony and Miguel go to the store to purchase some new DVDs. An
advertisement in the window catches their attention.
DVD
T
Deals!
3 for $22,50
5 for $37.50
응
.
Part A (2 points)
Does the information on the sign represent a proportional relationship?
Explain how you know.
6
Answer: Yes. There's a proportional relationship
Step-by-step explanation:
We are told that Anthony and Miguel go to the store to purchase some new DVDs and that an advertisement in the window catches their attention as they saw that:
3 DVDs cost $22,50. This means the price of one will be:
= $22.50 / 3
= $7.50
5 DVDs cost $37.50. This means that the price for one will be:
= $37.50 / 5
= $7.50
Since the price of a DVD both cost $7.50, it means that the information on the sign represent a proportional relationship.
How do I solve 6a + 5a = −11
Answer:
a = - 1
Step-by-step explanation:
Step 1:
6a + 5a = - 11 Equation
Step 2:
11a = - 11 Combine Like Terms
Step 3:
a = - 11 ÷ 11 Divide
Answer:
a = - 1
Hope This Helps :)
The solution to the equation 6a + 5a = -11 is a = -1.
We have,
To solve the equation 6a + 5a = -11, we can combine the like terms on the left side of the equation and then isolate the variable a.
Step 1: Combine like terms
On the left side, we have 6a + 5a, which gives us 11a. The equation becomes:
11a = -11
Step 2: Isolate the variable
To isolate variable a, we divide both sides of the equation by 11:
(11a) / 11 = (-11) / 11
a = -1
Therefore,
The solution to the equation 6a + 5a = -11 is a = -1.
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HELPPPPPPPPPP!
The function y = 6x describes the distance in inches an electric toy train covers after x seconds. Use the graph to estimate how many inches the toy train will run in 8.4 seconds.
Simplify -4b + (-9k) - 6 - 3b + 12
Answer:
-7b - 9k + 6
General Formulas and Concepts:
Alg I
Combining like termsStep-by-step explanation:
Step 1: Define expression
-4b + (-9k) - 6 - 3b + 12
Step 2: Simplify
Rewrite: -4b - 9k - 6 - 3b + 12Combine like terms (b): -7b - 9k - 6 + 12Combine like terms: -7b - 9k + 6The ratio of cars to trucks is 3 to 2 in one parking lot
If there are 14 trucks, how many cars are there?
(I need help on that question)
Answer:
21
Step-by-step explanation:
[tex]\frac{x}{14} =\frac{3}{2} \\x=\frac{3}{2} \times 14=21[/tex]
Answer:21 cars to 14 trucks
Step-by-step explanation:
Solve using substitution.
11x + 15
10x + 20
X=
Solve please
hi
11x+15=10x+20
11x-10x= 20-15
x= 5
How to solve 9(-4k+8b) b=-9 k=4
Answer:
504
Step-by-step explanation:
I hope this helps you out!
Selina walked 2 1/2 miles in 2/3 hour. Dennis 6 3/4 miles in 1 1/2 hours. Who walked faster and how much faster?
Answer:
Dennis walked faster by 0.75 miles/hr
Step-by-step explanation:
a)Selina's speed
speed= distance
time
= 2.5 miles = 3.75 miles/hr = the slower
2/3 hrs
b) Dennis' speed
speed = distance
time
= 6.75 miles = 4.5 miles/hr = the faster
1.5 hrs
difference in speed:
faster - slower
4.5 - 3.75
=0.75 miles/hr
Dennis walked 0.75 miles per hour faster than Selina's speed.
What is Average speed?Average speed is defined as the ratio of the total distance traveled by a body to the total time taken for the body to reach its destination.
To determine Selina's speed
speed = distance/time
speed = 2.5 miles/(2/3) hour
speed = 3.75 miles/hour
To determine Dennis' speed
speed = distance/time
speed = 6.75 miles/(1.5) hour
speed = 4.5 miles/hour
Here Dennis' speed is greater than Selina's speed which means Dennis walked faster.
So the difference in speed = Dennis' speed - Selina's speed
The difference in speed = 4.5 miles/hour - 3.75 miles/hour
The difference in speed = 0.75 miles/hr
Thus, Dennis walked 0.75 miles per hour faster than Selina's speed.
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PLEASE HELP HURRY
4+ 3x + 12 - 1/2x - 10
1. HOW MANY TERMS?
2. WHAT ARE THE LIKE TERMS?
Answer:
5 like terms
4, -10, and 12 are like terms
3x and -1/2x are like terms
The sum of two numbers is 22, and their difference is 12. What are the numbers?
Answer:
17,5
Step-by-step explanation:
What is the slope of the line?
Answer:
The slope is: -4/3
Step-by-step explanation:
HELP PLEASE !!!!!!!!!
Answer:
I believe it would be the first option
WILL GIVE BRAINLIEST!!!!!!
Answer:
17.738
Step-by-step explanation:
to find x we’ll use sine
sin69=x/19
(remember that sine = opposite/hypotenuse)
so x = 19sin69
when typing this in your calculator you might need to change from radian to degree mode
I WILL GIVE YOU A LOT OF POINTS 10 PLUS A BRAINLIEST.
USE THE ABSOLUTE VALUE TO FIND THE DISTANCE BETWEEN THE GIVEN PAIRS OF NUMBERS ON A NUMBER LINE NUMBERS A. 156 AND 235 B. -40 AND 83 C. -62 AND -145 D. 56 AND - 89
Answer:
A. 79
B. 123
C. 63
D. 145
Step-by-step explanation:
A. 156 & 235
235 - 156 = 79
Distance is 79
B. -40 & 83
|-40| = 40 + 83
= 123
Distance is 123
C. -62 & -145
|-125| - |-62|
= 125 - 62
= 63
Distance is 63
D. 56 & -89
|-89| = 89 + 56
= 145
Distance is 145
Answer:
A. 79
B. 123
C. 63
D. 145
Step-by-step explanation:
i need help it's 10th grade (sophomore) geometry
Answer:
1. 27
2. 1 and 2 = 17
3. 55
4. 55
5. 70
6. 125
7. 55
8. 95
9. 140
10. 40
11. 65
12. 75
13. 115
14. 27
15. 27
Step-by-step explanation:
Bob is having a cookout. He bought 6 liters of seltzer water. How many full 1-pint servings of seltzer can he pour?
(1 L = 2.11 pt)
a. 6
c. 18
b. 12
d. 21
Answer:
B
Step-by-step explanation:
6 x 2.11 = 12.66
The value of a 1-pint serving of shelter will be 12.66 liters. The correct option is b.
What is an expression?The mathematical expression combines numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.
Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also represent the logical syntax's operation order and other properties.
Given that Bob is having a cookout. He bought 6 litres of seltzer water. The quantity of water for 1 point of serving is,
Quantity = 6 x 2.11
Quantity = 12.66
The quantity will be equal to 12.66 pints.
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-0+2
Ezzzzzzzzzzzzzzzzzzzzzzzz
A passenger on a stranded lifeboat shoots two distress flares into the air. The first flare travels a maximum height 196 feet and lands in the water after 7 seconds. The height (feet) of the second flare above the water is given by f(t) = -16t(t-8), where t is time (seconds) since the flare was shot. Which flare travels higher? Which remains in the air longer?
Answer:
The second flare travels higher, 256 feet, and remains in the air longer, 8 seconds, than the first flare
Step-by-step explanation:
The given parameters are;
The height of the first flare = 196 feet
The duration the first flare spends in the air = 7 seconds
The function representing the height of the second flair is f(t) = -16t(t - 8)
Where;
t = The time since the passenger shot the second flare
The time the flair stays i the air is given by the time it takes for the height, f(t), to be 0 as follows;
f(t) = 0 = -16t(t - 8)
-16t(t - 8) = 0
t = 0, or t = 8
The time the second flare stays in the air = 8 seconds
The maximum height reached by the second flair is given by the finding the maximum point of the curve of the function as follows;
d(f(t))/dt = 0 = d(-16t(t - 8))/dt = -32t + 128 at the maximum point (the coefficient of t² is negative in the quadratic equation)
-32t + 128 = 0
128 = 32t
32t = 128
t = 128/32 = 4
t = 4 at maximum height and f(4) = -16 × 4 × (4 - 8) = 256 feet
The maximum height reached by the second flare f(4) = -16 × 4 × (4 - 8) = 256 feet.
Therefore, the second flare travels higher, 256 feet, and remains in the air longer, 8 seconds, than the first flare, with maximum height of 196 feet, and time in the air of 7 seconds.
Correct Answer Will get Brainliest
You can paint 75 square feet of a surface every 45 minutes. Determine how long it takes you to paint a wall with the given dimensions.
9 ft x 9 ft
Answer:48.6
we know that
You can paint 75 square feet of a surface every 45 minutes
so
using proportion
Find out how long it takes you to paint a surface area of 81 square feet
45(81)/75=48.6
hope this helped and I hope you get a correct answer :D
Answer:
48.6 minutes
Step-by-step explanation:
First we must identify the area of the given wall :
A = L * W
A = 9 * 9
81 = 9 * 9
[tex]81ft^2[/tex]
Now we know that we can paint 75 square feet every 45 minutes so we must use proportion to find out how long it'll take you.
[tex]\frac{75}{45} *\frac{ft^2}{min}[/tex]
=
[tex]\frac{81}{x}[/tex] [tex]\frac{ft^2}{min}[/tex]
x = 45(81) / 75
x = 3645 / 75
x = 48.6 minutes
What is $500= blank+ $600
Answer:
-100$
Step-by-step explanation:
Adding a negitive number to a positive number is basically subtracting it, and since 600-100 is 500 that means 600 + -100 is also 500.
I need to fine the midpoint of this slope they gave me
Answer:
The midpoint would be (-3, 1)
Step-by-step explanation:
since the formula for midpoint is [tex](\frac{x^{1} +x^{2} }{2}, \frac{y^{1} +y^{2} }{2} )[/tex], you would just have to plug in the coordinates given on the graph. I think your points are (-1, 4) and (-5, -2).
[tex](\frac{-1 -5}{2}, \frac{4-2}{2} )[/tex]
[tex](\frac{-6}{2}, \frac{2}{2} )[/tex]
If you simplify, then you should get (-3, 1)!
Nell made a pizza.She cut the pizza into fourths.Then she cut each fourth into four pieces.Nell and her friends ate 6 of the smaller pieces of the pizza. What fraction of the pizza did Nell and her friends NOT eat?
Answer:
5/8
Step-by-step explanation:
They ate 6/16 which the left is 10/16 is 5/8
question 8 pls help me please
Answer:
B
Step-by-step explanation:
A is Standard Intercept Form
B is Point Slope Form
The rest are used for other problems I'm unsure of
Which expression is equivalent to (x2+3x−5)− (4x2+3x−6)
PLEASE HURRY>>>>
A. 5x2+6x−11
B. −3x2+1
C. −3x2+1
D. −3x4+6x2+1
Answer:
B
Step-by-step explanation:
Given
x² + 3x - 5 - (4x² + 3x - 6) ← distribute parenthesis by - 1
= x² + 3x - 5 - 4x² - 3x + 6 ← collect like terms
= - 3x² + 1 → B
Graph the inequality 4.r - y< 8
Pleaseee help a girl out
Answer:
?
Step-by-step explanation:
Given the general identity tan X = , which equation relating the acute angles, A and C, of a right ∆ABC is true?
Answer:
A. tan A = sin A / sin C
Step-by-step explanation:
Answer:
tan A = sin A / sin C
Step-by-step explanation:
can someone help me please. thanks!
Is this for a test or something?
Whats the constant of proportinality?
Answer:
1.5
Step-by-step explanation:
3÷2= 1.5
6÷4=1.5
12÷8= 1.5
Which polygon has one set of parallel sides and at least one right angle? On a coordinate plane, a polygon has 1 set of parallel sides. On a coordinate plane, a polygon has 1 set of parallel sides. On a coordinate plane, a polygon has 1 set of parallel sides and 1 right angle. On a coordinate plane, a polygon has no parallel sides.
Answer:
the answer would be option C. I just took the quiz
Step-by-step explanation:
i took the test!!!!!