hello :
2x+7y=1 ...(*)
y=4x−8...(**)
(4;8) means x= 4 and y= 8
put this values in (*) and(**) :
2(4)+7(8) =1 62=1 false
8=4(4)-8 8=8 true
so :(4;8) is not solution for this system.
Hugh sold 4 cars during a 5 hour shift, and later sold 12 cars sold during a 15 hour shift.
Determine whether these relationships are proportional. Explain your reasoning.
PLSSSS HELPPPP!!!
Answer:
Yes they are proportional because he is selling cars at the same rate
Step-by-step explanation:
if the area of the right angle to measure 308 square meters and solve an equation to find the value of y
Answer:
y = 14
Step-by-step explanation:
Area of rectangle = 308 m²
Length = (6y - 7) m
Width = 4 m
Area of rectangle = length × width
Plug in the values
308 = (6y - 7) × 4
308 = 6y×4 - 7×4
308 = 24y - 28
Add 28 to both sides
308 + 28 = 24y
336 = 24y
Divide both sides by 24
14 = y
y = 14
O GRAPHS AND FUNCTIONS
Determining if graphs have symmetry with respect to the x-axis...
For each graph, select all symmetries that apply.
(b)
(c)
2
at
-2
Symmetry:
Symmetry:
Symmetry:
x-axis
X-axis
x-axis
Ov-axis
y-axis
y-axis
origin
origin
origin
none of these
none of these
none of these
5
2
Will give brainliest... please help :)))!!! The time it takes to fly from Los Angeles to New York varies inversely as the speed of the plane. If the trip takes 5 hours at 950 km/h, how long would it take at 850 km/h?
What is the value of |-3.25|
Answer:
3.25
Step-by-step explanation:
thats how absolute value works
The length of a jogging trail is 3528 m. A jogger wants to complete the trail within 30 min. How many meters must the jogger travel each minute?
Step-by-step explanation:
We have to find the distance the jogger must travel each minute. The distance covered in one minute is:
d= 3528/1800= 1.96 m
Therefore, the distance covered in one minute, or 60 seconds is:
dt= 1.96 × 60 = 117.6 m
The solution needed is, dt=588/5 = 117 (3/5) m
Which expression has a value of 3?
OA) 45+5+ 22.4
OB) 45-(5+22). 14
OC) 45=5+(22-)
OD) 45+ (5 + 2?) - V4
Evaluate the expression for the given values of the variables.
a2-b for a = 9 and b = 5
When a = 9 and b = 5, the expression is equal to
Fasstttt
Answer:
76
Step-by-step explanation:
Answer:
a²-b
(9)²-(5)
81-5
76
therefor, your answer is 76
CAN YOU PLZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ HELP
The perimeter of a rectangle is 54 inches. Its length is 22 inches. Write and solve an equation to determine its width?
2 times the width + 2 times the length = perimeter
Answer:
5 is the width.
Step-by-step explanation:
Answer Check:
22 + 22= 44
5 + 5 = 10
44 + 10 = 54
Here is a list of numbers 2 17 1 13 7 18 14 18 20 state the median
Answer:
14
Step-by-step explanation:
median is the number in the very middle when the numbers are organized in order:
1, 2, 7, 13, 14, 17, 18, 18, 20
if we start taking away from both ends we’ll get the answer
2, 7, 13, 14, 17, 18, 18
7, 13, 14, 17, 18
13, 14, 17
14
Median is 14.
What is median?Median is a statistical measure that determines the middle value of a dataset listed in ascending order (i.e., from smallest to largest value). The measure divides the lower half from the higher half of the dataset. Along with mean and mode, median is a measure of central tendency.
Given
List of numbers 2, 17, 1, 13, 7, 18, 14, 18, 20
Sort from smallest to largest number
1, 2, 7, 13, 14, 17, 18, 18, 20
Median is a statistical measure that determines the middle value of a dataset listed in ascending order (i.e., from smallest to largest value).
The middle value of the dataset is 14.
So, the median is 14.
Find out more information about median here
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What is the LCM of 56 and 54
Answer:
1512
LCM = 2 × 2 × 2 × 3 × 3 × 3 × 7
= 1512
The next two terms of the sequence 4,7,10,13 are...and ----
A certain factory produces and sells x kilograms of ice cream per month. It cost c dollars to produce one kilogram of ice cream, which is then sold for 0.16 dollars. The factory's monthly net profit is P dollars. Write an equation that relates x,c and P
Answer:
P=0.16x-c
............
Answer:
Khan Academy x(0.16-c)=P
Step-by-step explanation:
Please help me it’s due today at 3:00pm please help me will mark brainiest please help me
Answer:
40 miles
Step-by-step explanation:
15 + 0.50m = 25 + 0.25m
0.50m = 10 + 0.25m
0.25m = 10
m = 40
What is the area of a rectangle with vertices (-8, -2), (-3,-2),(-3,-6), and (-8,-6) sq units?
Answer:
20 square units
Step-by-step explanation:
If you were to graph the four points(creating a table on desmos is a good option) you would find that one side is 4 units long and the other is 5 units long. You multiply 4 times 5 to get that the area is 20 units squared. :)
Answer:
20 units²
Step-by-step explanation:
A = 4 × 5 = 20 units²
Is it just me or are any of you guys trying to find the answer to your question and it shows "theres no results" but you know there is? then when you go to ask it, it shows you the answers and its quite annoying
Answer:
YESS!
Step-by-step explanation:
Morgan is going to a carnival that has games and rides. Each game costs $2.50 and each ride costs $4.25. How much would Morgan have to pay if she wanted to play 5 games and go on 2 rides? How much would Morgan have to pay if she wanted to play xx games and go on yy rides?
Answer:
5 games and 2 rides: 21
x games and y rides: 2.50x+4.25y
Step-by-step explanation:
Write the number from least to greatest
There are 24 fluid ounces in 3 cups how many cups are equal to 144 fluid ounces?
Answer:
18 cups
Step-by-step explanation:
Answer:
18 cups
Step-by-step explanation:
24/3 = 8
144/8 = 18 cups
cómo representar números decimales terminales (finitos) como fracciones y números decimales periódicos no terminales (infinitos) como fracciones.
Answer:
Step-by-step explanation: how to represent terminal (finite) decimal numbers as fractions and nonterminal (infinite) repeating decimal numbers as fractions. for any one wondering what it is in english
What is the slope-intercept form of the equation of the line through the given point and slope?
through: (2,-2), slope = -3
Answer:
b = 4
Step-by-step explanation:
Remember y = mx+b (m = slope, b = y intercept.)
We have the slope, so, no need to solve for that.
To find the y intercept, plug in the ordered pairs to y=mx+b
-2=-3(2)+b
-2=-6+b multiply like terms
4 = b Add 6 on both sides
b = 4.
Sam and Carlos are bowling with plastic pins in Sam's living room.
Remarkably, Sam knocks down 8 pins on every bowl, and Carlos knocks down 9 pins on every bowl. At the end of the day, Sam and Carlos have knocked down the same total number of pins.
What is the least number of total pins that Sam and Carlos could have each knocked down?
A number divided by 3 is at least 15. what is the inequality. Will Give BrainLiest
Answer:
I believe that it is 45 but I'm not 100% sure.
Step-by-step explanation:
The width of a piece of paper is 8.5in the length is 11in and the thickness is 0.0037inches there are 2700sheets sitting in a cabinet by the copy machine what is the volume of occupied by the paper.
Answer:
934.2 in³
Step-by-step explanation:
The following data were obtained from the question:
Width (W) = 8.5 in
Length (L) = 11 in
Thickness (T) = 0.0037 in
Number of paper = 2700 sheets
Volume occupied by the 2700 sheets of paper =?
Next, we shall determine the volume of 1 sheet of paper. This can be obtained as follow:
Width (W) = 8.5 in
Length (L) = 11 in
Thickness (T) = 0.0037 in
Volume (V) =?
Volume = Length × Width × Thickness
Volume = 11 × 8.5 × 0.0037
Volume = 0.346 in³
Thus, the volume of 1 sheet of paper is 0.346 in³
Finally, we shall determine the volume occupied by the 2700 sheets of paper as follow:
Volume of 1 sheet of paper = 0.346 in³
Volume of 2700 sheets of paper =?
1 sheet of paper occupied 0.346 in³.
Therefore, 2700 sheets of paper will occupy = 0.346 × 2700 = 934.2 in³
Thus, the volume occupied by the 2700 sheets of paper is 934.2 in³.
Solve: |2x − 1| < 11. Edge 2020. Thanks!
Answer: -5 < x < 6. (-5, 6)
Step-by-step explanation:
A line intersects the points (0,-4) and (1,2). What is the slope-intercept equation for this line
Answer:
y = -2x
Step-by-step explanation:
First you can find the difference between the two points to find the slope.
0, 4
- 1, 2
-1, 2
Now divide: y/x = 2/-1 = -2
Slope = -2
Formula: y=mx+b
Plug in the points for the variables.
2 = -2(1) + b
2 = -2 + b
Subtract 2 from both sides to get 0 = b so this line is proportional.
Hope that helps and have a great day!
Mr. Smith is draining his pool to have it cleaned. At 8:00 A.M., it had 2000 gallons of water and at 11:00 A.M. it had 500 gallons left to drain. What is the rate of change in the amount of water in the pool?
Answer:
500 gallons per hour
Step-by-step explanation:
rate =2000-500 gallons/ 3hours
=1500 gallons/3 hours
=500gallons per hor
Using mathematical operations, we know that the rate of change is 500 gallons of water per hour.
What are mathematical operations?The rules that specify the order in which we should solve an expression involving many operations are known as the order of operations. PEMDAS stands for Parentheses, Exponents, Multiplication, Division, Addition, and Subtraction (from left to right). An operation is a function in mathematics that transforms zero or more input values into a clearly defined output value. The operation's arity is determined by the number of operands.So, the rate of change:
Hours passed is 3. (11 - 8 = 3)The water decreased after 3 hours is 1500. (2000 - 500 = 1500)Now, calculate as follows:
Rate of change = 2000 - 500/3Rate of change = 1500/3Rate of change = 500 per hourTherefore, using mathematical operations, we know that the rate of change is 500 gallons of water per hour.
Know more about mathematical operations here:
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The equation of a line given two points needs to be found. Samuel claims that slope-intercept form will generate the equation and Helena claims that point-slope form will find the equation. Who is correct? Explain your reason by describing both forms.
pls give an answer
Answer:
helana
Step-by-step explanation:
pls brainleist to feed my kidz
Answer:
Sample response:
Both are correct. Using either form will result in the same equation. The slope-intercept form uses slope and a point to find the y-intercept. Point-slope form uses the slope and a point to solve for y to generate the equation.
Step-by-step explanation:
when we divide both sides inequality by a negative number, we should reverse
the symbol of the inequality
A True
B) False
Answer:
True
Step-by-step explanation:
When dividing both sides by a negative number, you reverse the inequality sign.
Answer:
(A) True!
Step-by-step explanation:
Just remember to multiply or divide both sides by the same quantity, then simplify! Remember, when multiplying or dividing by a negative YOU MUST FLIP THE INEQUALITY SIGN.
ex:
x−15≤−2 Solve for x.
Write 75% as a rate per 100
Answer:
75/100 = 3/4
Step-by-step explanation:
75% in rate form is: 75/100, which can be also given in reduced fraction form by simplifying two factors "5" : 75/100 = 3/4