Answer:
Therefore, x = 1 and y = -1 .
Step-by-step explanation:
The steps are :
[tex]4x - 5y = 9 - - - (1)[/tex]
[tex] - 6x + 5y = - 11 - - - (2)[/tex]
[tex](1) + (2)[/tex]
[tex]4x + ( - 6x) = 9 + ( - 11)[/tex]
[tex] - 2x = - 2[/tex]
[tex]x = 1[/tex]
[tex]sub \: x = 1 \: into \: (2)[/tex]
[tex](2)⇒[/tex]
[tex] - 6(1) + 5y = - 11[/tex]
[tex] - 6 + 5y = - 11[/tex]
[tex]5y = - 11 + 6[/tex]
[tex]5y = -5[/tex]
[tex]y = -1 [/tex]
Answer:
I hope it work
Step-by-step explanation:
4x-5y=9 -6x+5y=-11adding both the equations
4x-5y=9
-6x+5y=-11
-2x+0y=-2
-2x=-2
Now divide both sides by -2
-2/-2 x= -2/-2
x=1Now putt the value of x in one of above equation to get value of y4(1)-5y=9now solve this-5y=9-4-5y=5divide -5 to both sidesy= -1These are he required value of x and yplease Brain-list the answer if u like it thanks...Find the values of the numbers below. Type the answers in the boxes below.
∣∣1114∣∣ =
Answer:
-1114
Step-by-step explanation:
the lines are absolute value of the number on the inside
so the first 2 lines would equal 1114
but since there are 2 more lines its the opposite of 1114 which is -1114.
Hope this helps
Have a amazing day!
I need help plz respond fast!
Answer:
i believe the answer would be none of the above
An architect plans to build an extension for a rectangular bedroom. The bedroom is 5 meters wide, and the original length of the bedroom is 8 meters. The length of the bedroom's extension, in meters, is represented by x. The expression 5(x + 8) represents the area, in square meters, of the bedroom
(Answer the two questions below)
Part A: Create an equivalent expression without parantheses.
Part B: What does each term of your expression represent?
Part A. The equivalent expression for the area of the rectangle without parenthesis is 5x + 40 sq meters and
Part B. The term represents that the area has been increased by 5 times the amount of the extension.
What are the area and perimeter of a rectangle?We know the perimeter of any 2D figure is the sum of the lengths of all the sides except the circle and the area of a rectangle is the product of its length and width.
We know the area of a rectangle is (length×width).
So, The area of the rectangle before the length extension is,
= (5×8) sq meters.
= 40 sq meters.
Now, The length is extended by 'x' meters.
Therefore, The area of the rectangle after an extension in length is,
= 5(x + 8) sq meters.
= 5x + 40 sq meters.
The expression's phrase indicates that the area has grown by five times as much as the extension.
learn more about rectangles here :
https://brainly.com/question/29123947
#SPJ2
Which of these is the longest time?? A)15000 seconds B) 1500 minutes C) 10 hours D) 1Day
Answer:
A)15000 seconds
Step-by-step explanation:
The amount of time that a customer spends waiting at an airport check-in counter is a random variable with mean 8.2 minutes and standard deviation 1.5 minutes. Suppose that a random sample of n = 49 customers is observed. Find the probability that the average time waiting in line for these customers is A) Less than 10 minutes B) Between 5 and 10 minutes C) Less than 6 minutes
Answer:
A) 1
B) 1
C) 0
Step-by-step explanation:
The amount of time that a customer spends waiting at an airport check-in counter is a random variable with mean 8.2 minutes and standard deviation 1.5 minutes. Suppose that a random sample of n = 49 customers is observed. Find the probability that the average time waiting in line for these customers is A) Less than 10 minutes B) Between 5 and 10 minutes C) Less than 6 minutes
We solve this question using the z score formula
z = (x-μ)/σ/√n, where
x is the raw score
μ is the population mean
σ is the population standard deviation.
n = number of random samples
A) Less than 10 minutes
x < 10
z = 10 - 8.2/ 1.5 / √49
z = 8.4
P-value from Z-Table:
P(x<10) = 1
B) Between 5 and 10 minutes
For x = 5 minutes
z = 5 - 8.2/ 1.5 / √49
z = -14.93333
P-value from Z-Table:
P(x = 5) = 0
For x = 10 minutes
z = 10 - 8.2/ 1.5 / √49
z = 8.4
P-value from Z-Table:
P(x = 10) = 1
The probability that the average time waiting in line for these customers is between 5 and 10 minutes
P(x = 10) - P(x = 5)
= 1 - 0
= 1
C) Less than 6 minutes
x < 6
z = 6 - 8.2/ 1.5 / √49
z = -10.26667
P-value from Z-Table:
P(x<6) = 0
solve for step by step 5x-2=23
i’ll give brainliest for this one question to be explained throughly.
brad made a graph showing how many students were absent from school every day last week.
use the graph to answer the questions.
4. Is the relation represented by the graph a function? Why or why not?
Answer:
The relation represented by the graph is not a function
Step-by-step explanation:
A function by definition is "a relation from a set of inputs to a set of outputs". For this graph there's no constant rate of change, you can't form a line with the points, and you can't write an equation or inequality from the points. There's no sort of relationship between the number of days and the number of students who are absent, so it's not a function.
Answer:
1. 1,7 2,10 3,5 4,7 5,9
2. 5
3. 2 10 Students were absent on day 2.
4.The graph is a function because each x-value is paired with a single y-value.
If gas costs $3.49 per gallon, how many whole gallons of gas could you buy with $65.00? (Make sure to answer with a whole number.)
Answer:
18 gallons
Step-by-step explanation:
Answer:
18 gallons
Step-by-step explanation:
Plot and connect the points A (2,-2), B(-4,-4), C (-4,-1), D (-2,3), E (1,3), F (2,5), and find the length of BC.
4 units
3 units
5 units
2 units
ASAP I NEED ASAP
Answer: 3 units
Step-by-step explanation B is 3 units away from C
simple
can someone please help me with this i don’t understand:(
Answer:
domain = neg infinity, infinity
range = neg infinity, infinity
Step-by-step explanation:
domain is asking x values which the graph will pass through. since the line is continuous, it touches EVERY x value, same with range and y values.
Joey bought a dozen oranges for $3.50 and several bananas for $0.25 each at the grocery store. Joey spent a total of $5.75 on the fruit. Which number line best represents the number of bananas Joey purchased?
Answer:
where's the number line?
Answer:
B.
Step-by-step explanation:
Identify the slope given the points (-4.7) and (10,14). * 0 -1/2 O 2 O 1/2 O - 2
Answer:
[tex]\displaystyle m=\frac{1}{2}[/tex]
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightAlgebra I
Slope Formula: [tex]\displaystyle m=\frac{y_2-y_1}{x_2-x_1}[/tex]Step-by-step explanation:
Step 1: Define
Point (-4, 7)
Point (10, 14)
Step 2: Find slope m
Simply plug in the 2 coordinates into the slope formula to find slope m
Substitute in points [SF]: [tex]\displaystyle m=\frac{14-7}{10+4}[/tex][Fraction] Subtract/Add: [tex]\displaystyle m=\frac{7}{14}[/tex][Fraction] Divide: [tex]\displaystyle m=\frac{1}{2}[/tex]PLEASE I NEED HELP ON THIS
Answer:
do 3.14 x 6
Step-by-step explanation:
Answer:
37.69911
Step-by-step explanation:
"the internet does not lie"-- home
Simplify each expression and match it with the equivalent value.
Answer:
D, E, C, A
Step-by-step explanation:
Labelling the 5 top values as A, B, C, D, E
What's the a answer to this
Answer:
if you take 180-124 you would get 56 then you would take 56 divided by 2x which would give you 28
Step-by-step explanation:
Answer:
Step-by-step explanation:
4) ∠ELD + m∠ELG = 180 linear pair
5) 2x + 124 = 180 Substitution
6) 2x +124 -124 = 180 -124 Subtraction property
2x = 56
7) 2x/2 = 56/2 Division property
x = 28
Jackets cost $15 and a set of decorative buttons cost $5. The delivery fee is $5 per order. The expression 15n+5n+5 gives the cost, in dollars, of buying jackets with buttons for n people. Write this expression after combining like terms. *
Answer: 20n + 5
Step-by-step explanation:
From the question, we are told that jackets cost $15 and a set of decorative buttons cost $5 and that the delivery fee is $5 per order.
The expression 15n+5n+5 gives the cost, of buying jackets with buttons for n people. The expression after combining like terms would be:
= 15n + 5n + 5
= 20n + 5
Super Easy!!!!! im just not smart lol.
If you put $6.24 into a savings account that earns 5%, how much money will you have in the bank at the end of four years? Please show step by step
Answer:
$7.488 or $7.49 (rounded)
Step-by-step explanation:
In order to find the amount of money at the end of 4 years, you have the find the amount of money after one year. So, the first step is to multiply 6.24 by .05 to get the percent gained in one year. This is .312. Then, you multiply the amount from the first year by four, for the other years, and get 1.248. That is how much you will earn in four years. Now, to get the total of all the money in the bank account after four years, you add 1.248 to 6.24. This sums up to 7.488 which is your answer. Hope this helps :)
Evaluate x−y if x=−5 1/4 and y=−6.8 . Write your answer in simplest form.
The answer i got is -1.55, im not sure though
The value of the given algebric expression is x - y when x=−5 1/4 and y=−6.8 will be 2.05.
What is an expression?A mixture of variables, numbers, addition, subtraction, multiplication, and division are called expressions.
An expression is a mathematical proof of the equality of two mathematical expressions.
As per the given expression, x - y
x = - 5 1/4 = (-5 x 4 + 1)/4 = -19/4 = -4.75
y = -6.8
Substitute x and y into the above expression,
-4.75 - (-6.8) = 2.05
Hence "The value of the given algebric expression is x - y when x=−5 1/4 and y=−6.8 will be 2.05".
To learn more about expression,
https://brainly.com/question/14083225
#SPJ2
Why is the percent increase from 45 to 75 not equal to the percent decrease from 75 to 45? Select three options.
Answer:
2. The ratio of the percent increase is not the same as the percent decrease.
3. The ratio for the percent increase has a smaller denominator than the percent decrease.
5. The original amount for the percent increase is different from the original amount for the percent decrease.
Step-by-step explanation:
Kate used 2/5 of a pound of sugar to bake cookies. She used another 3/4 of a pound of flour for the cookies. How many pounds of sugar and flour did she use in all?
0.53333333333 is your answer, this is a decimal just put the decimal into a fraction
1. A 2.5 pound bag of apples cost $2.99. Calculate the unit rate showing pounds of apples per dollar and the unit rate showing dollars per pound of apples.
2.An 8 pound bag of oranges costs $4.95. Calculate the unit rate showing pounds of oranges per dollars and the unit rate showing dollars per pound of oranges.
3. A box of 40 envelopes costs $2.50. Calculate the unit rate showing number of envelopes per dollar and the unit rate showing dollars per envelope.
Answer:
um can u put up the question plz so i can answer your question
a car start from rest and accelerates at the rate of 2m/s² for 5 seconds. it maintenance this velocity for another 5 seconds. it eventually undergoes a uniform deceleration and finally comes to rest after further 5 seconds.
A) draw the velocity-time graph for the journey
B) find the acceleration and deceleration respectively,
C) find the total distance travelled during each stage.
D) find the average velocity over the entire period
Answer:
2m/s² ; - 2m/s²
25m ; 50m ; 25m
6.67 m/s²
Step-by-step explanation:
The acceleration and deceleration :
Both rates are the Same from the graph ;
According to scenario described, acceleration = 2m/s²
Deceleration occurred in equal time interval = - 2m/s
Distance covered during each stage:
Stage 1 : area of triangle
0.5 * base * height
0.5 * 5 * 10 =25 m
Stage 2: area of rectangle :
Length * breadth = 5 * 10 = 50 m
Stage 3 : area of triangle
0.5 * base * height
0.5 * 5 * 10 =25 m
Average Velocity :
Total distance / time = (25 + 50 + 25) / 15 = 100/ 15 = 6. 67 m/s
Please help on 4 5 and 6 both parts. Due in 30 min
3. What is the solution of the following
addition equation?
t+8= 32
A. =4
B. = 24
C. r=40
D. 1 = 256
Please help
Answer:
(B) 24 I believe is the answer
Evaluate 5^−4. Write your answer as a fraction in simplest form.
Can you please help me on this?
Answer:
Step-by-step explanation:
5^-4 remember that a^-b=1/a^b
5^-4=1/5^4=1/625
Find x so that QS ‖ PT. PQ = 15, QR = 3, RS = 8, ST = x – 3
Answer:
x=12
Step-by-step explanation:
oPQ= 15 and ST= x-3 and segment PQ and segment ST are congrunt so 15-3=12 and that makes x 12
Round to the nearest tenth
Answer: 35.7
Step-by-step explanation: 16.8/2 = 8.4
12.6/2 = 6.3
21.5 + 8.4 + 6.3 = 35.7
Select the true statement
solution: (0,0)
no solution
infinitely many solutions
Answer:
Infinitely many solutions
Step-by-step explanation:
Write 49 cm² in mm^2?
Answer:
[tex]4900 {mm}^{2} [/tex]
Step-by-step explanation:
[tex]1 cm = 10mm \\ 1cm \times 1cm = 10mm \times 10mm \\ 1 {cm}^{2} = 100 {mm}^{2} \\ 49 {cm}^{2} = 49 \times 100 \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 4900 {mm}^{2} [/tex]
You might need: Calculator
The following data points represent the volume of gas in each race car driver's tank (in liters).
4, 5, 13, ?
If the mean of the data set is 7 L. find the missing volume of gas.
L
Show Calculator
Stuck? Watch a video or use a hint.
Report roben
Answer:
The missing value is 6!
Step-by-Step Explanation:
First, we know that there are 4 values in total, so we must multiply the mean, 7, by 4 to get the total sum of all the values. (7*4=28)
Now, we can write this as a function, where we can represent the missing value as 'x'.
[tex]4+5+13+x=28[/tex]
In order to get the missing value, we must solve the equation.
Step 1: Simplify.
[tex]4+5+13+x=28\\22+x=28[/tex]
Step 2: Subtract 22 from both sides.
[tex]22+x=28\\22+x-22=28-22\\x=6[/tex]
x is equal to 6, which means the missing volume of gas is 6!
