Use any method to solve the following system of equations: Equation #1: 2y = x - 4 Equation #2: 4x + 3y = 5 *
(2, -1)
(-2, -1)
(2, 1)
(-2, 1)
help please!!
Answer:
Step-by-step explanation:
the answer is (2,1)
can someone tell me if these are functions or not..
Answer:
3. is a functions and 4 isnt
Step-by-step explanation:
NO LINKS PLEASE
EXPLANATION REQUIRED
I WILL GIVE BRAINLIEST
DONT MINF MY PRO CROPPING. DEFF.
ALSO ITS NOT C
Answer:
B is the correct answer
Step-by-step explanation:
Subtract area of triangle from total area: 30 - 14 = 16Since the figure is a square, all the sides are equal. Therefore, we need to find the square root of 16: √16 = 4All the sides of the square are 4 cm longTo check, reverse application:4 x 4 = 1616 + 14 = 30A rectangular deck is 9 meters long by 7 meters wide. What is the length someone would walk
if they started at a corner and walked diagonally to the other corner?
Answer:
11.4 metres
Step-by-step explanation:
Use Pythagoras theorem for a right-angled triangle
a^2 + b^2 = c^2
if you cut the rectangle in half, it will become a right angled triangle.
a and b are two sides of the rectangle, while c is the diagonal or hypothenuse
so 9^2 + 7^2 = c^2
81 + 49 = c^2
c^ 2 = 130
square root 130 = c
you should get approximately 11.4 metres
the ratio of sparrows to finches at the bird feeder is 3 to 4. If there were 12 sparrows, how many finches were there? explain
Answer:
16
Step-by-step explanation:
3 sparrows for every 4 finches
12 sparrows
12÷3= 4
4×4= 16
16 finches
find the angle y to the nearest degree:
cos y° = (7/19)
If anyone could also explain how, that would be great.
Answer:
y=68.38172757
Step-by-step explanation:
Take the inverse cosine of both sides of the equation to extract
y from inside the cosine.
y=arccos(7/19)
y=68.38172757
The cosine function is positive in the first and fourth quadrants. To find the second solution, subtract the reference angle from
360 to find the solution in the fourth quadrant. y=360−68.38172757
y=68.38172757+360n,291.61827242+360n, for any integer n
Simplify: (-7x - 5) - (-9x2 + 8x + 7). Choose the standard form of the answer.
Answer:
-15x - 12 + 9x^2
Step-by-step explanation:
(-7x - 5) - (-9x^2 + 8x + 7)
-7x - 5 + 9x^2 - 8x -7
-15x - 12 +9x^2
what is that 2 by the 9x
We will simplify the given expression to get:
9x^2 - 15x - 12
How to simplify the given expression?
Here we have the expression:
(-7x - 5) - (-9x^2 + 8x + 7)
To simplify it, we just perform the difference between the polynomials:
-7x - 5 + 9x^2 - 8x - 7
Now we group terms with correspondent powers of x:
9x^2 + (-7x - 8x) + (-5 - 7)
Now we simplify this:
9x^2 - 15x - 12
This is the quadratic equation simplified.
If you want to know more about simplification, you can read:
https://brainly.com/question/723406
Guys I need help on all three please
Answer:
graph 1 proportional
graph 2&3 is non proportional
i think
BRAIN TO CORRECT ANSWER!!
A clothing store conducts a survey to determine customer satisfaction.
Which of these methods will produce the most representative sample of the population of store customers?
A. Survey all customers as they arrive at the store on a Monday.
B. Survey all customers who purchase shoes
C. Survey every 10th customer to enter the store.
D. Survey all customers who leave the store without making a purchase
Answer:
C
Step-by-step explanation:
This method is the best because it will survey the customers under one condition : every 10. If the store gets a lot of customers, then this should be easier to do. The rest are mostly dependent on what they do and that influences the survey. However, C makes it so that every 10 people are surveyed.
Answer:
A isnt the correct answer. B doesnt seem reasonable because its one specific item. D means they arent exactly a customer since they didnt buy anything therefore the answer would be C
C is your answer.
not sure about it tho but its what i would put
You were making $15 an hour and are now making $18 an hour. What is the percent of change in your hourly wage? This is a 2 part question. The first part you will tell the percent of change "Without the % sign included in your answer" the second part you will determine if it is a "Increase or Decrease"
how do you find the surface area of a net of a box with the length of 20 the width of 10 and the highth of 12
Answer:
Total Surface Area = 2(LW+WH+LH)
Step-by-step explanation:
Surface Area of;
face 1 = LW
= 20 × 10
=200
face 2 = WH
= 10×12
= 120
face 3 = LH
= 20×12
=240
TSA = 2(200+120+240)
=560×2
=1120
Addison is 4 times as old as Charlie. In 22 years, Addison will be twice as old as Charlie. Which equation represents their ages in 22 years?
A.4x = x = 22
B.4x + 22 = 2 (x+22)
C.4x + 22 = 2x + 22
D.2(4x) = x + 22
HELPPP
A rancher has a rectangular sheep pen that is 3 meters long and 2 meters wide. The rancher plans to increase both the length and the width of the pen by x meters so that the new area of the pen will be 20 square meters?
Step-by-step explanation:
20=3x+2x.
3x+2x=5x,
so
5x=20.
20/5=4, so
4=x
A rectangle has a length of 12 and a width that is half the length. What is the area?
Answer:
Area = length x width
width = 1/2 length = 12/2 = 6 = width
area = 6x 12 = 72
Hope that answers your question
don't hesitate to comment if you are confused about something
Step-by-step explanation:
Which leg is adjacent to angle L?
Answer:
1st answer is correct
Step-by-step explanation:
JL
hope this helps you
can I have the brainliest please?
Card was bought for 5 dollars. It's has appreciated 5% each year. When will the card be worth 25 dollars?
Answer:
32 years
Step-by-step explanation:
Given data
Principal= $5
Rate= 5%
FInal amount= $25
Time=???
Applying the compound interest formula for time
t= ln(A/P)/r
t= ln(25/5)/0.05
t= ln(5)/0.05
t= 1.60/0.05
t= 35 years
Hence the time is 32 years
Alan and Margot each drive from City A to City B, a distance of 147 miles. They take the same route and drive at constant speeds. Alan begins driving at 1:40 p.m. and arrives at City B at 4:15 p.m. Margot’s trip from City A to City B can be described with the equation y = 64x, where y is the distance traveled in miles and x is the time in minutes spent traveling. Who gets from City A to City B faster?
Answer:
Margot gets from A to B faster
Step-by-step explanation:
Alan takes 2 hr and 35 min = 2. 58... hr
Margot takes 147/64 hr = 2.296.. hr
Write the quadratic equation in standard form.
Answer:
2x² + 6x + 15 = 0
Step-by-step explanation:
Given quadratic equation is,
-2x² - 6x = 15
We have to convert this equation in the standard form of the quadratic equation,
ax² + bx + c = 0
(-2x² - 6x) = 15
-2x² - 6x - 15 = 0
2x² + 6x + 15 = 0
work out the value of N when a=2 and b=3
N = 4a + 6b
Answer:
26
Step-by-step explanation:
N = 4a + 6b
Let a=2 and b=3
N = 4*2 + 6*3
Multiply
N = 8+18
Add
N =26
Answer:
[tex]\huge\boxed{Answer\hookleftarrow}[/tex]
Given,
[tex]a = 2 \\ b = 3[/tex]
So,
[tex]N = 4a + 6b \\ N = 4(2) + 6(3) \\ N = 4 × 2 + 6 × 3 \\ N = 8 + 18 \\ N = 26[/tex]
⎇ The value of N is 26.
Find the perimeter of the triangle in terms of b.
I’m marking branliest
Answer:
7b - 2 = 6b
3b + 7 = 10b
6b + 6b + 10b +10b
12b + 20b
34b
help me !! ASAP
[tex] \huge\mathfrak{question \hookleftarrow}[/tex]
[tex] \sqrt{8 \times 32} [/tex]
Answer:
√(8×32)
√(256)
[tex]16[/tex]
[tex]is \: your \: answer[/tex]
I hope it helps
have a nice day
#Captainpower
Karen and Ricardo are 279 miles apart driving towards each on the same route. Karen drives at a speed of 59 miles per hour and Ricardo drives at a speed of 65 miles per hour. In how many hours will they meet?
Answer:
They will meet in 2.25 hours or 2 hours 15 minutes
Step-by-step explanation:
At any point in time;
distance = speed * time
Let the number of hours at which they meet be x
In x hours, the distance traveled by Karen will be 59 * x = 59x miles
In same x hours, the distance traveled by Ricardo will be 65 * x = 65x miles
Since they are traveling in opposite directions, the distance traveled at that time by Karen will be less than what Ricardo has traveled since he is traveling at a greater speed
However, the sum of whatever they have traveled will be equal to the distance between them
thus;
59x + 65x = 279
124x = 279
x = 279/124
x = 2.25 hours
Dave and 6 friends went to dinner. They split the bill evenly. The total for the meal was $84. How much did each friend pay
Step-by-step explanation:
Dave + 6 friends = 7 friends in total
84 ÷ 7 = 12
Each friend paid $12
Each of them paid $12 for the Meal.
What is Unitary Method?The unitary technique involves first determining the value of a single unit, followed by the value of the necessary number of units.
For example, Let's say Ram spends 36 Rs. for a dozen (12) bananas.
12 bananas will set you back 36 Rs. 1 banana costs 36 x 12 = 3 Rupees.
As a result, one banana costs three rupees. Let's say we need to calculate the price of 15 bananas.
This may be done as follows: 15 bananas cost 3 rupees each; 15 units cost 45 rupees.
We have,
Dave and 6 friends went to dinner.
Total amount of meal= $84
So, each of them paid
= 84/ 7
= 12
Thus, each of them paid $12.
Learn more about Unitary Method here:
https://brainly.com/question/22056199
#SPJ3
need help asap will give brainlyest
Answer:
it in a is correct if im wrong it is B
Step-by-step explanation:
What is the first step in evaluating the expression shown below?
12 : (7.4 - 3.6) + 8 - 2
• LIVE
Subtract 7.4 - 3.6.
• LIVE
Divide 12 : 7.4.
O
O LIVE
Add 3.6 + 8.
O
. LIVE
Subtract 8 - 2.
Answer:
pemdas (parentheses, exponents, multiplication, division, addition, subtraction) so you subtract what's in the parentheses (7.4 - 3.6)
You are going to take a 10-question True/False test. How many ways can this test be answered if leaving questions blank is a viable option for each question?
Answer:
There are 59,049 different ways of answering the exam.
Step-by-step explanation:
The first thing we need to count is the total number of selections, then we need to count the number of options for each one of these selections. The total number of combinations will be equal to the product between all the numbers of options.
Here, the selections are each one of the 10 questions, so we have 10 selections.
And each one of these selections has 3 options (true, false, blank)
So, we have 10 selections with 3 options each, then the total number of combinations will be:
C = 3*3*3*3*3*3*3*3*3*3 = 3^10
C = 59,049
There are 59,049 different ways of answering the exam.
Samantha drives 95 miles each day. How many miles does she drive in 40 days?
Answer:
Samantha drives 3,800 miles in 40 days.
Step-by-step explanation:
1 day = 95 miles so 40 days = 3,800
95 miles x 40 days = 3,800 miles
?????????????????????????????????????????????????
Answer:
a) 0
b) -5
Step-by-step explanation:
We want to find f(x) = -4
This means find the value of x where y=-4
The value of x where y=-4 is x=0
Then find f(2)
This means find the value of y when x =2
The value of y when x=2 is -5
Which class has the largest ratio of boys to girls
Answer:
You need to calculate (# of Boys) / (# of Girls + # of Boys). The largest ratio will be the biggest number
Step-by-step explanation:
Example:
• 55 Boys and 35 Girls
• Boys Ratio = (55) / (55 + 35)
• Boys Ratio = 55 / 90
• Boys Ratio = 61%
If the data represented by the graph is normally distributed, what are the endpoints of the middle 68% of the data?
Answer: -1.8 and 11.4
Step-by-step explanation:
Trust me or don’t lol
Answer:
D. 2.6 and 7
Step-by-step explanation:
Plato course, did the test