Step-by-step explanation:
HERE,
a+b=30
a^2+b^2=740
we know that,
[tex]\tt{(a+b)^2=a^2+b^2+2ab }[/tex]
according to the question,
[tex]\tt{ (30)^2=740+2ab }[/tex]
[tex]\tt{900=740+2ab }[/tex]
[tex]\tt{ 2ab=900-740 }[/tex]
[tex]\tt{ ab=\dfrac{160}{2} }[/tex]
[tex]\tt{ab=80 }[/tex]
#quality answer
the value of ab is 80
Answer:
Solution given:
(a+b)=30....(1)
a²+b²=740......(2)
squaring equation 1:
we have;
formula:
(a+b)²=a²+b²+2ab
use this formula:
(a+b)²=30²
a²+b²+2ab=30²
Substituting value of a²+b²=740
740+2ab=30²
take constant term on one side.
2ab=30²-740
subtract :30²-740
2ab=160
divide both side by 2
2ab/2=160/2
we get:
ab=80
the value of ab is 80
FIRST TO ANSWER GETS BRAINLY
Subtract and reduce to lowest terms:4 and 1/7 minuse 2 and 4/7
Answer:
It is 1 4/7
Step-by-step explanation:
What is the opposite of negative seven?
Answer: 7 is the opposite of negative 7
Step-by-step explanation:
Hope this helps :)
James purchases 500 vinyl records for $25.00. Which statement describes a unit rate for his purchase? (choose all answers that apply)
Question 9 options:
500 vinyl records$25
20 vinyl records$1
$1005 vinyl records
$0.05 1 vinyl record
Answer:
500 vinyl records for $25 and 20 vinyl records for $1
Step-by-step explanation:
you have to multiply 500 by 25 and you get 20 records forjust 1 dollar
What is the percent of change from 14 to 21
it can be from 2% to 3% because 7 is the lowest common factor so 14/7=2 and 21/7 is 3.
Hope this helps! :D
Answer:
50% greater
Step-by-step explanation:
14/2 is 7, and 7+14=21
5. A line has a slope of - 3/4 and a y-intercept of 3. What is the equation of the line?
Answer:
y=(-3/4)x+3
Step-by-step explanation:
Slope intercept form is y=mx+b
m is the slope (-3/4)
b is the y-intercept (3)
Plug the slope and intercept you were given in and you get the equation of the line in slope intercept form
y=(-3/4)x+3
the question is down there uwu
Step-by-step explanation:
what do u need help solve
Answer:
There are 50 on the football team
Haha Gogy profile pic nice
Solve this system of equations by graphing. First graph the equations, and then type the solution.
y=
–
3
2
x+2
y=
–
7
2
x–2
Click to select points on the graph.
Answer:
The answer is below
Step-by-step explanation:
Solve this system of equations by graphing. First graph the equations, and then type the solution. y=2x+2 y=x–2
Solution:
The equation of a straight line is in the form y = mx + b, where m is the slope of the graph and b is the y intercept (value of y when x = 0). To graph the line, online geogebra graphing calculator was used for plotting the two graphs by writing the equation of the graphs.
After plotting the two graphs, the intersection of the two lines should be traced to get the x coordinate and y coordinate of the point. This point is the solution of the two graph equations, hence:
The solution = (-4, -6)
Answer:
(-4-6)
Step-by-step explanation:
Y = -4x + 14
Can you help me
Answer:
I can
Step-by-step explanation:
If you want to solve for Y its 10
If you want to solve for something else tell me:)
If sin(2x - 1) = cos(11), what is x?
Answer:
x = 40 + 180 n , 51 + 180 n , for any integer n
Step-by-step explanation:
Isolate the variable by dividing each side by factors that don't contain the variable.
A. Solve -4x - 4 = 4. Show your work.
B. Verify your solution.
Answer:
-4x=4+4
x=8/-4
x= -2
not sure how I'm supposed to verify
Deshaun exercises no less than 40 minutes per day.
Use t to represent Deshaun's amount of exercise (in minutes per day).
Answer:
no
Step-by-step explanation:
yes
I just need question 2, please help
i need hellp on this pls
Answer:
Reverse
Step-by-step explanation:
Add = Subtract
Multiply = Divide
Square = Square root
Cube = Cube root
Hope this helped!
Simplify the following.
-(3x)2
Answer: -6x
Step-by-step explanation:
multiply 2 by 3
hey there, here's a snazz to help you with your travels through school
Answer:
Ty lol
Step-by-step explanation:
Solve for x
(6x+5) (6x+16) (7x-3)
Answer:
i think it is 43
Step-by-step explanation:
-4 - 8 + 3h - 8h - 5h
Simplified
Answer:
-12-10h
Step-by-step explanation:
Add like terms
(-4) + (-8) = -12
(-8h) + (-5h) = -13h + 3h = 10h
So, (-12)(-10h)
A family went out to eat at a restaurant. Their bill came to $64.20. They want to leave a 20% tip. How much will they leave as a tip? *
Answer:
$12.84
Step-by-step explanation:
calculator
Which ordered pair is a solution of the equation?
y = 82 + 3
Thank you so much ummm ya
Answer:
The answer is C. Based upon the problem, both coordinates are negative.
❤ I hope this helps you, kind stranger! ❤
Mr. Singh had three sheets of stickers. He gave 20 stickers from each sheet to his students and has 12 total stickers left. Write and solve an equation to find how many stickers were originally on each sheet.
Step-by-step explanation:
3x-3(20)=12
3x=72
x=24.
24 stickers on each sheet
GEOMETRY!I will mark the BRAINIEST!!!
Answer:
C. 4
Step-by-step explanation:
You have two pieces of rope. One piece is of rope is 98 feet and the other is 56 feet. You need to cut the rope into equal lengths with non left over. What is the greatest possible lenth you can cut the rope so all peices will be the same
Answer:
14 feet
Step-by-step explanation:
We solve the above question by using the Greatest Common Factor method
We find the factors of 56 and 98
The factors of 56 are: 1, 2, 4, 7, 8, 14, 28, 56
The factors of 98 are: 1, 2, 7, 14, 49, 98
Then the greatest common factor is 14.
Therefore, the greatest possible length you can cut the rope so all pieces will be the same is 14 feet
What are examples of things you can graph from your everyday life? (58 POINTS!)
Answer:
Amount of money in your bank account, how much you get paid per day in your job (or something else I don't know), the calculator numbers (numbers on a calculator), and much more.
Step-by-step explanation:
Some of the stuff is from the other answer but I changed it and added a lot more things.
So thanks to the other answer!
The common types of business graphs are line and bar graphs, pie charts, scatter plots and bar diagrams. Graphs show one set of variables represented in a continuous flow against another variable entity.
hope this helps ;)
One fourth of the children who are on the bus are wearing a blue shirt. If 8 of the children are wearing a blue shirt, how many children are on the bus in total? *
Answer:
32
Step-by-step explanation:
Can you please solve this? I appreciate it thanks!
–5(3 – q) + 4 = 5q – 11
Answer:
0
Step-by-step explanation:
–5(3 – q) + 4 = 5q – 11
-15 +5q + 4 = 5q -11
-11 + 5q = 5q - 11
+5q - 5q = -11 + 11
0=0
zoe has a total of 16 coins. some of her coins are dimes and some are nickels. The combined value of her nickels and dimes is 1.35. How many nickels and dimes does she have?
Given:
In 16 coins some coins are dimes and some are nickels.
The combined value of her nickels and dimes is 1.35.
To find:
The number of nickels and dimes.
Solution:
We have,
Number of total coins = 16
Combined value = $1.35
Let x be the number of nickels and y be the number of dimes.
Total coins: [tex]x+y=16[/tex] ...(i)
We know that,
1 nickel = $0.05
1 dime = $0.10
Combined value: [tex]0.05x+0.10y=1.35[/tex] ...(ii)
From (i), we get
[tex]y=16-x[/tex] ...(iii)
Putting this in (ii), we get
[tex]0.05x+0.10(16-x)=1.35[/tex]
[tex]0.05x+1.60-0.10x=1.35[/tex]
[tex]-0.05x=1.35-1.60[/tex]
[tex]-0.05x=-0.25[/tex]
Divide both sides by -0.05.
[tex]x=\dfrac{-0.25}{-0.05}[/tex]
[tex]x=5[/tex]
Putting x=5 in (ii), we get
[tex]y=16-5[/tex]
[tex]y=11[/tex]
Therefore, the number of nickels is 5 and the number of dimes is 11.
Bracken graphs two points and connects them with a line segment. He reflects the line segment across the x axis and then the y axis and the x axis and y axis again what are the endpoints of the image?
Answer:
You have the correct option marked
Answer:
A (4,-1) and (4,-5)
Step-by-step explanation:
Janae' is buying food for a party. She is buying a cheese tray for $4.50 and a few pounds of fruit for
$1.99 each. She spends $16.44.
what is the rate of change
please help
Answer:
0.67
Step-by-step explanation: