Answer:
20p & 4y
Step-by-step explanation:
combine like terms yk
8x + 5x what is it simplify
Answer:
13x
Step-by-step explanation:
you would just add the 2 numbers together and then keep the variable. if you know the variable (if there’s a sheet to go off of) then multiply and add but otherwise it’s just 8 + 5 then add an x. 13x
=====================================================
Explanation:
x is a placeholder for a number. Think of it like a box holding a number. Conveniently, the letter 'x' is in the word 'box', so its naturally fitting to use x here.
Writing 8x could represent the idea of us having 8 boxes that are identical. Adding on 5x means we add on 5 more boxes. This leads to 8+5 = 13 boxes in total.
This is one way to see how 8x+5x = 13x
Another way is to write it like this: 8x+5x = (8+5)x = (13)x = 13x. I used the distributive property here.
Combining these terms is possible because 8x and 5x are like terms. They have the same variable and same exponent. We're adding two of the same type of object together.
A toy rocket lifts off at an initial velocity of 102 feet per second from a height of 10 feet. The height of the rocket can be modeled by the equation h = – 16t2 + 102t + 10, where ‘t' is the time in seconds. When will the rocket hit to the ground?
Answer:
6.47secs
Step-by-step explanation:
Given the height of the rocket modelled by the equation;
h = – 16t^2 + 102t + 10, where ‘t' is the time in seconds
The rocket will hit the ground at h = 0
Substitute into the equation
– 16t^2 + 102t + 10 = 0
Multiply through by -1
16t^2-102t-10 = 0
t = 102±√(102)²-4(16)(-10)/2(16)
t = 102±√10404+640/32
t = 102±√11044/32
t = 102 ±105.09/32
t = 102+105.09/32
t = 207.09/32
t = 6.47secs
Hence it will take 6.47secs for the rocket to hit the ground
a quadratic function that fits the points (0,5) (2,3) (4,9)
Answer:
Step-by-step explanation:
y=ax^2+bx+c we are given point (0,5) so if x=0, y=c, so c=5. We have two other points
(2,3)(4,9) which gives us
4a+2b+5=3 and 16a+4b+5=9
Subtracting twice the first from the second
16a+4b+5-8a-4b-10=9-6
8a-5=3
8a=8, so a=1, so using 4a+2b+5=3 we get
4(1)+2b+5=3
2b+9=3
2b=-6
b=-3 so our quadratic is
y=x^2-3x+5
Given that f(x) = x + 3/2
a) Find f(2)
b) Find f^-1(x)
c) Find f^-1(12)
Step-by-step explanation:
f(x) = x + 3/ 2
For a
f(2) = 2 + 3 / 2
= ( 4 + 3 ) /2
= 7/2
For b
f(x) = x + 3/2
f^-1(x) = ?
Let y = f(x)
y = x + 3/2
Interchanging the roles of x and y we get,
x = y + 3 / 2
y = x - 3 / 2
Therefore f^-1(x) = x - 3 / 2
For c)
f ^ -1(12) = 12 - 3 / 2
= (24 - 3) / 2
= 21 / 2
Hope it will help :)
Please help right now why no one is answering me
Answer:
(0,0) .......................
Evaluate the following expression: 8x - 6 - 7y + 3 use x=3 and y=6
Answer:
-27
Step-by-step explanation:
8x - 6 - 7y + 3
X = 3 Y = 6
8(3) - 6 - 7(6) + 3
8 x 3 = 24
7 x 6 = 42
24 - 6 - (42 + 3)
(24 - 6) - 45
18 - 45 = -27
a12 means that the exponent of an arithmetic function is 12
TRUE or FALSE
What is the slope of the line that passes through the points
(
4
,
−
2
)
(4,−2) and
(
24
,
−
17
)
?
(24,−17)? Write your answer in simplest form.
Answer:
-3/4Step-by-step explanation:
Given the coordinates (4, -2) and (24, -17), we are to find the slope of the line passing through the points
Slope = y2-y1/x2-x1
Slope = -17-(-2)/24-4
Slope = -17+2/20
Slope = -15/20
Slope = -3/4
Hence the required slope is -3/4
1 of 5
The ratio of boys to girls in a class is 3:4. There are 35 students in the class. How many
students are girls?
Answer:20 girls
Step-by-step explanation:the difference between 3 and 4 is one so there will be a difference of one between the 2 questions.
What is the acceleration of a car that goes from 65 km/s to 125 km/h in 5 seconds?
PLEASE SHOW WORK!
please answer thoroughly :)
Answer:
Step-by-step explanation:
the measure of b is?
Answer:
35.228
Step-by-step explanation:
Answer:
b=21
Step-by-step explanation:
For this problem we need to use Pythagorean theorem (a^2+b^2=c^2):
20^2+b^2=29^2
Simplify the squares:
400+b^2=841
Subtract 400 from both sides:
b^2=441
Take the square root of both sides:
b=21
HTH :)
Help me with my homework pls :)
Answer:
That smile tho lol
anywayssssss
b= 16 mm
Step-by-step explanation:
Pythagorean theorem is a^2 + b^2= c^2, so-
12^2 +b^2= 20^2
144+b^2=400
b^2=400-144
b^2= 256
b= 16
Answer:
16 mm
Step-by-step explanation:
A²+B²=C²
12²+x²=20²
144+x²=400
x²=400-144
x²=256
√x = √256
x = 16
PLz, help I really don't understand these problems at all.
Click here to see the screenshot
Answer:
1. $65,000
2. A 4 and 2 mile hike
3. B 4.00
4. C multiplication
Step-by-step explanation:
Find x, the height of the tree. (Decimal Answer)
Answer:
i think it is 15.9 but that is only if the two triangles are congruent
Step-by-step explanation:
is x equals 12 a solution to the equation 6 + x = 19
Answer:
13
19 minus 6 is equal to 13 so your answer would be thirteen
I need help on this question
Answer:
D
Step-by-step explanation:
Which of the following is a reflection of ( 2,4 ) across the x-axis?
a -2, 4
b 2, -4
c 4, 2
d -2, -4
Answer:
(2,-4)
Step-by-step explanation:
(2,4) is located in Quadrent I (+,+), if you reflect over the x-axis, it would be in Quadrent IV (+,-).
if you dont understand I suggest you draw a coordinate plane on a graphing notebook.
350/100 of the revenue
Answer:
3.5
Step-by-step explanation:
Decrease £101 by 43%
Give your answer rounded to 2 DP.
£
Answer:
10
Step-by-step explanation:
round it by 2 and there you go!
Ariel swims 2 1/6 miles in every 1/3 hour.Enter the number of miles Ariel swims in 1 hour.
Answer:
6.5 miles
Step-by-step explanation:
If she travels 2 1/6 in 1/3 hours you would simply multiply by 3 because she would need to travel 2 1/6 miles three times in order for an hour to pass.
What is 3/4 x 6 , simplified .
Answer:
9/2
Step-by-step explanation:
3/4 x 6 can be thought of as multiplying 3/4 x 6/1
When multiplying fractions, multiply the numerator (top number) with the numerator, and the denominator with the denominator.
3/4 x 6/1 = (3x6)/(4x1)
3/4 x 6/1 = (18)/(4)
3/4 x 6/1 = 9/2
Let me know if this helps!
Answer:
92/
Step-by-step explanation:
3/4×6
18/4
9/2
hope it's helpful ❤❤❤❤
THANK YOU.
#
5 2/5 divided by 9/10
Answer:
Step-by-step explanation:
5 2/5 = [(5*5)]+2 / 5 = (25+2) / 5 = 27/5
(27/5)/(9/10) = 27/5 * 10/9
cross cancel 27 becomes 3 and 9 becomes 1, 5 becomes 1 and 10 becomes 2
= 3/1 * 2/1 = 6/1 = 6
Help Julie has the boxes of pens
Answer:
A=C+16
Step-by-step explanation:
14.2 is 35.5% of what number w?
Mary needs to buy 4 concert tickets and one parking pass. If parking is $12, and she can spend at most $80, what ticket prices can she afford? (set up an inequality, do not solve)
Answer:
4t + 12 [tex]\leq[/tex] 80
Step-by-step explanation:
Set up an inequality where t is the cost of one ticket
Since her budget is $80, a less than or equal sign needs to be used.
4t will represent the total cost of the tickets, since she needs to buy 4. Add 12 to this to represent the parking cost:
4t + 12 [tex]\leq[/tex] 80 is the inequality.
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Nearpod - Slor X
Playing a Gar x
Nearpod - Slope Day 2
app nearpod.com
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Find the slope of the line that passes through:
(6,7) and (4,2)
1
2.
5
5
2
Answer:
slope is 5/2
Step-by-step explanation:
5 over 2
Jamie need to earn more than $4,000 to pa his monthly bills. he earns a monthly salary of $2,500 plus an extra $75 for every electronic device he sells. Write an inequality to determine the minimum number of electronic devices Jamie needs to sell each month in order to have enough money to pay his monthly bills. Let d represent the number of electronic devices Jamie needs to sell each month. Help plz.
Answer:
hi
Step-by-step explanation:
hi
Need help can’t find anyone else answering this one
Answer:
x =4
Step-by-step explanation:
What would be the best method to solve
the system of equations below?
6x + 3y = 21
2x – 3y = -13
Elimination method is the best method to solve the system of equations below
What is Equation?Two or more expressions with an Equal sign is called as Equation.
The given system of equations
6x + 3y = 21...(1)
2x – 3y = -13...(2)
Add equations (1) and (2)
6x+3y+2x-3y=21-13
8x=8
Divide both sides by 8
x=1
Now plug in x value in equation 1
6+3y=21
Subtract 6 from both sides
3y=15
Divide both sides by 3
y=5
By Elimination method we find the values of x and y.
Hence, Elimination method is the best method to solve the system of equations below
To learn more on Equation:
https://brainly.com/question/10413253
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