Answer:
C) $90.48
Step-by-step explanation:
72.39*.2=14.478
72.39*.05=3.6195
14.478+3.6195=18.0975
18.0975+72.39=90.4875
The expression 7n-8n-5+n+2-1 can be simplified to:
Answer:
It can be simplified to: -4
Step-by-step explanation:
Answer:
-4
Step-by-step explanation:
combine like terms 8n-8n-6+2
8n-8n=0 so
-6+2=-4
Match the graphs
Undefined
Positive
Negative
Zero
Answer:
This is what I got
Step-by-step explanation:
1. Is decreasing so therefore is negative
2. Is undefined, Changed but is neither negative or positive
3. Is zero because it just stays the same
4. Is increasing therefore is positive
3. Nicole can paint a room in six hours, Alexandra can paint a room in 5 hours,
and Liana can paint a room in 4 hours. If all three work together, how long
will it take them to paint the room?
5. Solve this system of equations. 3x + 4y = 36 y = -x +8.
please help meee3333............
Answer:
x = -4 and y = 12
Step-by-step explanation:
Since you have y = -x + 8 you can substitute this into the first equation where y was so you have 3x + 4(-x + 8) = 36.
That way, there is only one variable and it is easier to solve.
3x + 4(-x + 8) = 36
3x -4x + 32 = 36
-x +32 = 36
-x = 4
x = -4
Plugging this into the equation y = -x +8,
y = -(-4) + 8
y = 4 + 8
y = 12
Express the ratio 3:9 in its simplest form.
Answer:
1:3 I think
Step-by-step explanation:
3/3=1
9/3=3
Answer:
3/9 = 1/3
Step-by-step explanation:
simplifying
A stone is thrown straight down from a tall building. The relation h = 150 - 5t - 5t^2
approximates its path, with h in metres and t in seconds.
a) How tall is the building?
b) Factor the right side of the equation fully.
c) When does the stone hit the ground?
Answer:
a) The building is 150 m tall
b) h(t)=-5(t+6)(t-5)
c) The stone hits the ground at 5 seconds.
Step-by-step explanation:
Function Models
The path of a stone thrown down from a tall building is modeled by the function:
[tex]h(t)=150-5t-5t^2[/tex]
Where h is the height in meters and t is the time in seconds after the stone is thrown.
a) To find the height of the building, we set t=0 because it's the moment when the stone is thrown and has the same height as the building:
[tex]h(0)=150-5*0-5*0^2[/tex]
[tex]h(0)=150[/tex]
The building is 150 m tall
b) The function is
[tex]h(t)=150-5t-5t^2[/tex]
Factoring out -5:
[tex]h(t)=-5(-30+t+t^2)[/tex]
Rearranging:
[tex]h(t)=-5(t^2+t-30)[/tex]
To factor the polynomial in parentheses, we must find two numbers whose product is -30 and sum is 1. We can also use the quadratic formula to find the roots and factor later.
These numbers are 6 and -5, thus the function is:
[tex]h(t)=-5(t+6)(t-5)[/tex]
c) The stone hits the ground when h=0:
[tex]-5(t+6)(t-5)=0[/tex]
The equation has two solutions:
t = -6
t = 5
The only feasible solution is t = 5, thus the stone hits the ground at 5 seconds.
RECEIVE 50 POINTS FOR THIS!!!!!!!!!! EASY QUESTION
1- I have three times as many cats as Alice but Bob has 7 less cats than me. In total we have 56 cats. How many cats do I have?
Answer:
27
Step-by-step explanation:
10 - 5(x - 1) what is the answer to this ?
Answer:
15 - 5x
Step-by-step explanation:
10 - 5(x - 1)
Multiply 5 by x and 1 using the distributive property.
10 - 5x + 5
Add like units. 10 + 5 = 15
15 - 5x is your final answer.
16
(V – 60°
56
3x + 4
Answer:
wait what do you want to know?
Solve each system of equations using substitution
I did the first question as reference. Pretty simple once you get it!
Please help me!
15. What is the amplitude of the wave in the diagram? What is the wavelength?
Pls help if u can ! For brainly
Answer:
5/8
Step-by-step explanation:
1/4+3/8=5/8
SOLVE FOR X 4 (2x + 3) = 6x + 10 A. -2 B. -1 12 D. 1 OD B А A
Answer:
x= -1
Step-by-step explanation:
4 (2x + 3) = 6x + 10
8x+12=6x+10
8x+12-12=6x+10-12
8x=6x-2
8x-6x=6x-2-6x
2x=-2
x= -1
Solve plzzzzzz i need help
3p-4=14
Answer:
p = 6
Step-by-step explanation:
3p - 4 = 14 / +4
3p = 18 / ÷ 3
p = 6
Help please due in 5 minutes
Answer:
a
Step-by-step explanation:
Answer:
It b.
Step-by-step explanation:
You can use demos for this (graphing calculator. :)
9.
Brian says that ABCD is a right triangle. Is he correct? Explain.
B
17 m
13.5 m
21.7 m
Answer:
sorry but can u give me full question
Step-by-step explanation:
like picture
I’ll mark you brainlist please help
Answer:
The x is the domain and the y is the range. It's still a function
Step-by-step explanation:
which numbers in the list are less than -0.94?
Answer:
The answer is B
The numbers -2.23 [tex]-2\frac{2}{5}[/tex], and -0.95 are numbers that are less than -0.94 option (B) is correct.
What is inequality?It is defined as the expression in mathematics in which both sides are not equal they have mathematical signs either less than or greater than known as inequality.
We have a number list:
-15/16, 0.24, -2.23, 97%, [tex]-2\frac{2}{5}[/tex], -0.95
We can write these numbers such as:
-0.9375, 0.24, -2.23, 0.97, -2.4, -0.95
Now comparing the each number with -0.94
-0.9375 > -0.94
0.24 > -0.94
-2.23 < -0.94
0.97 > -0.94
[tex]-2\frac{2}{5}[/tex] or -2.4 < -0.94
-0.95 < -0.94
Thus, the numbers -2.23 [tex]-2\frac{2}{5}[/tex], and -0.95 are numbers that are less than -0.94 option (B) is correct.
Learn more about the inequality here:
brainly.com/question/19491153
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The number of employees for a certain company has been decreasing each year by 5%. If the company currently has 900 employees and this rate continues find the number of employees in 17 years
Answer:
2062 employees
Step-by-step explanation:
Basically, you have an exponential function going on here. If you start with 900 employees and add 5 percent to the amount of employees (multiply by 1.005) seventeen times, you will get the equation [tex]E=900*1.05^{17}[/tex]. If we round down (because there can not be a fraction of an employee), there will be 2062 employees after 17 years.
which number will make the fractions equal? 3/10 = 30/?
A) 1
B) 10
C) 100
D) 1000
Answer:
c) 100
Step-by-step explanation:
1. Carly buys a pair of jeans. The store marks them down 25%. They were originally $59.80 and she has to pay a tax of 8%. What is the price of the jeans after the discount and then tax is applied?
Hey there!
The answer is $48.44
We can solve this by first finding how much the discount is.
0.25 x 59.80
14.95
The amount of the discount is 14.95, so we then take the discount off.
59.80 - 14.95
44.85
Then, we find the amount of tax.
.08 x 44.85
3.588 (round to nearest cent = 3.59)
Then, add the price of the tax onto the price of the jeans.
3.59 + 44.85
48.44
Hope this helps! Good luck!
Helpp...!!! Ppease i need helpppp
PLEASE HELP, I WILL GIVE BRAINLIEST AND 100 POINTS
Generate the first five terms of each sequence.
n^2
Answer:
a) [tex]f(n) = n^{2}[/tex]
[tex]f(1) = 1[/tex], [tex]f(2) = 4[/tex], [tex]f(3) = 9[/tex], [tex]f(4) = 16[/tex], [tex]f(5) = 25[/tex]
b) [tex]f(n) = n^{3}[/tex]
[tex]f(1) = 1[/tex], [tex]f(2) = 8[/tex], [tex]f(3) = 27[/tex], [tex]f(4) = 64[/tex], [tex]f(5) = 125[/tex]
c) [tex]f(n) = n^{2}+n^{3}[/tex]
[tex]f(1) = 2[/tex], [tex]f(2) = 12[/tex], [tex]f(3) = 36[/tex], [tex]f(4) = 80[/tex], [tex]f(5) = 150[/tex]
Step-by-step explanation:
This formulas uses only natural numbers, which means that [tex]n \ge 1[/tex]. Then, we evaluate each function at 1, 2, 3, 4 and 5:
a) [tex]f(n) = n^{2}[/tex]
[tex]f(1) = 1[/tex], [tex]f(2) = 4[/tex], [tex]f(3) = 9[/tex], [tex]f(4) = 16[/tex], [tex]f(5) = 25[/tex]
b) [tex]f(n) = n^{3}[/tex]
[tex]f(1) = 1[/tex], [tex]f(2) = 8[/tex], [tex]f(3) = 27[/tex], [tex]f(4) = 64[/tex], [tex]f(5) = 125[/tex]
c) [tex]f(n) = n^{2}+n^{3}[/tex]
In which each element is the sum of respective results found in a) and b).
[tex]f(1) = 2[/tex], [tex]f(2) = 12[/tex], [tex]f(3) = 36[/tex], [tex]f(4) = 80[/tex], [tex]f(5) = 150[/tex]
Which measurements are necessary for determining both the speed and
velocity of a moving object?
A. Distance, time, and direction
B. Direction, displacement, and distance
C. Distance, direction, and acceleration
D. Direction, time, acceleration
Answer:
b i am pretty sure
Step-by-step explanation:
Direction, displacement, and distance are the measurements are necessary for determining both the speed and velocity of a moving object
What is Speed?Speed is the time rate at which an object is moving along a path, while velocity is the rate and direction of an object's movement.
The measurements which are necessary for determining both the speed and velocity of a moving object.
Speed=Distance/Time
To calculate speed we need to know the distance and time.
Velocity is the directional speed of an object in motion as an indication of its rate of change in position as observed from a particular frame of reference
Velocity=Displacement / Time
Hence Direction, displacement, and distance are the measurements are necessary for determining both the speed and velocity of a moving object
To learn more on Speed click:
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Footlocker has sale ln any three shirts for $55.50 meanwhile nike is having their own sale ln any five sale shirts for $79.99 which store offers the best deal what is your saving per shirt
Answer:
$55.50 for three shirts
Step-by-step explanation:
The computation is shown below:
For this question we calculate the average for both the options
For the first option, the average is
= $55.50 ÷ 3 shirts
= $18.50 per shirt
For the second option, the average is
= $79.99 ÷ 5 shirts
= $15.998 per shirt
As per the above calculation, the first option is to be best deal as the amount per shirt is high so the same is to be selected
QUICKK
Solve systems by substitution Find the solution
SHOW ALL WORK
y = -2
2x + 2y = 4
( , )
24 POINTS lots of points PLEASE Answer the following correctly please need help
question is in the picture
Answer:
4 quizzes are taken per week
Step-by-step explanation:
12/3=4
20/5=4
A group of friends paid $7 each to play
a round of golf. It also cost $12 to rent
a golf cart. As a group, they paid $33
altogether. Determine the number of
friends that played golf.
#10
G8 YU
Answer:
3 friends played golf.
Step-by-step explanation:
what is the equation of this line?
Answer:
Y=4
Step-by-step explanation:
The line is horizontal, which means that variable would be 4. The line starts at 4, which mean the equivalent of the variable is 4.
Jayla wants to score more than 90 points this season. Assume she scores 6 points in each game. How many games does she need to play to reach her goal?
Answer:
She would need to play AT LEAST 15 games
Step-by-step explanation:
If she wants to score 90 points or above in a season she would have to play at least 15 games because, 90 divided by 6 (How many points she scores) equals 15.