Answer:
n = -3
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDASEquality PropertiesStep-by-step explanation:
Step 1: Define equation
3(-2 - n) = -9 - 4n
Step 2: Solve for n
Distribute 3: -6 - 3n = -9 - 4nAdd 4n to both sides: -6 + n = -9Add 6 to both sides: n = -3Step 3: Check
Plug in n to verify it's a solution.
Substitute: 3(-2 - -3) = -9 - 4(-3)Simplify: 3(-2 + 3) = -9 - 4(-3)Add: 3(1) = -9 - 4(-3)Multiply: 3 = -9 + 12Add: 3 = 3if there is 23 teachers how many students are there
Answer:
460
Step-by-step explanation:
each classroom has ab 20 students so 23x20=460
Answer:
460
Step-by-step explanation:
Say each class has about 20 student you would need to multiply 20 by 23 to get you answer.
Which is 460.
--------------------------------
Hopefully that helped.
In a polar coordinate system, the midpoint of the line segment whose endpoints are $\left( 8, \frac{5 \pi}{12} \right)$ and $\left( 8, -\frac{3 \pi}{12} \right)$ is the point $(r, \theta).$ Enter $(r, \theta),$ where $r > 0$ and $0 \le \theta < 2 \pi.$
Answer:
Step-by-step explanation:
Given the coordinate points (8, 5π/12) and (-3, π/12)
The midpoint is expressed using the formula
M(X,Y) = {(x1+x2)/2, (,y1+y2)/2}
X = x1+x2/2
X = 8-3/2
X = 5/2
Y = y1+y2/2
Y = (5π/12+π/12)/2
Y = (6π/12)/2
Y = 6π/24
Y = π/4
Hence the required coordinate is at(2.5, π/4)
Which expression has a value of 12?
A.4-(-3)+ (-10)÷ (-2)
B. 4(-3 )+(10)+(-2)
C. -6(-2)+4(-3) D.10-(-2)-4(-3)
D.10-(-2)-4(-3)
Answer:
a
Step-by-step explanation:
the option a is the best answer as it's solution is 12
ANSWER SOON!!!!!!!!!!!!!!!!!! ASAP
Which group of words sound the most like a theme?
I love my friends.
True friends stay together through good times and bad.
I get angry at my friends.
Jess is my best friend
I would say it would be "True friends stay together through good times and bad" because it gives a moral of a story.
Answer:
True friends stay together through good times and bad.
Step-by-step explanation:
Fatima has a car detailing service. She charges $15.00 for a vacuum,
$40.00 for exterior wash and wax, and $60.00 for complete interior clean
including shampooing all upholstery. last week she had a busy week. She
had 7 vacuum jobs, 23 exterior wash and wax jobs, and 15 complete
interior cleans jobs. How much did she make all together for all the jobs?
A. 1925
B. 148
C. 1550
D. 3600
Answer: a is the answer
Step-by-step explanation:
help me thank you in advance
Answer:
No idea
Step-by-step explanation:
Answer:
I think the answer is 3
Step-by-step explanation:
Evaluate the following expression when X = -4 X to the power of 2 +2x-9
Answer:
-1
Step-by-step explanation:
X = -4
so x^2+ 2x -9 = (-4)^2 + 2*(-4) - 9
= 16 - 8-9
= 8-9
= -1
help me please with my math warmup
Answer:
35 + .80x > 50
Step-by-step explanation:
You have the original price, which is 35 dollars. Then you have per page, it's 80 cents. You don't know how many pages there are, so you put x. Then it has to be LESS than 50, so you put > 50
Question 2A car dealership has several options for purchasing a new car which includes 7 colours, 6 interior styles, 4 wheelscovers, 4 electronic packages, and 3 engine sizes. How many different combinations are available?
Answer:
2016 possible combinations
Step-by-step explanation:
7 x 6 x 4 x 4 x 3 = 2016
When finding available combinations, you just take all your numbers with the different options and multiply them :)
EXPENSES: Camille has no more than $50.00 to spend each week for lunch and bus fare. Lunch costs $3.00 each day, and bus fare is $1.75 each ride. Write an inequality for this situation. Can Camille buy lunch 7 times and ride the bus 14 times in one week????
Answer:
Inequality: [tex]3.00 L + 1.75B \leq 50[/tex]
She can afford to buy the lunch and bus rides
Step-by-step explanation:
Given
[tex]Maximum\ Amount = \$50.00[/tex]
[tex]Lunch = \$3.00[/tex] daily
[tex]Bus\ Fare = \$1.75[/tex] daily
Solving (a) The inequality
Let bus ride be represented with B and Lunch be represented with L
If 1 bus ride costs $1.75, then
B bus ride would cost $1.75 * B
If 1 lunch costs $3.00, then
L lunch would cost $3.00 * L
Total Spending is then the sum of the above expression i.e.
$3.00 * L + $1.75 * B
The question says Camille can not spend more than $50.00.
This is represented by less than or equal to.
So, the expression is:
[tex]3.00 * L + 1.75 * B \leq 50[/tex]
[tex]3.00 L + 1.75B \leq 50[/tex]
Solving (b): Can she afford 7 lunch and 14 bus ride?
To do this, we simply substitute 7 for L and 14 for B
[tex]3.00 * 7 + 1.75 * 14 \leq 50[/tex]
[tex]21 + 24.5 \leq 50[/tex]
[tex]45.5 \leq 50[/tex]
The above inequality is true.
Hence, she can afford to buy the lunch and bus rides
2. Suppose there are 6 million people in New York City that walk an average of 2.5 miles per day. If we add up all the miles walked by these 6 million how many times around the Earth would these walkers have gone? Assume the distance around the Earth is 2.5 * 10 ^ 4 miles. Write your result in scientific notation.
Answer:
600 timesStep-by-step explanation:
GivenNumber of people:
6 million = 6*10^6Distance to walk:
2.5 miles per day per personDistance around the Earth
2.5*10^4SolutionTotal distance walked:
6*10^6*2.5 = 15*10^6The ratio of total distance to the distance around the Earth:
15*10^6 / 2.5*10^4 = 6*10^2 = 600 timesNumber of people:
6 million = [tex]6[/tex] × [tex]10^{6}[/tex]
Distance to walk:
2.5 miles every day per person
Distance around the Earth
[tex]2.5[/tex] ×[tex]10^{4}[/tex]
Total distance walked:
[tex]6[/tex] × [tex]10^{6}[/tex] × [tex]2.5[/tex] [tex]= 15[/tex] × [tex]10^{6}[/tex]
The ratio of total distance to the distance around the Earth:
[tex]15[/tex] × [tex]10^{6}[/tex] / [tex]2.5[/tex] × [tex]10^{4}[/tex] = [tex]6[/tex] × [tex]10^{2}[/tex] = [tex]600[/tex]
Each side of ΔABC is a line segment. Side AB measures 6 cm, side BC measures 8 cm, and side AC measures 10 cm. Suppose the triangle was rotated 90° about the origin in a coordinate plane. Which of these statements would be correct about the resulting triangle?
A.
Side BC would measure 10 cm.
B.
Side AB would measure 8 cm.
C.
Side BC would measure 8 cm.
D.
Side AC would measure 6 cm.
Answer:
C
Step-by-step explanation:
You are just rotating it so therefore nothing would happen to the triangle
i will give brainliest if you tell me how to give it
Answer:
4
Step-by-step explanation:
its a crown by report
Answer:
When two people answer the question a crown pops up on your screen then you look at the answer you like best and click the crown. By the way the answer is 4.
Step-by-step explanation:
Please mark me my first brainliest
Simplify the expression.
4 (-y + 2) – 3y
A. y – 8
B. -7y + 2
C. -7y + 8
D. y + 8
and SHOW YOUR WORK PLZSSSSSSSSSSSS
Answer:
C. -7y+8
Step-by-step explanation:
Answer:
C
Step-by-step explanation
4(-y+2)-3y
distribute the 4 and make it this: -4y+8-3y
add together like terms and make it this: -7y+8
Factor 50q+ 40r.
help please!
Answer:
10 (5q + 4r)
Step-by-step explanation:
pull out a 10 to simplify. 10 is the greatest common factor
If a water park sold 170 tickets and 30% of them were adult tickets, how many tickets did they sell that were not for adults?
119 tickets
have a good day
Answer:
30% of 170 is 51, so 51 adult tickets were sold. Now, we subtract that from 170 . to get 119. 119 were not adults
Step-by-step explanation:
x to the power of 3-5.5 when x = 3
Answer:
15.588
Step-by-step explanation:
3-5.5=-2.5
3^2.5=15.588
lend me a hand please
Answer:
A) y>=-1
Step-by-step explanation:
The line itself is y=-1, but it is also filled in. Therefore, we are down to either A or C as the right answer
Since (0,0) is a solution to the inequality as indicated by the shade, we know that since y=0 in the origin, 0 is greater than -1, so therefore A is the correct answer.
find the greatest 3 digit number which is exactly divisible by 4,8 and 12
Answer:
768
Step-by-step explanation:
Helpppp!! There’s a picture(Ik this isn’t math. I didn’t know what to put it as)
I need help please help
Answer:
the second one
Step-by-step explanation:
A pizzeria sells a round pizza with a diameter of 16 inches.
Another pizzeria sells a large square pizza with a side length of 15 inches
Which has more crust along the outside edge of the pizza, the round pizza or the square pizza?
Answer:
Square pizza
Step-by-step explanation:
d = Diameter of round pizza = 16 inches
a = Side length of square = 15 inches
More crust means the edge length of the pizza is greater. Edge length is given by the perimeter.
Circumference or perimeter of the round pizza
[tex]C=\pi d\\\Rightarrow C=\pi\times 16\\\Rightarrow C=50.27\ \text{inches}[/tex]
Perimeter of the square is
[tex]P=4a\\\Rightarrow P=4\times 15\\\Rightarrow P=60\ \text{inches}[/tex]
So, the square pizza has more crust compared to the round pizza.
State the Slope. State the y intercept. Write an equation in slope intercept for.
Answer:
A. slope = 1/3
B. y- intercept is (0, 3)
C. y=(1/3)x +3
Step-by-step explanation:
A. slope = Δy/Δx = (4-2)/ (3 +3) = 2/6 = 1/3
B. y- intercept is (0, 3)
C. y=(1/3)x +3
102 is 0.6% of what number
102 is 60% 170. Divide 102 by 0.6, which results in 102. Hope this helps! Have an amazing rest of your day and please mark brainliest! xx
Compare and contrast Converse and Inverse. Explain.
At 9:00 a.m., the wind speed at Harbor Bay was recorded. After that, the wind speed was recorded every hour. Each measurement showed an increase in wind speed of 3 miles per hour. The strongest wind was recorded at 4:00 p.m., and measured 52 miles per hour. After that, the wind speeds started to decrease. How windy was it when the experiment began?
Answer:
The wind speed was 31 miles per hour when the experiment began.
Step-by-step explanation:
Linear Dependency
The wind speed is known to increase at a rate of 3 miles per hour every hour.
From 9:00 a.m. to 4:00 p.m. there are 7 hours.
Thus, the speed increased by 7 * 3 = 21 miles per hour during that period of time.
Assuming the wind increased linearly, and its speed was measured at 52 miles per hour at 4:00 p.m., then the initial speed at 9:00 a.m. is calculated by subtracting:
52 miles / hour - 21 miles / hour = 31 miles / hour
The wind speed was 31 miles per hour when the experiment began.
Answer:
The wind speed was 31 miles per hour when the experiment began.
Step-by-step explanation:
My teacher reviewed the test and said all the right answers.
PLEASE SOMEONE HELP ME. I WILL BRAINLIEST YOU AND GIVE YOU POINTS.
Answer:
Step-by-step explanation:
This recipe normally creates 4 servings Can someone please modify this recipe so it creates 30 servings. I will give brainlist to whoever completes this
1 cup fresh pineapple chunks
1/2 cup cantaloupe or other melon chunks
1 cup fresh strawberries
Juice of 2 oranges
1 cup of cold water
1 tablespoon honey
Answer:
4 x 7.5 = 30
Step-by-step explanation:
7-1/2 cups of fresh pineapple chunks
3-3/4 cup cantaloupe or other melon chunks
7-1/2 half fresh strawberries
juice of 15 oranges
7-1/2 cups cold water
7-1/2 tablespoons of honey (just under 1/2 cup) or 1/4 cup + 3-1/2 tablespoons honey
4x-2=x+13
Solve for X
Show all steps
Answer:
x=5
Step-by-step explanation:
isolate the x on one side of the equal sign so move the 2 over by adding 2
4x=x+15 ( add 2 to both sides )
then move the x over
3x=15 ( subtract x from both sides )
then divide by 3
x=5
Answer: Hope it helps, have a nice day :)
x=5
Step-by-step explanation:
So you can only have x on one side, so first you move an x to the other side of the equal sign.
so, 4x-2=x+13, you can move either x, but I'm moving x instead of 4x
-x -x
Your new equation is 3x-2=13, because the x's cancel out
Then you add 2 on both sides 3x-2=13
+2 +2
___________
3x=15
then you divide by 3 on both sides
3x divided by three leaves x by itself, and 15 divided by three is 5.
3x=15
3 3
x=5
HELP PLZ
The kingdom of Arendelle is trying to decide who to send to the regional track meet. Anna, Elsa, and Olaf competed in the long jump and their 6 jumps are shown below (in meters). Kristoff says that Olaf has the longest average, so he should be sent to the track meet. Do you agree or disagree? Why?
Please find table attached
Answer:
Agree: Olaf should be sent to the track meet because he has the longest average
Step-by-step explanation:
To ascertain if this is true, we must calculate the average for each athlete
Mean or average of athlete= total score of jumps/ number of jumps
Average for Anna= 3.25+3.95+4.28+2.95+3.66+3.81/6 = 3.65
Average for Elsa=3.55+3.88+3.61+3.97+3.75+3.59/6
=3.725
Average for Olaf=3.67+3.78+3.92+3.62+3.85+3.73/6
= 3.76
Therefore Olaf has the longest average =3.76