Answer and Step-by-step explanation:
It ensures that you don't accidently skip a step or get confused by which numbers are being used. By writing it down, it allows you to look back and see if you answer was correct or incorrect.
For example:
On a test, you need to do a complicated math problem that you know you can do in your head. It would still be a good idea to write down the process, so that you can see in front of you the numbers you get and results. If it is incorrect when checking over you answers, then you can go through the steps you made to see where you made a mistake.
#teamtrees #PAW (Plant And Water)
Answer:
Because when you need to use this information in the future it will be in your notebook/binder. When you study each lesson you will have the answers in your notes for when you do a Test or quiz. When doing math in your head it is called mental math but it is only used when needed.
Step-by-step explanation:
- chicken box
Two trains leave New York at the same time. One travels south 50 miles per hour and the other traveled east at 40 miles per hour. How far apart are they at the end of THREE HOURS?
Answer:
192 miles
Step-by-step explanation:
This is a right triangle problem
One leg of the triangle is
50 * 3 = 150
The other leg is
40 * 3 = 120
the distance is the hypotenuse
c^2 = 150^2 + 120^2
c^2 = 22500 + 14400
c^2 = 36900
Take the square root of both sides
c = 192.093727123
c ≈ 192 miles
Answer:
30 miles apart
Step-by-step explanation:
Im not sure if this is the corect answer to this but this is what i think what i did was get 50 x 3 and 40 x 3 since they starded at the same times and finished after 3 hours so multiply your numbers by 3 so...
50 x 3=150
40 x 3=120
150-120=30 miles apart
please help middle school math I will mark brainliest (picture included so it could be a little easier)
Point P is plotted on the coordinate grid. If point S is 12 units to the left of point P, what are the coordinates of point S? 10 NAG -12-10-864 -20 32 2 4 6 8 10 12 TP -6 -S 10 - 12 (6.-16) (-6.-16) o(-6,-4) (6,4)
Answer:
(-6, -4)
Step-by-step explanation:
Original coordinates: (6, -4)
POINT S IS 12 UNITS TO THE LEFT OF POINT P.
There are multiple ways to solve this, but I will explain the easiest way.
We can subtract 12 from the x-coordinate.
This because the x-axis runs RIGHT and LEFT.
The y-axis runs UP and DOWN.
6 - 12 = -6
The y-coordinate stays the same.
The new coordinates are: (-6, -4).
The new number 200 is 400 less than the original number what is the approximate per percent change
Answer:
200+400=600
400/600=2/3=66.6%
Helppppppppppp!!!!! Please
Answer:
The answer is C.
Step-by-step explanation:
angle 5 and 4 makes a line which is 180 and since angle 5 equals 57 , 180-57=123.
what is the value of 2(4x + 3) when x=3
Answer: 30
Step-by-step explanation:
Im pretty sure its that! Have a good day. Do not press the link for the other people its fake :)
Judah’s family wants to ride the bumper boats at a waterpark. There are 4 children ( c ) and 2 adults ( a ) in Judah’s family. The boats are safe to ride if 40 c + 120 a ≤ 500 . Are the bumper boats safe for Judah’s family to ride? Explain. Show your work
Answer:
ion know
Step-by-step explanation:
What are the lateral area and the surface area of the cone shown below? Round the answers to
the nearest tenth. The figure is not drawn to scale.
Answer:
lateral surface area of the cone = 829.0ft²
Hence the total surface area is 1,208.9ft²
Step-by-step explanation:
lateral surface area of the cone = πrl
l is the slant side = 24ft
r is the radius = 11ft
lateral surface area of the cone = π(11)(24)
lateral surface area of the cone = 3.14 * 264
lateral surface area of the cone = 828.96ft²
lateral surface area of the cone = 829.0ft²
Total surface area = πr(r+l)
r is the radius = 11ft
l is the slant side = 24ft
Total surface area = π(11)(11+24)
Total surface area = π(11)(35)
Total surface area = 3.14 * 385
Total surface area = 1,208.9ft²
Hence the total surface area is 1,208.9ft²
Need help pls help will gift extra points if help plz explain how you soved it
Answer:
both 125° and the 5x+30 are congruent to eachother. therefore you can go
5x+30=125
subtract 30 from both sides.
5x=95
then divide both sides by 5
x=19
1.l
Paul has 2 bags of Skittles. Each bag
contains 84 Skittles. If Paul eats 38
Skittles and gives 29 Skittles to each
of his two friends, how many
Skittles
does Paul have left?
Answer:72
skittles left
Step-by-step explanation:
Answer:
Paul would have 72 skittles left
Step-by-step explanation:
84 x 2 = 168
168 - 38 = 130
130 - 29 = 101
101 - 29 = 72
Ariel and Eric dance in the village. Soon, others join in. Knowing that there are 130 toes, how many dancers are there?
- 30 people
- 10 people
- 13 people
- 3 people
Answer:
13 dancers
Step-by-step explanation:
Since each human has 10 toes, and there are 130 toes,
[tex]\frac{130}{10}=13[/tex]
So, there are 13 people dancing.
Which of the following represents the area of a rectangle whose length is 3x + 5 and whose width is. x – 2?.
A.) 3x^2 + x – 10
B.) 3x^2 – 10
C.) 3x^2 – 11x – 10
D.) 3x^2 – x – 10
ms. irwin teaches four periods of weight training. she required each student in thr class to record the maximum amount of weight lifted for the squat. based upon the data listed below, which period had the greatest mean score?
period 1 : 100, 100, 125, 125, 130, 130
period 2 : 90, 125, 125, 130, 135, 135
period 3 : 90, 90, 100, 125, 125, 125
period 4: 90, 90 , 90, 100, 100, 125
a. period 1
b. period 2
c. period 3
d. period 4
Answer:
a
Step-by-step explanation:
Please mark brainliest
Inscribed angles: find the value of each variable. The dot represents the center
Answer:
4
Step-by-step explanation:
HELP ME PLEASEEEEEEEEEEE
Answer: g=8
Step-by-step explanation: Hope this help :D
Amy knits 1/10 of a scarf in 4/5 of an hour. What fraction of scarf can Amy knit in 1 hour
Answer:
Amy can knit [tex]\frac{1}{8}[/tex] of a scarf in 1 hour.
Step-by-step explanation:
This question can be solved by proportions, using a rule of three.
We have that:
1/10 of a scarf - 4/5 of an hour
x of a scarf - 1 hours.
Applying cross multiplication:
[tex]\frac{4x}{5} = \frac{1}{10}[/tex]
[tex]x = \frac{5}{10*4} = \frac{5}{40} = \frac{1}{8}[/tex]
Amy can knit [tex]\frac{1}{8}[/tex] of a scarf in 1 hour.
The area of a triangle is 30 square feet. If
the base is 4 feet, then what is the height?
im a boy im in 7th grade 13 years old and single i need some help
single too and 13 I can't help bc I ain't smart
It is 186 miles from Sergio's house to his parents' house.
Twice a year, he drives to visit them.
Then he drives home.
How many miles does he drive on the two round-trips?
ANSWER CHOICES-
372 miles
424 miles
724 miles
744 miles
Answer:
Step-by-step explanation:
He drives double the distance from his house to his parents house.
Answer:
answer: 744
Step-by-step explanation:
He drives 744 because 186 × 4 = 744 because its 186 to go there then 186 to go back then 186 to go there then 186 to go back so that adds up to 744 Hope that helps!
PLEASE HELP ME I CAN'T FAIL THIS, JUST 2 QUESTIONS!!
What is the volume of the composite figure if both the height and the diameter of the cylinder are 3.5 feet? Give the exact answer and approximate to two decimal places.
Find the height in centimeters of a square pyramid with a volume of 455cm3 and a base edge length equal to the height. Give the approximate answer rounded to 2 decimal places.
PLEASE SHOW YOUR WORK
Reese's Puffs Reese's Puffs
a. eat em up, eat em up, eat em up, eat em up!
b. no-
Answer:
a
Step-by-step explanation:
common sense
Answer:
a
Step-by-step explanation:
Each triangular face of the following solid figure is congruent. If the area of each face is 12 square inches, what is the
surface area of the entire figure?
Answer:
the surface area is 48in^2 because there are 4 faces and you have to find the surface are in which you must multiply 12 by 4.
Step-by-step explanation:
A Biology teacher wants to see if there is any difference in the abilities of students enrolled in biology today and those enrolled five years ago. A sample of final examination scores from students enrolled today and from students enrolled five years ago was taken. You are given the following information. Today Five Years Ago 81 85 σ 14.5 8.5 n 81 36 The point estimate for the difference between the means of the two populations is
Answer:
The point estimate for the difference between the means of the two populations is x1`-x2`= 81-85=-4 where x1` is the mean of the of the first population and x2` is the mean of the second population.
Step-by-step explanation:
The data given is
Today Five Years Ago
X` 81 85
σ 14.5 8.5
n 81 36
The point estimate for the difference between the means of the two populations is x1`-x2`= 81-85=-4 where x1` is the mean of the of the first population and x2` is the mean of the second population.
The test statistics that will be used is
Z= x1-x2/ √σ₁²/ n₁ + σ₂²/n₂
Z= 81- 85/ √14.5² /81 + 8.5² /36
z= -4/√210.25/81+ 72.25/36
z= -4/2.1454
z= -1.8644
A sample of restaurants in a city shows that the average cost of an appetizer is $6.32 with a standard deviation of $0.47. A brand new restaurant wants to get noticed by offering appetizers for a much lower price. To determine the lower price, should the formula use a z-value that is greater than or less than -1?
a.
Greater than -1
c.
Greater than 1
b.
Less than -1
d.
Either way, it doesn’t matter
Answer:
D
Step-by-step explanation:
Is the corrext answer hope it helps
By using a z-value less than -1, we can find a price that is significantly lower than the average cost, and therefore more likely to attract customers.
Option B is the correct answer.
What is a standard deviation?Standard deviation is a measure of the amount of variability or spread in a set of data.
It is calculated as the square root of the variance and is often denoted by the symbol σ (sigma) for a population and s for a sample.
We have,
The z-value formula is used to determine the number of standard deviations a data point is from the mean.
To determine the lower price of appetizers, we want to find a price that is significantly lower than the average cost.
Since the new restaurant wants to offer appetizers for a much lower price, we should use a z-value that is less than -1, which indicates a price that is more than one standard deviation below the mean.
Recall that the z-value formula is:
z = (x - μ) / σ
where x is the value of interest, μ is the mean, and σ is the standard deviation.
Thus,
By using a z-value less than -1, we can find a price that is significantly lower than the average cost, and therefore more likely to attract customers.
Learn more about standard deviation here:
https://brainly.com/question/13905583
#SPJ3
Does anyone know how to find the volume of cylinders, cones and shapes? Any good videos/tips?
volumes of cone: V= TT ×R2 × H ÷ 3
Answer:
I believe for a cylinder the volume is the base times the height.
Step-by-step explanation:
this is just from my own head
Helpppp pleaseeee please pretty please NO LINKS OR I WILL REPORT YOU please give an explanation I will mark brainliest
Answer:
A: 88 square inches
Step-by-step explanation:
trust me
what are the answers for these two questions? please also tell me HOW you got that answer
9. Multiply the money he has by the portion he spent:
75 x 3/5 = (75 x3)/5 = 225/5 = 45
He spent $45
10. First rewrite 4 1/8 as an improper fraction
33/8
Now multiply by 1/3:
33/8 x 1/3 = (33 x1) /(8 x 3) = 33/24 = 1 3/8
She spent 1 3/8 hours studying math.
This is the first year Janis is playing softball. She has been practicing her batting. On her last swing the bat made an arc with a radius of 49 inches and swept
through 283 of rotation. Assuming the arc is circular, what is the distance the tip of the bat travels to the nearest inch?
Answer:
2*pi*49*283/360=242 (to the nearest inch)
the distance the tip of the bat travels 242 inches.
If anyone could anwser and give tips on how to solve more that would be great!
Answer:
A. (-4,5) is the answer to describe the set
What is the difference of -9 + 2i and 4 - 6i?
Answer:
-13-4i
Step-by-step explanation:
Which of the following is the solution to 9/x+ 4 54 ?
O A. x5-10 and x32
O B. x2-10 or x22
O c. xs-10 or x2 2
O D. x22
Im guessing its c. I dont really know if i'm wrong im sorry