Answer:
1/3 kg/m3
Step-by-step explanation:
density= mass/volume
mass=40 kg
volume=5m×8m×3m=120m³
density=40kg/120m³=1/3 kg/m³
Answer:
1/3 kg per cubic m or 0.33kg per cubic m
Step-by-step explanation:
density = mass
volume
= 40kg = 40kg
5m x 8m x 3m = 120cubic metres
= 1/3 kg per cubic m or 0.33 kg per cubic m
A roller coaster at an amusement park rises to a height of 196 feet above the ground. So far, it has risen 36% of this height. To estimate the height the roller coaster has risen so far, Jake did the following.
1. Rounded 36% to 40%
2. Rounded 196 to 200
3. 10% of 200 is 20
4. 20 (4) = 80
5. 36% of 196 is about 80
However, Jake’s estimate was too high by almost 10 feet. Why was his estimate off by so much?
He made a computation error.
He rounded the percent up to 40% and the number up to 200.
He made a rounding error, and should have rounded 196 down to 100.
He should have rounded the percent down to 30% and the number down to 190.
Answer:
Step-by-step explanation:
196*36%=70.56 feet
He rounded the percent to 40% and the number to 200.
Answer:
He rounded the percent up to 40% and the number up to 200.
Step-by-step explanation:
I got it right on my test
- a/6 + 7 = - 14*********************
Answer:
a=126
Step-by-step explanation:
Help please I am very confused
The sides of the triangle occur in a ratio of 4 : 7 : 2, so if x is some positive number, then we can write each side's length in terms of x as 4x, 7x, and 2x.
The perimeter is 299 yd, so
4x + 7x + 2x = 299 yd
13x = 299 yd
x = (299 yd) / 13
x = 23 yd
Then the sides of the triangle have lengths of
4x = 4 • 23 yd = 104 yd
7x = 7 • 23 yd = 161 yd
2x = 2 • 23 yd = 46 yd
"Median" here refers to the side length between the shortest and longest sides, so the answer would be 104 yd.
7 - 0.65r + 3 there is no options all you have to do is simplify
Answer:
What caused the differences in their behavior? The food coloring in cool water remained at the bottom of the container. ... The behavior of the food coloring was caused by the movement of heat through the water and the formation of convection currents. The warmer water is less dense, so it rises to the surface.
Step-by-step explanation:
Answer:
10 - .65r
Step-by-step explanation:
you just have to combine like terms, in this case the whole numbers. 7 + 3 = 10 so yup
Given that events A and B are independent with P(A)=0.3P(A)=0.3 and P(A\cap B)=0.216P(A∩B)=0.216, determine the value of P(B)P(B),
Answer:
0.72
i got it wrng and this was the correct answer
Step-by-step explanation:
what is value of this expression below when y=3
8y^2-y-8
Answer:
61
Step-by-step explanation:
8x3^2 -3-8
8x9-3-8
72-3-8
72-11
61
Mr. Smith had 262 markers in the art room. He threw away the markers that dried out, and now he has 99 markers. How many markers dried out?
Answer:
163
Step-by-step explanation:
262-99=163
Answer:163
Step-by-step explanation: subtract 262 and 99
1. There are 4 quarters in 1 dollar.
a) Shade 1 of a dollar.
2
1
a
+
b) How many cents are in
2
of a dollar?
NE
Help plss
Answer:
1) Shade 2.
2) 50 cents
Step-by-step explanation:
1/2 of a dollar is 2 so shade 2.
B) 50 cents.
Hope this helps Happy Thanksgiving !!!!!!,!
2. A set of barbells consist of red and blue discs. Discs with the same color have the same mass. Using a balance,
Lia found that 7 blue discs balance 1 red disc and a 5kg mass, while 2 blue discs and a red disc balance a 4kg
mass. Find the masses of the red and blue discs. (2kg, 1kg)
Let r be the mass of a red disc and b the mass of a blue disc.
7 blues have the same mass as 1 red along with a 5 kg mass, so
7b = r + 5
7b - r = 5
2 blues and 1 red have the same mass as a 4 kg mass, so
2b + r = 4
Solve for b and r . Notice that adding the equations together eliminates r :
(7b - r) + (2b + r) = 5 + 4
9b = 9
b = 1
Then
7 • 1 - r = 5
r = 7 - 5
r = 2
So each red disc has a mass of 2 kg, and each blue disc has a mass of 1 kg.
Factor x^3 - 6x^2 + 11x - 6 with steps shown
Factor the expression
3−2−52+5+6=0
Need help please!! Due tomorrow
Answer:
i got A but im not sure if its correct
I didn’t pay attention to class cause I had to make my sister lunch today can someone explain what that is ? I’ll give brainlest
Answer:
Definitely not a function.
Step-by-step explanation:
Answer:
Not a function.
Step-by-step explanation:
Its not a function because there are two outputs (i.e. when you draw a vertical line in the diagram, you cross over the curve to times)
A function has ONLY ONE INPUT AND OUTPUT.
Pressure is force divided by area calculate the force when the pressure is 18N/m^2
Answer:
hi
Step-by-step explanation:
1+1=2
Two triangles have the same height. The base of one
triangle is twice that of the other. Find the difference in
their areas.
[tex]\huge\underline{\overline{\mid{\bold{\red{ANSWER}}\mid}}}[/tex]
They both have same height,
let the height of both triangles be = x
let the base one triangle = y
then the base of another trainlgle = 2y
Area of triangle = 1/2 X B X H
Area of Triangle 1
[tex] \frac{1}{2} \times y \times x \\ = > \frac{xy}{2} [/tex]
Area of Triangle 2
[tex] \frac{1}{2} \times 2y \times x \\ = > \frac{2xy}{2} \\ = > xy[/tex]
Difference in the area =
[tex]xy - \frac{xy}{2} \\ = > \frac{2xy - xy}{2} \\ = > \frac{xy}{2} [/tex]
Hence Area of Triangle 1 is half the area of Triangle 2
Difference of 1/2 area.
Answer:
[tex]\huge\underline{\overline{\mid{\bold{\red{ANSWER}}\mid}}}∣ANSWER∣
They both have same height,
let the height of both triangles be = x
let the base one triangle = y
then the base of another trainlgle = 2y
Area of triangle = 1/2 X B X H
Area of Triangle 1
\begin{gathered} \frac{1}{2} \times y \times x \\ = > \frac{xy}{2} \end{gathered}21×y×x=>2xy
Area of Triangle 2
\begin{gathered} \frac{1}{2} \times 2y \times x \\ = > \frac{2xy}{2} \\ = > xy\end{gathered}21×2y×x=>22xy=>xy
Difference in the area =
\begin{gathered}xy - \frac{xy}{2} \\ = > \frac{2xy - xy}{2} \\ = > \frac{xy}{2} \end{gathered}xy−2xy=>22xy−xy=>2xy
Hence Area of Triangle 1 is half the area of Triangle 2
Difference of 1/2 area.
[/tex]
Step-by-step explanation:
side it
siso,;-):-(
what is the value of q in the equation 4/5q = 32
Answer:
40
Step-by-step explanation:
4/5 * q = 32
First you divide 4/5 by itself so you can eliminate it from the equation and then you have to divide 32 by 4/5 n when you do that you get 40. So q = 40.
(2x + 5x - 3) + (x + 3)
Answer:
8x
Step-by-step explanation:
Because you are adding the (x+3) there you can immediately you the association property to simplify
(2x + 5x + x) + (3 - 3)
8x + 0 =
8x
100 middle school students take a survey that asked them About there fruit Preferences 37 out of 100 students said they prefer pineapple to peaches how would you write this amount as a percentage
Answer:
37%
Step-by-step explanation:
First, we need to know that 1 student equals 1 percent.
If 37 students chose pineapple, than it would be 37%
(Some times, you have lets say... 75 students, so you would do 75, subtracted from 74 (Or one less), to get how much one student is.)
HELP Please!!!!!!! Asap
Answer:
bottom right is correct
Step-by-step explanation:
2/3 of a class are girls what is ratio girls to boys in the class
Answer:
2:1
Step-by-step explanation:
2:3=1:3
as product of extremes = product of means
(2)(3):(1)(3)
6:3
2:1
Sandra worked 6 hours on Wednesday, 5 hours on Thursday, and 4 hours on Friday. What is the mean number of hours she worked over the three-day period? A 2 h B 3 h C 4 h D 5 h
Answer:
The mean should be D. 5
Step-by-step explanation:
The mean means the average which in this order (4, 5, 6) The direct middle is 5, making it the average since there are only 3 numbers in the first place.
You can mark out A (2) and B (3) instantly because they are lower than any of beginning numbers, and it's not C (4) as 'mean' doesn not mean the lowest, which leaves you with D (5)
May I have brainliest please? :)
A bouquet contains 6 roses and 9 daisies. This represents 75% of the flowers in the bouquet. How many total flowers are in the bouquet? this is actually confusing me please help
Answer:
20 total flowers
Step-by-step explanation:
9+6=15.
20/4=5
5*3=15
The answer is 20 total flowers.
Jose needs $75 to pay for the monthly subscriptions for Hulu, Netflix,
Disney, and HBO GO. His mother agrees to pay him $5 an hour for raking
leaves in addition to his $10 allowance. What is the minimum number of
hours that Jose must rake leaves to earn enough money to pay for both
subscriptions?
Answer:13 hours
Step-by-step explanation:if you get paid your allowance then wrok for 13 hours-13x5=65+10=75
Zach needs a new pair of running shoes.The pair that he wants regularly sells for $129.If they are on sale for 24% off,how much will he pay in total if sales tax is 6.4%?
Answer:
$104.31
Step-by-step explanation:
First let's calculate the sale price of the shoes. If they are 24% off, that means they will be worth 76% of the initial price. So, we can multiply 76% by 129 to find the sale price:
129 * 0.76 = 98.04
The sale price is $98.04. To find the value of the sales tax, multiply the sale price by the percentage of the sales tax:
98.04 * 0.064 = 6.27456
The sales tax rounds to 6.27. Finally, to find the total price, add the value of the sales tax to the sale price:
98.04 + 6.27 = 104.31
The total price Zach will pay is $104.31.
Hope this helps :)
Describe the slope of the line then find the slope helpp plss :)
Answer:
Slope = -1
Step-by-step explanation:
Brainlist please
Answer:
Step-by-step explanation:
Once you have two points, you can describe the line with:
[tex]y = mx + b \\where\\\\m = \frac{y_2-y_1}{x_2-x_1}[/tex]
our two points are (-2, 3) and (3, -2)
calculate m:
[tex]m = \frac{3-(-2)}{-2-3} = \frac{5}{-5} = -1[/tex]
the slope is negative
(HELP!!) Please Factor Completely
What is the commutative and associative propertys?
Answer:
Commutative property: states that the order in which we multiply numbers does not change the product.
Associative property: states that you can add or multiply regardless of how the numbers are grouped (aka parenthesis).
⚠️⚠️PLEASE HELP!!!!!⚠️⚠️
For two weeks, the highest
temperature each day was
recorded in four different
cities. Lines l, m, n, and pare
graphs of the temperature
over time in Lubbock,
Memphis, New Orleans, and
Phoenix. Which statement is
true?
m
n
temperature (degrees)
p
time passed (days)
A. The high temperature in Lubbock increased as time passed.
B. The high temperature in Memphis decreased steadily.
C. Initially, the high temperature was warmer in Phoenix than in Memphis.
D. The high temperature in Phoenix rose faster than the temperature in New Orleans.
Answer: B : The high temperature in Memphis decreased steadily.
Step-by-step explanation:
ASAP can someone help me solve this problem
Answer:
Step-by-step explanation:
x° + y° = 180°
2y° - 0.5x° = 180°
y° = 108°
x° = 72°
What is 1872.072 rounded to the nearest hundredth?
Answer:
1872.07
Step-by-step explanation:
The hundredth place is the second digit after the decimal (.).
The 1872 will always be the same since it is hundredth and not something else like tens or hundreds.
1872....
So since the hundredth place is the second digit after the decimal, you can find that the second digit is 7.
4 or less don't round up, 5 or more round up
Since the next digit is 2, it is 4 or less, so don't round up, so you cut off the 2, hence the 1872.07
EDIT: Aha I need my sense of humor back... brb
Answer: 1872.07
Step-by-step explanation: 7 is in hundredth place so we take the number that comes after it and round up or down since it 2 we round down to 0 then add it to 7.
7+0= 7 so 7 stays the same (because numbers from 1-4 round to zero and numbers from 5/9 round to 1)
4x^4 + 9x^3 - 3x^2 - 18x - 10