Answers
Related Questions
a rectangular box of mass 40 kg has a length of 5m and a width of 8m and a height of 3 m find its density in kg/m3
Answers
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
Please help! due today!
Answers
Answer:
A
Step-by-step explanation:
Use pythagorean theorem: a^2+b^2=c^2
12^2+x^2=13^2
144+x^2=169
x^2=25
x=5
HTH :)
A line passes through the point (-8,-9) and has a slope of -3/4, write an equation in slope intercept form for this line
Answers
Plug in (-8,-9) to find b
-9 = -3/4(-8) + b
-9 = 6 + b, b = -15
Equation: y = -3/4x - 15
3(4a + 2) = 2(a - 2)?
Answers
Answer:
A= -1
Step-by-step explanation:
-3y-2=7 what is the value of y
Answers
Answer:
y = -3
Step-by-step explanation:
Add 2 to each side to isolate the -3y. Doing this leaves you with -3y=9. You then divide each side leaving you with y = -3
Answer:
The equation has one solution at which y = -3.
Step-by-step explanation:
To find the value of y, we need to isolate it from the rest of the equation.
Add 2 to both sides of the equation.Divide by -3 on both sides of the equation.Simplify the equation if necessary.[tex]\displaystyle{-3y-2=7}\\\\-3y = 9\\\\\bold{y = -3}[/tex]
We can check to make sure that y = -3 by substitution.
[tex]\displaystyle{-3(-3)-2 = 7}\\\\9-2=7\\\\7= 7 \ \checkmark[/tex]
Because we got a true statement, we can determine that y = -3.
The selling price of a car is $18,000. Each year, it loses 15% of its value. Find the exponential function that gives the value of the car t years after its purchase. Write your answer in the form f(t)=a(b)t.
Answers
Answer:
f(t)=18,000(0.85)^t
Step-by-step explanation:
18,000 is the a value, and since it is depreciating 15% becomes -.15
so we are going to set it up like f(t)=18,000(1-0.15)^t
Final answer is f(t)=18,000(0.85)^t
The exponential function that gives the value of the car t years after its purchase is f(t) = $18,000(0.85^t).
What is the exponential function that represents the value of the car?
The car would cost less with the passage of time. This is because it loses its value with the passage of time.
The formula that can be used to determine the value of the car is:
FV = P (1 - r)^n
FV = Future value P = Present value R =rate of decline in valueN = number of yearsf(t) = $18,000 x (1 - 0.15^t)
f(t) = $18,000(0.85^t)
To learn more about exponential function, please check: https://brainly.com/question/18760477
pls help with this division
Answers
x^2+3x+6
Step-by-step explanation:
this is the answer I got for some reason it is not an option on your question
a truck that can carry no more than 6200 pounds is being used to transport refrigerators and upright pianos eat refrigerator weighs 250 pounds in each piano weighs 425 pounds right and graph an inequality to show how many refrigerators and how many pianos the truck carry what 11 refrigerators and eight panels overloaded truck explain let X the number of refrigerators in the truck y the number of pianos in the truck right in any quality to show how many refrigerators and how many pianos the truck carry
Answers
Answer:
sorry i just need points but ya
Step-by-step explanation:
S.
If the selling price of an article is
4/5th of its cost price, find the loss percent
Answers
Answer:
1-4/5
Step-by-step explanation:
Answer:
20%
Step-by-step explanation:
4/5 = 80
80 is the price percentage.
5/5 - 4/5 = 1/5
1/5 = 20
so, 20%
can anyone help ?\me with this algebra answer
Answers
Answer:
B) 2x-y=5
Step-by-step explanation:
Info we have:
The x-intercept is 2.5
The slope is 2/1=2
Therefore, our equation so far is y=2x+b
We plug in our x-intercept in and make y=0 to get b:
0=2(2.5)+b
0=5+b
-5=b
Therefore, the equation of the line is y=2x-5
Given our found equation, we can see which option works.
A is wrong because 2x+y=-5 -> y=-5-2x -> y=-2x-5
B is right because 2x-y=5 -> -y=5-2x -> y=-5+2x -> y=2x-5
C is wrong because x+2y=-5 -> 2y=-5-x -> y=-2.5-1/2x -> y=-1/2x-2.5
D is wrong because 2y-x=10 -> 2y=10+x -> y=5+1/2x -> y=1/2x+5
Giovanni justifies whether the expression -4x-8 is equivalent to -2(x+1)-2(x+3) by letting x=3 in both expressions. What is the value of each expression when x=3.
3 and -20
4 and 4
-20 and -20
3 and 4
Answers
Answer:
The value of each expression when x=3 will be -20 and -20.
Step-by-step explanation:
Given the expression
-4x-8
setting x=3
= -4(3)-8
=-12-8
=-20
Given the expression
-2(x+1)-2(x+3)
setting x=3
=-2(3+1)-2(3+3)
=-2(4)-2(6)
=-8-12
=-20
so we conclude that the value of both the expressions was -20 when we substituted the value x=3.
Therefore, the value of each expression when x=3 will be -20 and -20.
jared needs to drill holes 2 1/4 inches apart in a 36 inch section of his garage. which expression can he use to figure out the number of holes he will need to drill
Answers
Answer: 36 / 2 1/4
Step-by-step explanation:
From the question, we are informed that Jared needs to drill holes 2 1/4 inches apart in a 36 inch section of his garage. The expression that he can use to figure out the number of holes he will need to drill will be:
= 36 ÷ 2 1/4
From the expression we can then calculate the number of hours to drill. This will be:
= 36 / 2 1/4
= 36 / 9/4
= 36 × 4/9
= 16
He'll need to drill 16 holes
Answer:
18c
= 18(36)
= 648
Step-by-step explanation:
i hope this helps and im on edmentum
please help, thank you
-4w – 4 = 8, w = ?
Answers
Answer:
-3
Step-by-step explanation:
Answer:
w = -3
Step-by-step explanation:
-4w - 4 = 8 (add 4 on both sides)
-4w = 12 (divide by -4 on both sides)
w = -3
Hope this helps!!
PLZ ANSWER !! DUE ASAP PLS
Answers
Answer: - 8/5
Step-by-step explanation:
M1*M2=-1
Substuting M1 as 5/8
We get
5/8*M2=-1
M2=-8/5
If y = –2 whenx
1, find xwhen y = 4
Answers
Answer:
x=-1/2 decimal form -0.5
Step-by-step explanation:
Multiply -2 and 1 then divide by 4,-2/4. x = −1 /2
What is the domain and range please?
Answers
Domain: all real number
Range: y = 3
How many ? Help me as soon as possible
Answers
Answer:
3 meters
Step-by-step explanation:
Distance covered in 1 second
[tex] = \frac{7.5}{2.5} \\ \\ = 3 \: m[/tex]
estimate 12/26 + 6/11
Answers
Answer:
12/26 + 6/11 = 12+6/11 ............
The point P(x,y) lies in the terminal side of an angle theta= -60° in standard position. What are the signs of the values of x and y?
Answers
Answer:
Step-by-step explanation:
x is positive and y is negative
Answer:
(x,-y)
Step-by-step explanation:
Solve for x. Round your answer to the nearest tenth if necessary.
Answers
Answer:
69.7
Step-by-step explanation:
[tex]x^{2} + 6^{2} = 70^{2}\\x^{2} + 36 = 4,900\\4,900 - 36 = 4,864\\\sqrt{4,864}\\69.7 = x[/tex]
A health club charges $35 a month for membership fees. Determine whether the cost of membership is proportional to the number of months.
Answers
Answer:
I think that it is proportional
Step-by-step explanation:
A watercooler contains 160 cups of water. During practice, each person on a team fills a water bottle with 3 1/3 cups of water from the cooler. How many water bottles can a team fill from a single watercooler?
Answers
Answer: Number of water bottles a team can fill from a single watercooler = 48
Step-by-step explanation:
Given: A watercooler contains 160 cups of water.
Each person on a team fills a water bottle with [tex]3\dfrac13[/tex] cups of water from the cooler.
Here, [tex]3\dfrac13=\dfrac{10}{3}[/tex]
Now , Number of water bottles a team can fill from a single watercooler = [tex]160\div \dfrac {10}3[/tex]
[tex]=160\times\dfrac3{10}\\\\=16\times3=48[/tex]
Hence, Number of water bottles a team can fill from a single watercooler = 48
Number of water bottle IT team can feel a single watercooler =48
help ASAP!!!!!!!! AHSHJABDJA
Answers
b) 2.8204 x 10^11
The vehicle's fuel efficiency is at least 35 miles per gallon.
Use f to represent the vehicle's fuel efficiency (in miles per gallon).
Answers
Answer:
f ≥ 35
Step-by-step explanation:
Took the test on Aleks, it was right! :)
Solve the following system of equations using the elimination method. 9x – 5y = –16 and –3x + 7y = –16
A)
(–4,–4)
B)
(–2,–3)
C)
(4,4)
D)
(0,–5)
Answers
Answer (-2,-3)
Step-by-te exnation:
multiply the equation by number
What is the equation written in vertex form of a parabola with a vertex of (5, 7) that passes through (2, -2)?
Answers
Answer:
y = - (x - 5)² + 7Step-by-step explanation:
y = a(x - h)² + k - vertex form of the equation of the parabola with vertex (h, k)
So the equation of the parabola with vertex (5, 7):
y = a(x - 5)² + 7
The parabola passes through point (2, -2) so if x=2 then y=-2
- 2 = a(2 - 5)² + 7
- 2 -7 = a(-3)² + 7 -7
- 9 = 9a
a = - 1
So, the equation written in vertex form of a parabola with a vertex of (5, 7) that passes through (2, -2):
y = - 1(x - 5)² + 7
if a dog can eat one thirds of a bag of food in 1/2 a week how many bags of food can the dog eat in one week
Answers
Answer:
Two thirds of a bag.
Step-by-step explanation:
1/2 * 2 = 1
1/3 * 2 = 2/3
Hope this helped!
Will give brainliest if correct.
Answers
Answer:
Step-by-step explanation:
a. $7.
b. $1x.
c. $20.
d. $5y.
e. $1x + $5y.
I hope this helps, sorry if I am incorrect. Have a nice day!
I need to know this ASAP. I will give you 25 Points and a brainly crown thing.
Answers
Answer:
The answer is C.
Step-by-step explanation:
Mrs. Daniels recorded the weights of nine boxes of strawberries in her booth at a farmer's market. The weights of the boxes
shown.
2
What is the average weight, in pounds, of the boxes of strawberries?
OB.
OA 13 pounds
1 pounds
OC. 2 pounds
OD. 2, pounds
Reset
Next
Answers
Answer:
The answer is C. 2 pounds
Step-by-step explanation:
Add all the numbers up and then divide by the numbers of sets. The average is the same as the mean.
This is for the ones on Plato