Answer:
surface area of rectangular prisms A=2(wl+hl+hw)
surface area of cubes A=[tex]6a^{2}[/tex]
Step-by-step explanation:
Answer:
The total surface area of a rectangular prism or cube is equal to the sum of the areas of each side.
The area of each side is equal to its length multiplied by its width or A = L x W.
Since the areas of opposite sides are equal, multiple each side area by 2 to obtain the areas of opposite sides.
where:
L = length
W = width
H = height
total area = (2)(L)(W) + (2)(L)(H) + (2)(W)(H)
or simplified:
total area = 2[(L)(W) + (L)(H) + (W)(H)]
Are 2x + 5 = 9 and -2x = 4 equivalent to each other
There are not equivalent to each other because the equation 2x+5=9 is equivalent to 2x=4
Answer: no.
Step-by-step explanation: 2x + 5 = 9 so subtract 5 from each side you get 2x = 4
X= 2
If we substitute that back in 2(2) + 5 = 9 so
If you do -2(2) = 4 it’s -4=4 and it’s not equivalent to each other
Because the statement is not correct.
This is the whole picture can someone help??
Step-by-step explanation:
I can't see good the picture
what is the solution to these equations y= 2x +1 and x +2y= 27
Answer:
The first one is -1/2
the second one is x+2y-27=0
Quadratic Transformations 2 (photo down bellow)
Answer:
The figure below is the graph of this basic function. Graph of y=x^2.
2) Christmas is on its way, so the price of a box of Thornton's chocolates has been increased
by 15%!! A box of Thornton's Continental now costs £17.25. How much did it cost
originally?
Bobbie invested $140 from her birthday money. She earned a simple interest of 3% per year on
her investment. What was the amount of interest Bobbie received at the end of two years?
Answer:
bobbie recieved the interest of $8.40 per year
Step-by-step explanation:
140 x .03 = $4.20
$4.20 per year
2 x 4.20 = 8.40
(15 points!!) Valerie is making fruit salad using strawberries and melons. The ratio of strawberries to melons is 3:4. If Valerie makes 14 cups of fruit for a party, how many cups of strawberries does she use?
The ratio shows how many times one value is contained in another value.
The number of cups of strawberries Valerie used is 6 cups.
What is a ratio?The ratio shows how many times one value is contained in another value.
Example:
There are 3 apples and 2 oranges in a basket.
The ratio of apples to oranges is 3:2 or 3/2.
We have,
The ratio of strawberries to melons is 3:4.
Let us consider,
Strawberries = 3x
Melons = 4x
Now,
A total of 14 cups of fruit were made.
This means,
14 = 3x + 4x
14 = 7x
x = 2
Now,
The number of cups of strawberries is 3x.
3x = 3 x 2 = 6 cups
The number of cups of melons is 4x.
4x = 4 x 2 = 8 cups.
We see that,
6 cups + 8 cups = 14 cups.
Thus,
The number of cups of strawberries Valerie used is 6 cups.
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A bicycle wheel has a circumference of 62 inches. Find the diameter of the wheel. If necessary, round to the tenths place. 39.5 inches 19.7 inches 15.5 inches 9.9 inches
Answer:
19.7
Step-by-step explanation:
Answer:
19.7
Step-by-step explanation:
Evaluate the expression: 103
Answer: 100+0+3
Step-by-step explanation:
A hard-boiled egg is removed from a pot of hot water and set on the table to cool. The rate of change of the egg’s temperature T with respect to time t is proportional to the difference between the egg’s temperature in degrees Fahrenheit ( °F) and the room temperature of 75°F. Which of the following is a differential equation that describes this relationship, where k is a constant?
Answer:
dT/dt = k(T-75)
Step-by-step explanation:
dT/dt = the rate of change of the egg's temperature T with respect to time t
k = constant
(T-75) = difference between the egg's temperature and the room temperature 75 degree
The relationship between the temperature of the egg and that of the room is dT/dt = k(T-75).
From the Newton's law of cooling, the rate of cooling of any object depends on the temperature difference between the object and the surroundings. This is usually expressed in a differential equation.
In this particular instant, the differential equation that shows the relationship between the temperature of the egg and that of the room is dT/dt = k(T-75).
Learn more about Newton's law of cooling:https://brainly.com/question/15574522
please please please help i am desperate
‼️WILL MARK BRAINLIEST‼️
20 POINTS
1. Find the distance from Alanah's house to Mia's house. Show your work.
2. What is the distance from Mia's house to Teresa's house? Explain how you found this distance.
3. Find the distance from Teresa's house to the arena. Show your work.
4. What is the total distance of Alanah's trip to the arena?
Mia's house is located at point (3, 2) on a coordinate plane. I don't know 2,3,4. :(
find the unit rate and show work
289 miles on 10 gallons
Answer:
28.9 miles per gallon
Step-by-step explanation:
unit rate is usually something per something. Like miles per hour. In this case we have mile per gallon. MPG.
Unit rate is basically A number X per 1 of something.
so in this cares X per gallon.
we want 10 gallons to go to 1 gallon. So we divide by 10 to get to 1. But if we divide by 10 on one side, we have to do it to the other side. so 289/10=28.9
so our final answer is:
28.9 miles per gallon
A car travels 2 5 8miles in 3 1 2minutes at a constant speed. Write an equation to represent the distance, d, that the car travels in m minutes.
Answer:
258/312
Step-by-step explanation:
PLEASE WHAT IS THE AREA OF THIS HELP ME PLEASE
Answer:
it should be 14,580 m^2
(the ^2 means squared btw)
OMG HELP ME THIS IS MULTI-CHOISE PLEASEEEEEEEEEEEEEEEEEEEEEEEE
Which choices are correct when determining the distance between −56 and 44?
A) The distance is 12 units.
B) The distance is 100 units.
C) distance = |−56 + 44|
D) distance = |−56 − 44| E) distance = −|−56 + 44|
Answer:
the answer is D i hope this helps!
Answer:
Step-by-step explanation:
the distance between those 2 points will be the absolute value
in this case
56+44=100 units
D is also a choice
Find area of circle
Answer:
it should be 16
Step-by-step explanation:
1. Find the sum of the measures of the interior angles of a regular 16-gon.
A.2848
B.2520
C.2888
D.3240
Answer:
B. 2520 degrees.
Step-by-step explanation:
Sum of interior angles = 180(n - 2)
= 180(16-2)
= 2520 degrees.
Please anyone help me on this
The model represents the factorization of 2x2+5x+3.
What are the factors of the polynomial?
Answer:
(2x+3)(x+1)
Step-by-step explanation:
Can you please hely me and tell me if my answer is right
Answer:
x = (8√3)/3
Step-by-step explanation:
Reference angle = 30°
Hypotenuse = x
Side length adjacent to reference angle = 4
Apply CAH, thus:
Cos 30 = Adj/Hyp
Cos 30 = 4/x
x × Cos 30 = 4
x = 4/Cos 30
x = 4/(√3/2) (cos 30 = √3/2)
x = 4 × 2/√3
x = 8/√3
Rationalize
x = (8 × √3)/(√3 × √3)
x = (8√3)/3
PLEASE ANSWER THIS QUESTION CORRECTLY, I’LL GIVE YOU BRANLIEST!It’d be amazing if you could answer my other math questions if you solve this one, thank you.
Answer:
4, 16
Step-by-step explanation:
[tex] a_n = 3a_{n - 2} - a_{n - 1} - 1 [/tex]
Let's see if it works for a_3:
[tex] a_3 = 3a_{1} - a_{2} - 1 [/tex]
[tex] a_3 = 3(3) - (4) - 1 [/tex]
[tex] a_3 = 4 [/tex]
Yes, it works for a_3.
Now let's calculate a_4.
[tex] a_4 = 3a_{2} - a_{3} - 1 [/tex]
[tex] a_4 = 3(4) - (4) - 1 [/tex]
[tex] a_4 = 7 [/tex]
a_4 is also correct.
Let's calculate a_5.
[tex] a_5 = 3a_{3} - a_{4} - 1 [/tex]
[tex] a_5 = 3(4) - 7 - 1 [/tex]
[tex] a_5 = 4 [/tex]
Let's calculate a_6.
[tex] a_6 = 3a_{4} - a_{5} - 1 [/tex]
[tex] a_6 = 3(7) - 4 - 1 [/tex]
[tex] a_6 = 16 [/tex]
Answer: 4, 16
Can somebody give me the answer to this problem ill mark you i promise!!
Answer:
half
Step-by-step explanation:
I got this answer by doing (22/7-2/3) and (22/7-2/3)/2 and comparing the results.
(22/7-2/3) = 52/21, which is about 2.47.
(22/7 - 2/3)/2 = 26/21, which is about 1.23.
With this, you can conclude that it would be half the value.
7-3/7 what is the answer plz help me
Answer:
6.571429, it can also be written as 46/7
what is x in this problem (2x-2)/x-3=5/6
Answer:
x = -3/7
Step-by-step explanation:
(2x-2)/x-3 = 5/6
(2x-2)×6 = 5×(x-3)
12x-12 = 5x-15
12x-5x = -15+12
7x = -3
x = -3/7
Final answer x is equal to -3/7.
Vashti and Stacy measure the width of the gym at their school. It is 17 yards wide.
[Hint: There are 36 inches in 1 yard.]
Part A
column first. Vashti writes the partial
3 by the tens column first.
Stacy is finding the width of the gym, in inches, by adding the partial products of
17 x 36. She finds three of the partial products. Which statement explains
the partial product Stacy is missing?
Which explanation correctly describe
the same or different?
Width of the gym = 42 + 60 + 300+?
Stacy and Vashti's products w
products can be added in any
Stacy is missing the partial product, 21, because she still needs to find
3 ones x 7 ones.
Stacy and Vashti's products we
products have to be multiplied
factors in the wrong order, so s
Vashti.
Stacy is missing the partial product, 210, because she still needs to
find 3 tens x 7 ones.
Stacy is missing the partial product, 600, because she still needs to
find 6 tens x 1 ten
Stacy and Vashti's products wo
products have to be multiplied f
factors in the wrong order, sos!
Stacy
3
5
Do u know who to rea cause I don't T-T
Answer:highlight throw that tomato
Step-by-step explanation:
hey yall one more
y-(-99)=4
find x please
Answer:
67766788786686
Step-by-step explanation:
86686868686867
Answer:
-95
Step-by-step explanation:
HELP BRAINLIEST TO WHO EVER CAN ANSWER THIS QUICK!!!!!!!
The graph shows a line and two similar triangles.
What is the equation of the line?
y = three-halves x
y = two-thirds x
y = 3 x
y = 2 x
Answer:
y = two-thirds xStep-by-step explanation:
Corresponding sides should have same ratio:
y/x = 2/3Solve for y:
y = 2/3xCorrect choice is B
CALCULATE THE EXACT VALUE OF
3 ⅕ -⅔ divided by 2 ⅘
Answer: 19/21 or 0.90 rounded
Step-by-step explanation
First step: subtract 2/3 from 3 1/5 which equals 2 8/15
Second step is divide 2 8/15 by 2 4/5 which equals 19/21
DeAndre’s laptop downloads a 9 GB (gigabyte) file in 15 seconds. It takes Cheryl’s laptop 80 seconds to download a 32 GB file. Whose laptop downloads files at a faster rate?
Answer:
Step-by-step explanation:
9gb/15s=0.6gb/s
32gb/80s=0.4gb/s
DeAndre laptop is faster.
wow his computer is really fast
We have that The laptop that downloads files at a faster rate is Cheryl’s laptop
Y=0.4GB/s
From the question we are told that
9 GB (gigabyte) file in 15 seconds.
Cheryl’s laptop 80 seconds to download a 32 GB file.
Generally the equation for the is mathematically given as
The rate of transfer for DeAndre’s is
X=\frac{9}{15}
X=0.6GB/s
The rate of transfer for Cheryl’s
[tex]Y=\frac{32}{80}\\\\Y=0.4GB/s[/tex]
Therefore
The laptop that downloads files at a faster rate is Cheryl’s laptop
Y=0.4GB/s
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