Evaluate 2n - 3 for n = 5.
Answers
Answer:
7
Step-by-step explanation:
2n - 3
n = 5
Substitute in the given value and solve
2(5) - 3
10 - 3
7
Related Questions
which pair of numbers has a lcm of 12
1 and 6
2 and 3
2 and 6
3 and 4
Answers
Answer:
3 and 4
and
2 and 6
Step-by-step explanation:
3×4=12
2×6=12
Answer:
3 and 4
2 and 6
Step-by-step explanation:
what point below is the solution to the expression 2x+y=12
A) (4,2) C) (8,-1)
B) (3,6) D) (0,6)
Answers
Answer:
Step-by-step explanation:
It's B.
Let's rewrite the expression like this :
2x+y=12 ⇒ y=12-2x
and try given values for x :
if x=4 ⇒ y=12-(2×4)=12-8=4 ( so it is not 2 ) ⇒ wrong if x=3 ⇒ y=12-(2×3)=12-6=6 (it is 6) ⇒ right if x=8 ⇒ y=12-(2×8)=12-16=-4 (so it is not -1) ⇒ wrong if x=0 ⇒ y=12-(2×0)=12-0=12 (so it is not 6) ⇒ wrongcan someone helppp withh thiss
Answers
=24+3-1
=26
okay the answer is 26
Step-by-step explanation:
(6 TIMES 4 PLUS 23 MINUS 1)
Please help 25 points
Answers
Answer:the answer is 36
Step-by-step explanation:i just guessed
A function with an input of 1 has and output of 3. Which of the following could NOT be the function equation?
1. y= 3x
2. y= x+2
3. y= 4x-3
4. y= 4x-1
Answers
Answer:
The answer is 3
y=4x-3❌
Step-by-step explanation:
1)y=3x=3(1)=3✅
2)y=x+2=1+2=3✅
3)y=4x-3=4-3=1❌
4)y=4x-1=4-1=3✅
Please help i have no idea how to do this.
Answers
( please mark brainliest )
What is the density of lead if a cube measuring 2 cm per side has a mass of 90.8 g?
Answers
Answer:
8.1 g/cm
3
Explanation:
Density is equal to mass divided by volume. You are given a mass of
64.7
grams. You can find the volume of the cube by doing height multiplied by width multiplied by depth.
Because all of the sides of a cube are the same length, the volume just ends up being
2
3
.
(
2 cm
)
3
=
8 cm
3
Now plug both of those numbers into your density equation
ρ
=
m
V
=
64.7 g
8 cm
3
=
8.1 g/cm
3
Step-by-step explanation:
Answer:
8,1 g / cm
3
Explicación:
La densidad es igual a la masa dividida por el volumen. Se le da una masa de
64,7
gramos. Puede encontrar el volumen del cubo multiplicando la altura por el ancho por la profundidad.
Como todos los lados de un cubo tienen la misma longitud, el volumen acaba siendo
2
3
Step-by-step explanation:
Which expression is equivalent to twice b plus the sum of 2 and b?
Answers
Must answer correctly don't put something random for points or getting reported
You have recently purchased a new backpack as show in the picture. The main section of the backpack is made of a rectangle gular prism. Use the diagram to find the volume of your new backpack, then explain how u calculated the answer. Use the pictures with the formulas to help also use the sentence starters.
Sentence Starters:
The volume of the large rectangular prism (the bottom part of the backpack) is __inᶾ.
The volume of the pocket, which is also a rectangular prism is _____ inᶾ.
The volume of the half cylinder, which is the top curve of the backpack, is _____ inᶾ.
When you add all three of these together, you get the total volume of _____ inᶾ.
Hint: Find the volume of each shape; there are 3 of them; two rectangular prisms and half of a cylinder, and then add all 3 of them together. For the cylinder, you only need half, so find the volume of the whole cylinder then divide it by 2 for half. )
Answers
Answer:
Main part of backpack V = 840 inᶾ
Front pocket of backpack V = 64 inᶾ
Top curve of the backpack V = 395.8406744 inᶾ
Total V = 1299.840674 inᶾ
Step-by-step explanation:
1.
As we know, the formula for the volume of a rectangular prism is width x height x length (V = whl). We will use this formula to find the volume of the large rectangular prism (bottom part of the backpack) and the volume of the smaller rectangular prism (the pocket). As for the cylinder, we know the formula for the volume of a cylindrical prism is pi x radius squared x height (V = πr^2h). We will use this formula to find the volume of the half cylinder (top curve of the backpack).
2.
For the large rectangular prism (main part of the backpack), we are given:
w = 7in
h = 10in
l = 12in
Now let's incorporate our formula for the volume of a rectangular prism into this situation.
V = whl
V = 7 x 10 x 12
V = 840 inᶾ
3.
Now for the smaller rectangular prism (front pocket of backpack), we are given:
w = 2in
h = 4in
l = 8in
Now let's incorporate our formula for the volume of a rectangular prism into this situation.
V = whl
V = 2 x 4 x 8
V = 64 inᶾ
4.
Now to calculate volume for the half cylinder (top curve of the backpack), we must first imagine that this is a full, circular cylinder. We are given:
r = 6in
h (which will be the same as the width of the backpack in this case scenario) = 7in
Now let's incorporate our formula for the volume of a rectangular prism into this situation.
V* = πr^2h
V* = π x 6^2 x 7
V* = 791.6813487 inᶾ (round this number if you must)
Now that we have the volume of a whole cylinder, we can halve it (divide by two) since we only need half of the cylinder.
V = V*/2
V = 791.6813487/2
V = 395.8406744 inᶾ (round this number if you must)
5.
Finally, we can add our volumes together to acquire the volume of the backpack as a whole!
Large rectangular prism (bottom part of the backpack) + Smaller rectangular prism (the pocket) + Half cylinder (top curve of the backpack) = Total Volume (Whole backpack)
Recall that:
Large rectangular prism (bottom part of the backpack) = 840 inᶾ
Smaller rectangular prism (the pocket) = 64 inᶾ
Half cylinder (top curve of the backpack) = 395.8406744 inᶾ
So:
Total Volume (Whole backpack) = 840 inᶾ + 64 inᶾ + 395.8406744 inᶾ
Total Volume (Whole backpack) = 1299.840674 inᶾ (round this number if you must)
Add 2 1/2+(−1/3) . Write your answer as a mixed number in simplest form.
Answers
Answer:
2 2/3
Step-by-step explanation:
Answer:
2.16
Step-by-step explanation:
What decimal is equivalent to 3%?
a
3.0
b
.003
c
.3
d
.03
Answers
Answer:
D
Step-by-step explanation:
Percent is out of a hundred.
3%=3/100 which is .03
Rewrite the equation below so that it does not have fractions.
Answers
Answer:
Step-by-step explanation:
\(2-\frac{3}{4}x =\frac{2}{5}\\8-3x=\frac{8}{5}\\40-15x=8\)
I simply multiplied the equation on both sides by the denominators of each fraction to get whole numbers. You can also do this by multiplying by 20, since the product of the denominators is 20 and will guarantee to create a numerator that creates a fraction that is also a whole number.
20(3/4)=60/4=15
20(2/5)=40/5=8
20(2)=40
Answer:2-.75x=.40
Step-by-step explanation:
Infinitely many quadratic equations of the form ax^2 + bx + c = 0 can have the same two solutions. Sketch the graphs of two quadratic functions on the same grid to show how this could be true.
(picture)
Answers
Infinitely many quadratic equations of the form ax² + bx + c = 0 can have the same two solutions. Sketch the graphs of two quadratic functions on the same grid to show how this could be true.
2.Draw a diagram to represent each of these situations. Then write an addition expression that represents the final temperature.
Answers
You're at a clothing store that dyes your clothes while you wait. The store offers 444 different articles of clothing and 333 colors.
If you randomly choose the article of clothing and the color, which of these diagrams can be used to find all of the possible outcomes?
Choose all answers that apply:
Answers
Answer:
B
Step-by-step explanation:
I'm really not sure how to explain this.
what is 3/5 - 2/6
pls i need help ;_;
Answers
Choose the three equivalent forms of 4.625.
four and five eighths, 462.5%, thirty seven eighths
four and six twenty fifths, 4.625%, thirty seven eighths
four and five eighths, 4.625%, forty five eighths
four and six twenty fifths, 462.5%, forty five eighths
Answers
Answer:
Step-by-step explanation:
4.625%- percents and decimals are the same
four and five eighths- five divided by eight is (.625) and 4+ (.625) is 4.625
thirty seven eighths- 37 divided by 8 is 4.625
How much time is needed for a boy on roller skates to slow down from 17.4
m/s to 9.11 m/s if he covers 45.0 m?
Answers
Answer:
Step-by-step explanation:
v²-u²=2as
9.11²-17.4²=2a×45
a=-(17.4²-9.11²)/90=-(302.76-82.9921)/90=-219.7679/90 m/s²
v=u+at
9.11=17.4-219.7679/90 t
9.11-17.4=-219.7679/90t
-8.29×90=-219.7679t
t=-746.1/-219.7679≈3.395 s
Fill in the blank with the correct number.
A number is divisible by _________ if the sum of its digits is divisibly by three.
A.) 2
B.) 3
C.) 9
D.) Both 3 and 9
Answers
Answer:D
Step-by-step explanation:
Please helpp!! Ty ty!♡♡
Answers
Answer:
25
Step-by-step explanation:
4a +12 -2c + c
4( ) + 12 - 2( ) + ( )
4(4) + 12 - 2(3) + 3
16 + 12 - 6 + 3
28 - 6 + 3
22 + 3
25
Helping in the name of Jesus.
Therefore, 4a + 12 - 2c + c = 25
Step-by-step explanation:a = 4
c = 3
Swap letters for numbers:4a + 12 - 2c + c
(4)(4) + 12 - (2)(3) + 3
16 + 12 - (2)(3) + 3
28 - (2)(3) + 3
28 - 6 + 3
22 + 3 = 25
Draw a conclusion:
Hence your answer is:4a + 12 - 2c + c = 25
I hope this helps!
What is -4/7 divided by 5?
Answers
Answer:
-4/35
Step-by-step explanation:
Can someone pleasee help me asap
Answers
Answer:
9ft is 2nd answer
1st is 100in
can pretty please help me with 2 math question its due today
Answers
(4x + 12 ) - ( -8 ) =
4x + 20
Explanation:
Just add them up and form a equation ( this is for the second one )
hope this helps
The stem-and-leaf plot displays data collected on the size of 15 classes at two different schools.
Mountain View School Seaside School
0 5, 8
9, 8, 2, 0 1 0, 1, 2, 5, 6, 8
8, 7, 6, 5, 5, 4, 4, 3, 1, 0 2 5, 5, 7, 7, 8
0 3 0, 6
Key: 2 | 1 | 0 means 12 for Mountain View and 10 for Seaside
Part A: Calculate the measures of center. Show all work. (2 points)
Part B: Calculate the measures of variability. Show all work. (1 point)
Part C: If you are interested in a smaller class size, which school is a better choice for you? Explain your reasoning. (1 point)
Answers
For Mountain View School:
Data: 0, 0, 0, 0, 1, 2, 3, 4, 4, 5, 5, 5, 5, 6, 7, 8, 8, 8, 9
Mean: (0 + 0 + 0 + 0 + 1 + 2 + 3 + 4 + 4 + 5 + 5 + 5 + 5 + 6 + 7 + 8 + 8 + 8 + 9) / 19
= 100 / 19
≈ 5.26
To find the median, we need to arrange the data in ascending order: 0, 0, 0, 0, 1, 2, 3, 4, 4, 5, 5, 5, 5, 6, 7, 8, 8, 8, 9.
The median is the middle value, which is the 10th value in this case.
Median: 5
For Seaside School:
Data: 0, 0, 0, 1, 1, 2, 2, 4, 5, 5, 5, 5, 6, 7, 7, 8, 8, 8, 9
Mean: (0 + 0 + 0 + 1 + 1 + 2 + 2 + 4 + 5 + 5 + 5 + 5 + 6 + 7 + 7 + 8 + 8 + 8 + 9) / 19
= 80 / 19
≈ 4.21
To find the median, we need to arrange the data in ascending order: 0, 0, 0, 1, 1, 2, 2, 4, 5, 5, 5, 5, 6, 7, 7, 8, 8, 8, 9.
The median is the middle value, which is the 10th value in this case.
Median: 5
Now let's calculate the measures of variability, specifically the range and interquartile range (IQR).
Range: The range is the difference between the largest and smallest values in the dataset.
For Mountain View School:
Range: 9 - 0 = 9
For Seaside School:
Range: 9 - 0 = 9
Interquartile Range (IQR): The IQR is the difference between the third quartile (Q3) and the first quartile (Q1) and measures the spread of the middle 50% of the data.
For Mountain View School:
Q1 = 3
Q3 = 7
IQR = Q3 - Q1 = 7 - 3 = 4
For Seaside School:
Q1 = 2
Q3 = 7
IQR = Q3 - Q1 = 7 - 2 = 5
To determine which school is a better choice for a smaller class size, we can consider both the mean and the median.
Both the mean and median for Mountain View School are higher than those for Seaside School. This suggests that, on average, the class sizes at Mountain View School are larger than those at Seaside School. Therefore, if you are interested in a smaller class size, Seaside School would be a better choice
For Mountain View School:
- Median: The median class size is the middle value, which is 25.
- Mean: The mean class size is the sum of all the class sizes divided by the total number of classes, which is (29 + 28 + 28 + 27 + 25 + 24 + 24 + 23 + 21 + 20 + 19 + 18 + 15 + 13 + 10) / 15 = 21.27.
For Seaside School:
- Median: The median class size is the middle value, which is 20.
- Mean: The mean class size is the sum of all the class sizes divided by the total number of classes, which is (25 + 25 + 27 + 27 + 28 + 28 + 28 + 30 + 31 + 35 + 36 + 38 + 40 + 43 + 45) / 15 = 31.13.
Part B:
For Mountain View School:
- Range: The range is the difference between the largest and smallest values, which is 29 - 10 = 19.
- Interquartile Range (IQR): The IQR is the difference between the third quartile (Q3) and the first quartile (Q1). From the stem-and-leaf plot, we can see that Q1 is 20 and Q3 is 28. Therefore, the IQR is 28 - 20 = 8.
For Seaside School:
- Range: The range is the difference between the largest and smallest values, which is 45 - 25 = 20.
- Interquartile Range (IQR): The IQR is the difference between the third quartile (Q3) and the first quartile (Q1). From the stem-and-leaf plot, we can see that Q1 is 27 and Q3 is 38. Therefore, the IQR is 38 - 27 = 11.
Part C:
If you are interested in a smaller class size, Mountain View School is a better choice for you because it has a lower mean and median class size than Seaside School.
pls answer I will mark brainliest
Answers
Answer:
1372 cubic ft.
Step-by-step explanation:
\(V=\frac{4}{3} \pi 7^3\)
\(V=\frac{4}{3} \pi 343\)
\(V=457\frac{1}{3} \pi\)
Since pi is 3 to find the approximate answer, do:
\(V=457\frac{1}{3} (3)\)
\(V=1372\)
Hence, the volume of the sphere is approximately 1372 cubic ft.
Answer:
V = 1,372 ft³
Step-by-step explanation:
You have been given the equation necessary for calculating the volume of a sphere:
\(V = \frac{4}{3} \pi r^{3}\)
In this formula, "V" represents the volume, "π" is the given value (3), and "r" is the radius. While you have not been given the radius, you have been given the diameter (14 ft). The radius is half of the diameter.
radius = diameter / 2
radius = 14 ft / 2
radius = 7 ft
Now, you can plug this value into the formula and simplify to find the volume.
\(V = \frac{4}{3}\pi r^{3}\) <----- Volume formula
\(V = \frac{4}{3} * (3) *r^{3}\) <----- Plug 3 in for "π"
\(V = \frac{4}{3} * (3) * 7^{3}\) <----- Plug 7 in for "r"
\(V = \frac{4}{3} * (3) * (343)\) <----- Solve 7³
\(V = 1,372 ft^{3}\) <----- Multiply all the terms together
Triangle ABC with vertices A(–3, 4), B(0, 2), and C(–2, 1) on a coordinate grid. After a translation of 4 units right and 3 units down, what will be B ’ ?
Answers
Answer:
(4,-1)
Step-by-step explanation:
Answer:
(4, -1) is correct
Step-by-step explanation:
add 4 to 0 and minus 3 from 2
0 + 4 = 4
2 - 3 = -1
2+2x2-2+2 divided by 2x2-2+2+2+2
Answers
Answer:
2+2x2-2+2=6
2x2-2+2+2+2=8
6+8=14
Answer:
10
2+2x2-2+2=6. 2x2-2+2+2+2=8
=14
For a school project, Derek is investigating cell phone use in his hometown, Somerville. So far, he has found that the residents of Somerville used their cell phones for 11,609 minutes this year. Compared to last year, that is 30% more. For how many minutes did the residents of Somerville use their cell phones last year?
Answers
Answer:
Therefore, the residents of Somerville used their cell phones for approximately 8,930 minutes last year.
Step-by-step explanation:
To find out how many minutes the residents of Somerville used their cell phones last year, we can use the information given that this year's cell phone usage is 30% more than last year's.
Let's assume the cell phone usage last year was represented by the variable "x" (in minutes).
According to the information given, this year's cell phone usage is 30% more than last year's, so we can express this as:
x + 0.3x = 11609
Combining like terms, we have:
1.3x = 11609
To isolate the variable, we divide both sides of the equation by 1.3:
x = 11609 / 1.3
Simplifying the calculation, we find:
x ≈ 8930
Answer:
Therefore, the residents of Somerville used their cell phones for approximately 8,930 minutes last year.
Step-by-step explanation:
To find out how many minutes the residents of Somerville used their cell phones last year, we can use the information given that this year's cell phone usage is 30% more than last year's.
Let's assume the cell phone usage last year was represented by the variable "x" (in minutes).
Melinda rents paddle boats down at the pier. She uses 5.5 feet of nylon rope to tie off each boat. She started with 80 feet of rope. After securing all the boats, she was left with more than 3 feet of rope. How many boats did Melinda tie off?
A.
at most 16
B.
at most 26
C.
less than 14
D.
more than 16
Answers
Answer:
Less than 14
Step-by-step explanation:
Plato
What historical reality is represented in this excerpt?
Navajo children were taken from their parents to be educated far away.
Many Navajo children did not come back to the reservation.
The parents of Navajo children created their own educational system.
Many Navajo parents wanted their children to be educated but not taken away.
Answers
Answer:
Navajo children were taken from their parents to be educated far away.
Step-by-step explanation:
Answer:
I got the same answer as the other person its A.) Navajo children were taken from their parents to be educated far away.
Step-by-step explanation: