All of the following are equivalent to 2(2a + b) + 8, except _____.
A. 4 a + 2 b + 8
B. 4( a + b + 2)
C. 4 a + 2( b + 4)
Answers
Answer:
B. 4( a + b + 2)
Step-by-step explanation:
Task: Simplify 2(2a + b) + 8
1. Distribute the 2
4a + 2b + 8
---------------------
Evidently, that is the same as A, so A is correct.
Now if we try C, 4a + 2(b+4), we see we need to simplify to check.
So let us distibute the 2.
4a + 2b + 8. Also correct.
This probably means that B is incorrect.
4(a + b + 2)
Let's distribute the 4.
4a + 4b + 8
This is incorrect because only have two "b".
Related Questions
What is the area of the triangle.
Answers
Answer:
4.44 cm²
Step-by-step explanation:
We can find the area of the outlined triangle by plugging its dimensions into the triangle area formula.
\(A = \frac{1}2 \times \text{base} \times \text{height}\)
\(A = \frac{1}2 \times 6 \times 1.48\)
\(\boxed{A = 4.44 \text{ cm}^2}\)
It’s half the base X the height
Identify the polygon according to the number of sides
a.
quadrilateral
c.
decagon
b.
pentagon
d.
hexagon
Please select the best answer from the choices provided
A
B
C
D
Answers
Answer:
A
Step-by-step explanation:
quad = 4
dec = 10
pent = 5
hex = 6
Answer:
A
Step-by-step explanation:
The polygon shown has 4 sides
A four sided polygon is a quadrilateral
Therefore the answer is A
For the following expressions, press Yes or No to indicate whether each expression is equivalent to 3(x + 2).
Answers
Answer:
3x + 2 No
3(2 + x) Yes
3x + 2x No
x + 2x + 2 + 4 Yes
x + x + x + 1 + 1 + 1 + 1 + 1 + 1 Yes
Step-by-step explanation:
It costs $7.50 to enter a petting zoo. Each cup of food to feed the animals is $2.50. If u have $12.50, how many cups can u buy?
Answers
Answer:
exactly 2 cups
Step-by-step explanation:
hope this helps
Answer:
12.50 - 7.50 = 5
2.50 × x = 2.5
so 2 cups
What is (3x2.05)+(_x1.09)+(2x_)+(_x_) I NEED HELP PLEASE SOMBODY
Answers
Is the relation a function? Complete the sentence.
Answers
Answer:
the inly way this could be a function is iif it is x times 0 plus 2
Answer:
yes
Step-by-step explanation:
You want to know if the relation shown is a function.
FunctionA set of ordered pairs (x, y) represents a function if there are no repeated x-values. Here, there are 4 unique x-values for the 4 ordered pairs (none are repeated), so this relation is a function.
__
Additional comment
Yes, it's that simple.
Look down the x-list. If you see any repeats, it is not a function. The same is true for ordered pairs (x, y). If there are any repeated first numbers, it is not a function.
1.06(12.95+x)=31.27 solve for x
Answers
Answer:
x = 16.55Step-by-step explanation:
1.06(12.95 + x) = 31.27
Multiply the terms in the bracket
That's
13.727 + 1.06x = 31.27
Subtract 13.727 from both sides
That's
13.727 - 13.727 + 1.06x = 31.27 - 13.727
1.06x = 17.543
Divide both sides by 1.06
That's
\( \frac{1.06x}{1.06} = \frac{17.543}{1.06} \\ x = \frac{17.543}{1.06} \)
We have the final answer as
x = 16.55Hope this helps you
x=16.55
Solve for n.
–2(n + 2) + 6 = 8
n =
Answers
Answer:
n = -3Step-by-step explanation:
Answer:
n = -3
Step-by-step explanation:
We have the equation –2(n + 2) + 6 = 8. First, we simplify it:
–2(n + 2) + 6 = 8
–2(n + 2) = -2n + (-4) = -2n - 4
So now we have:
-2n - 4 + 6 = 8
We can subtract 6 from both sides of the equation to get:
-2n - 4 = 2
We can also add 4 to both sides to get:
-2n = 6
Divide both sides by 2 to get:
-n = 3
Multiply both sides by -1 to get:
n = -3
what is this answer.Estimated pls help now!i need it in 1-3 minutes
2.21×5.1≈
HELP ME NOWWW
Answers
Answer:
11.271
Step-by-step explanation:
just multiply
Answer:
11.271
Step-by-step explanation:
Multiply
2.21 by 5.1
I give brainliest!! no link or i’ll report you.
A circle is drawn on the coordinate plane. It
has a center at (2, 1) and passes through the
point (2, 5). What is the approximate
circumference of the circle?
A. 8 units
B. 13 units
C. 25 units
D. 50 units
Answers
Quinn's mom went to the same middle school that Quinn is now attending. The current student population is 817 students. Since Quinn's mom attended, the school has experienced a
57% increase in population. About how many students were enrolled at the school when Quinn's mom attended?
Answers
Answer:
520
Step-by-step explanation:
Past number of pupils: p
Increase of 57% = 1.57
Present number of pupils = 817
p x 1.57 = 817
p = 817 divided by 1.57 = 520.382
rounded to the nearest whole number = 520 (this is why the question says "about" how many...)
57 x 817 = 46569
46569 divided by 100 = 465.69
817-465.69 = 351.31
Answer : 351
Explanation : 57 times 817 equals to 46569 and then you divided by 100 . Then it equals to 465.69 . To find out the how many more students were enrolled you have to subtract 465.69 from 817 and then you get 351.31 which you round to 351 .
Help please i need it for my math class
Answers
Answer:
x - 2 < 7
Step-by-step explanation:
the total is 9 but x should be less than 9 so it would be G
HELP ILL GIVE BRAINLY
Answers
Answer:
y=-115
Step-by-step explanation:
y/5+4=-19
y/5=-23
y=-115
Answer:
-19 - 4 = -23. y = 20
Step-by-step explanation:
please answer quickly
Answers
Answer:
37.5
Step-by-step explanation:
cosФ = \(\frac{A}{H}\)
cos(33°35') = \(\frac{m}{45}\)
m = 45 × cos(33°35')
m = 37.5 (1d.p.)
Pls help me to find the median and mode, with solution pls
Answers
Answer:
Mode=32
Mean=32
Median=32
Step-by-step explanation:
Mode=highest frequency
Mode=10
Mean=£fx
£f
Mean=1280
40
=32
Median=n/2
=40/2
=20
median=32
Median-32
Hope this helpsssss
Allen uses the claw part of a hammer to remove a nail from a piece of wood. This lever does not make Allen stronger, but it helps him to complete the task using less force.Explain how this lever works.
Answers
Answer:The lever operates by applying forces at different distances
Step-by-step explanation:
write an equation of the following story problem
Answers
Answer:
5x + 15y =20 = - 3x +25y =75
= 8 minutes
Step-by-step explanation:
5x + 15y =20 multiply all by 3 to get 15x
15x +45y=60
- 3x +25y =75 multiply all by -5 to get 15x
15x -125y = -375
rewrite ans together
15x +45y=60
15x -125y = -375
-80y = -315
y = -315/ - 80
y = 3.9375 = y= 4 substitute to find x
5x + 15(4 )=20
5x +60 = 20
5x=-40
x= -40/5
x=-8
15x +45(4)=60
15x +180 =60
15x =-120
x=-8
if the measure of the edge is doubled to 8 centimeters on each edge, what is the volume of the cube
Answers
If the original side length was 4 then do 8/4
Do 8/4 cubed then multiply this times the area of the original cubed.
The answer is 512
The graph relates the distance traveled by Train A, in miles, and the time taken, in hours. The table shows the distance traveled by Train B, in miles, and the time taken, in hours.
Answers
Answer:A)
Yes, the relationship is proportional.
B)
66,000 miles.
Step-by-step explanation:
A)
Yes, the graph represents a proportional relationship.
Since, A proportional relationship is one in which two quantities vary directly with each other. We say the variable y varies directly as x if:
y=kx
for some constant k , called the constant of proportionality .
As y=12000x hence the relationship is proportional.
B)
We calculate the equation of the graph with the help of two points on the graph namely (2,24000) and (4,48000) with the help of slope-intercept form of the line.
y=mx+c where m denotes the slope of the line and c denotes the y-intercept of the line.
Here when x=2 y=24000 and when x=4 y=48000
Hence, 24000=2x+c
and 48000=4x+c
on subtracting the above two equations we have:
m=12000 and c=0
Hence, the equation of line is y=12000x
Now the value at x=5.5 is:
y=12000×5.5=66,000
Hence, the number of miles the probe travels in 5.5. hours is 66,000 miles.
Step-by-step explanation:
median of 29, 39, 51, 49. 20 pointsssss
Answers
Answer:
51
Step-by-step explanation:
(Copying word by word from the sheet)
Your teacher is wondering if the absolute value of a number can ever be negative. Is she correct? Why or why not? Use specific examples and sound mathematical reasoning to support your answer.
(help wth does that mean-)
Answers
]Absolute value represents distance on a number line. Distance can never be negative
Step-by-step explanation:
Points P and Q are plotted on a line.
Find a point R so that a 180-degree rotation with center R sends P to Q and Q to P.
Answers
Answer:
point R in between points P an Q
Step-by-step explanation:
if its correct your welcome XD
if its incorrect sorry X(
The point R should lie between the midpoint of points P and Q.
Here,
Points P and Q are plotted on a line.
We have to find point R so that a 180-degree rotation with center R sends P to Q and Q to P.
What is 180-degree rotation?
The 180 degree rotation acts like both a horizontal (y-axis) and vertical (x-axis) reflection in one action. The reflection is the same as rotating the figure 180 degrees.
Here,
After 180 degree rotation point R sends P to Q and Q to P.
When we put R in between midpoint of P and Q
The point R sends P to Q and Q to P.
So, The point R will lie between the midpoint of P and Q.
Learn more about the 180-degree rotation visit:
https://brainly.com/question/28416304
#SPJ2
cone A and cone B are similar. The radius of cone a is 5.4 feet and the radius of cone b is 16.2 feet. if the surface area of cone a is 43 square feet, find the surface of cone b
Answers
The surface area of cone B is 387 square feet.
What is a cone?It is a shape of a christmas tree where there is a base of radius r and a top point called the apex.
We have,
Since the cones are similar, their corresponding dimensions are proportional.
In particular, the ratio of their radii is equal to the ratio of their surface areas.
Now,
Let S be the surface area of cone B, then we have:
ratio of radii = 16.2/5.4 = 3
ratio of surface areas = S/43
Since the ratio of surface areas is equal to the ratio of radii squared,
We have:
3² = S/43
9 = S/43
S = 9 x 43
S = 387
Therefore,
The surface area of cone B is 387 square feet.
Learn more about cone here:
https://brainly.com/question/13798146
#SPJ3
Can u please help me with this
Answers
Answer:
C.
Hope this helps!
Answer:
B
Step-by-step explanation:
40/48 and 100/120
Simplify
40 divided by 4 = 10
48 divided by 4 = 12
100 divided by 10 = 10
120 divided by 10 = 12
10/12 and 10/ 12
When simplifying fractions make sure to divided to numerator and the dominator by the same number
Students in an engineering class designed model airplanes. The average distance flown was 48 feet. The table shows the difference from average for five students. A 2-column table with 5 rows. Column 1 is labeled Name with entries Shanquelle, Ceili, Ella, Vincent, Conner. Column 2 is labeled Difference (feet) with entries negative 1.3, two-fifths, negative 0.2, 1.5, negative one-fourth. Which statements are true? –1.3 is less than Two-fifths. 1.5 is less than –0.2. Two-fifths is greater than –0.2. Negative one-fourth is less than –0.2. 1.5 is greater than Two-fifths.
Answers
Answer:
Its A, C, D, E!
Step-by-step explanation:
I did the assignment edge 2021
Help!
What is equivalent to the expression 6(21)
A. 6(21-1)
B. 6(20 + 1)
C. 6(20-1)
D. (3+2)(21+1)
E. (3+2)(20+1)
Answers
Answer:
I think e no answer is correct
Anything within parenthesis completed first. So 6(20+1) is equal to 6(21).
A isn’t right because 21-1=20. 6(20) is not equal to 6(21)
C isn’t right because 20-1=19. 6(19) and 6(21) aren’t equal.
E and D aren’t right because 3+2=5. 5(22) and 5(21) are not equal to 6(21).
Hope this helped!!
Which pair of points forms a vertical line segment that is 4 units long? A. (–3, 5) and (–7, 5) B. (3, –8) and (3, –4) C. (2, 1) and (2, 3) D. (2, 4) and (–2, 4)
Answers
Answer: (-7,5) and (-3,5) :) there for answer is A
Step-by-step explanation:
Answer:
a
Step-by-step explanation:
PLEASE HELP I'LL MARK YOU BRAINLIEST
A) Suppose a scale model has a scale of 2 inches = 3 feet. What is the scale factor?
b) Suppose the scale is 2 inches = 4 yards. What is the scale factor?
Answers
B= 1:72
I looked up the answers and came up with this hope it helps
Which measure of central tendency best describes the data?
12, 16, 17, 17, 16, 15, 20, 15, 16
A. mean only
B. either mean or median
C. median only
Answers
Answer:
If I'm not mistaken the correct answer should be B.
(-sorry if I got it Wrong-)
ok, my let’s try this again. can someone please help fill out the ? for this table.
Answers
Answer:
60 months
$9,000
4.6%
Step-by-step explanation:
\(\boxed{\begin{minipage}{6.5cm}\underline{Simple Interest Formula}\\\\$ A = P(1 + rt)$\\\\where:\\\\ \phantom{ww}$\bullet$ $A =$ final amount \\ \phantom{ww}$\bullet$ $P =$ principal amount \\ \phantom{ww}$\bullet$ $r =$ interest rate (in decimal form) \\ \phantom{ww}$\bullet$ $t =$ time (in years) \\ \end{minipage}}\)
Given:
A = $5,000P = $4,000r = 5% = 0.05Substitute the given values into the formula and solve for t:
\(\implies 5000=4000(1+0.05t)\)
\(\implies \dfrac{5000}{4000}=1+0.05t\)
\(\implies1.25=1+0.05t\)
\(\implies 0.05t=1.25-1\)
\(\implies 0.05t=0.25\)
\(\implies t=\dfrac{0.25}{0.05}\)
\(\implies t=5\; \rm years=60\; months\)
Given:
A = $11,160r = 8% = 0.08t = 36 months = 3 yearsSubstitute the given values into the formula and solve for P:
\(\implies 11160=P(1+0.08 \cdot 3)\)
\(\implies 11160=P(1.24)\)
\(\implies P=\dfrac{11160}{1.24}\)
\(\implies P=\$9000\)
Given:
A = $3,207P = $3,000t = 18 months = 1.5 yearsSubstitute the given values into the formula and solve for r:
\(\implies 3207=3000(1+r \cdot 1.5)\)
\(\implies \dfrac{3207}{3000}=1+1.5r\)
\(\implies 1.069=1+1.5r\)
\(\implies 1.5r=1.069-1\)
\(\implies 1.5r=0.069\)
\(\implies r=\dfrac{0.069}{1.5}\)
\(\implies r=0.046\)
\(\implies r=4.6\%\)
Therefore, the completed table is:
\(\begin{array}{|c|c|c|c|}\cline{1-4} \vphantom{\dfrac12} \rm BALANCE & \rm PRINCIPAL & \rm INTEREST \; RATE & \rm TIME \\\cline{1-4} \vphantom{\dfrac12} \$5,000 & \$4,000 & 5\% & \rm 60 \; months\\\cline{1-4} \vphantom{\dfrac12} \$ 11,\!160 & \$9,000 & 8\% & \rm 36 \; months \\\cline{1-4} \vphantom{\dfrac12} \$3,207 & \$3,000 & 4.6\% & \rm 18 \; months\\\cline{1-4} \end{array}\)