Answer:
-2x²(x + 1)(x - 4)
Step-by-step explanation:
Hello!
Factor:
[tex]-2x^4 + 6x^3 + 8x^2[/tex][tex]-2x^2(x^2 - 3x - 4)[/tex] Take out GCFThink: What numbers add up to -3 and multiply to -4?
Answer: -4 and 1
Continue:
[tex]-2x^2(x^2 - 3x - 4)[/tex][tex]-2x^2(x^2 - 4x + x - 4)[/tex][tex]-2x^2(x(x - 4) + 1(x - 4))[/tex] Factor by Grouping[tex]-2x^2(x + 1)(x - 4)[/tex]The complete factored form is -2x²(x + 1)(x - 4)
what’s the area and the perimeter and of the triangle?
Suppose A< - 1 what must be true about the value of b so that ab< a
Answer:
b must be positive
Step-by-step explanation:
if a is less than -1
that means to get smaller numbers
b needs to be positive
so that when a is multiplied by b you would have
numbers that are more negative
Answer:
b > 1
Step-by-step explanation:
Given:
a < -1 ab < aSubstituting a = -1 into ab < a
⇒ (-1)b < -1
⇒ -b < -1
⇒ b > 1
If a < -1 then a is negative. If ab < a then ab is also negative.
In order for ab to be negative (when a is negative) b must be positive.
For ab < a then b > 1.
Proof
If b = 0.5 and a = -1.5 then ab = -0.75
As -0.75 > -1.5 then ab > a so this cannot be true.
If b = 1.5 and a = -1.5 then ab = -2.25
As -2.25 < -1.5 then ab < a so this is true.
Therefore b > 1
Which expression is equivalent to
(
3
4
7
5
)
3
?
what’s the area and the perimeter and of the triangle?
Answer:
A: 7.75 meter square
P: 16m
Step-by-step explanation:
Area: Formula : Take Base x Height then divided by 2
Perimeter: Formula : Add up all the exterior side of the triangle
Hope it helped
Have a nice day of studying :>
Ellie missed 76 questions on her multiple choice history final and earned a grade of 62%. How many total questions were on the final exam?
Answer:
200 questions on the final exam.
Step-by-step explanation:
38% = 76 questions, 100% = 2.63157894737 x 76 = 200
(100/38=2.63157894737 hence this is the answer)
Clara visits the aquarium
from her hotel. She walks á mile to the bus stop, takes the bus for
or 1
miles, and walks the rest of the way to the aquarium.
How far did Clara walk after getting off the bus?
Answer:
The total distance walked to the aquarium is 1/2 miles.
Step-by-step explanation:
What distance did she walk? Distance walked = 2 1/2 - (1/4 + 1 3/4) = 2 1/2 - 2 =1/ 2 miles
whats the square root of 55
Answer:
7.4161984871
Step-by-step explanation:
7.4161984871x7.4161984871=55
Answer:
3025
Step-by-step explanation:
The mean of the following data is 509.
{419,450,462,499,520,521,589,612}
What is the mean absolute deviation for the data set?
Enter your answer as a number rounded to the nearest tenth, like this: 42.5
If the mean value of the data set is 509. Then the mean absolute deviation (MAD) for the data set will be 51.5.
What is the mean absolute deviation?It is the average distance between each data point and the mean.
The mean of the following data is 509.
{419, 450, 462, 499, 520, 521, 589, 612}
Then the mean absolute deviation (MAD) for the data set will be
[tex]\rm MAD =\dfrac{1}{n}\sum_{i=1}^{n}\left|x_i - \mu \right|[/tex]
We have
μ = 509
n = 8
Then
[tex]\rm MAD =\dfrac{1}{8} \times (|419 - 509| + |450- 509| + ..... + |612 - 509|) \\\\MAD = 51.5[/tex]
More about the mean absolute deviation link is given below.
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A 3% fee is taken out of an initial amount of $3,460, and then a $100 fee is taken after that, leaving a new amount of
Answer:
turn 3% into decimal by diving 3 by 100
3/100=0.03
0.03X3460=103.80
3460-103.80=3356.20
3356.20-100=3256.2
-2(0)+2y=6
please help now I need to get this done please thank you
Answer:
y=3
Step-by-step explanation:
Multiply -2 by 0 to get 0. Now to get y alone, divide 6 by 2 to get the answer y=3.
I NEEED HELP QUICK!!!
Put in order from greatest to least: -5, -10, -1/2, -2.5, -0.25
Answer:
-0.25, -1/5, -2.5, -5, -10
Step-by-step explanation:
PLEASE HELP ME
Select the correct answer. Which stem and leaf plot represents the given data set?
Answer:
i think its x
Step-by-step explanation:
it looks simple yet intimidating
EXERCISES
1
The number of goals for the 13 players on a soccer team are
4, 9, 0, 1,1, 2, 0, 0, 2, 8, 8, 3, 1. Find the median, lower quartile, and
upper quartile. Then make a box plot for the data.
Answer:
Step-by-step explanation:
4, 9, 0, 1,1, 2, 0, 0, 2, 8, 8, 3, 1.
Arrange in ascending order:
0, 0, 0, 1, 1, 1, 2, 2, 3, 4, 8, 8, 9.
The median = middle value = 2.
Lower quartile = 0.5
Upper quartile = 6.
If angle b measures 25°, what is the approximate perimeter of the triangle below? a right triangle is shown. angle a is 90 degrees and angle b is 25 degrees. side a b has a length of 4. 10.3 units 11.8 units 22.1 units 25.2 units
Answer:
Step-by-step explanation:
I think the answer is 10.48 or 10.3, It was a little difficult because I solved this multiple ways but I do believe 10.48 is more accurate, I apologize however if I am wrong.
Answer:
10.3
Step-by-step explanation:
its right
Find P(B|C). P(B|C) = StartFraction 9 Over 34 EndFraction = 0. 26 P(B|C) = StartFraction 9 Over 24 EndFraction = 0. 38 P(B|C) = StartFraction 9 Over 70 EndFraction = 0. 13 P(B|C) = StartFraction 9 Over 58 EndFraction = 0. 16.
The question is an illustration of probability, and the value of P(B|C) is P(B|C) = 9/24 =0.38
How to determine the probability P(B|C)?The table is given as:
C D Total
A 15 21 36
B 9 25 34
Total 24 46 70
The probability (BIC) is calculated using:
P(B|C) = n(B and C)/n(C)
From the table, we have:
n(B and C) = 9
n(C) = 24
So, the equation becomes
P(B|C) = 9/24
Evaluate
P(B|C) = 0.38
Hence, the value of P(B|C) is P(B|C) = 9/24 =0.38
Read more about probability at:
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Answer:
B
Step-by-step explanation:
just did it
The heights of two groups of students in different grades are shown in the box-and-whisker plot below.
Which statement correctly compares the two data sets?
A.
The range of group A is less than the range of group B.
B.
The median of group A is less than the median of group B.
C.
The interquartile range of group A and group B is the same.
D.
The first quartile of group A is greater than the first quartile of group B.
Answer:
D
Step-by-step explanation:
The first quartile of group A is greater than the first quartile of group B.
what’s the value of x
Answer:
x = 11
Step-by-step explanation:
282/2 = 141
180 - 141 = 39
4x - 5 = 39
4x = 44
x = 11
Logan has x twenty-dollar bills and 1 fifty-dollar bill. How much money does Logan have? Write your answer as an expression,
Answer:
Logan has 20x + 50 dollars.
Hope this helps!
Answer:
20x+50
Mark brainliest :)
if john has 5 apples in he gives 2 two his friend how many will have in all
Answer:
5 apples
Step-by-step explanation:
Answer:
3 5-2=3
Step-by-step explanation:
The multiplication of two rational numbers results in a _____________
===========================================================
Explanation:
The proof of this is as follows
p, q, r and s are integers
q and s cannot be zero
A = some rational number = p/q
B = some other rational number = r/s
A*B = (p/q)*(r/s) = (p*q)/(r*s)
The result is of some form integer/integer, where the denominator is nonzero. This shows that A*B is rational.
Therefore,
rational*rational = rational
---------------
A few examples:
(1/2)*(3/7) = (1*3)/(2*7) = 3/14(2/5)*(9/8) = (2*9)/(5*8) = 18/40 = 9/20(7/3)*(-1/9) = (7(-1))/(3*9) = -7/27Side note: any whole number is a rational number. For instance, the number 7 can be thought of as the fraction 7/1 or 14/2 or 21/3 and so on.
7. What is the surface area of the triangular prism shown?
Answer:
1120 yd²
Step-by-step explanation:
Surface area =
(Perimeter of the base × Length of the prism) + (2 × Base Area) =
(S1 + S2+ S3)L + bh
(17 + 15+ 8)25 + 15*8
40*25+120
1000+120 =
1120
cuemath
Joe opened a bank account with $80. He then withdrew $35 and deposited $115. What is his account balance after these transactions?
$__
Answer
[tex]160[/tex]
Explanation
Based on the given conditions, formulate: [tex]115+80-35[/tex]
Calculate the sum or difference: [tex]195-35[/tex]
Calculate the sum or difference: [tex]160[/tex]
get the result: [tex]160[/tex]
Answer: [tex]160[/tex]
Answer:
$ 160
Step-by-step explanation:
80 -35 +115 = 160
Equivalent to 28xy+16x
Answer:
[tex]4x(7y+4)[/tex]
A medical sales representative of a certain antibacterial cream ask people who visited their kiosk whether they have tried to use their brand before. What sampling technique was used in this situation?
Cluster Sampling
Volunteer Sampling
Stratified Sampling
Simple Random Sampling
The sampling technique that was used in the situation is (d) Simple Random Sampling
How to determine the sampling technique?From the question, we understand that all people that visited the kiosk were asked the same question.
The people that visited the kiosk have equal chance of being selected.
This type of selection or sampling is a simple random sampling
Hence, the sampling technique that was used in the situation is (d) Simple Random Sampling
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Which graph represents the solution of y > x2 + 2?
The graph that represents the solution of y>x²+2 is given below.
The given inequality is y>x²+2.
We need to identify which graph represents the solution of y>x²+2.
What is an inequality graph?Inequalities that use ≤ or ≥ symbols are plotted with a solid line to show that the line is included in the region.
For example, this graph shows inequality. This can be seen as there is a dashed line, and the region where the coordinates are less than -1 is shaded.
Graph the inequality by finding the boundary line, and then shading the appropriate area.
Put x=0, 1, 2, 3,....in the inequality and solve for y.
We get y=2, 3, 6, 11,...
The graph that represents the solution of y>x²+2 is given below.
To learn more about the graph of inequality visit:
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Answer:
I did it and got it correct
Step-by-step explanation:
PLSSS HELP IF YOU TURLY KNOW THISS
Answer:
=
Step-by-step explanation:
lcm = 8 so you multiply the numerator of 2 1/2 1 x 4 = 4 4 is your numerator and 8 is your denominator 2 4/8 = 2 4/8 you can simplify to 2 1/2 too
Answer:
2 4/8 = 21/2 Equal To =
Step-by-step explanation:
2 4/8
Also equal to 2 1/2
Since reducing fractions 4/8 simplified is 1/2
2 4/8 = 21/2
Consider the equation below. n2 3h2 right arrow. 2nh3 what is the mole ratio of hydrogen to ammonia? 1:1 1:2 3:2 5:4
The mole ratio of hydrogen to ammonia in the equation N₂ + 3H₂ → 2NH₃ is 3:2
How to find mole ratio?we will balance the equation to find the mole ratio of the hydrogen to ammonia.
Therefore,
N₂ + 3H₂ → 2NH₃
From the equation, Nitrogen has a coefficient of 1 , Hydrogen have a coefficient of 3 and ammonia have a coefficient of 2.
Therefore, the coefficient of the substance is the number of moles.
Hence, the mole ratio of hydrogen to ammonia is 3:2
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Find the diameter of a circle with a
circumference of 63 ft.
Answer:
20ft
Step-by-step explanation:
circumference of a circle in terms of diameter has the formular
C = πd
63 = 3.142×d
d= 63/3.143=20.050
diameter= 20ft
In ΔABC, if C is a right angle, what is the measure of x?
Answer:
x ≈ 72.3°
Step-by-step explanation:
using the cosine ratio in the right triangle
cos x = [tex]\frac{adjacent}{hypotenuse}[/tex] = [tex]\frac{AC}{AB}[/tex] = [tex]\frac{7}{23}[/tex] , then
x = [tex]cos^{-1}[/tex] ( [tex]\frac{7}{23}[/tex] ) ≈ 72.3° ( to the nearest tenth )
