Answers
Answer:
Step 2 was the first mistake and the second option is the answer.
Step-by-step explanation:
Julia incorrectly factored the -1 from the second group of terms.
The correct option is (B)
What is expression?An expression is a sentence with a minimum of two numbers or variables and at least one math operation.
Given:
2x^4 + 2x³ -x²-x
While solving the above expression in the third step
x(2x²(x+1)) - 1(x-1)
should be
x(2x²(x+1)) - 1(x + 1)
Hence, Julia incorrectly factored the -1 from the second group of terms.
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Related Questions
If Mark takes 7 hours to paint a house and Hanna takes 5 hours to paint the same house, how much time will it take both of them to paint the house? Please explain!
Answers
Answer:
2 hours and 42 minutes
Step-by-step explanation:
we can see that both people are painting the same house, however 1 person goes faster than the other one
lets start by putting our numbers into fractions then finding a like value. 35 in this case. 1/7 equals 5/35 and 1/5 equals 7/35 now we add these together and get 13/35. our next step is to flip this to 35/13 and take put any whole numbers. in this case 2 whole numbers can be made
leaving
9/13
(0.69)
converting this to minutes is 42 minutes.
A tape diagram. There are 65 students out of 100 students who ride the bus. There are question mark students out of 800 students who ride the bus. 65% of the 800 students at North High School ride the bus. How many students ride the bus? 100 multiplied by is equal to 800. 65 multiplied by is equal to . out of students ride the bus.
Answers
Answer:
answer one is 8
answer two is 8
answer three is 520
answer four is 520
answer five is 800
Step-by-step explanation:
There are 520 students out of 800 ride the bus,
65% of 800 is 520,
100 multiplied by 8 is 800.
What are ratios and proportions?The majority of the explanations for ratios and proportions use fractions. A ratio is a fraction that is expressed as a:b, but a proportion says that two ratios are equal. In this case, a and b can be any two integers. The foundation for understanding the numerous concepts in mathematics and science is provided by the two key notions of ratio and proportion.
Given,
1: There are 65 students out of 100 students who ride the bus. There are question mark students out of 800 students who ride the bus.
let x student out of 800 rides the bus
so both conditions 65/100 and x/800 are in proportions,
65/100 = x/800
x = 800*65/100
x = 520
2: 65% of the 800 students at North High School ride the bus.
65% of 800 = 65/100 x 800
65% of 800 = 520
3: 100 multiplied by is equal to 800.
let x multiplied by 100 is 800
x*100 = 800
x = 800/100
x = 8
Hence 520 students out of 800 ride the bus,
65% of 800 is 520,
100 multiplied by 8 is 800.
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Does anyone know this?? Tysm
Answers
Answer:
D
Step-by-step explanation:
hope this helps
write the equation of the line that is parallel to y=-6x+-8 that passes through (-8,8)
Answers
Answer:
y=-6x-40
Step-by-step explanation:
Find the slope of the line that passes through (4,7) and (1,8)
Answers
1/-3
Answer
-1/3
Is -6 greater than, less than, of equal too -4
Answers
Answer:
-6 in less than -4.
Answer:
-6 less than -4
Step-by-step explanation:
-6 is less because on the number line it will look like it's before -4
Hope this helps!!!
Beginning at the origin, how far do you travel along the x-axis when plotting the point below?
(6, 40)
Answers
Answer:
6 units to the right
Step-by-step explanation:
Hope this helps!
PLEASE HELP ME ANSWER DIRECTIONS ARE IN THE PIC PLEASE HELP ASAP!
Answers
In the figure below, lines m and n are parallel:
In the diagram shown, 27 measures 97 degrees. The measure of 28 is
degrees?
Answers
Answer:
the measure of angle 8 is 83 degrees
Step-by-step explanation:
PLEasEE help me...
i need
an equation with the solution of x=5.
a equation with the solution of 3/2 (1.5)
an equation with the solution of -2
thank you
Answers
Answer:
3x + 3 = x + 13
y=1.5x−6.5,
Step-by-step explanation:
substitute the number in for the first two
Lines AB and CD are parallel. Find the measures of the three angles in triangle ABF.
What is the angle measurement for A, B, and F. (Make sure they are degrees)
Can you help me with this math question?
Answers
A = 42°
B= 23°
F = 115°
Step-by-step explanation:
The required measures of the three angles in triangle ABF are A = 23°, B = 42°, and F = 115°.
What are Alternate Interior Angles?Alternate Interior Angles are defined as the pair of angles created on the inner side of the parallel lines
Given that Lines AB and CD are parallel.
To determine the measures of the three angles in triangle ABF.
For finding ∠F,
∠CDF = 180° - 157° = 23°
∠F = 180° - ∠C - ∠CDF
∠F = 180° - 42° - 23°
∠F = 115°
However, if a transversal intersects two parallel lines, then each pair of alternate interior angles is equal.
So ∠A = ∠CDF = 23°
And ∠B = ∠C = 42°
Thus, the required measures of the three angles in triangle ABF are A = 23°, B = 42°, and F = 115°.
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n is a positive integer. (i) Explain why n(n - 1) must be an even number.
Answers
Answer:
Since the equation is n(n-1) where n is even, (n-1) will result to an odd number and when multiplied the answer with n( an even number), this will result to an EVEN NUMBER. Therefore, in any number that n can substitute, whether even or odd, the answer will always result to an even number
Step-by-step explanation:
what is 96-4.5y-3.2y=5.6y+42.80
PLEASE HELP!!!!
Answers
no you’ll bring 96 to the other side so now it’s
-7.7y=5.6y-53.20
now you’ll bring 5.6y to the other side. -13.30y=-53.20. you want the variable by itself so do -13.30 divided by both sides
Solving Steps:
check all that apply ... 50 points for brainliest answer !!
Answers
(x^(3-6))^2 = (x^-3)^2
x^3*2+x^-6*2 = x^6+x^-12
when the numbers are just next to each other (ex. x²x³) you just ADD the exponents and you get (in this case x^6)when the numbers and exponents are in and out of parentheses (ex. (x³)²) you MULTIPLY the exponents (in this case you get x^6)when you have both, you solve what is IN the parentheses (ex. (x²x³)²) first, making the equation (ex. (x^6)²) and then you multiply the exponent by 2 (ex. (x^12) and get the answer. NOTE - ^ means to the powerThe second from the top, and the second to last expressions should be the answer
Hope this helps!
ethan planted a tree that was 1.85 meters tall. several year later the tree is 5.30 meters tall
Answers
5-0= 5 would be how you get the 5 at the end of the answer- 3.45
write the nature of roots of quadratic equation 4x square +4 root3x + 3=0
Answers
Answer:
yes right now because dont unable to ask you.
The mean and standard deviation for number of battery crimes in the U.S. from 1985 to 2000 are X = 326,845 and sx = 27,569. The mean and standard deviation for number of property crimes in the U.S. for the same time period are y = 634,235 and Sy = 42,268. The correlation coefficient is r = 0.92. Find the equation for the least- squares regression line for number of property crimes compared with number of battery crimes.
A: y = 1.41 + 173,214.37x
B: y = 173,214.37 + 1.41x
C: y = 421,052.69 + 0.65x
D: y = 0.65 + 421,052.69x
E: Unable to determine the equation
Answers
Answer:
The correct answer is: A
Step-by-step explanation:
The value of the slope and intercept is:
=0.92(42268/27569)
=1.410518
a=y-bx
=634235-1.410518×326845
=173214.3716
The eququation for the least-square regression line is:
y=173214.3716 + 1.4105518x
Round to the 2 decimal place:
=173,214.37 +1.41x
The equation for the least squares regression line for number of property crimes compared with number of battery crimes is (b) y = 141x + 173214.37
How to determine the least square regression equation?The given parameters are:
Mean x, μ = 326,845 Standard deviation of x, σ = 27,569Mean y, μ = 634,235 Standard deviation of y, σ = 42,268Correlation coefficient, r = 0.92Calculate the slope (m) using:
m = r * Sy/Sx
This gives
m = 0.92 * 42268/27569
Evaluate
m =1.41051761036
Approximate
m = 1.41
The y-intercept (c) is calculated using:
c = μy -m * μx
So, we have:
c = 634235 - 1.41051761036 * 326845
Evaluate
c = 173214.371642
Approximate
c =173214.37
The least-square regression line equation is represented as:
y = mx + c
So, we have:
y = 141x + 173214.37
Hence, the equation for the least squares regression line for number of property crimes compared with number of battery crimes is (b) y = 141x + 173214.37
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How is 9.746 x 1013 written in standard form?
Answers
Answer:
9872.698 is 9.746 x 1013 in standard form
Mrs. Van and her family went bowling. The total cost of the shoes was $12 and the cost to bowl was $5 per game. Write an equation y, the cost of bowling and x the number of games they played.
Answers
y=5x+12
hope i could help!
Lynn is making a square picure frame as a gift for her mothers birthday. Lynn would like for the frame to have to an area of 48 inches squared. She also wants the side lengths to be integers.
Part A: Is it possible for Lynn to create a square picture frame with an area of 48 inches sqaured? Yes or No? Support your answer using mathimatical reasoning
Part B: If lynn choses a different sqaure shaped frame, what is an alternative area of that frame that would have integer side lengths? Support your answer using mathimatical reasoning
Answers
Answer:
1)The answer is no
2)48 7 6 = 8. 54 7 6 = 9. 60 + 6
Step-by-step explanation:
1) because if you add it a lot of times you will get a bad answer. But if you do the math like this 48 7 6 = 8. 54 7 6 = 9. 60 + 6.
2) well 48 7 6 = 8. 54 7 6 = 9. 60 + 6= 75.6 right. So the picture frame is 5 inches
don't forget to make me brainliest
Answer:
1)The answer is no
2)48 7 6 = 8. 54 7 6 = 9. 60 + 6
Step-by-step explanation:
1) because if you add it a lot of times you will get a bad answer. But if you do the math like this 48 7 6 = 8. 54 7 6 = 9. 60 + 6.
2) well 48 7 6 = 8. 54 7 6 = 9. 60 + 6= 75.6 right. So the picture frame is 5 inches
Step-by-step explanation:
A regular hexagon is inscribed in a circle with radius 9 cm. Find the area
Answers
Answer:
121.5sqrt(3)
Step-by-step explanation:
Ok, so all regular hexagons are made out of 6 equilateral triangles. If the hexagon is inscribed in the circle, the radius lines up with a side of one of the 6 equilateral triangles and you get 6 equilateral triangles with a side length of 9.
The formula for an equilateral triangle's area is (a/2)^2 * sqrt(3) where a = side length. That means we just plug in 9 to find the area of one of these six triangles. We get 20.25sqrt(3).
We multiply this by 6 (to find the sum of the areas of 6 equilateral triangles) and get 121.5sqrt(3)
The area of the hexagon will be 210.4 cm².
What is a hexagon?The definition of a hexagon in mathematics and geometry is a polygon with six straight sides that is closed in two dimensions.
Given, a circle with a radius of 9 cm. which have a regular hexagon whose all corner touch the circle. If we draw a radius of a circle at the corner of the hexagon. then we get six equilateral triangles.
A regular hexagon is 6 equilateral triangles of side r and area
Area of triangle = (r/2)(√3r/2)
so the total area is
A(hex ) = (6/4) √3r² = 3√3(r²)/2
r = 9m so
A = 210.4m²
Hence the Area of the given hexagon is 210.4 square meters.
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.
3. Ada 7 to 3 times of a number will
give you 66 if that number is a
9
Answers
Answer:
Step-by-step explanation:
Let the no. be x
3 times the no. will be 3x
adding 7 to 3 times the no. will be 3x + 7
the result is 66 so it will be 3x + 7 = 66
Hope this helps
plz mark as brainliest!!!!!
what is the midpoint between point A and B
Answers
Answer: (-1,4) is the answer
NEED HELP ASAP!
Which represents the symbolic notation of the compound statement below?
“Memorial Day is in July or parallel lines intersect.”
Answers
Answer:
Option (A)
Step-by-step explanation:
Statement 'p':
"Memorial Day is in July"
Statement 'q':
"Parallel lines intersect"
Since both the statement are joined by the 'OR',
Statements p and q will be joined by disjunction represented by the sign (∧).
Therefore, two statements will be represented as,
p ∧ q
Option (A) will be the correct option.
If y varies drectly with x
and y= 4.5 when x= 2.5,
what is y when x= 12?
Answers
So we are given x which is 12 so in order to solve this you just substitute x with 2 in the next equation 12+x=y/ 12+2=14
The x values of a function is the output true or false
Answers
Answer: False
Explanation:
X is input, y is output
4÷6\7 blank 4
I have to figure out if it is < > =
Answers
Answer:
<
Step-by-step explanation:
because 4/6/7 is less than 0
Answer:
2/21 < 4
Step-by-step explanation:
Lets break this up
4/6=2/3
2/3 / 7 = 2/3 * 1/7
2/21
Please help
8 square root 5 minus square root 45
Answers
Answer:
[tex]5 \sqrt{5 \: } is \: \: the \: \: answer \: \: of \: \: this \: \: question[/tex]
Pythagorean Therom.What is the length of segment AB?
Answers
Answer:
A square + B square = C square
Step-by-step explanation:
22. Part-Time Job
You work at a grocery store part-time. You estimate that you spend three-fifths of your time stocking shelves. You work 20 hours each week. How many hours of your work week do you spend stocking shelves?
Answers
Answer: 12
Step-by-step explanation:
You spend 20 hours working at a grocery store each week. You spend 3/5 of that time stocking shelves. You need to find out what 3/5 of 20 is.
Step 1: Turn 20 into a fraction
20 = 20/1
Step 2: Multiply
3/5 x 20/1 = 60/5
Step 3: Simplify
60/5 = 12