Identify who made the error and what she did wrong.
1) Amelia made the error when she added 3.
2) Amelia made the error when she subtracted 4x.
3) Susie made the error when she subtracted 2.
4) Susie made the error when she subtracted 2x.
Answers
When you are moving the number to the other side, you are supposed to change the sign.
She was supposed to add 2, not subtract.
Related Questions
Factor the following polynomial completely.
5x ^3+ 2x^2 – 45x –18
Answers
Answer:
(5x+2)(x-3)(x+3)
Step-by-step explanation:
factor x²
5x ³+ 2x² – 45x –18
x²(5x+2)-45x-18
factor 5x+2
(5x+2)(x²-9)
factor using the method of a²-b²=(a-b)(a+b)
(5x+2)(x-3)(x+3)
A DVD has a diameter of 18 centimeters. What is the area of the DVD? Round your answer to the nearest hundredth. Use 3.14 for π.
Answers
Answer:
254.34 cm²
Step-by-step explanation:
A = πr2 Use the formula.
A = π(9)2 Substitute. Use 9 for r.
A ≈ 3.14 × 92 Substitute. Use 3.14 for π.
A ≈ 3.14 × 81 Evaluate the power.
A ≈ 254.34 Multiply.
The area of the DVD is about 254.34 cm².
Fill in the blanks below in order to justify whether or not the mapping shown
represents a function.
Set A: 1,2,9
Set B: 0,4,6,5
Answers
Answer:
wheres the picture?
Step-by-step explanation:
Elle earned $45 last month babysitting. This
month she earned $35. What is the
approximate percent of decrease?
Answers
Answer:
40%
Step-by-step explanation:
this is the question
Answers
Answer:(1,1)
Step-by-step explanation:
Its asking where both linear and curve lines are being hit,
(fxg)(0)= 1,1
Which picture shows a rotation of the flag?
Answers
Answer:
it has no pic
Step-by-step explanation:
answer quick please if fast and correct i will give the brainly thingy
Answers
Step-by-step explanation:
You divide each term by -2
A weather station on the top of a mountain reports that the temperature is currently 0°C and has been falling at a constant rate of −8°C per hour. What was the temperature 1 hour ago?
Answers
Answer:
Step-by-step explanation:
Absolute zero, the lowest temperature possible, is defined as being exactly 0 K and −273.15 °C. Until 19 May 2019, the temperature of the triple point of water was defined as exactly 273.16 k
Emilia and Sydney went out to dinner. The bill came to $48. They want to leave a 20% tip and
split the bill. How much do they each pay?
$9.60
$28.80
$57.60
$68.00
Answers
Answer:
Option B is correct.
Step-by-step explanation:
Total bill = $48
Tip = 20%
Amount of tip = 20% of 48
Amount = [tex]\frac{20}{100}*48[/tex]
Amount = 0.2 * 48
Amount = $9.60
Total bill with tip = 48 + 9.60 = $57.60
Dividing by 2 as they are spliting the bill.
Each pays = [tex]\frac{57.60}{2}=28.80[/tex]
Therefore,
Option B is correct.
What is this answer ?? Please help!!
Answers
[tex]{ \huge{ \green{ \underline{ \rm{Given}} \colon}}}[/tex]
[tex]{ \large{ \red{➾ \: \: \bf{Perimeter \: \: of \: \: square = 32 \: miles}}}}[/tex]
[tex]{ \huge{ \orange{\underline{ \rm{To \: \: find}} \colon}}}[/tex]
[tex]{\large{\purple{✭\: \:\bf{\underline{\underline{Side \: \: of \: \: square}}}}}}[/tex]
[tex]{ \large{ \blue{✮ \: \: { \boxed {\bf{Perimeter \: \: of \: \: square = 4 \times sides}}}}}}[/tex]
[tex]{ \large{ \pink{⇝ \bf{32 = 4 \times a}}}}[/tex]
[tex]{ \large{ \purple{⇝ \: \bf{a = \dfrac{ \cancel{32} \: {}^{8} }{ \cancel{4} }}}}}[/tex]
[tex]{ \large{ \orange{ ∴ \: \rm{Side \: \: of \: \: square(a) ={ \boxed{\boxed{ \rm{8 \: \: miles}}} \: \: Ans.}}}}}[/tex]
a buyer purchased 8 blue shirts and X red shirts. The ratio of blue shirts to red shirts purchased was 2:5. How many red shirts did the buyer purchase?
Answers
Answer:
20
Step-by-step explanation:
b:r
2:5
8:x 8/2=4
5*4=20
Solve the inequality for x.
x-c/d > y (for d > 0)
Answers
The solution for x of the inequality x-c/d > y (for d > 0) is x > d * y + c.
Here,
To solve the inequality for x, we'll isolate x on one side of the inequality:
Given inequality: (x - c) / d > y
First, we'll multiply both sides of the inequality by d to get rid of the fraction.
Remember that since d > 0, we don't need to reverse the inequality:
d * [(x - c) / d] > d * y
Next, the d on the left side cancels out, and we have:
x - c > d * y
Now, to isolate x, we'll add c to both sides of the inequality:
x - c + c > d * y + c
x > d * y + c
So the solution for x is x > d * y + c.
To learn more on inequality click:
https://brainly.com/question/28841069
#SPJ4
1. Which expression can be factored into the form (ax + b)(ax - b), where
a and b are rational numbers?
4n2 - 81
2n2 - 49
2n2 + 49
4n2 + 81
Answers
The expression that can be factored into the form (ax + b)(ax - b), where a and b are rational numbers, is 4n² - 81.
What are the factors?A number or algebraic expression that evenly divides another number or expression—i.e., leaves no remainder—is referred to as a factor.
Here,
A.
4n² - 81,
This can be factored as (2n - 9)(2n + 9), which is of the form (ax + b)(ax - b).
B.
2n² - 49,
This can be factored as (n - 7√2)(n + 7√2), but not in the form (ax + b)(ax - b).
C.
2n² + 49:
This cannot be factored into the form (ax + b)(ax - b) using rational numbers. We can factor it over the complex numbers as (n + i√49/2)(n - i√49/2), where i is the imaginary unit, but this does not satisfy the conditions of the problem.
D.
4n² + 81,
This cannot be factored into the form (ax + b)(ax - b)
Therefore, the expression that can be factored into the form (ax + b)(ax - b), where a and b are rational numbers, is 4n2 + 81.
Learn more about Factors here:
https://brainly.com/question/24182713
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An ipod shuffle costs $99.00. The sales tax rate is 8%. What is the total cost of the ipod shuffle including tax?
Answers
The equation of the line
Answers
9-0
———. = 1
0-9
hi pls help i’ll give brainliest if you give a correct answer
Answers
Answer:
0.47..................
Step-by-step explanation:
..........
Use the graph to answer the question.
store
bank
VA
10-
9-
8-
7
6-
5
4
3
2
1
0-
0
park
school
1 2 3 4 5 6 7 8 9 10 11 12
Which are the coordinates of the bank?
O A. (0,3)
B. (0,7)
O c. (3,7)
OD. (7,3)
Answers
Maybe 0.7 the way you put it made it confusing
find the trigonometric ratio
this is geometry with trig
Answers
Answer:
tanZ = [tex]\frac{20}{15}[/tex]
Step-by-step explanation:
tanZ = [tex]\frac{opposite}{adjacent}[/tex] = [tex]\frac{XY}{ZY} }[/tex] = [tex]\frac{20}{15}[/tex]
Please help!!!!
Simplifying Radical Expressions:
To simply the square root of a number, create a factor tree and any two identical numbers may come out of the radical. Buddy system! If there is no buddy, it must stay under the radical.
Answers
Answer:
√32=5.65
I hope it's helps you
The cost for 16 ounces of cheese is $3.20. What is the cost for 20 ounces of cheese? The cost for 20 ounces of cheese is $
Answers
Answer:
Step-by-step explanation:
Last Friday Bill had $22. Over the weekend he recieved some money for washing the dog. He now has $41. How much money did he recieve?
Answers
Answer:
He received 19 dollars
Step-by-step explanation:
On Friday he had $22 and now he has $41.
We will need to do the reverse operation of addition, and that will be subtraction.
$41 - $22 = $19
Helppppppppppp!!!!!!!!!!!!!!
Answers
Answer:
-3=-8, -2=-4, 1=8, 3=16, 4=20
Step-by-step explanation:
Plz mark me as Brainly
Select the statement that is FALSE.
A.
A square has four right angles and four equal sides.
B.
A rectangle has four right angles.
C.
A rhombus has four right angles.
Answers
Answer:
C
Step-by-step explanation:
if a rhombus has 4 right angles it wpuld be a square
can anyone help me on this?
Answers
Answer:
The recursive formula for 01. is -4 and for 02. The formula is -1
Step-by-step explanation:
I recently bought a sheet of postage stamps with a dragon theme. If each stamp is 7/8 inch wide and 1-1/4 inches long what's the area and perimeter of each stamp?
Answers
Answer:
[tex]1\dfrac{3}{32}\ \text{inches}^2[/tex]
[tex]4\dfrac{1}{4}\ \text{inches}[/tex]
Step-by-step explanation:
w = Width of a stamp = [tex]\dfrac{7}{8}\ \text{inch}[/tex]
l = Length of a stamp = [tex]1\dfrac{1}{4}\ \text{inch}[/tex]
Area is given by
[tex]A=lw\\\Rightarrow A=\dfrac{7}{8}\times 1\dfrac{1}{4}\\\Rightarrow A=\dfrac{7}{8}\times \dfrac{5}{4}\\\Rightarrow A=\dfrac{35}{32}\\\Rightarrow A=1\dfrac{3}{32}\ \text{inches}^2[/tex]
The area of each stamp is [tex]1\dfrac{3}{32}\ \text{inches}^2[/tex]
Perimeter is given by
[tex]P=2(l+w)\\\Rightarrow P=2(\dfrac{7}{8}+\dfrac{5}{4})\\\Rightarrow P=2\times \dfrac{17}{8}\\\Rightarrow P=\dfrac{17}{4}=4\dfrac{1}{4}\ \text{inches}[/tex]
The perimeter of each stamp is [tex]4\dfrac{1}{4}\ \text{inches}[/tex].
What is the volume of this cube?
Answers
Answer:
1 cubic centimeter
Step-by-step explanation:
volumn of a cube = side3
=1³
= 1 cm³
PLEASE HELP PLEASE THIS IS DUE IN 22 MINS
Answers
Answer:
whats due in 22 minutes?
Step-by-step explanation:
BRAINLIEST FOR THE CORRECT AWNSER!! What is the measurement of
Answers
I doubled checked the correct awnser is D
The formula for calculating the amount of money (M) in an account
after t years is M = P(1 + r)t, where P is the initial value and r is the
annual interest rate as a decimal. Susan wants a balance of $500 after
10 years. How much should she initially deposit into her account that
earns 3%?
$6,719.58
$671.86
$36.27
O $372.05
Answers
A rectangle has perimeter 200 feet.
1. Let L represent the length of the rectangle. Write an equation for the width W in terms of L.
2. Write a function A(L) that represents the area of the rectangle with length L.
Answers
Answer:1. (200-2L)/2 2.L x (200-2L)/2=A
Step-by-step explanation:
Answer:
Part 1)
[tex]W=100-L[/tex]
Part 2)
[tex]A(L)=L(100-L)[/tex]
Step-by-step[tex]W = 100-L[/tex] explanation:
We are given a rectangle with a perimeter of 200 feet.
Part 1)
The formula for perimeter for a rectangle is:
[tex]200=2(L+W)[/tex]
We can divide both sides by 2:
[tex]100=L+W[/tex]
And subtracting L from both sides yields:
[tex]W=100-L[/tex]
Part 2)
The area of a rectangle is given by:
[tex]A(L)=LW[/tex]
Since we solved for W earlier:
[tex]A(L)=L(100-L)[/tex]