Answers
Answer:
1)
(x + 3)(x + 4) = x^2 + 4x + 3x + 12 = x^2 + 7x + 12
Instead of multiplying 3 and 4 the student added them which gave them the answer of 7 when the correct answer is 12.
2)
a) x^2 + x - 2
b) x^2 - 7x + 10
c) 4x^2 - 1
d) x^2 + 10x + 25
Step-by-step explanation:
a. (x - 1)(x + 2)
x(x) - 1(x) + 2(x) - 1(2)
x^2 - 1x + 2x - 2
x^2 + x - 2
------------------------------------------
b. (x - 5)(x - 2)
x(x) - 5(x) - 2(x) - 5(-2)
x^2 - 5x - 2x + 10
x^2 - 7x + 10
------------------------------------------
c. (2x + 1)(2x - 1)
2x(2x) + 1(2x) - 1(2x) + 1(-1)
4x^2 + 2x - 2x - 1
4x^2 - 1
------------------------------------------
d. (x + 5)^2
(x + 5)(x + 5)
x(x) + 5(x) + 5(x) + 5(5)
x^2 + 5x + 5x + 25
x^2 + 10x + 25
Related Questions
Write the equation
Show how to solve
Answers
what Is the answer to 1/6 + 2/3
Answers
Answer:
5/6
Step-by-step explanation:
When adding fractions, you must ensure the denominator is the same in both fractions.
In this case, the 3 can be multiplied by 2 to equal 6, the other denominator.
When multiplying fractions to create a common denominator, you must multiply the both the numerator and the denominator by the same value, to ensure that the fraction is still equivalent.
2/3 × 2/2 = (2×2)/(3×2) = 4/6
Replace 2/3 with its equivalent 4/6.
Now you will add the numerators together.
1/6 + 4/6 = (1+4)/6 = 5/6
Your final answer is 5/6
Answer:
5/6
Step-by-step explanation:
2/3--> 4/6 (GCF)
4/6+1/6=5/6
:)
witch division problem does the number line below best illustrated
A 10 ÷2= 5
B 15 ÷3= 5
C 50 ÷5=10
D 20 ÷10=5
Answers
In what way does the power of judicial review act as a check?
A. Courts can review acts of other courts
B. Courts can impeach the president
C. Courts can declare congressional acts unconstitutional
D. Courts can check on other courts to make sure they are acting constitutionally
Answers
Answer:
a
Step-by-step explanation:
If ABCD is a parallelogram, what is the length of BD? Show your work and refer to the attached image.
Answers
Answer:
the answer is 7 ok
Step-by-step explanation:
7 answer
Part A: Valerie is remodeling her home. She decides to replace the old carpet in the living room and wants to know how much carpet she needs. You can see from the diagram of the living room that this is not a simple shape. Complete the steps below to find the area of the room, which is the amount of carpet Valerie needs for her project.
Part A
Help Valerie decompose the shape into the fewest simple shapes. Which shapes can
you divide the figure into? How many of each shape do you get?
Part B: In how many different ways can you divide the shape to get the same number and type of shapes you obtained in part A?
Answers
Answer:
She can decompose it into two rectangles or a triangle
Step-by-step explanation:
I just did this on EDMENTUM its right!
Tyler needs to complete this table for his consumer science class. He knows that 1 tablespoon contains 3 teaspoons and that 1 cup contains 16 tablespoons.
What are the values of t, x, y, and c ?
Answers
Answer:
Step-by-step explanation:
This table reflects the proportional relationship amongst number of teaspoons, number of tablespoon, number of cups.
In other words these three measures are proportional.
By taking proportionality ratio of 'number of tablespoons' and 'number of cups' first.
[tex]\frac{12}{48}=\frac{C}{3}[/tex]
C = [tex]\frac{12\times 3}{48}[/tex]
C = 0.75
Similarly, [tex]\frac{y}{2}=\frac{12}{C}[/tex]
[tex]\frac{y}{12}=\frac{2}{0.75}[/tex]
y = [tex]\frac{24}{0.75}[/tex]
y = 32
Now, [tex]\frac{t}{36}=\frac{y}{12}[/tex]
[tex]\frac{t}{36}=\frac{32}{12}[/tex]
t = 96
By the same rule,
[tex]\frac{36}{x}= \frac{12}{48}[/tex]
x = [tex]\frac{48\times 36}{12}[/tex]
x = 144
Therefore, complete table will be,
Number of teaspoons Number of tablespoons Number of cups
96 32 2
36 12 0.75
144 48 3
PLEASE HELP ASAP
Maria recently hired a plumber to do some necessary work. On the final bill, Maria was charged a total of $473. The amount listed for parts was $335 and the rest of the bill was for labor. If the hourly rate for labor was $46, how many hours of labor was needed to complete the job?
(A) First write an equation you can use to answer this question. Use x as your variable. The equation is __________________
(B) Solve your equation in part (A) to find the number of labor hours needed to do the job. Answer: The number of labor hours was ________________________
Answers
Answer:
A)473 = 335 - 46x
B) 3
Step-by-step explanation:
A)
473 = 335 - 46x
x = the hours of labor needed.
B)
Solve for x
473 = 335 - 46x
subtract 335 from both sides
138 = 46x
divide both sides by 46
3 = x
Answer:
A) [tex]46x+335=473[/tex] B)[tex]x=3[/tex]
Step-by-step explanation:
473 is the total amount, which means it is the end result
335 represents a constant since it is a base price
the hourly rate is a variable, due to the fact that it depends on how many hours he spent working.
variable + constant = total price
[tex]46x+335=473[/tex]
Now to solve this, first subtract [tex]335[/tex] from both sides
[tex]46x=138[/tex]
Next divide both sides by [tex]46[/tex] to isolate the variable
[tex]x= \frac{138}{46}[/tex]
This can be simplified to: [tex]x=3[/tex]
plz mark me brainliest. ;)
Can someone pls help me with my ela assignments I’ll pay u 20$ if it’s right cashapp or PayPal
Answers
Find the cot 40° . Round to the nearest hundredth when applicable.
Answers
Answer:
1.19175359
Step-by-step explanation:
Use ma1hway
Match the equations with the correct solution.
a. All real numbers
b. x= -2
c. x=3
d. no solution
e. x=1
1. 3x +4=7x -8
2. 2x = 7x - 5
3. 5x -8= 5x + 12
4. 8x +4= - 2x - 16
5.-3x +5= - 3x + 5
Answers
Answer:
a-5, b-4, c-1, d-3, e-2
Step-by-step explanation:
1) 3x+4 = 7x-8
-4x = -12
x = -3 (c)
2) 2x = 7x-5
-5x = 5
x = 1 (e)
3) 5x-8 = 5x+12
0x = 20
no solution (d)
4) 8x+4 = -2x-16
10x = -20
x = -2 (b)
5) -3x+5 = -3x+5
all real numbers (a)
Aight come on i need the answer to this question
Answers
Answer:
A, E, F
Step-by-step explanation:
2/9 is the fraction equivalent of 0.222222 repeating. 4/15 is the fraction equivalent 0.266667 repeating. 7/11 is the fraction equivalent of 0.636364 repeating.
Frankie is comparing the monthly costs of two cellphone plans. Talk-It-Up
offers unlimited talk, text, and data for $95 each month. Talk-is-Cheap offers
unlimited talk and text for $35, plus $10 per gigabyte of data per month. This is the word and the quotations is in the photo I want help you will get 35 points who solve it!
Answers
Answer:
Talk-It-Up is the best value
Step-by-step explanation:
TIU=$95/month
TIC=$35/month + $10/gigabyte
Data usage=8 gigabytes
TIC=$35+$10(8)=$35+$80=$115
TIU is cheaper
Frankie is comparing the monthly costs of two cellphone plans:
-Talk-It-Up is Cheaper
"Comparing the monthly costs"Let us assume:
TIU = Talk-It-Up.
TIC = Talk-is-Cheap
Given:
TIU=$95/month
TIC=$35/month + $10/gigabyte
Data usage=8 gigabytes
TIC=$35+$10(8)TIC=$35+$80TIC=$115Since, 95 [tex]\ge[/tex]115.
TIU is cheaper.
Learn more about "comparing the monthly costs":
https://brainly.com/question/13183204?referrer=searchResults
how many solutions does -3x + 3y =4 -x + y =3 have?
-3x + 3y =4
-x + y =3
0
1
2
infinite
Answers
Answer:
0
Step-by-step explanation:
-3x + 3y = 4
-x + y = 3
3y = 3x + 4
y = x +4/3
-x + (x+4/3) = 3
4/3 = 3
This is an equality there for no solution.
Can someone explain how to simplify rational expressions in a simple way I don't understand thanks :(
Answers
True or false. If 1/4 kg of beef costs $6, then 2/3 kg of the beef costs $16
Answers
I need help please!!!!!!
Answers
????????????????????????
Answers
someone please help me i really need it‼️
Answers
Answer:
63 cm³
Step-by-step explanation:
Multiply length × width × height.
3×3×7 = 63
Answer:
Volume = 63 cubic centimeters
Step-by-step explanation:
The given figure is a rectangular one. And in order to find the volume, you'll have to use the formula.
Formula:
Volume = L x W x H
L = 7 cm
W = 3 cm
L = 3 cm
Calculations:
3×7×3 = 63 cubic centimeters
Round the height of the cabinet to the nearest centimeters
130.7
Answers
Answer:
131
Step-by-step explanation:
if the number to the right of the decimal is lower than 5 it stays the same , but if it is higher then 5 it gets raised to the next number after that .
Which expression is equivalent to 9/8
Answers
Find the equation of the linear function represented by the table below in slope-
intercept form.
Answers
Answer:
f(x) = 5x - 5
Step-by-step explanation:
Let the equation of the linear function is,
f(x) = mx + b
Here, m = Slope of the graph
b = y-intercept
Slope of the line passing through [tex](x_1,y_1)[/tex] and [tex](x_2,y_2)[/tex] is given by,
m = [tex]\frac{(y_2-y_1)}{(x_2-x_1)}[/tex]
From the table attached,
Slope of the line passing through (2, 5) and (6, 25) will be,
m = [tex]\frac{25-5}{6-2}[/tex]
m = 5
Equation of the linear function will be,
f(x) = 5x + b
Since, a point (10, 45) lies on the function,
45 = 5(10) + b
b = 45 - 50
b = -5
Equation of the linear function will be,
f(x) = 5x - 5
In order to make a safe parachute landing from a mountain top, you must be at least 9,000 feet in the air. At the top of Mount Montgomery, the angle of depression is 19 degrees looking diagonally down at a landing zone that is 16000 feet away from the middle of the mountain. Determine if it is safe to use a parachute from the top of this mountain.
Answers
Answer:
Send me a picture I can help u
Answer:
Step-by-step explanation:
tan19=h/16000
h=16000tan19
h=5509.24ft
So it is less than 9000ft and is unsafe to use the parachute.
what is the inequality for n + 7 > 11
Answers
Answer:
n > 4
Step-by-step explanation:
First you have to move the terms not containing n to the right side of the equality. The inequality form would be n>4 and the Interval notation would be (4, ∞).
Hope this helps:)
Answer:
EASY PEASY
n = -18
Step-by-step explanation:
Simplifying
n + 7 = -11
Reorder the term:
7 + n = -11
Solving
7 + n = -11
Solving for variable 'n'.
Move all terms containing n to the left, all other terms to the right.
Add '-7' to each side of the equation.
7 + -7 + n = -11 + -7
Combine like terms: 7 + -7 = 0
0 + n = -11 + -7
n = -11 + -7
Combine like terms: -11 + -7 = -18
n = -18
Simplifying
n = -18
What is the answer please help me
Answers
Answer:
am not really sute bt its ..no
6a+3a+8b+a-5b Somebody help me I need the answer ASAP
Answers
Answer:
10a+3b
Step-by-step explanation:
6a+3a+8b+a-5b
Combine like terms
6a+3a+a -5b+8b
10a +3b
Answer:
10a + 3b
Step-by-step explanation:
6a + 3a + 8b + a - 5b
10a + 8b - 5b
10a + 3b
Insta: 25k_kemConvert the expression (√5)(∛5) to exponential form. Show your work
Answers
solve for x
solve for x
solve for x
Answers
Answer:
4x+12=120°
X=12-4=120°
X=8=120
X=120/8
X=15
Answer:
Step-by-step explanation:
4x + 12 =
-12 = -12
4x = -12
/4 /4
x = -3
Which of the following are characteristics of the cubic parent function? Select all that apply .
A. It passes through quadrants and II.
B. It has a domain and range of all real numbers.
C. It is symmetric about the y-axis.
D. It goes through the origin.
E. It is a straight line.
Answers
9514 1404 393
Answer:
B, D
Step-by-step explanation:
The cubic function is plotted in the attachment. It is a curve found in quadrants I and III, so is not symmetric about the y-axis.
Its domain and range are all real numbers, and it passes through the origin.
Answer:
Step-by-step explanation:
Geometry Help!
Please only answer if you know the answer. Look at the image below to answer the question.
Be sure to show all of your work and explain your thinking.
I posted 3 of these, so if you understand it, please go and check them out.
If you do not know the answer use the comment section, don't answer my question with a comment. Thanks, Good Luck!
Answers
Answer:
Step-by-step explanation:
Use the Law of Sines
FE/sin38=18/sin90
FE=18sin38=11.08
DF/sin52=18/sin90
DF=18sin52=14.2
Answer:
FE = 11.08, DF = 14.18Step-by-step explanation:
Use trigonometric ratios:
sin = opposite / hypotenusecos = adjacent / hypotenuseApply to the given triangle
Side FE
FE / DE = sin 38° (or cos 52°, the value is same)FE / 18 = sin 38°FE = 18 sin 38°FE = 11.08Side DE
DF / DE = sin 52° (or cos 38°, the value is same)DF / 18 = sin 52°DF = 18 sin 52°DF = 14.18