find an equivalent expression without parentheses (-2a^2+3a+1)(3a-2)
Answers
Answer:
-(2 a^2 - 3 a - 1) (3 a - 2)
-6 a^3 + 13 a^2 - 3 a - 2
a ((13 - 6 a) a - 3) - 2
Step-by-step explanation: hope this helps.
Combine to get:
-6a^3 + 13a^2 +3a - 2
Related Questions
An electrician plans to install solar panels on a rectangular section of roof with an area of
69
m
2
69m
2
69, start text, m, end text, squared.
Tyriq said
69
÷
7
1
10
69÷7
10
1
69, divided by, 7, start fraction, 1, divided by, 10, end fraction could represent the length of the section if the roof is
7
1
10
m
7
10
1
m7, start fraction, 1, divided by, 10, end fraction, start text, m, end text across.
Corbin said
69
÷
7
1
10
69÷7
10
1
69, divided by, 7, start fraction, 1, divided by, 10, end fraction could represent the number of solar panels that would fit if each panel was
7
1
10
m
7
10
1
m7, start fraction, 1, divided by, 10, end fraction, start text, m, end text long.
Whose interpretation makes sense in this context?
Answers
Answer: So it would be...
Step-by-step explanation:
1769
Answer:its not shown
Step-by-step explanation:
the numbers are weird
PLEASE HELP!!!!!!!!!!!!!!!!!!!!!!!!!!! 45 POINTS!!!!!!!!!!!!!!!!!!!!!
Answers
y + 19 = 23 PLSSS HELPPPP
Answers
Answer Explanation:
y + 19 = 23
-19. -19
——————
y = 4
:
Answer:
Y = 4 in this problem
Step-by-step explanation:
23 - 19 = 4 so Y = 4
Need Help
7th grade math
Answers
Answer:0.1x
Step-by-step explanation:
Write an equation of a line that passes through each pair of points. (5,7),(-8,-4)
Answers
Answer:
Y=11/13x+36/13
Hope this helps
Mark brainliest :)
To find the slope you use the formula y2-y1
x2-x1
Plug in the numbers…
(-4)-7
———
(-8)-5
This equals = 11/13
:)
Which ratios have a unit rate of three choose all that apply
Answers
Answer:
15/2 cups: 2 1/2
2 cups: 2/3 cup
2 1/2 cups: 5/6
Step-by-step explanation:
• 15/2 Cups: 2 1/2 Cups
• 2 Cups: 2/3 Cup
• 2 1/2 Cups: 5/6 Cup
1. A straight fence is constructed from posts 6 inches wide and separated by lengths of chain 5 feet long. A certain fence begins and ends with a post. If there are 7 posts, what is the total length of the fence?
Answers
Answer:
72
Step-by-step explanation:
First, we will multiply the number of posts (7) by the posts' width (6) to get 42.
Since there is a chain between each post, there are 6 chains.
Multiplying the number of chains (6) by the chains' length (5), we get 30.
The question asks us to find the total length of the fence, so we add 42 and 30 and get 72.
Hope this helps!
Which of the following are accurate descriptions of the distribution below?
Answers
Answer:
the most years of experience is 2, and the least years are 10 years
Step-by-step explanation:
How many solutions does the system have? { � = 9 � − 5 � = 9 � + 6 ⎩ ⎪ ⎪ ⎨ ⎪ ⎪ ⎧ y=9x−5 y=9x+6 Choose 1 answer: Choose 1 answer: (Choice A) Exactly one solution A Exactly one solution (Choice B) No solutions B No solutions (Choice C) Infinitely many solutions C Infinitely many solutions
Answers
Option (C) Infinitely many solutions
Help me pls Ineed help with this and I will mark you brainiest
Answers
Answer: 33/40 hope this helps
Step-by-step explanation:
Answer:
33/40 and 3.3
which number is a factor of 21?
Answers
Answer:
2 is a factor of 21
Step-by-step explanation:
Use what you know about powers to explain why a0 = 1
Answers
Find the number that makes the ratio equivalent to 7:84.
__:12
Answers
Answer: 7:84 is divided by 7 to get 12 which means has to be divided by 7 and 7 divided by 7 is 1 the new ratio is 1:12
Step-by-step explanation:cuz ik
explanation:
7:84
_:12
84 divided by 12= 7
so we divide 7 by 7 to make it equal and we get 1
-3.3-(-6) as an equivalent addition expression
Answers
Answer: 19.8
Step-by-step explanation: distribute -3.3 into -6 by multiplying them together
Hope this helped
PLEASE ANSWER ASAPPP
What is the solution for the system of linear equations shown in the graph? a coordinate grid with one line that passes through the points 0 comma 1 and 1 comma 2 and another line that passes through the points 0 comma 0 and 1 comma negative 3
Answers
Answer:
(-3/2, 1/2)
Step-by-step explanation:
Answer:
(-3/2, 1/2)
Step-by-step explanation:
Find the slope of the line that passes through (8, 5) and (3, 1)
PLEASE HELP
Answers
Answer: m = 4/5
Step-by-step explanation:
Use the slope formula
\(y_{2}-y_{1}/ x_{2} - x_{1}\)
Let's plug in the points:
5 - 1 / 8 - 3
4/5
So, m=4/5
Answer:
A) \(\frac{4}{5}\)
Step-by-step explanation:
Slope formula given 2 points:
\(\frac{y_{2}-y_{1}}{x_{2}-x_1}\)
Our points are (8,5) and (3,1)
Substitute:
\(\frac{1-5}{3-8} \\=\frac{-4}{-5}\)
negatives cancel out:
=\(\frac{4}{5}\)
Hope this helps! :)
Please help!
The difference between -7/9 and 4/9 is _____.
1 2/9
-1 2/9
1/3
-1/3
Answers
Answer:
-1/3
Step-by-step explanation:
The difference is simply just between 7 and 4, which is 3, but -3/9 simplified is -1/3.
Hope this helps!!
That’s what I got
What is the equation of the line graphed?
a. y = 3x
b. y = 3x - 2
c. y = -3x - 2
d. y = -3x + 2
please include and explanation thx <3
Answers
Because i know as soon as the line goes through the y-axis that number is your y-intersect and for the slope from the first point to the second point you go up 3 and over 1 and 3/1 is equal to 3 which gives your answer y=3x-2
Ill give brainiest to, whom ever gets this correct.
Answers
Answer:
C. area = radius/2 × circumference.
Step-by-step explanation:
Answer:
3
Step-by-step explanation:
Area can not = circumference without dividing it so 4 is wrong
Keira said that if 6 tickets are sold, there should be 2 tickets left. Is Keira correct?
Answers
According to Keira, if 6 tickets are sold, there should be 2 tickets left. However, we don't have any information about the initial number of tickets available.
If the total number of tickets initially was 8, and 6 tickets were sold, then there would indeed be 2 tickets left, supporting Keira's statement.
However, if the total number of tickets initially was less than 8, or if the statement doesn't specify the initial number of tickets, we cannot determine if Keira's statement is correct.
Therefore, without additional information, we cannot determine the accuracy of Keira's statement.
Pls help! Will give brainliest!!
Answers
Considering area (A) of garden as 30 square feet:
30 = x(2x+7)
Now we need to expand it:
x(2x+7) = 2x^2 + 7x
2x^2 + 7x = 30
Adding this into an Algebra calculator gives us 5/2 or 2.5
So x = 2.5
To prove this:
2(2.5) + 7 = 12
14 * 2.5 = 30
(2x+7) x = 30
you can distribute to make this easier
2x^2 + 7x = 30
you can plug this into quadratic formula by setting the equation =0, so:
2x^2 +7x -30 = 0
where 2x^2 = a
7x = b
and -30 = c
you can plug this into your calculator and get an answer of
X = 2.5
PLEASE HELP ME!!!!!!!!!!!!!!
Answers
Answer:
9
Step-by-step explanation:
triangle is a right angle triangle, using pythagoras theorem
15^2 − 12^2 = 81
\(\sqrt{81} =9\)
First person is right
Answer:
9
Step-by-step explanation:
triangle is a right angle triangle, using Pythagoras theorem
15^2 − 12^2 = 81
Square root of 81 is 9
please help me i will give brainliest to first person to anwser.
Answers
First we start with the formula for cylinders v=(pi)r(squared)h filled in Thats v=(3.14)(8 squared) (8) which brings us to the answer 1607.68 but you must round to the nearest tenth aka 1607.7
Answer:
The first option, V ≈ 1607.7 in²
Step-by-step explanation:
Find the volume of the given cylinder.
\(\begin{center}\framebox{\parbox{4cm}{\textbf{Volume of a Cylinder:}\\[2ex]The volume of a cylinder with radius $r$ and height $h$ is given by the formula:\\[2ex]\center{$V = \pi r^2 h$} \\ \\}}\end{center}\)
Given:
r = 8 in
h = 8 in
π = 3.14
Find:
V = ?? in³
\(\hrulefill\)
Now solving,
Substitute the given values into the formula:
=> V = (3.14)(8)²(8)
Using a calculator to simplify:
=> V = 1607.68 in²
Rounded to the nearest tenth:
∴ V ≈ 1607.7 in²
Thus, the first option is correct.
A triangular prism is attached to a rectangular prism as shown below.
If w = 8 inches, x = 5 inches, y = 20 inches, and z = 11.3 inches, what is the total surface area of the EXTERIOR FACES of the figure?
(Answer choices in picture!!) (I WILL GIVE BRAINLIEST)
Answers
Surface area of the triangular prism:
The triangular prism has two triangular faces and three rectangular faces.
The triangular faces have base (x) of 5 inches and height (y) of 20 inches. The surface area of each triangular face is (1/2) * base * height = (1/2) * 5 * 20 = 50 square inches.
The rectangular faces have dimensions (w, y, and z) of 8 inches, 20 inches, and 11.3 inches, respectively. The surface area of each rectangular face is length * width. Adding the surface areas of the three rectangular faces, we get: 2 * (w * y) + 2 * (w * z) + 2 * (y * z) = 2 * (8 * 20) + 2 * (8 * 11.3) + 2 * (20 * 11.3) = 320 + 180.8 + 452 = 952.8 square inches.
Surface area of the rectangular prism:
The rectangular prism has six rectangular faces.
The dimensions of the rectangular prism are (w, x, and y) of 8 inches, 5 inches, and 20 inches, respectively. The surface area of each rectangular face is length * width. Adding the surface areas of the six rectangular faces, we get: 2 * (w * x) + 2 * (w * y) + 2 * (x * y) = 2 * (8 * 5) + 2 * (8 * 20) + 2 * (5 * 20) = 80 + 320 + 200 = 600 square inches.
Total surface area of the exterior faces:
To find the total surface area of the exterior faces, we add the surface areas of the triangular prism and the rectangular prism: 50 + 952.8 + 600 = 1,602.8 square inches.
Therefore, the total surface area of the exterior faces of the figure is approximately 1,602.8 square inches. However, none of the given answer choices match this value. Please recheck the given dimensions or options provided.
What is the measurement of the longest line segment in a right rectangular prism that is 11.2 centimeters long, 6.6 centimeters wide, and 6 centimeters tall?
Answers
Answer:
Step-by-step explanation:
3.1313109
Answer: the answer should equal 3.131
Step-by-step explanation: as this is the measurement of the longest line in right rectangular prism.
Please got brainliest
Pls Help with this Question!
The cordinates of the verticies of triangle ABC are A(1, -1), B(1,4) and C(8,4). What is the length, in units, of the line segment that connects vertex a and vertex b?
BRAINLIEST!!!!!!!!!!!!!!!!!
Answers
Answer:
Step-by-step explanation:
10
help quick! math linear functions
Answers
Answer:-5 it is point slope form and it is asking for m which is -5
Step-by-step explanation:
Answer:
-5
Step-by-step explanation:
SOLVE FOR x IN THE DIAGRAM BELOW
Answers
5x+80=180
5x=100
ANSWER IS x=20
So to check if the answer is correct:
Angle 3x is 3x20 = 60 degrees
Angle 2x is 2x20= 40degreee
60+40+80= 180 degrees
3 x 20 = 60
2 x 20 = 40
60 + 40 = 100
100 + 80 = 180
180°
I am probably wrong but have a good day :)
To find the quotient of 156.38 and 100, move the decimal point in 156.38 (two four three five) places to the (left,right)
Answers
Answer:
Move the decimal two times to the left and you get 1.5638
To make a number pattern, Shana used the rule "Add 3," with a whole number as the starting number. Which statement must be true about Shana's list of numbers?
Answers
Answer:
you didnt put enough context in your question but if shana kept using three she would have mixed even and odds in her numbers if you could give more context to the question id be glad to help more