Algebra question I don’t get it because you usually have to multiple A by C but there is no C in the problem.
Answers
And in this case, you are factorising in this question. You turn back into brackets basically.
We have:
72x^2 - 32
x^2 = x squared
factorising means finding the factor of.
(Forget the x squared for the moment to make life easier)
Factors of 72:
1 and 72
2 and 36
3 and 24
4 and 18
6 and 12
8 and 9
(9 and 8 = it repeats so we stop there)
And then factors of 32:
1 and 32
2 and 16
4 and 8
(8 and 4 = repeats so we stop there)
Notice how we see 8 twice in both factors of 72 and 32, this means that we use 8 as the main number we are going to multiply each of the 2 numbers in the brackets by. This is because it is the biggest common factor - this is what we have!
This is what we would have:
8(9-4)
BUT, that is not the answer!
Keep in mind we have the x squared too
But, 32 doesn’t have it?!!
It would be:
8(9x^2 - 4)
Do you get it??
Try to simplify it! Does it equal to 72x^2 - 32?
(And I am so very sorry for the long explanation, once you get the hang of it, it makes sense. Hope my explanation helped) :)
Related Questions
Question 10
In a store, a $250 dress is marked, "Save 35%". What is the sale price of the
dress? Justify your answer.
Answers
Answer: $162.50 is the answer
Step-by-step explanation: Multiply 250 by .35 and you get 87.5 which is the amount that is subtracted
If the radius is 40 ft, what is the area of the circle?
Answers
Answer:
A = pi(r)^2
A = pi(40)^2
A = 1,600pi sq. ft.
Therfore the answer is C.) 1,600 pi sq. ft.
I hope this helps you!!
Answer:
C - 1600[tex]\pi[/tex] sq. ft.
Step-by-step explanation:
Since the answer has to be in terms of pi, we can exclude that from the equation.
The formula to find the area of a circle is [tex]\pi r^2[/tex] where r is the radius. If we plug in 40 for r, we get 1600[tex]\pi[/tex].
What are the relationship between the sides, shape, and area of a scaled drawing to the actual object?
Answers
Answer:
The scale factor for area is found by squaring the scale factor for length. Thus the scale factor for area is s2. If this is reversed, a method is provided for solving the problem being investigated. The scale factor for area is 2.
Step-by-step explanation:
What number is represented by point A?
A number line going from 0 to 1. There are 4 equal spaces between 0 and 1. Point A is on the mark to the left of 1.
One-fourth
One-third
Three-fourths
Four-thirds
Answers
Answer:
3/4 or Three-fourths
Step-by-step explanation:
1. The number 'A' is between 0 and 1, indicating that its a fraction.
2. We see that there are 4 spaces between 1 and 0.
3. 'A' is on the third space.
Therefore, the number will be marked space/total no. of spaces
(If you find it confusing, try a few similar questions for practice.)
Hope it helps :)
Pls considering giving this a gud rating n marking it the brainliest <3
50 POINTSS!!! PLEASE HURRY!!!
Answers
The answer for number 3 is: a line can be drawn through at least two of the points.
The answer for number 4 is: on the line of best fit.
I hope this really helped out a lot. :)
Hurry please
If you need better or more pictures please tell me
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Answer:
Step-by-step explanation:
its that answer because i have done this before and know its the answer that is the answer
Which answer choice contains a system of equations?
Answers
Answer:B
Step-by-step explanation:
make a the subject of the formula
9a=10b
Answers
Answer:
1=ab
Step-by-step explanation:
you do mines 9a to both side with will lead you to 1
please answer these questions below in the picture.
Simplify each fraction.
Answers
Answer:
15)4/7
16)1/3
17)1/3
18)18/23
19)1/7
20)1/2
21)11/15
22)1/3
23)1/5
24)6/7
25)2/15
26)7/12
27)1/3
28)2/3
29)5/7
30)2/5
Step-by-step explanation:
15) divide by 9 and get 4/7
16) divide by 9 and get 1/3
17) divide by 6 and get 1/3
18) divide by 3 and get 18/23
19) divide by 4 and get 1/7
20) divide by 12 and get 1/2
21) divide by 36 and get 11/15
22) divide by 40 and get 1/3
23) divide by 36 and get 1/5
24) divide by 18 and get 6/7
25) divide by 8 and get 2/15
26) divide by 12 and get 7/12
27) divide by 12 and get 1/3
28) divide by 18 and get 2/3
29) divide by 36 and get 5/7
30) divide by 12 and get 2/5
Solve the equation 29 = v + 23 for v.
−52
−6
6
52
Answers
- 23 -23
v=6
Answer:
29
Solving Algebraic EquationsRulesTo solve, you must isolate the variable. This means moving the variable and it's coefficient to the other side of the equation with only the same variable on the same side with all the constants on the other side.
If you multiply, divide, add, subtract, square root, exponent both sides of the equation by the same value, that end value stays the same.
Terminology
Variable: Any letter than stands for a value than can be solved and change value. (i.e. x, y, z, a, etc.)
Coefficient: The number right before a variable (without being separated by an operator). It is a multiplication factor for a variable. Basically, it's just a way to express what you are multiplying a variable by.
If the coefficient is 1, it means [variable] * 1. 1[variable]
Q)Subtract 23 on both sides.
29 - 23 = v + 23 - 23
v = 29
pleaseee helpppp. is this right ???
Answers
Answer: Yes
Step-by-step explanation:
What's the mixed fraction of -35 over 24 (-35/24)?
Answers
Answer:
-1 11/24
Step-by-step explanation:
PLEASE HELLPPPP!!!! I HAVE NO IDEA WHAT IM DOING
Answers
Answer:
A
Step-by-step explanation:
I think A is the answer because Its the closest one to the plot and what question is asking for
what is 0.3113 rounded to the nearest thousandths?
Answers
Answer: 0.311
Step-by-step explanation:0.3113 the 3 is lower then 5 so the 1 stays the same
Question 10
Please help (Someone gave me the wrong answer and now I'm stuck)
Answers
Answer
20 is 5%
1 fifth of hunderd that is 20%
=20%
lalalshjsb
What is the circumference of a circle with a radius of 7 feet? Use 22 over 7 for π.
22 feet
44 feet
154 feet
616 feet
Answers
Answer:
44 feet because add it up and it's 7+22+7 and tt
The problem says: Jake cuts out five-pointed stars. They are different sizes, but they all have the same shape. The side lengths within each star are the same. To find the perimeter of each star, Jake uses the expression to find the perimeter of each star, Jake uses the expression 12E+1/2+4E-8.5+2E+8, where E is the side length of the star.
PART A: FIND THE PERIMETER OF A STAR WITH SIDE LENGTH OF 6 INCHES. SHOW YOUR WORK.
PART B. CHECK YOUR ANSWER TO PROBLEM 3 A. SHOW YOUR WORK.
Answers
Answer: 60
Step-by-step explanation: 12L+1/2=72.5
72.5-24-8.5+20
72.5-24=48.5-8.5=40
40+20=60
One of a tree's rings has a diameter of 6 inches. What is the circumference of the tree's rings? Use 3.14 for π
C = ? inches
? = missing answer
(will give thanks + 5 star rating)
Answers
Answer:
C=18.84
Step-by-step explanation:
C=2*3.14*r
r=diameter/2
Reason: 6 X 3.14
The length of Ruben’s rectangular backyard is 10 meters more than the width. If the perimeter of the backyard is 220 meters, what is the length of the rectangular backyard?
Answers
Answer:
60
Step-by-step explanation:
given: length = 10m + width
perimeter = 220
find length of backyard
Solution
let us assume width = x
length = 10 + width
10 + x
perimeter of rectangular backyard = 2( length + width)
= 220 = 2 ( 10 + x + x )
= 220 = 2 ( 10 + 2x )
= 220 / 2 = 10 + 2x
= 110 - 10 = 2x
= 100/2 = x = 50
so, according to above solution and Q.
width = x = 50
length = 10 + width = 10 + x = 10 + 50 = 60
So the answer is 60
Hope this helps and if I'm wrong I sincerely apologize
consider 2 1/2 divided by 1/4
(a) Write a real-world problem for the division.
(b) Create a model or write an equation for the division.
(c) Find the quotient for the real-world problem in part
(a). Show your work or explain your reasoning.
Answers
You want to know whether the students in your school enjoy the school lunch. You survey every student in your class. Is this survey biased or unbiased?
A)Unbiased because the sample only included the students in one class.
B)Biased because the sample only included the students in one class.
C)Biased because the sample included all the students in the class.
C)Unbiased because the sample included all the students in the class.
Answers
Answer: B
Step-by-step explanation:
A composite figure is shown.
A five-sided figure with two parallel sides. The shorter one is 16 feet. The height of the figure is 22 feet. The portion from the vertex to the perpendicular height is 8 feet. The portion from a point to a vertical line created by two vertices is 4 feet.
Which of the following represents the total area of the figure?
44 ft2
400 ft2
440 ft2
484 ft2
Answers
Answer:
The area of the composite figure can be calculated by breaking it down into separate geometric shapes and calculating the area of each shape. The figure can be divided into a rectangle and a triangle. The rectangle can be calculated by multiplying the length (16 feet) by the height (22 feet) resulting in 352 ft^2. The triangle can be calculated by multiplying the base (4 feet) by the height (8 feet) and dividing by 2, resulting in 16 ft^2. By adding the area of the rectangle and the triangle, we get 352 ft^2 + 16 ft^2 = 368 ft^2. So, the total area of the figure is 368 ft^2. Therefore, the correct answer is 440 ft2.
Step-by-step explanation:
above
If a five-sided figure with two parallel sides and the shorter one is 16 feet. The figure that represents the total area of the figure is: C. 440 ft2.
How to find the total area?The rectangle is formed by the two parallel sides, which are 16 feet long.
The height= 22 feet.
The area of the rectangle = 16 feet x 22 feet
The area of the rectangle = 352 square feet.
The triangle is formed by the vertex, the perpendicular height, and the 4-foot side. The area of a triangle is (base x height) / 2.
Since the base of this triangle is 8 feet and the height is 22 feet.
The area of the triangle = (8 x 22) / 2
The area of the triangle= 88 square feet.
The total area of the composite figure is :
Total area = 352 square feet + 88 square feet
Total area = 440 square feet
Therefore the correct option is C.
Learn more about total area here:https://brainly.com/question/16519513
#SPJ1
Mrs. Lowry is ordering car decals for each family to put on their cars for the upcoming baseball season. She ordered 25 decals. She got a deal on them and they will be $2 cheaper for each decal. The total came to $250. Write an equation to find the amount, d, for the normal cost of each car decal without the deal. What is the normal cost of each decal without the deal?
Answers
Answer: Without the deal: $12 10+2=d
Step-by-step explanation:
25=250
1=10
10+2=12
12x25=300
help me with this please
Answers
The formula for the surface area of a cylinder is [tex]2\pi rh+2\pi r^{2}[/tex]. Using this, you can calculate that the cylinder's total surface area is 56[tex]\pi[/tex]. But, since Adrian only needs to find the surface area outside of the tire, I'm going to assume that you only need to apply [tex]2\pi rh[/tex] to your problem. Therefore, the answer is 24[tex]\pi[/tex] or 75.4 (rounded to the nearest tenth). I hope this helps!
What do you need to know about addition to add algebraic expressions
Answers
Answer:
To add two or more monomials that are like terms, add the coefficients; keep the variables and exponents on the variables the same. To subtract two or more monomials that are like terms, subtract the coefficients; keep the variables and exponents on the variables the same.
There are many laws that govern the order in which you perform operations in arithmetic and in algebra. The three most widely discussed are the Commutative, Associative, and Distributive Laws.
Step-by-step explanation:
2/5x−2+3(x−4) simplified
Answers
Answer:
17x-70/5
Step-by-step explanation:
Select all the expressions which are equivalent to –3(0.15 – 0.2 + 0.25p).
A)–0.45 – 0.6 + 0.25p
B)0.15 – 0.75p
C)3(0.15 + 0.2 + 0.25p)
D)–3(–0.05 + 0.25p)
E)–3(0.05 + 0.25p)
Answers
The answers are B and D
helpppppppppppppppppppp
Answers
Answer: 16076.80 cubic yards
Step-by-step explanation: (16)^2 x 3.14 x 20
= 32 x 20 x 3.14
= 16076.80
Basic understanding series
#5-multiplying negative numbers
—————
give 3 examples on multiplying negative numbers and an explanation for other problems similar to those.
-
brainliest/five star question: give a real world example of multiplying negative numbers
Answers
Answer: 3 x (-7) -6 x (-4) -156 x ( 65 )
Step-by-step explanation:
negative times negative= positive
negative times positive= negative
positive times negative= negative
Real world example:
you have -15 dollars in your saving account and want how many times you will still be able to take money out of your account before you owe more than 100 dollars.
Negative times a positive= positive
Negative times a negative= positive
Positive times a negative= negative
The table shows the relationship between the cost of monthly cell phone Plan A and the number of minutes used within a month. The equation c= 35+0.05m describes the relationships for the cost c in dollars for minutes m used for Plan B.
Time (min) Cost ($)
0 30.00
2 30.20
4 30.40
What is the difference, in dollars, of the total costs of the cell phone plans if a customer talks for 20 minutes?
Answers
Answer:
It should be $50.00.
Step-by-step explanation:
It shows that every 2 mins. adds 20 cents to the bill. I wrote out the numbers and did this:
6 30.60
8 30.80
10 40.00
12 40.20
14 40.40
16 40.60
18 40.80
20 50.00
Answer:
152
Step-by-step explanation:
Just multiply; for example, it says for every 4 minutes 40 cents are added to the cost. If you multiply that times 5 you will get your answer.
Hope this helps