Answer:
80
Step-by-step explanation:
let b be the cost of a book, then:
[tex]10b + 40 = 840\\10b = 800\\b = 80[/tex]
b) Write down an expression for the nth term of the following sequence.
9,
14,
19,
24,
Answer:
32,41,51,62,74,87,101
help
Draw the line of reflection that reflects \triangle ABC△ABCtriangle, A, B, C onto \triangle A'B'C'△A
′
B
′
C
′
triangle, A, prime, B, prime, C, prime.
Answer:
x = 1Step-by-step explanation:
As we see this is a horizontal reflection.
The reflection line is equidistant from the corresponding vertexes and is the vertical line.
We can find the line by finding the midpoints of AA', BB' or CC'
0 + 1/2(2 - 0) = 0 + 1 = 1-1 + 1/2(3 - (-1)) = -1 + 2 = 1-4 + 1/2(6 - (-4)) = -4 + 5 = 1The line of reflection is x = 1
Can someone pls help me with this?
Answer:
5 is d
6 is a
Step-by-step explanation:
2. Write two numbers that are opposites and each more than 6 units away from 0.
Answer:
-7, 7
Step-by-step explanation:
Opposites are basically two numbers that are at different sides of the number line. For example, -2 and 2 are opposites because they are the same distance away from 0 on a number line making them opposites. To make an opposite just take a positive number, and then add a negative to it. (8, -8)
What is the advantage of the number zero?
Answer:
Zero can be used as a place holder in many operations such as division and multiplication.
A= x^2 -30x+225 The polynomial represents the area (in square feet) of the square playground. a. Write a polynomial that represents the side length of the playground. b. Write an expression for the perimeter of the playground. (I factored it and got (x-15)^2)
Answer:
a) The polynomial is equivalent to [tex]A = (x-15)^{2}[/tex], and the side length of the playground is [tex]x -15[/tex] feet.
b) The perimeter of the playground, measured in feet, is [tex]p = 4\cdot (x-15)[/tex].
Step-by-step explanation:
a) By Geometry, we know that area of the square is equal to the square of the side length. If [tex]A = x^{2}-30\cdot x +225[/tex] is the area of the square, then must be a perfect square trinomial, that is:
[tex](x-a)^{2} = x^{2}-2\cdot a\cdot x + a^{2}[/tex] (1)
Then, we must observe the following properties:
[tex]-2\cdot a = -30[/tex] (2)
[tex]a = 15[/tex]
[tex]a^{2} = 225[/tex] (3)
[tex]a = 15[/tex]
Therefore, the polynomial is equivalent to [tex]A = (x-15)^{2}[/tex], and the side length of the playground is [tex]x -15[/tex] feet.
b) The perimeter of a square equals four times the side length. That is:
[tex]p = 4\cdot (x-15)[/tex]
The perimeter of the playground, measured in feet, is [tex]p = 4\cdot (x-15)[/tex].
The polynomial that represents the side length is x - 15, and the perimeter of the playground is 4x - 60
The expression of the area is given as:
[tex]A = x^2 - 30x + 225[/tex]
Expand the expression
[tex]A = x^2 - 15x - 15x + 225\\[/tex]
Factorize
[tex]A= (x - 15)^2[/tex]
The area of a square is:
[tex]A = l^2[/tex]
Where l represents the side length.
So, we have:
[tex]l = x - 15[/tex]
The perimeter is then calculated as:
[tex]P = 4l = 4*( x - 15)[/tex]
[tex]P = 4x - 60[/tex]
Hence, the perimeter of the playground is 4x - 60
Read more about polynomials at:
https://brainly.com/question/4142886
Dennis got 85 percent of the questions on the math test correct, which was out of 40. what was his actual mark?
Answer:
34/40
Step-by-step explanation:
85/100 cross multiply x/40
100x/100=3400/100
x=3400/100
3400/100=34
x=34
Picture included
(Sorry about my handwriting)
Hope this helps!! :)
Stay safe and have a wonderful day/night!!!!!
Brainliest?!?!
(Zoom in to see the problem)
I’M MAKING BRAINLIEST!!!!
Answer:
click the points (0,4) and (1,5)
Step-by-step explanation:
y = x+4
if x = 0 then
y = 0+4
so y = 4
0 , 4
then if x = 1
y = 1+ 4
so y = 5
1 , 5
What point(s) are 100units away from point -1? Can you pls respond quickly!
Answer:
Look below.
Step-by-step explanation:
FYI: Im a bit confused on what this question is asking but I am responding based on what I believe the question is asking.
The point 100 spaces to the left of -1 would be (-101,0) and the point 100 spaces to the left of -1 would be (100,0).
The point(s) 100 spaces to the left of -1 would be (- infinity, -1) and the point(s) 100 spaces to the right would be (-1, infinity).
number of solutions to y = 3x - 2 and y = x - 1
Answer:
(z+3)^3=2i
x^3−8=0
(z+6)^2=2i+4
Step-by-step explanation:
hope this is what u are looking for
I don’t how to do these does anybody know how?
Hello what grade is this for?
brainliest for correct answer
The slope is 3/1 because when it rotates the slope will not change
Answer:
-1/3
Step-by-step explanation:
when rotating 90 degrees,
(x,y) -> (y, -x)
-1-0/ 3-0
use the Pythagorean theorem to find L
Answer:
l = Square root of 10
Given that (-1,-1) is on the graph of f(x), find
the corresponding point for the function
f(x - 5).
Answer:
(-1, -6)
Step-by-step explanation:
f(x -5) is another way to say f(x) - 5
And f(x) - 5 is going down the y axis 5 points, so you end at (-1, -6)
HELP!!! WILL MARK AS BRAINLIEST !!!
Answer:
I cant see the photo it won't load
Step-by-step explanation:
Write each number in standard form.
6.1 × 104
634.4 so the standard form is 600 + 30 + 4 + 0.4
Answer:
634.4 or 6.344*10^2
Step-by-step explanation:
When you're being asked to write an expression in standard form, the question probably wants you to simplify the expression or write it in scientific notation
Usually, in lower levels, you would simplify the expression, in which case you would multiply 6.1 by 104 using either a calculator (if you're allowed) or on paper to get 634.4
If you think your teacher wants you to use scientific notation, you would want to write your expression as a number under 10 multiplied by a power of 10. For example, if you were looking to write 6*8 in scientific notation/standard form, you would simplify for a product of 48, and turn that into 4.8*10. In your problem, you can multiply 6.1*104, and write your product of 634.4 as 6.344*10^2
please tell me if there are any mistakes in my answer, if i wrote anything poorly, or if anything is hard to understand, i hope this helps!!
Can anyone help me with this question please.
Answer:
$30 initially
$1.20 per song
Step-by-step explanation:
27.6 - 26.4 = 1.2
Add $2.40 to $27.60 to find balance before purchasing the initial 2 songs: $30
Since the coordinate (-6, 9) is on the graph on the previous page, make sure it
fits into the equation that you wrote. When you plug in -6 for x, your equation
should spit out 9 for y. If not, make sure you keep trying until you have the right
equation! Show your work clearly below
Answer:
Screen shot the question and attach it and i will do it cus you making no sense
Step-by-step explanation:
What is the measure of the missing angel?
Answer:
28
Step-by-step explanation:
90 - 62 = 28
Answer:
28
Step-by-step explanation:
hence it forms 90degree 90-62=28
Not sure how to do this problem.
PLEASE ANSWER
What
is the value of x?
Enter
your answer in the box.
X=
Answer: 20°
Step-by-step explanation:
Set up your work like this and solve.
3x+50=6x-10
60=3x
20°=x
Benjamin spent $31.20 on ten gel pens. How much did each pen cost?
Answer:
$3.12
Step-by-step explanation:
31.20 divided by 10 = 3.12
Select all of the expressions that are less than 10 2/3.
A.10 2/3 ×9/10
B.1 × 10 2/3
C. 10 2/3 × 2 1/3
D. 1/8 × 10 2/3
E.10 2/3 × 3/5
Answer:
A D E
Step-by-step explanation:
i did the test
Solve for d.
d³ = 27
Answer:
The answer is 3
Step-by-step explanation:
3×3×3=27
Answer:
the answer is 100% 3
Step-by-step explanation:
What single percentage change is equivalent to a 12% decrease followed by a 18% increase?
Given:
12% decrease followed by a 18% increase.
To find:
The single percentage change is equivalent to the given set of percentages.
Solution:
Let the initial value be 100.
After 12% decrease, the value is:
[tex]v_1=100-\dfrac{12}{100}\times 100[/tex]
[tex]v_1=100-12[/tex]
[tex]v_1=88[/tex]
After 18% increase, the value is:
[tex]v_2=88+\dfrac{18}{100}\times 88[/tex]
[tex]v_2=88+15.84[/tex]
[tex]v_2=103.84[/tex]
The initial value is 100 and the new value in 103.84. So, it represents increase in the value. So, increase percentage is
[tex]Increase\%=\dfrac{\text{New -Initial}}{\text{Initial}}\times 100[/tex]
[tex]Increase\%=\dfrac{103.84-100}{100}\times 100[/tex]
[tex]Increase\%=3.84[/tex]
Therefore, the value increased by 3.84%.
Eight $300 is marked down by 20% find the sale price rounded to the nearest dollar (show work) 
Answer:
300 - (20/100)=$240 sale price of the suit after 20% discount.
Step-by-step explanation:
300 - (20/100)* 300 =
300 - (1/5) * 300 =
300 - 60 =
$240
which fraction is equivalent to 4/7?
Answer: 8/14
Step-by-step explanation:
number 3 and 4 please
Factor 4x^4+8x^2+1
PLZ try hurry ;-;.....anyone?
please help <3 it would mean the world to me
Answer:
9
Step-by-step explanation:
Answer:
9 Is the answer
Step-by-step explanation:
Can i have brainliest??? thx