Marta’s math textbook weighs Four-fifths of a pound less than 4 times the weight of the book she is reading for her language arts class. If the weight of the math textbook is 2 and one-fifth pounds, which shows the correct equation and value of x, the weight of Marta’s book for language arts?
4 x + four-fifths = 2 and one-fifth; x = StartFraction 7 over 20 EndFraction of a pound
4 x minus four-fifths = 2 and one-fifth; x = three-fourths of a pound
4 x + four-fifths = 2 and one-fifth; x = three-fourths of a pound
4 x minus four-fifths = 2 and one-fifth; x = StartFraction 7 over 20 EndFraction of a pound
Answer:
C
Step-by-step explanation:
If f(x) =- 2x + 5, find f(4x)
Answer:
[tex]f(4x)=-8x+5[/tex]
Step-by-step explanation:
We are given the function:
[tex]f(x)=-2x+5[/tex]
And we want to find:
[tex]f(4x)[/tex]
So, by substitution, we acquire:
[tex]f(4x)=-2(4x)+5[/tex]
Multiply. So, our answer is:
[tex]f(4x)=-8x+5[/tex]
7x+3y=11
3x-y=23
Solve by substitution
Mhanifa can you please help? I will mark brainliest!
Answer:
Given function
h(x) = 2x - 1#15 Find the inverse of h(x)
Substitute x with y and h(x) with x and solve for y:
x = 2y - 12y = x + 1y = 1/2x + 1/2The inverse is:
h⁻¹(x) = 1/2x + 1/2#16 The graph with both lines is attached.
The x- and y-intercepts of both functions have reversed values.
#17 Table of the inverse function will contain same numbers with swapped domain and range.
Initial look is like this:
x | -3 | -2 | -1 | 0 | 1 | 2 | 3h⁻¹(x) | -1 | | 0 | | 1 | | 2The rest of the table is filled in by finding the values:
x | -3 | -2 | -1 | 0 | 1 | 2 | 3h⁻¹(x) | -1 | -0.5 | 0 | 0.5 | 1 | 1.5 | 2Each figure below is a regular polygon and has radii and apothem shown. The find measure of each numbered angle.
161
Column A
Column B
1.
m24
a. 67.5°
2.
m25
b. 22.5°
3.
m26
C. 45°
Place the quadratic y=2x^2+24x+79 into vertex form by using the method of completing the square and then state the coordinates of its vertex.
Answer:
[tex]y=2(x+6)^2+7[/tex]
[tex](-6,7)[/tex]
Step-by-step explanation:
[tex]y=2x^2+24x+79[/tex]
Completing the square is a process of converting a quadratic equation in standard form into vertex form.
The first step in completing the square is grouping the quadratic and linear terms of the quadratic equation.
[tex]y=(2x^2+24x)+79[/tex]
Factor out the coefficient of the quadratic term,
[tex]y=2(x^2+12x)+79[/tex]
Now complete the square, add a term to make the grouped part of the equation a complete square, then balance the equation.
[tex]y=2(x^2+12x+36-36)+79[/tex]
Simplify,
[tex]y=2(x^2+12x+36)+79+(2)(-36)[/tex]
[tex]y=2(x+6)^2+79-72[/tex]
[tex]y=2(x+6)^2+7[/tex]
The x-coordinate of the vertex of the equation is equal to (-1) times the numerical part of the quadratic term, and the y-coordinate is equal to the constant.
[tex](-6,7)[/tex]
The lenght of a turtles shell z, in millimeters, is related to the turtles age in years a , as described by the equation below.
s=55a+37
Which statements about the turtle are true?
Select 3
Answer:
B, C , F
Step-by-step explanation:
The age multiplied 55, so the shell grows at rate of 55mm per year
in fact if the age is 2 we have (55 x 2) = 55 + 55
if 3 = (55 x 3) = 55 + 55 + 55
and so on
When the turtle is hatched the shell is 37 mm in lenght.
In fact, if we substitute 0 to a, we have
s = (55 x 0) + 37
s = 37
when the turtle is 1 year old, the shell is 92 mm in length.
in fact if we substitu a with 1, we have
s = (55 x 1) + 37
s = 55 + 37
s = 92
Bank account C starts with $10 and doubles each week. Bank account D starts with $1,000 and grows by $500 each week.
When will account C contain more money than account D? Write an equation to represent the situation and solve.
Your help is much appreciated.
Answer:it will take bank d 8 weeks to get more than bank c
Step-by-step explanation: 10 20 40 80 160 320 640 1280 2560 5120 10240
can any one help me i really need it
Answer:
i got 722.5, Not sure if this is right but it's what I got
i need help with this
Answer:
A) 9 inches per minute
Step-by-step explanation:
36 inches in 4 minutes
36/4 = 9 inches per minute
Helpp
A group of 8 students was asked, "How many hours did you watch television last week?" Here are their responses:
15, 14, 6, 13, 20, 13, 9, 17
Use the recursive relationship to complete the next two rows of Pascal's triangle. Row 5: 1 _ _ _ _ 1 Row 6: 1 _ _ _ _ _ 1
Answer:
1 5 10 10 5 1 Row 5
1 6 15 20 15 6 1 Row 6
Recursive relationship:
Each row has number of positions = row number + 1. The Row 0 is always 1.
The first and last number in each row is 1, the number in the second position and the penultimate corresponds to the number of the row. The middle numbers correspond to the sum of the two numbers in the top row. The resulting number from the addition is located in the middle of the numbers added in the next row.
Step-by-step explanation:
The pascal's triangle
* Row 0 = 1
* Row 1 = 1 1
1 Row 0
1 1 Row 1
Since there are only two positions, the first and last are 1.
*Row 2 = 1 _ 1
1 Row 0
1 1 Row 1
1 2 1 Row 2
2 is the sum of 1 + 1 and we place it in the next row between the added numbers 1 and 1.
* Row 3 = 1 _ _ 1
1 Row 0
1 1 Row 1
1 2 1 Row 2
1 3 3 1 Row 3
1 + 2 = 3 (the row number and the and adding the numbers from the previous row)
* Row 4 = 1 _ _ _ 1
1 Row 0
1 1 Row 1
1 2 1 Row 2
1 3 3 1 Row 3
1 4 6 4 1 Row 4
1 + 3 = 4 (the row number)
3 +3 = 6
* Row 5 = 1 _ _ _ _ 1
1 Row 0
1 1 Row 1
1 2 1 Row 2
1 3 3 1 Row 3
1 4 6 4 1 Row 4
1 5 10 10 5 1 Row 5
1 + 4 = 5
4 + 6 = 10
* Row 6 = 1 _ _ _ _ _ 1
1 Row 0
1 1 Row 1
1 2 1 Row 2
1 3 3 1 Row 3
1 4 6 4 1 Row 4
1 5 10 10 5 1 Row 5
1 6 15 20 15 6 1 Row 6
1 + 5 = 6
5 + 10 = 15
10 + 10 = 20
Which is an equation of the line through the origin and (-8, -5)?
O A. y = 8/5 x
O B. y= -5x
O C. y = 5/8x
D. y = -8x
Help
Plz due now
What percent of 12 is 9?
A. 25%
B. 67%
C. 75%
D. 108%
E. 133%
Answer:
75%
Step-by-step explanation:
75% = 3/4
3/4 * 12 = 9
WORTH 25. Help me please. I don't ask that much I'm not begging you either. Thanks.
Answer:
9.
Step-by-step explanation:
It's further away from the other numbers by a significant amount.
find the two consecutive whole numbers of 97
Answer:
48 and 49
Step-by-step explanation:
48 + 49 = 97. Therefore the 2 numbers are 48 and 49
the circumference is about ___ mm.
use 3.14 fir pi
Answer:
C =62.8 mm
Step-by-step explanation:
The circumference of a circle is given by
C = 2 * pi *r
C = 2 * 3.14* 10
C =62.8 mm
The ratio of melanie's allowance to jacob's allowance is 4.1 to 20.5. If Jacob gets $5.00,how much allowance does melanie get?
Answer:
1.00
Step-by-step explanation:
x=(5*4.1)20.5
x=1
Between which 2 consecutive integers is each number located on a number line?
__ < .99 < __
Answer:
x lies between 0 and 1 on the number line
Step-by-step explanation:
As we move to the left from 0.99, the first integer we reach is 0; as we move to the right from 0.99, the first integer we reach is 1.
Thus, 0 < x > 1: x lies between 0 and 1 on the number line.
In California, the sales tax is 9.25%. In Oregon, there is no sales tax. How much does an Oregon resident save versus a California resident when buying a $20,000 new car? (Section 13.2) (2 points)
Answer:
use this https://www.calculator.net/sales-tax-calculator.html
Step-by-step explanation:
HELP I MARK BRAIN thing
Answer:
It would be A. x < 6
Step-by-step explanation:
The number line shows it is less than six with a closed circle and the arrow pointing towards the left of it
Which one because it hard am going to keep telling questions
Answer:
56
Step-by-step explanation:
Plzzzzzzzzzzzzz help ;-;
Answer:
option A
associative property of addition
Answer:
Associative property
Step-by-step explanation: when they are added or multiplied does not change the sum or product
Please I need help ASAP 40. Points
Total owed = starting amount x( 1 + interest rate) ^ time
The equation would be total = 550(1.12)^x where x is the number of months.
Replace total with 550x2 = 1100 and solve for x
It will double in 6.11 months. Round to 6 months
HI! please help out ASAP this is due today! Explain it the best you can and send a picture explaining it so I won’t get confused. Thank u!
Use the ALEKS calculator to write as a percentage.
5/17
Round your answer to the nearest tenth of a percent.
Answer:
The answer is 29.4%
Step-by-step explanation:
The given is to be rounded to the nearest tenth percent so
5/17 = 0.294
0.294 * 100 = 29.4% since nearest tenth percent
The required answer is 29.4%
Given fraction is 5/17.
Percentage is a way of expressing a fraction or proportion as a portion of 100. It is a mathematical concept used to represent relative quantities or values in terms of hundredths. The word "percent" is derived from the Latin words "per centum," which mean "per hundred." It is denoted by the symbol "%".
To convert a fraction to a percentage, and multiply the fraction by 100.
Let a and b be the rel numbers. To convert the fraction a/b into percentage by multiply the fraction by 100.
That is , a/b x 100.
And on simplification gives the fractions.
To convert 5/17 to a percentage, we have:
(5/17) x 100 = 29.4117647...
Rounding this to the nearest tenth of a percent, we get:
29.4%
Therefore, when rounded to the nearest tenth of a percent, 5/17 is approximately 29.4%.
Learn more about converting fractions to percentages, click here:
https://brainly.com/question/25395
#SPJ6
Write 142 as a fraction or mixed number
Answer: 142/1
Step-by-step explanation:
Answer:
1.42 or 71/50
Step-by-step explanation:
In order to get the answer just divide.
71÷60=1.42
Answered by the ONE & ONLY #QUEEN herself aka #$$$DRIPPQUEENMO!!
I HOPE THIS HELPED!!!
Could someone please me find this answer
Answer:
9/100
Step-by-step explanation:
a percent is 9 out of 100 so it is 9/100
PLEASE HELP !
Determine whether each equation represents a linear or a nonlinear function
Select Linear or Nonlinear for each equation
Step-by-step explanation:
Note:
Linear equations will never exponents in its equation such as
[tex] {x}^{2} \\ y = {x}^{3} [/tex]
as those equations will produce curly graphs.
Nonlinear equations will either contain exponents or logarithms (eg. ln2)
Solve the following system of equations show all your work. Write the solution as a point (x,y) (4 points).
3x + 5y = -40
–x + 4y = -15?
Answer:
-5,-5
Step-by-step explanation:
m a t h w a y . c o m