Answer:
70 pages
Step-by-step explanation:
100%-30%=70%
70% of the book is 49 pages.
x is the total number of pages.
0.7x=49
7x=490
x=70
The total number of pages in the book is 70 if Joe has read 30% of the book and he has 49 more pages to finish.
What is the percentage?It is defined as the ratio of two numbers expressed in the fraction of 100 parts. It is the measure to compare two data, the % sign is used to express the percentage.
We have:
Joe has read 30% of a book.
Remaining number of pages = 49
Let's suppose the total pages are x
The remaining % = 100% - 30% = 70%
[tex]\rm 70\% \ of \ x =40[/tex]
[tex]\rm \frac{70x}{100} =49[/tex]
x = 70 pages
Thus, the total number of pages in the book is 70 if Joe has read 30% of the book and he has 49 more pages to finish.
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What is the solution to the system of equations?
6x−4y=152
y=3x−762
Answer:
Hi! The correct answer is (1448/3, 686)
Step-by-step explanation:
~Solve for the first variable in one of the equations, then substitute the result into the other equation~
The graph of a quadratic function in shown below.
Which statements about this graph are not true? Select all that apply.
A.
The graph has a y-intercept at (0,5).
B.
The graph has a relative maximum point (-3,4).
C.
The graph has an x-interceptat (1,0).
D.
The graph has the y-axis as a line of symmetry.
E.
The graph has zeros at x = -5 and x = -1.
F.
The graph represents the function f(x) = -x2 - 6x - 5.
Answer:
E
Step-by-step explanation:
The statements that are not true are:
The graph has a y-intercept at (0,5) is not true.
The graph has a relative maximum point (-3,4) is not true,
The graph has zeros at x = -5 and x = -1 is not true.
Options, A, B, and E are the correct answer.
What is a function?A function has an input and an output.
A function can be one-to-one or onto one.
It simply indicated the relationships between the input and the output.
Example:
f(x) = 2x + 1
f(1) = 2 + 1 = 3
f(2) = 2 x 2 + 1 = 4 + 1 = 5
The outputs of the functions are 3 and 5
The inputs of the function are 1 and 2.
We have,
- The y-intercept can be found by setting x=0, which gives f(0)=-5.
So the y-intercept is (0,-5).
- To find the relative maximum,
We need to find the vertex of the parabola.
The x-coordinate of the vertex is given by -b/2a, where a=-1 and b=-6.
So, x=3 is the x-coordinate of the vertex.
To find the y-coordinate, we plug in x=3 into the function:
f(3) = -(3²) - 6 (3) - 5 = -32.
So the vertex is (3,-32), which is a relative minimum, not a maximum.
- To find the x-intercepts,
We set y =0 and solve for x.
-x² - 6x - 5 = 0.
Factoring or using the quadratic formula,
We get x = -5 and x = -1.
- The y-axis is a line of symmetry for any parabola of form f(x)=ax²,
f(-x) = a (-x)² = ax² = f(x).
- To find the zeros,
We set f(x) = 0 and solve for x.
-x² - 6x - 5 = 0.
Factoring or using the quadratic formula,
We get x = -5 and x = -1.
So the graph has zeros at x = -5 and x = -1, not x = -2 and x = 3.
- The graph represents the function f(x) = -x2 - 6x - 5.
The graph is true.
Thus,
The graph has a y-intercept at (0,5) is not true.
The graph has a relative maximum point (-3,4) is not true,
The graph has zeros at x = -5 and x = -1 is not true.
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Determine whether a triangle can be formed with the given side lengths.
10 ft, 3 ft, 19 ft
A triangle________ have these three side lengths.
(can or cannot)
Answer:
A triangle can have these three side lengths.
yo somebody help me on this i will mark you has brainlist c: plz
Teddy has two number cards.
18
The LCM of the two numbers is 126
Work out two possible values for the blank card.
I have 7 but I don’t k so the other number
Answer:
7 and 14
Step-by-step explanation:
Given the LCM of two numbers to be 126
If one of the numbers is 18
The other number will be 126/18 = 7
The other possible value can be gotten by multiplying the lowest prime number by 7 i.e 2×7= 14
The two possible numbers are 7 and 14
A salesperson's commission rate is 4%. What is the commission from the sale of 32,000 worth of furnaces?
Answer:
$1280
Step-by-step explanation:
15) Jeff left a tip of $5.25 for a $30.00 meal. What percent tip did he leave?
Which ratio is equivalent to the given ratio?
45:63
Select each correct answer.
o 5/7
o 15/21
o 25/31
o 15/23
Answer:
5/7 is the only one
Step-by-step explanation:
John’s square garden has a perimeter of 26 ft. If John walks through the garden on the diagonal, how far did John walk? Round answer to the nearest tenth.
Answer:
9.19 ft
Step-by-step explanation:
Since it's a square, we know that all the sides are equal to 26/4 which equals 6.5. Then, we use the Pythagorean theorem to calculate the diagonal (since the diagonal is splitting the square into two right triangles). So we to a^2+b^2=c^2. So 42.25+42.25=84.5. The square root of 84.5 rounded to the nearest tenth is 9.19
Which is the correct answer?, need help
Answer:
A
Step-by-step explanation:
What is 16/24 in its simplest form?
Answer:
2/3
Step-by-step explanation:
16/24
4/6
2/3
Answer:
2/3
Step-by-step explanation:
16 ÷ 8 = 2
24 ÷ 8 =3
so the simplest form is 2/3
0.4x-0.25=1.75
A. x=2
B. x=5
C. x=1.5
D.x=5.2
what is the missing angle
Answer:
89 degrees.
Step-by-step explanation:
The angles on a triangle always add up to 180. Therefore we have to subtract what angles we already have from 180 to get the missing angle
180-(49+42)
180-91= 89
The missing angle is 89 degrees.
I hope this helped!
What type of association would you expect between a persons age and hair length (positive/negative etc)
Answer:
:0 according to my calculations
Step-by-step explanation:
cheese
need some help here please
Answer:
Elimination
Step-by-step explanation:
The following system of equations can be easily solved by elimination as we can simply eliminate x-term.
Substitution will take a lot of time because you need to move to make either x-term or y-term as the subject then substitute in.
Graphing Method — You need to find the intercepts of both equations. You also have to convert into slope-intercept form which takes a lot of time.
please help me! its about solving system by substitution
Answer:
Step: Solvex=4for x:
x=4
Step: Substitute4forxin2x+3y=14:
2x+3y=14
(2)(4)+3y=14
3y+8=14(Simplify both sides of the equation)
3y+8+−8=14+−8(Add -8 to both sides)
3y=6
3y
3
=
6
3
(Divide both sides by 3)
y=2
Answer:
x=4 and y=2
Step-by-step explanation:
You roll a 6-sided die. Find the P(4).
Triangle ABC is reflected over the line y = 1. What
are the coordinates of B'?
O (-2,3)
O (-2,5)
(2, -3)
O (4, -3)
Answer:
-2,5
Step-by-step explanation:
Answer:B
Step-by-step explanation:Got it right on edge 2020
Simplify.
- 6x + 8/6 - 3/2x - 1/2 + 5/2x
Answer:
i got 5(6x-1)/6
Step-by-step explanation:
9(k - 2) = -6 what is k
Answer:
K = 4/3 or 1 1/3
Step-by-step explanation:
4/3 or 1 1/3 - 2 is 2/3
2/3 times 9 is 6
Hope this helps ;)
URGENT DUE IN 10 MINUTES!
You have 8 cups of flour. It takes 1 cup of flour to make 24 cookies. The function C(f) = 24f represents the number of cookies, C, that can be made with f cups of flour. Which set of ordered pairs represent points on the graph of C(f) = 24f?
Answer:
c(0) = 24*0 = 0
c(8) = 24*8 = 192
Your range is [0,192]
Step-by-step explanation:
Answer:
You have 8 cups of flour it takes 1 cup of flour to make 24 cookies the function c(f)=24f
c represents the number of cookies
f represents the cups of flour
You have 8 cups of flour, we can use only 0 to 8 cups of flour.
so domain f is 0 to 8 cups [0,8]
Now we find the range
1 cup of flour to make 24 cookies
So 8 cups of flour = 24* 8 = 192 cookies
using 8 cups you can make 192 cookies
So number of cookies is from 0 to 192
Range is [0,192
Step-by-step explanation:
what is the slope for (-12,-5),(0,-8)
Answer:
m= - 1/4
Step-by-step explanation:
Which expression is equivalent to ?
Answer:
Step-by-step explanation:
r^9/r^3
this is equivalent to r^(9-3)=r^6
Peter earns $ 12.40 each week for completing his chores. Ria earns 1.2 times as money per week as Peter. How much does peter earn each week.? Show your work.
Answer:
Ria earns 14.88 dollars each week
Step-by-step explanation:
Amount earned by peter every week = $12.40
If Ria earns 1.2 times as money per week as Peter, then;
Amount Ria earns = 1.2 * 12.40
Amount Ria earns = 14.88
Hence Ria earns 14.88 dollars each week
Find the missing side length. Round to the nearest tenth.
11
8
PLEASE ANSWER! WILL GIVE BRAINLIEST.
The ratios 9:18, 12:24, 15:30, 18:36, and 21:42 form a pattern of
equivalent ratios in the table below.
Which is another ratio in this pattern?
A. 1:3
B. 6:12
C. 24:27
D. 28:49
Marco. Need to buy some cat food at the nearest store three bags of cat food cost $15.75 how much with Marcos me on five bags of cat
Answer:
$26.25
Step-by-step explanation:
We are told that Marco needs to buy some cat food. At the nearest store, 3 bags of cat food cost $15.75.
First of all we will find cost of 1 bag of cat food by dividing 15.75 by 3.
Now we will find the amount that Marco has spend for 5 bags of cat food by multiplying 5.25 by 5.
Therefore, Marco has spend $26.25 for purchasing 5 bags of cat food.
Answer:
5.25 per bag
Step-by-step explanation:
Just divide the amount of money by the number of bags needed.
15.75 divided by 3 = 5.25
✨PLEASE HELP✨ DUE SOON
Answer:
The answer is C!!
Step-by-step explanation:
4(2y-8)+y=13
8y-32+y=13
9y-32=13
9y=45
y=5
4x+y=13
4x+(5)=13
4x=8
x=2
Find the unit rate.
84 miles in 12 days
Unit rate:
mi :
day
Answer:
7/12 7 miles a day
Step-by-step explanation:
!!HELP ASAP PLEASE CORRECT ANSWER GETS BRAINLY!!