Answer:
12 days
Step-by-step explanation:
As, After 4 days, remaining chairs = 480
So, the number of chairs already installed = 720-480 = 240
In 4 days they constructed = 240
In 1 day =240/4 = 60
So in 1 day = 60
So in "x" day = 720
So = 720/60
= 12
= 12 days
Use the quadratic formula to find the solutions to the equation.
3x2 - 10x + 5 = 0
Answer: A
Step-by-step explanation:
3x² - 10x + 5 = 0
a = 3 b = -10 c = 5
Δ = b²- 4ac = 100 - 4.3.5 = 40 > 0 => have 2 solutions
=> x = [tex]\frac{10+\sqrt{40} }{6}[/tex] or x = [tex]\frac{10-\sqrt{40} }{6}[/tex]
[tex]x= \frac{10\pm \sqrt{40} }{6}[/tex] is the solution to the given quadratic equation.
What is quadratic equation?
Quadratic equations are the polynomial equations of degree 2 in one variable of type f(x) = [tex]ax^{2} +bx+c[/tex] = 0 where a, b, c, ∈ R and a ≠ 0. It is the general form of a quadratic equation where 'a' is called the leading coefficient and 'c' is called the absolute term of f (x).
Quadratic formula = [tex]\frac{-b\pm \sqrt{b^{2} -4ac} }{2a}[/tex]
Given quadratic equation
[tex]3x^{2} -10x+5=0[/tex]
a = 3, b = -10, c = 5
Quadratic formula = [tex]\frac{-b\pm \sqrt{b^{2} -4ac} }{2a}[/tex]
[tex]x= \frac{-(-10)\pm \sqrt{(-10)^{2} -4(3)(5)} }{2\times3}[/tex]
⇒ [tex]x= \frac{10\pm \sqrt{100 -60} }{6}[/tex]
⇒ [tex]x= \frac{10\pm \sqrt{40} }{6}[/tex]
Hence, [tex]x= \frac{10\pm \sqrt{40} }{6}[/tex] is the solution to the given quadratic equation.
Find out more information about quadratic equation here
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PLEASE HELP ME SOMEONE
Answer:
Option 2: 27 is the correct answer.
Step-by-step explanation:
Given functions are:
[tex]f(x) = x^2-2\\g(x) = 4f(x) - 1[/tex]
As we can see that the function g(x) in written in terms of f(x), first of all we have to find g(x) by putting the value of f(x) in g(x)
So putting f(x) = x^2-2 in g(x)
[tex]g(x) = 4(x^2-2)-1\\= 4x^2-8-1\\=4x^2-9[/tex]
As g(-3) has to be found, putting x=-3 in g(x)
[tex]g(-3) = 4(-3)^2-9\\= 4(9)-9\\=36-9\\=27[/tex]
Hence
Option 2: 27 is the correct answer.
let the function be f defined by f (x) = 12 - 5x
(a) is it true that f (0) = 0 ? explain why or why not.
(b) evaluate f (-1)
(c) what value of a will make the equation f (a) = 6 true?
The measure of the supplement of ABAC IS (18x + 22) degrees. The measure of the complement of BAC is (9x – 5) degrees. Determine BAC.
Answer:21
Step-by-step explanation:
help................(I'll give brainliest for the answer)
Answer:
sorry buddy ithot i would know this but i dont
Step-by-step explanation:
In a designated VIP seating section there must be an odd number of seats in each row and each row must have two more seats than the one before it. The last requirement is that the front row must have one quarter the total seats in the back 2 rows combined. How many seats will be in each row?
Let n be the total number of rows and there are x seats is the 1st row where x is an odd natural number.
As each row must have 2 more seats than the one before it, so
Number of seats in 2nd row = x+2
Number of seats in 3rd row = x+2+2=x+2x2
Number of seats in 4th row = x+2+2+=x+2x3
Similarly, the number of seats in (n-1)th row =x+2x(n-1)
the number of seats in n^{th} row, i.e last row =x+2x n.
As the front row must have one-quarter of the total seats in the back 2 rows combined, so
[tex]x =\frac 1 4 ( x+2\times(n-1) + x+2\times n) \\\\\Rightarrow 4x=2x+4n-6 \\\\\Rightarrow 4x-2x=4n-6 \\\\\Rightarrow 2x=4n-6 \\\\\Rightarrow x=2n-3\cdots(i)[/tex]
So, the number of seats in the 1st row, x, and the total number of seats, n, must satisfy the equation (i).
For [tex]x>0, n\geq 3.[/tex]
So, for n=3 rows
The number of seats in the 1st row, x= 2x3-3=3.
The number of seats in the 2nd row, = 3+2=5 as in subsequent rows, there will be 2 more seats.
and the number of seats in the 3rd row (last row)=5+2=7.
n can have any integral values satisfying [tex]n\geq 3[/tex].
192 is what percent of 60
Answer:
320%
Step-by-step explanation:
What dose this mean?
$299 bicycle: 10% discount
Answer:
the correct answer is $269
Step-by-step explanation:
Answer:
$269
Step-by-step explanation:
Question 3
3
Oversteer is the termed used to describe front wheel loss of traction.
а)
True
False
b)
Answer:I think it is true
Step-by-step explanation: If you oversteer then it should loose the traction. But I am not sure hope this helps
Do yall know this please help me! It's a test!!!!!!!
Complete the table of values for this equation:
y = 4x +30
Enter your answer by filling in the boxes.
x y
3 ?
4 ?
5 ?
Answer:
42, 46, 50
Step-by-step explanation:
writing random stuff so it'll submit lol
Which statement can be represented by the equation 2/5 x + 9 = 9?
______________________________________________________
A) 2/5 of 9 is a number.
B) 2/5 of x is 9.
C) 9 > 2/5 of x is 9.
D) x + 9 is the same as 2/5 of 9.
______________________________________________________
Find x if x-8=2(x+4)
Answer:
[tex]x=-16[/tex]
Step-by-step explanation:
[tex]x-8=2(x+4)\\x-8=2x+8\\-x=16\\x=-16[/tex]
Answer:
x= -16
Step-by-step explanation:
x-8=2(x+4)
x-8=2x+8
-x=16
x=-16
-16-8= -24 2(-16+4)= -24
ILL MARK U BRAINLIEST!!
Answer:
120 students
Step-by-step explanation:
12 didnt with the 25 students....now they are asking 250...10x25=250 . so 12x10=120 :)
Answer:
120 students
Step-by-step explanation:
12/ 25 students=.48
.48*250=120
even numbers above 20 and below 50
complete the venn diagram
Answer:
where is the venn diagram
Step-by-step explanation:
Answer:
where is the Venn diagram
Step-by-step explanation:
please help ill mark brainliest
Answer:
adding 2 circles on the left and one square on the right
Step-by-step explanation:
Match the vocabulary words to its definition
Shawn took a test in his Psychology class. The test contained 37 multiple-choice questions. Each question was worth 1 point. Shawn answered 31 questions correctly. Express Shawn's test score as a percent. You may round off to the nearest whole number. Show your work.
Answer:
84%
Step-by-step explanation:
divided and move to the nearest 2 numbers
Mr. Espinoza opened a saving account with a deposit of $800. The account earns 3% simple interest. What is the total amount of interest he will have at the end of 5 years?
Answer:
$120
Step-by-step explanation:
Simple interest = principal (P) × rate (R) × time (T) / 100
Principal = $800
Rate = 3%
Time = 5 years
Simple interest = principal (P) × rate (R) × time (T) / 100
= (800 × 3 × 5) / 100
= 12,000 / 100
= 120
Simple interest = $120
The total amount of interest Mr. Espinoza will have at the end of 5 years is $120
1) A game is regularly $59.99, but it’s on sale this week for 15% off. Find the discount and the sale price.
Answer:
$50.99.
Step-by-step explanation:
Answer:$44.99
Step-by-step explanation:
1
Use the slope-intercept form equation for the line of fit, estimate the number of students who will be in the math club during the 15th year.
a.
53
b.
61
c.
65
d.
74
Answer: It's 74
Step-by-step explanation: I just took the test, i hope it helps you guys.
. A plane was flying at an altitude of 30,000 feet when it began the descent
toward the airport. The airplane descends at a rate of 850 feet per minute.
a. What is the function rule that describes this situation?
b. What is the altitude of the plane after it has descended for 8 minutes? Show
your work
c. Use the function in part a to determine how long it takes for the plane to
land if it descends at a continuous rate.
Answer:
a) f(t) = 30000 - 850t
b) 23,200 after 8 minutes
c) Lands in 35.29 minutes
Step-by-step explanation:
f(t) = 30000 - 850t
f(8) = 30000 - 850(8) = 23,200
0 = 30000 - 850t
850t = 30000
t = 35.29 minutes
The answer I need this answer emergency pls help
Answer:
B
Step-by-step explanation:
need a quick answer please
Answer:
157 degrees
Step-by-step explanation:
distance between (-5,-6) and (5,6)
Answer:
2[tex]\sqrt{61}[/tex]
Step-by-step explanation:
Look here!
Which student responds correctly
Answer:
Nina
Step-by-step explanation:
(3+|-2|):2=5/2 i think it's right.
what’s the sum of (8a + 2b - 4)
Answer:
Step-by-step explanation:
8a+2b-4 factors into
2(4a+b-2)
Answer:
8a+5b-9?
Step-by-step explanation:
A swing set was originally priced at $920, but Desmond waited to buy it until the swing set was on sale for 25% off. If he paid 10% sales tax on the sale price, how much did he pay in total?
In a certain chemical, the ratio of zinc to copper is 3 to 17. A jar of the chemical contains 697 grams of copper. How many grams of zinc does it contain?
PLZ PLZ HELP
Answer:
first you have to divide 697 / 17 because 17 is the copper
and you want to know how much pairs it gives you
and the answer is 41 so you're forty-one pairs now u times 41 with 3 to find the grams of zinc in the certain chemical. and 41 * 3 = 123
so you have 123 grams of zinc in the certain chemical
Step-by-step explanation:
Answer:
THE CORRECT ANSWER IS 164
Step-by-step explanation:
Martez, Jadah and Roana are collecting donations for Riley Children's Hospital. Together they collected a total of $73. Martez collected five more dollars than Jadah. Roana collected seven less than three times as much money as Jadah. write a variable to represent the situation
Answer:
The variable expression equation of the situation is;
x + 5 + x + 3·x - 7 = $73
The amount of money Jadah collects = $15
The amount of money Martez collects = $20
The amount of money Roana collects = $38
Step-by-step explanation:
The given parameters are;
The total amount of money they collect together = $73
The amount of money Martez collects = 5 + The amount of money Jadah collects
The amount of money Roana collects = 3 × The amount of money Jadah collects - 7
Let x represent the amount of money Jadah collects
Therefore, we have;
The amount of money Martez collects = 5 + x
The amount of money Roana collects = 3 × x - 7
The variable expression equation of the situation is given as follows;
The total amount of money the three collected = x + 5 + x + 3 × x - 7 = $73
∴ 5 × x - 2 = $73
5 × x - 2 = 73
5 × x = 73 + 2 = 75
x = 75/5 = 15
x = 15
The amount of money Jadah collects = x = $15
The amount of money Martez collects = 5 + x = 5 + 15 = 20
The amount of money Martez collects = $20
The amount of money Roana collects = 3 × x - 7 = 3 × 15 - 7 = 38
The amount of money Roana collects = $38
