can someone help me please
Write a quadratic polynomial, sum and product of whose
zeroes are -4 and -21 respectively.
Answer:
x^2 -4x -21
Step-by-step explanation:
Here, we want to write a quadratic polynomial
We have the sum as -4
Let us have x as the variable
so the sum of the variables is -4x
while the product is -21 x^2
Two factors of 21 that can work here is -7x and 3x
So we have
x^2 - 7x + 3x -21
= x^2 -4x -21
James works at a toy store, and he notices that at the end of his first hour 32% of all the toys have been sold. At the end of his second hour, 32% of the toys that were there at the end of the first hour had been sold, and so on. Write a recursive function for what percent of toys, t, are still in the still after n hours have passed.
Assuming he started with 300 toys, and James can go home when there are less than 5 toys left, how many hours will James be working, assuming they check the toy count every hour? If the function only keeps track of how many toys there are while James is working, what does the domain of the function become?
Answer:
Step-by-step explanation:
Solve for y.
4(y+4)=48
A. 8
B. 11
C. 13
D. 16
Answer:
A
Step-by-step explanation:
4(y+4)=48
4y +16 =48
48-16=4y
32=4y
y=32/4
y=8
Answer:
A. 8
Step-by-step explanation:
4(y+4)=48
(y+4)=48/4
y+4=12
y=12-4
y=8
HOPE THIS HELPS
What’s the value of x
Help ASAP I’ll mark you as brainlister
Answer:
Step-by-step explanation:
1. I can't see the first one very well.
2. Find the area of each triangle by doing 1/2 * base * height. This should give you [tex]40m^{2}[/tex]
3. The area of a trapezium is [tex]\frac{1}{2} (a+b)h[/tex] where a is the top edge, b is the bottom edge and h is the height.
We can work out the bottom edge using pythagoras - split the trapezium into 2 triangles on each side and a rectangle in the middle. This gives you the length of the bottom edge which is 2 + 2 + 2 = 6'
Work out the area by doing 1/2(2+6)4 = 16' squared.
4.Split this shape into a triangle and rectangle. We know the right hand edge of the triangle= 9-4 = 5'.
To find the bottom edge of the triangle, use tanθ=opposite/adjacent line. Therefore tan45=bottom edge of triangle/5'. tan 45=1 therefore bottom edge = 5'.
The bottom edge of triangle gives us the height; use 1/2(a+b)h to work out the area of the trapezium. 1/2(4+9)5 = 32.5' squared
The area if a rectangular frame is 32 square inches. The perimeter of the frame is 24 inches. Which shows the correct dimensions of the frame?
Answer:
8 x 4
Step-by-step explanation:
Lets say the length is x and the width is y.
xy = 32
2x + 2y = 24
Rearranging the second equation, we get:
2x = 24 - 2y
/2 /2
x = 12 - y
substitute into the first equation
y(12 - y) = 32
12y - y^2 = 32
-32 -32
-y^2 +12y - 32 = 0
x -1 x -1
y^2 - 12y + 32 = 0
(y - 8)(y - 4) = 0
y = 8 or 4
substitute into x = 12 - y.
x = 12 - 8 = 4
x = 12 -4 = 8
so the correct dimensions are 4 x 8, as either x = 4 and y =8, or x = 8 and y = 4.
Hope I helped!
Find what x is giving brainly.
Does anyone know this answer??
Answer:
153.50
Step-by-step explanation:
The summation of the angles of the triangles is 180 and m(<q) =m(<p) =13.25
So you will subtract the the two equal angles from the 180
The Music Express is going to buy music bundles from a company that is going out of business. The company charges different amounts for bundles of pop and rock music:
Cost for each pop music bundle is $1200
Cost for each rock music bundle is $950
One - time fee for rights to the pop music is $300
One - time fee for rights to the rock music is $250.
Write an equation that represents the total cost for pop music bundles. Write another equations to represent the total cost for rock music bundles. Identify the variables in the equations.
Answer:
Rock bundles:
950R+250
pop bundles:
1200P+300
Step-by-step explanation:
R=amount of rock bundles
P=amount of pop bundles
Rock bundles:
950R+250
pop bundles:
1200P+300
Answer:
Pop equation:1200C + 300 = D
Rock equation:950A + 250 = B
Step-by-step explanation:
Given a line with slope of 5 and y-intercept of -1, which of the ordered pairs given below would NOT be on the line?
(4, 18)
(0, -1)
(2, 9)
(3, 14)
Answer:
(4,18)
Step-by-step explanation:
help me please!!!!!!!!!!!!!!!
Answer:
12 20 15
Step-by-step explanation:
Step-by-step explanation:
The answer of this question is 12, 15, 20 .
Let f(x) = 8x3 + 16x2 − 15 and g(x) = 2x + 1. Find f of x over g of x.
A) 4 times x squared plus 6 times x minus 3 plus 12 over the quantity 2 times x plus 1
B) 4 times x squared plus 6 times x plus 3 plus 12 over the quantity 2 times x plus 1
C) 4 times x squared plus 6 times x minus 3 minus 12 over the quantity 2 times x plus 1
D) 4 times x squared plus 6 times x plus 3 minus 12 over the quantity 2 times x plus 1
Thanks :')
Answer:
I think the answer is C. Its not B or D though
Step-by-step explanation:
3 of 3
+ Automatic Zoom +
membership fee and then a per song download rate.
iTones charges $10 per month, and $1 per song
Music Mine charges $7 per month and $1.50 per song.
a) Write an equation for each music provider.
Answer:
Results are below.
Step-by-step explanation:
Giving the following information:
iTones charges $10 per month, and $1 per song.
Music Mine charges $7 per month and $1.50 per song.
To calculate the total cost for each option, we need to use the following formulas:
iTones:
Total cost= 10 + 1x
x= number of songs
Music Mine:
Total cost= 7 + 1.5x
x= number of songs
Helpppppppppppppppp plzzzz
Answer:
1. a) x b)1
2. a)x^3 b) 3
3. a) 3x^7 b) 7
Step-by-step explanation:
The area of a rectangular window is 4620 cm?.
If the width of the window is 55 cm, what is its length?
Answer:
84
Step-by-step e
length = area/ widthlength = 4620 / 55=84If a figure is similar by a scale factor
of 1/2, what does that mean?
solve the following y=x-5 and y=5x-13
a) (-4,5)
b) (-3,2)
c) (2,-3)
d) (2,3)
anyone get this ? will mark brainlest!
solve: x=
Answer:
3
Step-by-step explanation:
360 can be written as 2^x * 3^y * 5, where x and y are positive integers.
Work out the value of x and the value of y.
Answer:
x = 3, y = 2
Step-by-step explanation:
[tex]360 = {2}^{x} \times {3}^{y} \times 5 \\ \\ \frac{360}{5} ={2}^{x} \times {3}^{y} \\ \\ 72 = {2}^{x} \times {3}^{y} \\ \\ 8\times 9 = {2}^{x} \times {3}^{y} \\ \\ {2}^{3} \times {3}^{2} = {2}^{x} \times {3}^{y} \\ \\ equating \: like \: terms \: on \: both \: sides \\ {2}^{3} = {2}^{x} \\ \\ \implies \: x = 3 \\ \\ {3}^{2} = {3}^{y} \\ \\ \implies \: y= 2 \\ \\[/tex]
9(x+4) Please find the equivalent expression.*
Answer:
9(4)+4
Step-by-step explanation:
Answer: 9x+36
Step-by-step explanation:
9(x+4)
9x+(9x4)
9x+36
Help with this question please.
Given a roll of nickels. The diameter of one nickel is 0.835 inches, and the thickness is 0.077 inches. Find the surface area of a roll of $2 in nickels. Round to the nearest tenth.
PLS RESPOND ASAP I NEED THE ANSWER PLSSSS
Answer:
124.8 Inches
Step-By-Step
1/2 0.835 Inches = 0.4175
r = 0.4175
h = 0.077
A=2πrh+2πr^2
A=2π(0.4175)(0.077)+2π(0.4175^2)
A = 3.12
Nickel = 5 Cents
$2 = 200 Cents
200 / 5 = 40
(3.12)(40) = 124.8 In
Answer:
The answer is 0.8 in^2
Step-by-step explanation:
Data
diameter = 0.835 in
thickness = 0.077in
Roll of $ 2.00
Procedure
1.- Find the total number of nickels
# of nickels = 2/ 0.05
# of nickels = 40
2.- Calculate the Circumference
C = 2*pi*r
r = 0.077/2
r = 0.0385
C = 2*3.14*0.0385
C = 0.242 in
3.- Calculate the area of the thickness
Area = 0.242* 0.077*40
Area = 0.745 in^2
4.- Calculate the area of the base and the top
Area = 2*pi*r^2
Area = 2*3.14*(0.0382)^2
Area = 0.0093 in^2
5.- Calculate the total area of the roll
Total area = Area of the thickness + Area of the base and top
Total area = 0.745 + 0.0093
Total area = 0.7543 in^2 This is the result
Rounding to the nearest tenth = 0.8 in^2
Write the number as hundredths in fraction form and decimal form.
2/10
please help me and show your work ill mark you brainliest
Answer: there is no solution
Step-by-step explanation: 1/4z — 13 is not the same as 1/4 + 13
Say z = 1 that would simplify as -12 3/4 = 13 1/4 they are not the same so there is no solution
(-1)^2 × (-1)^3 × (-1)^5
Answer:
1
Step-by-step explanation:
(-1)^2 = 1
(-1)^3 = -1
(-1)^5 = -1
(1) (-1) (-1) = 1
11. One-third of the result of three times a number that is increased by 12
Answer:
n * 3 +12 / 3
Step-by-step explanation:
One third of the result of a number * 3 is once the number is multiplied by 3, the number is then added to 12, because the result is divided by 3, meaning you must multiply by 3 first, then add 12, and then divide by 3.
Equation formed will be:
1/3 (3x + 12)
THANK YOU!!
∝ Sidhdi
A runner is training for a marathon by adding on 4 minutes to the total training time each day. If the runner trains for 24 minutes the first day, which formula represents the total number of minutes the runner will train after n days?
Answer:
a
Step-by-step explanation:
Add 4 minutes to the 24 minutes each day. Multiply the number of minutes by the time.
calculate the size of angle AEF
Answer:
Accuate Angel 230 digre
Answer:
90 degrees
Step-by-step explanation:
The sum of the measures of interior angles in a quadrilateral is 360 degrees. A quadrilateral is any shape that has 4 sides. ABCD is a square, and squares have 4 sides, so the sum of the angles inside of the square will be equal to 360. A square has 4 angles, each with equal measure, so to find the measure of one angle, divide 360 by 4: 360/4=90. Each angle in a square measures 90 degrees.Triangle DEF is an equilateral. This means that each side is equal, but it also means that each angle will be equal too. The sum of the measure of interior angles in a triangle is 180 degrees, and a triangle has 3 angles, therefore you can find the measure of each angle in an equilateral by dividing 180 by 3: 180/3=60. Each angle in an equilateral triangle measures 60 degrees.The measure of a straight line is always 180 degrees. CDF is a straight line, and it is made up of 3 angles:-Angle CDA
-Angle ADE
-Angle EDF
Since the measure of CDF has to be 180 degrees, the measures of angles CDA, ADE, and EDF must add up to 180.Angle CDA is an angle of a square, so it is equal to 90 degreesAngle EDF is an angle of an equilateral triangle, so it is equal to 60 degrees.The angles must add up to 180, so 90+60+ADE=180You can subtract 90 and 60 from 180 to find the measure of ADE: 180-90-60=30The question tells us that triangle ADE is isosceles. There is a theorem called base angles theorem, and it states that if two sides of a triangle are equal in length, then the two angles opposite from them will be equal in measure. Using this theorem, we can find that the measure of angle ADE is equal to the measure of AED. We already found out that ADE is 30 degrees, so AED is also 30 degrees. But the angle we are looking for is AEF:AEF is made up of angles AED and DEF, so the measures of angles AED+DEF=AEF. DEF is part of the equilateral triangle, so we know it is 60 degrees. We already found that AED is 30 degrees, so add 30 and 60 degrees: 30+60=90. AEF is 90 degrees.Which expression represents the series 1+5+25+125+625
Answer:
Step-by-step explanation:
