Answer:
D.
Step-by-step explanation:
Find the zeros of the function algebraically.
f(x) = 16x4 − 49x2
Answer: Plz mark me brainlest
Step-by-step explanation:
Just Simply Use Identity:
a^2 - b^2 = ( a+b) ( a-b)
Then:
( 49X^4 - 36 X^2) = 0
(7 X^2 + 6 X) ( 7X^2 - 6X) =0
7X^2 + 6X = 0, then X( 7X +6) =0 X=0, 7x +6 =0 X = -6/7
7X^2 -6x =0 X( 7x - 6) =0 X =0 7x -6 =0 X =6/7
Pull out a factor of x² from f(x) :
16x⁴ - 49x² = x² (16x² - 49)
Now write it as a difference of squares, then factorize:
16x⁴ - 49x² = x² ((4x)² - 7²)
16x⁴ - 49x² = x² (4x - 7) (4x + 7)
Set this equal to 0 and solve for x :
x² (4x - 7) (4x + 7) = 0
x² = 0 or 4x - 7 = 0 or 4x + 7 = 0
x = 0 or x = 7/4 or x = -7/4
60% of the students in Mr. Vick's class have computers at home. If 21 students in his class have computers at home, how many students are there in his class?
Answer:
There are 35 students in his class.
Step-by-step explanation:
1. Create a proportion: 60/100=21/x
2. Cross multiply, or not (I prefer to cross multiply). 60x=2100
3. Solve the equation: x=35.
Answer: There are 35 students in his class, 14 people going in school, 21 student online.
3. I opened a compound interest account with $300 at 2%. How much money will be in the
account at the end of 18 months?
Answer:
there will be 408$ at the end of 18 months
Step-by-step explanation:
2% of 300 is 6 and 6 x 18 = 108. 108 + 300 = 408
I will mark brainliest if you can help with these and show work plus 40 points
Answer:
Step-by-step explanation:
PLEASEEEEEEEEEEEEEEEEEEEE HURRYYYYYYYYYYYYYYYYYYYYYYYYYYYY SOMEONEEEE
Answer: C = 30 - 3t
Step-by-step explanation: he starts with 30 therefore having 30 on day 0 and he eats 3 daily so day 1 would be 27 day 2 24 and so on
7. Carlos is renovating a house and hires a plumber to install the piping for 4 points
the new bathroom. The plumber charges an initial fee plus an hourly rate
for the number of hours it will take to complete the installation. The
function y = 100 + 35x can be used to model the total cost of the job, in
dollars. What does the slope in the expression of this function represent? *
the initial fee for the installation, $35
the initial fee for the installation, $100
the cost per hour of installation work, $35
the number of hours to complete the installation, x
Answer:
the cost per hour of installation work, $35
Step-by-step explanation:
y = 35x + 100
the slope of a function is the coefficient of x, therefore, it is 35. $100 is the initial fee, since it ia the y intercept, and $35 is the cost per hour. y is the total amount, and x is the number of hours. Therefore, the only possible answer is the third choice,
Arti is mixing some orange paint for the class mural.
She mixes 3 squirts of yellow for every 2 squirts of red
and gets a beautiful orange color. Shannon put 9
squirts of yellow in her bowl. If she wants to get the
same orange color as Arti, how many squirts of red
Answer:
6
Step-by-step explanation:
32º+ 20 + 5x+ 4x - 1. Find x.
Answer:
32°+20+9x-1
collect like terms
32°+20-1+9x
32+18+9x
50=9x
divide both side by 9
5.6
1 significant figure
=6
-3(5x+2)-(6x-5)
correctly simplify the expression
Answer:
-21x-11
Step-by-step explanation:
-3(5x+2)-(6x-5)
use distributive property
-15x-6 - 6x-5
put like terms together
-15x-6x-6-5
simplify
-21x-11
hope this helps
6x-5 = -6(x+2)
I keep getting an incorrect fraction answer please help
Answer:
x = -7/12 or -0.583.. repeating.
Step-by-step explanation:
6x-5= -6(x+2)
___________ (distributive property)
(to group like terms)
6x-5 = -6x-12
___________ (addition poe) (add 6x on both sides to cancel -6 out)
+6x +6x
___________
12x-5 = -12
__________
+5 +5 (addition poe) (add 5 to both sides to cancel -5 out)
__________
12x = -7
__________
÷12 ÷12 (division poe) (divide both sides by 12 to get x)
x = -7/12
help ill give hella points plz thx
Answer:
Using the variables it gives us it is B=150m
Step-by-step explanation:
1.) $1800-$1350=$450
$1350 is the total balance after 3 months and $450 is the amount he has payed in those 3 months
2.) 450/3=150
You do 450/3 to find how much he is paying per month. If you want to check your work do 1800-1050=750 then do 750/5=150
So you put the numbers in B = Zachary's balance after m months and you get B=150m
Answer:
150m
Step-by-step explanation:
PLEASE HELP ME!!! -3x + 12 < 18
Determine the range from the set of ordered pairs
Answer:
2nd option
Step-by-step explanation:
range is all the outputs
What is the value of x?
Answer:
10
Step-by-step explanation:
5x - 17 = 3x + 3 (vertically opposite angles)
5x - 3x = 3 + 17
2x = 20
x = 20/2
x = 10
hope it helps you!
The sum of 4 plus 7 equals 44
Answer:
Hello!!! Princess Sakura here ^^
Step-by-step explanation:
First you have to translate it into an understandable equation like this...
[tex]4+7=44[/tex]
You don't have to solve it because it is obvious that 4 and 7 don't add up to 44.
Answer:
Step-by-step explanation:
4+7=44
11=44
11-44 is -33 i guess is what you are looking for?
What is the greatest 3/5 0.7
Answer: 0.7
Step-by-step explanation: 3/5 equals 0.6 which is less than 0.7, so 0.7 is the greater of the two.
Could someone help????
Answer:
3 1/2 + 3 1/2 is 7
Step-by-step explanation:
A. y = 1x+2!
or
B. y = 1x - 21
Answer:
B.y=|x-2|
Step-by-step explanation:
y is equal to the modulus of x-2 two because in the graph the the line cut at -2
a boat traveled 27 miles in 2 hours. at this rate, how many miles will the boat travel in 1/2 an hour
Answer: 9
Step-by-step explanation:
A number increased by 27 is 233. Find the number.
Answer:
206
Step-by-step explanation:
233 - 27 = 206
Which of the following scenarios does not have a unit rate of 8?
O Joey rides his bike at a constant rate for 4 hours, x, and travels a total distance of 32 miles.
Jaclynn buys 3 pairs of socks, X, and spends a total of $24.
O Josephine buys 0.5 pounds of grapes, x, for $4.00.
O Jerry ran at a constant rate for 8 minutes, x, and traveled 2 miles.
Answer:
Jerry's Running
Step-by-step explanation:
Joey's biking:
32/4=8 Not this one.
Jaclynn's Shopping:
24/3=8 Not this one.
Josephine's Grapes:
4/0.5=8 not this one
Jerry's Running:
2/8= .25 This one is correct
what is the LCM
OF 4, 8 and 16
Answer:
16
Step-by-step explanation:
Write the multiples of each number
4: 4,8,12,16
8: 8,16,24,32
16: 16,21,48
The smallest one that is in all three is 16
help with this !!! thanks
Answer: Casey bought 4 1/2 pounds of apples
The equation is 0.88x - $1.50 = 2.46
x is the unknown number of pounds of apples.
0.88 is the cost per pound, 0.88x is the total cost of the apples before the discount .The discount is $1.50 $2.46 is the cost after the discount.
Part b Step-by-step explanation:
0.88x - $1.50 = 2.46 . Add $1.50 to both sides
0.88x - $1.50 + $1.50 = 2.46 + 1.50
On left, 1.50-1.50=0 so "cancels' on the right, add $2.46 + 1.50 = 3.96
0.88x = 3.96 is the cost before discount . Divide both sides by .88
.88x/.88 = 3.96/.88 . .88/.88 = 1 so 1 'cancels' leaving x. 3.96/.88 = 4.5
x = 4.5
part c
4.5 is 4 1/2, the (previously unknown) number of pounds of apples.
Casey bought 4 1/2 pounds of apples.
i don't understand this i need help like helppp please
Answer:
[tex]x = 110 \\ (exterio \: angles \: of \: a \: traingle \: sum \: up \: to \: 360)[/tex]
Answer:
x = 110
Step-by-step explanation:
Assuming you require the value of x
The sum of the external angles of a triangle = 360°
The 3 angles shown are external angles.
Subtract the sum of the 2 given angles from 360 for x
x = 360 - (140 + 110) = 360 - 250 = 110
sin^2x + sin^2x + cos²x
Answer:
Answer:
A. 2 sinx cosx - 1 + 2 sin^2 x.
Step-by-step explanation:
sin2x = 2 sinx cosx
cos2x = cos^2x - sin^2x
So sin2x - cos2x = 2 sinx cosx - ( cos^2x - sin^2x)
But cos^2 x = 1 - sin^2 x, so we have:
2 sinx cosx - (1 - sin^2 x - sin^2x)
= 2 sinx cosx - 1 + 2 sin^2 x.
what is 1 + 1 (just doing this for points)
Answer:
2
Step-by-step explanation:
1+1 = 2
-4x+-3=-2x+-2
what is X?
A paper company needs to ship paper to a large printing business. The paper will be shipped in small boxes and large boxes. Each small box box of paper weighs 25 pounds and each large box of paper weighs 70 pounds. A total of 21 boxes of paper were shipped weighing 1110 pounds altogether. Write a system of equations that could be used to determine the number of small boxes shipped and the number of large boxes shipped. Define the variables that you use to write the system.
Answer:
25s+70l=1110
s+l=21
3) The square root of 3.052009 has
decimal places
Answer:
uhm yes 1.747
Step-by-step explanation:
Answer:
1.7469999999
Step-by-step explanation:
consider the following figure
Answer:
Hello!!! Princess Sakura here ^^
Step-by-step explanation:
The top left one would be choice A.
The one to the right the would be
d=118
g=62
n=96
Then lastly the bottom one would be choice B.