Answer:
true i think
Step-by-step explanation:
C(x) = 5x^2 + x + 7 and
d(x) = x^2 – 10
d(c(3))
Answer:
d(c(3))=30I5
Step-by-step explanation:
C(3)=5×9+3 +7=55
d(c(3))= ( 55)^2-10= 3O 15
YOU WILL GET 40 POINTS! AND BRAINLY FOR WHO EVER IS TE FIRST CORRECT ONE!!!!!!!!!!!!!!!!
Answer:
Ok so
Step-by-step explanation:
1st one is Infinte
2nd one is one soultion
3rd one is not
4th one is Infinte
5ht one is no
Hewo :>
:> 2(x-5) = 2(x-5) is infinitely
:> 5(x+4) = 5(x-6) is no solution
:> 5(x+4) = 3(x-6) is one solution
:> 4(x-2)=4(x+2) is infinitely
:> x+2(x-5)=3(x-2)-4 is no solution
Have a nice Kawaii day :>
joanna has 20 pieces of candy. she decides then between her X friends. How many pieces does each friend get?
a: -20
b: 20/x
c: 20x
Answer: 20/x
Step-by-step explanation:
are any of these equivalent to 3/8 ?
2/7
8/3
9/24
5/18
Answer:
9/24 is
Step-by-step explanation:
Yup
-BaconSoup the scientist LOL
Answer:
9/24
Step-by-step explanation:
[tex]\frac{2}{7}= 0.28571428571\\\\\frac{3}{8}= 0.375\\\\\frac{2}{7}\neq \frac{3}{8}\\\\ \frac{8}{3}= 2.666...\\\\\frac{8}{3} \neq \frac{3}{8}\\\\\frac{9}{24}=\frac{9/3}{24/3} =\boxed{\frac{3}{8}}\\\\ \boxed{\frac{9}{24}=\frac{3}{8}}\\\\\frac{5}{18}= 0.27777...\\\\\frac{5}{18} \neq \frac{3}{8}[/tex]
Hope this helps.
PLZ HELP ME! 1ST GETS BRAINIEST! THIS IS DUE TODAY!
Pretend a classmate missed the lesson today. What would you tell them about how to make a table to represent a rate? How would you tell them how to use the table to make a graph?
Answer:
You would tell them by labeling the x and y and the titles of the graph and what corresponds to it
Step-by-step explanation:
look at picture and answer ASAP
Answer:
its B and A
Step-by-step explanation:
Answer:
its in between the fist and second one cuusing what is given thats what i figured out
Step-by-step explanation:
3 x 36= 108 / 3 x 15 = 45
9 x 12 = 108 / 9 x 5 = 45
6 x 18 = 108 / 6 x 7 = 42
i hope this helps :)
22% of 152
HELP WHATS THE ANSWER
Answer:
14.47
Step-by-step explanation:
1. What is the solution of n^2-49=0?
a.-7
b.7
c.+7
d. no solution
2.What is the solution of x^2+64=0?
a.-5
b.8
c.+8
d.no solution
3.What is the side length of a square with an area of 144x^2?
a.12
b.12x
c.+12x
d.no solution
4.What is the value of z so that -9 and 9 are both solutions of x^2+z=103?
a.-22
b.3
c.22
d.184
Answer:
it would be d for #1 because it has no solution for the question
In a survey of 3100 people who owned a certain type of car, 1240 said they would buy that type of car again. What percent of the people surveyed were satisfied with the car?
Answer:
40% of people would buy the car again.
Hope this helps!
Step-by-step explanation:
Two oranges and five lemons cost $2.95. Three oranges and two lemons cost $2.50. How
much would five oranges and three lemons cost?
Answer:
40 p
Step-by-step explanation:
2.50 plus 40 equal 2.90 and that is how u get ur answer
Find the measure of one exterior angle of a regular octagon
Answer:
each of the eight angles measures 45 degrees
Step-by-step explanation:
The sum of all exterior angles of any polygon always measures 360 degrees.
If it's 'regular' then all angles have the same measures.
If it's an octagon, then it has 8 sides.
360 divided by 8 = 45
What is 2/3 - 2/5 =
Answer:
2/3 - 2/5 = 4/15
Step-by-step explanation: 2/3 x 5/5 = 10/15 2/5 x 3/3 = 6/15
Hope this helps!
A constant volume of cookie dough is formed into a cylinder with a relatively small height and large radius. When the cookie dough is placed into the oven, the height of the dough decreases as the radius increases, but it retains its cylindrical shape. At time t, the height of the dough is 8 mm, the radius of the dough is 18 mm, and the radius of the dough is increasing at a rate of 2 mm per minute.
Part A: At time t, at what rate is the area of the circular surface of the cookie dough increasing with respect to time? (5 points)
Part B: At time t, at what rate is the height of the dough decreasing with respect to time?
Answer:
a) dA/dt = 125,42 mm/min
b) dh/dt = - 1,78 mm/min
Step-by-step explanation:
The volume of the cylinder is:
V(c) = π*r²*h ( r and h radius of the base and heigh respectively )
Then the surface area is: Area of the base : π*r²
Plus lateral area : h*2*π*r
A(c) = π*r² + 2*π*r*h
With the help of differentials we obtain:
dA/dt = 2*π*r*dr/dt + 2*π*h*dr/dt + 2*π*r*dh/dt (1)
In this equation and at time t we know:
r = 18 mm dr/dt = 2 mm/min h = 8 mm dh/dt = ??
dA/dt = increasing rate of the surface area ( with respect to time)
To find dh/dt we know:
V(c) is constant, then
V(c) = π*r²*h then h = V(c) / π*r²
dh/dt = - [V(c)*2*π*r*dr/dt ] / π²*r⁴
By subtitution of V(c)
dh/dt = - [ π*r²*h *2*π*r*dr/dt ] / π²*r⁴
dh/dt = - [2*π²h*r³*dr/dt ] /π²*r⁴
dh/dt = - [2*h* dr/dt ] / r
dh/dt = - 2*8*2 / 18 mm/min
dh/dt = - 1,78 mm/min
By subtitution in equation (1)
dA/dt = 2*π*r*dr/dt + 2*π*h*dr/dt + 2*π*r*dh/dt
dA/dt = 2*π*18*2 + 2*π*8*2 + (- 2*π*18*1,78 )
dA/dt = 226,20 + 100,53 - 201,31
dA/dt = 125,42 mm/min
Following are solutions to the given points:
Formula:
Cylinder volume [tex]v = \pi r^2 h...............(i)[/tex]
[tex]\to \frac{dr}{dt} = 2 \frac{mm}{min}\\\\ \to \frac{dh}{dt} = -2 \frac{mm}{min}\\\\ \to h=8\\\\ \to r=18 \\\\[/tex]
Part A:
Calculating the circular area of the surface:
[tex]\to A=\pi r^2\\\\[/tex]
So, [tex]\frac{dA}{dt}=2 \pi r \frac{dr}{dt}.........(ii)[/tex]
Therefore
[tex]\to \frac{dA}{dt}= 2\pi \times 18 \times 2= 72 \pi \ \frac{mm^2}{min}\\\\[/tex]
Part B:
[tex]\to \frac{dh}{dt}= - 2 \frac{mm}{min}[/tex]
Learn more:
brainly.com/question/19667963
evaluate 8 times (2-3) to the 2 power divided by 4
Answer:
Step-by-step explanation
The range of a relation is given.
-2,-1,0,1,2
Which domain would make the relation not a function?
o 1,1,0,-1, - 1
0 -2, -1,0,1,2
O 0,-1, 2, 1,0
0 0,1,2,3,4
Answer:
0 -2, -1,0,1,2
Step-by-step explanation:
Which mapping diagram does not represent a function?
Answer:
A.
Step-by-step explanation:
The definition of a function is that each input has only 1 output. That does not mean that 2 different inputs can not have the same output. A. shows that the number 3 has 2 outputs. My explaining is not that good but trust me.
PLZ SOLVE I WILL GIVE BRAINLESET
Answer:
LB=12ft
Step-by-step explanation:
how 2 explain this?
Thanksss.
Explanation: I would substitute 2 into x which would be y = 2(2) + 3. I would then multiply 2 and 2 which would give me 4 and then add 3 which I get 7. This means that (2,5) is not a solution to the equation.
during the first week of the Season Carly averaged 27 points per basketball game then she went on a scoring streak.
Answer:
Part a: 7.5
Part B: It changes by 1.5
Step-by-step explanation:
PART A:
In the table you are suppose to find out how much it increases by so you subtract,
[tex]4.5 - 3 = 1.5[/tex]
[tex]6 - 4.5 = 1.5[/tex]
Since we know the difference is 1.5 you will add 6 by 1.5
[tex]6 + 1.5 = 7.5[/tex]
Therefore, the answer is 7.5
PART B: It changes by 1.5 because the difference between the increase in points is 1.5
hi!! please help :) i hope you guys are having a good day/night!!
Answer:
x = 13, y = 26
The length of the sides of Δ QRS are QR = 104, QS = 468, RS = 76
Step-by-step explanation:
In ΔRQS
∵ M is the mid-point of side RQ
→ That means M divide RQ into 2 equal parts RM and MQ
∴ RM = MQ
∵ RM = 4x
∵ MQ = 52
→ Equate them
∴ 4x = 52
→ Divide both sides by 4 to get x
∴ x = 13
∵ P is the mid-point of side QS
→ That means P divide QS into 2 equal parts QP and PS
∴ QP = PS
∵ QP = 9y
∵ PS = 234
→ Equate them
∴ 9y = 234
→ Divide both sides by 9 to get y
∴ y = 26
→ Find the length of each side
∵ RQ = 52 + 52
∴ RQ = 104
∵ QS = 234 + 234
∴ QS = 468
∵ RS = 38 + 38
∴ RS = 76
∴ The length of the sides of Δ QRS are QR = 104, QS = 468, RS = 76
Note: PS = 234 is wrong because it made the length of the sides QS = 468, which could not be because the sum of any 2 sides of a triangle must be greater than the 3rd side. So check it.
what is 9 + 10? hi my name is andy. i have a dad who works on this website and i want to prank him
Answer:
19.
How do you want to prank him?
Step-by-step explanation:
Answer: 19
Step-by-step explanation: 9+10 is equal to 19. (I get the joke but I don't want to get flagged)
please help
Solve |6k + 12| + 9 = 9 for k
Answer:
k = -1/2
Step-by-step explanation:
|6k + 12| + 9 =9
6k + 12 = 9-9
6k + 12 = 0
6k = -12
k = -1/2
Simplify. 23+4⋅8
A. 40
B. 80
C. 96
D. 160
Answer:
A i guess
Step-by-step explanation:
23 + 4 ⋅ 8
I got the answer 55 so see what is close to 55
Answer:
2 ^ 3 + 4 * 8 = 40
Step-by-step explanation:
So going by the order of operations, PEMDAS,
There are not parenthesis so we can skip that part.
exponents on the other hand we have 2^3. Don't be fooled. It's not 2 * 3. What you have to do is multiply 2 by itself 3 times. So 2 * 2 * 2 = 8. Step one Done!
The M in PEMDAS is multiplication! So we solve that part next! 4 * 8 = 32. Step 2 Done!
Now for the final step, for A in PEMDAS you have to add both sums together. 8 + 32 = 40
Final answer: 40
I hope this helps! <3
Find the domain and range of the relation of 6,5, -13, 1, -4,2, -5, 23, -10, -5
Answer:
[tex]Range = \{5,1,2,23,-5\}[/tex]
[tex]Domain = \{6,-13,-4,-5,-10\}[/tex]
Step-by-step explanation:
Given
[tex](6,5)\ (-13, 1)\ (-4,2)\ (-5, 23)\ (-10, -5)[/tex]
Required
Determine the domain and range
A relation has the following format:
[tex]\{(x_1,y_1),(x_2,y_2),(x_3,y_3),(x_4,y_4)........(x_n,y_n)\}[/tex]
The range of the relation are:
[tex]\{y_1,y_2,y_3,y_4........y_n\}[/tex]
While the domain are:
[tex]\{x_1,x_2,x_3,x_4........x_n\}[/tex]
Using this analysis, the domain of the relation is:
[tex]Domain = \{6,-13,-4,-5,-10\}[/tex]
and the Range is
[tex]Range = \{5,1,2,23,-5\}[/tex]
The regular price of a pair of sneakers is $80. They are on sale now for $50. What is the percent decrease in the price of sneakers?
9514 1404 393
Answer:
37.5% decrease
Step-by-step explanation:
The percentage change is given by the formula ...
pct change = ((new price) -(original price))/(original price) × 100%
= (50 -80)/80 × 100%
= -3/8 × 100% = -37.5%
The negative sign indicates a decrease.
The decrease in price is 37.5%.
Sue drank 3 glasses of juice. She drank a total of 24.3 ounces. How much did each glass
hold?
072.9 ounces
27.3 ounces
21.3 ounces
8.1 ounces
Answer: 8.1 ounces
Step-by-step explanation:
Answer:
She took 8.1
Step-by-step explanation:
you take 24.3 (the total number of ounces then divide by 3 since you drongk 3 glasses and you get 8.1
Mrs. Healy has two dogs rocky and chino. rocky eats 2 dog treats each day and Chino eats 5 each day. How many treats do the dogs eat in 4 days?
Answer:
28 treats
Step-by-step explanation:
2x4
5x4
20+8=28
Answer:
the answer is 28 treats in 4 days for both dogs
Step-by-step explanation:
2*4=8+ 5*4=20= all together 28 treats for 2 dogs
hope this helped
x+y=9.35 5x-y=8.75
how to solve this math problem
Answer:
x=3.01667
Step-by-step explanation:
[tex]x+y=9.35\\5x-y=8.75\\By\ adding\ the\ system\ of\ equations:\\(x+y)+(5x-y)=9.35+8.75\\6x=18.1\\x=3.01667[/tex]
Help plz it’s 50 points help
Answer:
Step-by-step explanation:
Answer:
frist answer is right
Step-by-step explanation:
9X3 + 9 X 2 -43 X - 35
The difference between two numbers is 8. Twice the number is 4 more than the larger number. What is the smaller number?
Answer:
If the two numbers are x and y, then:
x + y = 8
18 - 2x = 4y - 2.
When we subtract y from both sides in our first equation we get:
x = 8 - y, so:
18 - 2(8 - y) = 4y - 2
18 - 16 + 2y = 4y - 2
2 + 2y = 4y - 2
2y = 4
y = 2
Since x + y = 8, and y = 2, x = 6, and since 6 > 2, the larger number is 6.