Answer:
495
Step-by-step explanation:
there are three 10-year periods in 30 years so multiply 55 · 3(3), which is 495
The number of bacteria in a Petri dish increases by 18% every hour. If there were initially 200 bacteria placed in the Petri dish, which function can be used to determine the number of bacteria in the Petri dish in exactly x hours?
Answer:
Step-by-step explanation:
an exponential equation has the form y=ar^x where y=final amount, a=initial amount, r=rate, and x=time, in this case
y=200(1.18)^x
Find the exact value of x.
help me please- the fraction is 5/2.
Answer:
Step-by-step explanation:10.8
Answer:
A 6
Step-by-step explanation
Divide 15 by 5/2 because MN is smaller than JK
6
How many inches are in 1 & 2/5 groups of 1 & 2/3 inches? *
8th grade math, please help.
Answer:
49
Step-by-step explanation:
180-131
Answer:
45°
Step-by-step explanation:
Here, since m||n, 131°+x=180°
x=180-131
x=49°
Solve for the value of x
Answer:
i think 6 is ans
hope u like it
ASAP WHO EVER ANSWER THIS QUESTION WILL BE MARKED BRANLIEST URGENT
Answer:
i think its A. . .
Step-by-step explanation:
[-10-(6 - 14) + 16]
Answer:
14
Step-by-step explanation:
Answer:
14
Step-by-step explanation:
Jasmine gets paid $150 each week and $55 for every laptop that she sells. Write and equation that represents her weekly income.
Answer:
If x represents the number of laptops sold and y represents the total weekly income, our equation would be y = 55x + 150
Answer:
Step-by-step explanation:
Every week, the given or set in stone amount of money she receives $150. So automatically, the first part of the equation is 150x, because x represents the number of weeks, and 150 is $150. So for instance, if she works for two weeks, she will earn $300. Anyway, she has an additional amount of money she gets, which is $55 for every laptop she sells. This isn't a set in stone amount of money. She might not always earn the extra $55, because she might not sell a laptop for a certain week. So, the final equation would be 150x+55. Hope this helped :)
Please help me I need to get this right asap
Answer:
B
Step-by-step explanation:
Pleas help I need help
Answer:
i think c just see what the other people say first to make sure
Step-by-step explanation:
80 timess 40 plus 60
Answer:
3260 hope i helped u
Step-by-step explanation:
-4/9 times (-2) its really hard and i just dont know the answer
PLS PUT THE SLOPE INTERCEPT FORM OF THIS LINE ILL GIVE BRAINLIEST!!
Answer:
Y=2x+(-1)
Step-by-step explanation:
The slope/m = 2/1 and the Y int.= -1 So for it to be in slope intercept form it would look like this Y=2x+(-1).
Please help with this, I have no clue what it means.
Answer:
LN = 4.326
Step-by-step explanation:
dropping a perpendicular from point k to LM
call that point on line LM, point X
angle KLM = 47 degrees so angle NKL = 28 degrees
sin 47 = KX/8.9
KX = 6.509
angle LKX = 90-47-28 = 15 degrees
tan 15 = XN/6.509
XN = 1.744
cos 47 = XL/8.9
XL = 6.070
XL-XN=LN
LN = 6.070-1.744 = 4.326
PLS HELP 30 ISH POINTS
Answer:
this is my alt, btw. I'm taking these points back from myself before they get stolen
10+8÷2(4+3) simplify the expression using the order of operation
Answer:
truly ez points
Step-by-step explanation:
2. 252 - 200 – 8 x 5 = 247
Insert parenthesis to make the answer true
find the measure of side b
Answer:
227in
Step-by-step explanation:
260 * cos(29 degrees) = 227.401
Given the relation y = x² + 3x + 2, find the outputs for x = -2, -1, 0, 1, and 2.
Complete the table (marking brainliest)
Answer:
3x+6
3x+3
3x+2
3x+3
3x+6
Step-by-step explanation:
1. -2^2 + 3x +2=4+3x+2=6+3x
2. -1^2 + 3x +2=1+3x+2=3+3x
3. 0^2+3x+2=0+3x+2=2+3x
4. 1^2+3x+2=1+3x+2=3+3x
5. 2^2+3x+2=4+3x+2=6+3x
Hi guys can you answer my math question
Answer:
Any 3 trinalges
Step-by-step explanation:
total triangles= 9
1/3 of 9 = 1/3 x 9 = 3
So, shade 3 triangles
I hope im right!1
Step-by-step explanation:
There are total 9 parts of the triangle
⅓ of 9 is 3.
Therefore shade any 3 parts.
Renting jet skis from Jerry's water sports costs $20.00 per hour plus a one-time fee of $8.00. Renting jet skis from Splash of fun costs $25.00 per hour with no one-time fee. The cost to rent a jet ski depends on the total number of hours,h, rented. How many hours must you rent a jet ski for the cost to be the same at jerry's water sports and at splash of fun?
Answer:
The indifference point is 1.6 hours.
Step-by-step explanation:
Giving the following information:
Jerry's water sports:
Variable cost= $20.00 per hour
Fixed cost= $8
Splash of fun:
Variable cost= $25.00 per hour.
First, we need to establish the system of equations:
Jerry= 8 + 20x
Splash= 25x
x= number of hours
Now, we need to equal both formulas and isolate x:
20x + 8 = 25x
8=5x
1.6= x
The indifference point is 1.6 hours.
Prove:
erry= 8 + 20*1.6= $40
Splash= 25*1.6= $40
2) Uma equação foi descrita da seguinte maneira:
(k² – 4) x³ + ( k – 2 )x² + 7x - 8 = 0
Analisando os coeficientes, o valor de k que faz com que essa equação seja uma equação do 2º grau é:
a) k = ± 2
b) k = + 2
c) k = - 2
d) k = 0
e) k = 4
Answer:
c) k = - 2
Step-by-step explanation:
Equação de Segundo Grau:
Uma equação de segundo grau tem o seguinte formato:
[tex]ax^2 + bx + c = 0[/tex]
Em que [tex]a \neq 0[/tex]
Caso tenham potências de x maiores que dois, o termo que multiplica essas potências deve ser 0.
Neste exercício:
Tem-se a seguinte equação:
[tex](k^2 - 4)x^3 + (k-2)x^2 + 7x - 8 = 0[/tex]
Para ser do segundo grau, necessita-se que:
[tex]k^2 - 4 = 0[/tex]
[tex]k^2 = 4[/tex]
[tex]k = \pm \sqrt{4}[/tex]
[tex]k = \pm 2[/tex]
E também
[tex]k - 2 \neq 0[/tex]
[tex]k \neq 2[/tex]
A intersecção entre [tex]k = \pm 2[/tex] e [tex]k \neq 2[/tex] é [tex]k = -2[/tex], e portanto a resposta é dada pela alternativa c.
O valor de k que torna a equação uma equação de segundo grau para a equação considerada é dado por: Opção C: k = -2
What is degree of an equation?For a single variable equation, degree of an equation is the highest power the variable possess, such that its coefficient is non-zero.
A second degree equation is that equation where the maximum power involved in that equation is 2 (such that its coefficient is non-zero).
For this case, the considered equation is:
(k² – 4) x³ + ( k – 2 )x² + 7x - 8 = 0
For making it second degree, we would have to vanish the coefficient of x³, and by vanish, we mean we would like to make it 0, but simultaneously, we'd have to take care that coefficient of x² doesn't become 0 as we need it to be non-zero.
So we get two mathematical statements:
Coefficient of x³ = 0Coefficient of x² ≠ 0or
[tex](k^2 - 4) = 0\\k - 2 \neq 0[/tex]
Taking first equation, we get:
[tex]k^2 -4 = 0\\k^2 = 4\\k = \pm \sqrt{4} = \pm 2[/tex]
Thus, k = 2 or k = -2
From second statement, we get:
[tex]k -2 \neq 0\\\text{adding 2 on both the sides}\\k \neq 2[/tex]
Thus, from both the results, we conclude that k = -2 is correct choice.
Thus, the value of k that makes the equation a second degree equation for the considered equation is given by: Option C: k = -2
Learn more about second degree equation here:
https://brainly.com/question/17167165
(4pts)
Show all Work!!!!
1)
The sum of four consecutive integers is -18. What are the four integers?
(Use a let statement)
Answer:
-4.5
Step-by-step explanation:
this the work, -4.5-4.5-4.5-4.5
What is the area of this parallelogram?
364 cm²
143 cm²
91 cm²
52 cm²
Answer:
which parellogram
Step-by-step explanation:
where is photo
Answer:
143cm2
Step-by-step explanation:
I did the quiz :> (K12)
find the circumference of a circle of radius 2.1m
13.2
Step-by-step explanation:
r = 2.1
circumference of circle = 2πr
=2 × 22/7 × 2.1
= 13.2
if 8 men can build a house in 90 days, in how many days can 20 men working under the same rate build the house?
It will take 36 days for 20 men to complete the building
Solve x/-4 > 8
1. x > -2
2. x < -32
3. x < -2
4. x > -32
Answer:
x<-32
Step-by-step explanation:
I hope this helped have a good night
how do i find a slope
Answer:
To find the slope, you divide the difference of the y-coordinates of 2 points on a line by the difference of the x-coordinates of those same 2 points
Answer:
To the find slope in slope-intercept form (y=mx+b) you just find the m of the equation for example: y=4x+8 the 4 is the slope since it is replacing the m
To find the slope in two points (x1,y1) (x2,y2) follow this formula
y2-y1/x2-x1
For example: Find the slope of (4,9) and (9,19)
19-9/9-4 Which is 10/5 simplify: 2
The slope is 2
Step-by-step explanation:
PLEASE ANSWER what is the area of a circle with a radius of 5 inches? use 3.14 for π Enter your answer as a decimal in the box.
if you times the two questions the answer is 1.5700 I hope this helps because I'm not that good at math! :)