Answer:
incorrect its actually 14%
Step-by-step explanation:
A scientist is testing a new antibiotic on some bacteria she discovers the the antibiotic kills half of the Bactria every hour if she starts with 42000 bacteria what equation can be used to predict the number of bacteria after x hours
a). y= 42000(2)^x
b). y=42000(1/2)^x
c). y=42000(1.5)^x
d). y=(42000/2)^x
find x. PLSSSS HELP HURRYYY !!
Answer:
x = 141
Step-by-step explanation:
David is running a unique coffee shop. He
charges $25 per coffee. If a customer pays
$67 for 2 coffees, how much change should
be given back by David?
PLEASEEEE HELPPPPPP!!!
Answer:
18
Step-by-step explanation:
PLEASE HELP ME PLEASE
Answer:
B
Step-by-step explanation:
(f – g)(x) = f (x) – g(x)=
[tex]3 {x}^{2} - 4x + 3 \\ - 2 {x}^{2} + 6x + 4 \\ = 5 {x}^{2} - 10x - 1[/tex]
What is 0.000056023 written in scientific notation?
Answer:
5.6023 × 10^-5
Step-by-step explanation:
Let me know if you need an explanation.
Answer:
0.00005602
Step-by-step explanation:
0.00005602
(hope this helps can i plz have brainlist :D hehe)
HELP TIMED!!
WILL GIVE BRAINLIEST
y=-5/4x-1 what is the slope and y intercept
Answer:
Slope = -5/4. And y-int = (0,-1)
Step-by-step explanation:
The sum of twice a number and 4 times another number is 4. The difference of the numbers is 5. Find the numbers(help a sis out)
Answer:
1st number = 4
2nd number = -1
Step-by-step explanation:
Let n = 1st number
Let m = 2nd number
2n + 4m = 4
n - m = 5
Substitu method, let n = 5 + m
2(5+m) + 4m = 4
10 + 2m + 4m = 4
6m = -6
m = -1
find n:
n - (-1) = 5
n + 1 = 5
n = 4
if layla can right 20 essays in 15 minutes and 8 in 6 minutes then how many can she right in 45 minutes?
Answer:
60! hope this helps!
Step-by-step explanation:
Michelle has 2/3 of her monthly allowance left. She plans to save 1/4 of the money she has left . What fraction of the original allowance does she plan to save
Answer: The fraction of the original allowance does she plan to save = [tex]\dfrac16[/tex]
Step-by-step explanation:
Let x = original monthly allowance
Monthly allowance left = [tex]\dfrac23x[/tex]
She plans to save = [tex]\dfrac14[/tex] of (Monthly allowance left)
= [tex]\dfrac14\times\dfrac23x[/tex]
[tex]=\dfrac{2}{12}x\\\\=\dfrac{1}{6}x[/tex]
i.e. the fraction of the original allowance does she plan to save = [tex]\dfrac16[/tex]
please someone help me, will give brainily
Answer:
sorry I don't know sis ☹️
I NEED THE VALUE OF X PLEASE HELP!
Answer: 25.81
Step-by-step explanation:
We can see its a right triangle and then with Squareroot(21^2 + 15^2) = 25.81
In the given figure, ABCD is a rectangle in which ∠APB = 100°. The value of x is:
Answer:
Given that angle APB = 100°
Angle CPB = 180°- 100°. (Angle APB and CPB form a linear pair)
We know all triangles formed here are isosceles
Therefore,
We can take angle PBC= angle PCB = x
Now,
Angle CPB+ x + x = 180°. ( Triangle sum property)
100° + 2x = 180°
2x = 180°- 100°
2x= 80°
x= 80°/2
x= 40°
Hope you found this helpful. Please mark this as the brainliest answer if you do.
Someo ne pllllzzzz help me asap i will give brain thingy and 20 points!
Part 1) Finding the inverse
Let x = r and y = H(r)
We have the equation y = 6240(1 + x/100)^t which is the same as saying y = 6240(1 + 0.01x)^t since 1/100 = 0.01
From here, swap x and y to get the equation x = 6240(1+0.01y)^t
Let's solve for y
x = 6240(1+0.01y)^t
6240(1+0.01y)^t = x
(1+0.01y)^t = x/6240
1+0.01y = (x/6240)^(1/t)
0.01y = (x/6240)^(1/t)-1
100*0.01y = 100*((x/6240)^(1/t)-1)
y = 100*((x/6240)^(1/t)-1)
y = 100*(x/6240)^(1/t) - 100
This becomes r = 100*(H/6240)^(1/t) - 100 after we replace y with r and x with H. Note the r and H swapped places, just like x and y did. Earlier we had H isolated on the left, but now r is isolated on the left.
We could write r(H) = 100*(H/6240)^(1/t) - 100 to mean the same thing.
So what exactly does this inverse function do? Well the original function tells us the number of households for any given growth rate, which is r.
The inverse function swaps things around to allow us to find the growth rate if we know how many households there are. We're working backwards. In both cases, t is held to some constant fixed value.
===========================================================
Part 2) Finding the growth rate if the number of households is 7800 after 3 years.
We're going to plug in H = 7800 and t = 3 into the inverse function we found to determine the value of r, or r(H)
r(H) = 100*(H/6240)^(1/t) - 100
r(7800) = 100*(7800/6240)^(1/3) - 100
r(7800) = 7.72173450159419
You'll need your calculator to get this approximate value. After rounding to two decimal places, we get r(7800) = 7.72
Since r = 7.72, this means the growth rate is 7.72%
if you know what is a pie
Please help me if you can. If possible please write how you got the answer so I can remember it next time I get a question like this.
Answer:
Step-by-step explanation: ༼ つ ◕_◕ ༽つ
So what I'm thinking right. If it costs my pal bob $0.25 for each cupcake and an additional $15 per month we will probably need to variables. So check it
Our positive when we make money is when bob sells cupcakes right? but our negative where bob is spending his money is the $0.25 it cost per cupcake and the $15 a month he also has to pay for expenses
$1.50c-$0.25c-$15.00m
c represents the amount of cupcakes while m represents each month
So if Buddy Boy Bob sold 85 cupcakes in one month lets try to use our equation to solve for profit shall we.
$1.5(85)-$0.25(85)-$15(1)= Bob made about $91.25
Hey I'm Chloe, Can You Help Me Thank you :)
y varies proportionally with x. When x = 2, y = 18.
What is the constant of proportionality for this relationship?
Answer:
y = 9x
Step-by-step explanation:
Can anyone answer this for me thanks.
Answer:
ghhhbvhnv
Step-by-step explanation:
kjkjkjjn,nj,jn,jn
Riko is ordering a submarine sandwich for 6 people. Each person will eat the same size section of the sandwich. The section size should be at least 4 inches. What is the length of the smallest sandwich Riko should order?
Answer: 24 inches.
Step-by-step explanation:
If each section length is 4 inches, then that means that each person will need to eat a sandwich section that is at least 4 inches.
There are 6 people, which means that each person will eat 4 inches of a sandwich.
To calculate the length of the sandwich Riko should order, we should mutliply 6 by 4, because there are 6 people and each person will be eating 4 inches of a sandwich.
6 x 4 = 24.
In conclusion, the smallest sandwich Riko should order is a sandwich that is 24 inches long.
(Quick Note: This is also the smallest sandwich Riko could order, because the text states that each person eats at least 4 inches.)
mrs. kelly asked her students to plot the number of books they read over summer. Using the dot plot, how many students answered the question?
Answer:
18
Step-by-step explanation:
Add all the dots. 2+1+3+2+6+3+1=18
Please show workings.
To start a transport company, a business man needs at least 5 buses and 10 minibuses .
He is not able to run more than 30 vehicles all together.
A bus takes up 3 units of parking space, a minibus takes up 1 uni of parking space and there are only 54 units available.
If x and y are the number of buses and minibuses respectively.
a. Write down for inequalities which represents the restrictions of the businessman.
b. Draw a gaph that shows a region representing possible values of x and y.
c. Find the greatest number of:
i. buses
ii. minibuses that the business can run
9514 1404 393
Answer:
a) x≥5; y≥10; x+y≤30; 3x+y≤54
b) see attached
c) i. 14 buses; ii. 25 minibuses
Step-by-step explanation:
a. The given restrictions are ...
x ≥ 5 . . . . . . . . . minimum number of buses
y ≥ 10 . . . . . . . . minimum number of minibuses
x + y ≤ 30 . . . . .maximum number of vehicles
3x +y ≤ 54 . . . . maximum number of parking units
__
b. In the attached, we have chosen to make the solution space white. The boundaries are dashed where they are included in the solution space. The vertices of the solution space are marked on the graph.
__
c. The second attachment shows the maximum numbers of each.
i. maximum buses: 14 (and 12 minibuses)
ii. maximum minibuses: 25 (and 5 buses)
A union negotiates for a cost of living raise of 7%. What is the raise for a union member whose salary is $40,240? What is this person’s new salary?
$2816.80 is the raise
21 is 30% of 70
Find DC (Image Below)
Answer:
79239729379249
Step-by-step explanation:
your aswer is 284389300 oo
Write an algebraic expression for the following word expression.
13 more than the product of m and 3
Evaluate the expression for the value of the variable: 6
Answer:
3m + 13 = 31 I hope this helps you!
what is the answer to 35% of 820
Answer:
35%of 820
35/100×820
287
...........
Answer:
287
Step-by-step explanation:
100% = 820
35% = 820 ÷ 100 × 35
= 287
-5x = 25
what is the answer for x?
Answer:
i think its -5
Step-by-step explanation:
if you devide 25 by -5 you get -5
Answer: x = -5
Step-by-step explanation:
We can use inverse operations to solve the equation. Because the term "-5x" is multiplication (because you are multiplying x by -5), we can use division to solve the equation.
First, we will divide -5 from 25.
25 ÷ -5 = -5.
Because of this, x = -5!
If we're not sure, we can also check the equation.
-5 x -5 = 25, so the answer is true.
In conclusion, x = -5!
Tom needs to buy a wood board long enough to cut into 4 pieces,
each of which needs to measure 8.5 inches. Estimate to the nearest inch
7
how long of a board Tom needs to buy.
A. 36 inches
B. 32 inches
C.40 inches
D. 9 inches
what's a variable?????????????
Answer:
In mathematics, a variable is a symbol which functions as a placeholder for varying expression or quantities, and is often used to represent an arbitrary element of a set. In addition to numbers, variables are commonly used to represent vectors, matrices and functions. In science, there is a independent and dependent variable.
Step-by-step explanation:
Answer:
VARIABLE MEANING: A variable is a letter used to describe an unknown number. A quantity that can change or vary, taking on different values. A letter or symbol representing a varying quantity.
CO EFFICIENT MEANING: A number next a variable behind the letter examples: 4m -3x 6y 5w
EXPRESSION MEANING: An expression is a sentence with a minimum of two numbers and at least one math operation. This math operation can be addition, subtraction, multiplication, and division.
TERM MEANING: It's either a single number or variable, or numbers and variables multiplied together. Terms are separated by + or − signs, or sometimes by divide.
Используя теорему о внешнем угле треугольника, найдите угол С.