Answer:
see below
Step-by-step explanation:
brand A = 450 / 1
= P 450 per kg
brand B = 485 / 1.5
= P 323.33 per kg
therefore, brand B is much cheaper
Solve: x³-7x²+36=0.
Answer:
3,6,-2
Step-by-step explanation:
a+2a+b = 7
2a^2b = -36
a*2a + ab + 2ab = 0
or, a(2a+3b) = 0
so, b = -2a/3
Solve those and you find 3,6,-2
Which is true about x, the quotient of the division problem shown below?
х
81 918
O The quotient contains a repeating decimal.
O The quotient contains a terminating decimal.
O The quotient is a whole number less than 11.
O The quotient is a whole number greater than 11.
Answer:
I think its the first answer
Step-by-step explanation:
The answer is choice 2 and 3, that is "The quotient has a final decimal and the whole number is less than 11".
Step-by-step explanation:
The product of a ratio: amount (r) over other(s) (variance from 0) becomes mandatory to note this quotient and in the following case Thus q is = 0.0882352941.
It wasn't a repeating decimal, however a final decimal, so it's got an end.
Its quotient may be less than 11 in total.
Numbers of W = {0,1,2, ...} and 0 < 11 are provided for this entire series of data therefore It's real .
hope this helps.
Please Help
A doughnut shop charges $0.50 for each doughnut and $1 for a carryout box. Shirley has $10 to spend. Which inequality can be used to find d, the number of doughnuts she could have bought if she also wants them in one carryout box?
A) 0.50 + 1d ≥ 10
B) 0.50 + 1d ≤ 10
C) 0.50d + 1 ≥ 10
D) 0.50d + 1 ≤ 10
* I think it is d but I'm not sure*
Answer:
I believe it's B,hope this helps! :)
find the sum of
a)-b-4a,7b-6b
b)6d-4c,7c+6d
Answer: −3a−b;b
−4c+6d;7c+6d
Step-by-step explanation:
A train can travel 1136 miles in 4 hours. What is the unit rate that this train is traveling per hour?
miles per hour. (15 points)
Answer:
284 miles per hour
Step-by-step explanation:
1136/4 = 284 when you divide these you are dividing how many miles the train went and how long it took for the train to go that far making the train go 284 miles per hour
hope this helps and make me brainliest please
HELP HURRYYY, like it’s due in 20 minutes
Answer:
D is the right answer
Step-by-step explanation:
[tex]3.0 {} \times 10^{8} = 6.5 \times 10^{9} \\ = 3.5 \times 10 ^{1} [/tex]
Here's the EXPLANATION !! Pls mark as brainliest...!!
You collect 30 pieces of Halloween candy and you give x pieces to
friends. Your neighbor collects 45 pieces of candy and gives away
twice as many as you. If you end up with the same number of
pieces, how many did you give away?
Answer:
You gave away 15 pieces of candy.
Step-by-step explanation:
Let x represent the number of pieces you give to friends.
Your equation:
30 - x
Your neighbor's equation:
45 - 2x
Set them equal to each other.
30 - x = 45 - 2x
Evaluate.
30 - x = 45 - 2x
-15 = -x
15 = x
hope this helps :)
Helps please does that look right to y’all ?
===============================================
Work Shown:
i = P*r*t .... simple interest formula
i = simple interest
i = 2075-1000 = 1075
P = 1000 = amount borrowed (principal)
r = unknown interest rate
t = 5 = time in years
So,
i = P*r*t
1075 = 1000*r*5
1075 = 5000r
5000r = 1075
r = 1075/5000
r = 0.215
r = 21.5%
Solve for x:
2x + 8 = 22
Answer:
x=7
Step-by-step explanation:
Step 1: Subtract 8 from both sides.
2x+8−8=22−8
2x=14
Step 2: Divide both sides by 2.
2x/2=14/2
x=7
Answer:
[tex]x[/tex] = 7
1. 2[tex]x[/tex] + 8 - 8 = 22 - 8
2[tex]x[/tex] = 14
2. [tex]\frac{2x}{2}[/tex] = [tex]\frac{14}{2}[/tex]
[tex]x[/tex] = 7
y + 7 = y -3 how many solutions
true or false ?
- a line always contains a ray
- a line segment always contains a line
- a line segment always contains a ray
- a ray always contains a line
Answer:
-True
-False
-False
-False
7
If your bank offers 6 percent annual simple interest, and
you start with $60 in your account, how much will you have
after one year?
А
$70.00
B$66.30
C
$63.60
D $66.00
Answer:
in one year you will have total $63.60
Answer:
c. 63.60
Step-by-step explanation:
60(7%)=3.60=63.60
pls help me. this is inverse trigonometric function
I'll do the first problem to get you started.
In place of [tex]\sin^{-1}[/tex] I'll use arcsine
So [tex]\sin^{-1}(x) = \arcsin(x)[/tex]
-------------------------------------------------
Using that hint given, we can get the following
cos(arcsin(3x) - pi)
cos(arcsin(3x))*cos(pi) + sin(arcsin(3x))*sin(pi)
cos(arcsin(3x))*(-1) + sin(arcsin(3x))*(0)
-cos(arcsin(3x)) + 0
-cos(arcsin(3x))
Now the question is how to evaluate the cosine of an inverse trig function, especially when it's not inverse cosine.
The trick (often with many trig and geometry problems) is to draw out a triangle. Specifically we'll need a right triangle.
Check out the diagram below. I've drawn out a right triangle with reference angle theta, opposite leg of length 3x, and hypotenuse 1.
Note how sin(theta) = opposite/hypotenuse = 3x/1 = 3x
We can then go from sin(theta) = 3x to theta = arcsin(3x)
This ultimately means
cos(arcsin(3x)) = cos(theta)
cos(arcsin(3x)) = adjacent/hypotenuse
cos(arcsin(3x)) = sqrt(1-9x^2)/1
cos(arcsin(3x)) = sqrt(1-9x^2)
The sqrt(1-9x^2) is the result of using the pythagorean theorem.
---------------------------
So that means the final answer is [tex]-\sqrt{1-9x^2}[/tex]
A bookstore had 90 copies of a magazine. Yesterday, it sold 1/6 of them. Today, it sold 1/5 of what remained. How many copies does the bookstore have left
Answer:
60 copies
Step-by-step explanation:
first you take 1/6th of the original 90 copies which is 15 and subtract that from the 90, you are left with 75 copies which is how many they had left at the end of yesterday. then you take 1/5th of the 75 copies that are left which is also 15 and you subtract that from 75 and you get 60. that's why at the end of today there are 60 copies left.
For the function f(x)= ab^x, what are the possible values for b if the function is an exponential decay function? (There are two)
a) 2^-1
b) 2-0.9999
c) square root of e
d) square root of 0.9
e) 1.5
Answer:
c
Step-by-step explanation:
Can y’all help me please...ASAP
Evaluate for a=3 and b= -5 if it is a/3b
Answer:
Step-by-step explanation:
3/3 times -5 which is 3/-15 which is -0.2
Answer:
-1/5
Step-by-step explanation:
a/3b
substitute the values of 3 where a is and -5 where b is
=3/(3*-5)
=3 / -15
= -1/5
1. A taxi cab costs $4.50 for the first mile and $0.75 for each additional mile. Write & solve an equation that could be solved to find how many miles you can travel in a taxi for $30, given that m is the number of additional miles?
Equation:______________________
______________________________
______________________________
Solution:_______________________
Answer: 0.75 divided by 30
Step-by-step explanation:you would divide 0.75 by 30. and you would get 40. there for if you gave the man $30 you would be able to ride 40 miles.
What is the equation in standard that passes through the point (5,6) and has a slope of 3?
Answer: y=3x-9
Step-by-step explanation: To solve this, you'd first have to substitute 5,6 into an equation (you know that slope in standard form is y=mx+b, where m is slope and b is figure 0, or the y intercept), you have an x and a y. Then solve.
y=mx+b (y=6, m=3, and x=5)
6=3(5)+b --- Substitute values
6=15+b --- Subtract 15 from both sides (solving for b)
6-15=-9
b=-9
Hope this helps; let me know if you need further elaboration, as this is kind of hard to grasp at first.
Sincerely,
Lacia :)
Explain how you know these two figures are similar
Choose all the expressions that are equal to 4.19 + 6.53.
A. 4.2 + 6.5
B. 16.75 – 6.03
C. 1.72 + 9
D. 15 – 4.38
E. 6.53 + 4.19
Answer:
16.75-6.03
1.72+9
6.53+4.19
Step-by-step explanation:
4.19 + 6.53 = 10.72
The expressions that is equal to 10.72 can be calculated as follows
4.2 +6.5 = 10.7
16.75-6.03 = 10.72
1.72 + 9= 10.72
15-4.38= 10.62
6.53 + 4.19= 10.72
Hence the expressions which is equal to 10.72 are
16.75-6.03 , 1.72+9 , 6.53+4.19
Part A
A scientist needs 10 liters of a 20% acid solution for an experiment, but she has only a 5% solution and a 40% solution. To the nearest tenth of
a liter, about how many liters of the 5% and the 40% solutions should she mix to get the solution she needs?
Choose the equation to match the situation
O A. (0.20) (10) = 0.05x + 0.40x
B. (0.20)(10) = 0.05x +0.40(10 – X)
OC. (0.20) (10) = 0.05(10) + 0.40(10 - x)
O D. (0.20)(10) = 0.05(10 - x) + 0.40(10 - x)
Part B
Solution
liters of 5% and
liters of 40%
Answer:
Part A Option BPart B 5.71 l and 4.29 lStep-by-step explanation:
Part ALet x be the volume of 5% solution
Then the volume of 40% solution is
10 - xAmount of acid is 10*0.20 for resultant solution, x*0.05 for 5% solution and (10- x)*0.40 is for 40% solution:
10*0.20 = x*0.05 + (10 - x)*0.40Correct equation is B.
Part BSolving
2 = 0.05x + 4 - 0.4x0.35x = 2x = 2/0.35x = 5.71 l of 5% solutionand
10 - x = 10 - 5.71 = 4.29 l of 40% solutionHow do I find the missing side
Answer:
x = 11.8639
Step-by-step explanation:
cos∅ = adjacent / hypotenuse
Since we are dealing with right triangles, we can use trig to help solve for missing values:
cos22° = 11/x
xcos22° = 11
x = 11/cos22°
x = 11.8639
Dale runs 3 miles in 28 minutes. At the same rate, how many miles would he run in 42 minutes?
Answer:
He would run 4.5 miles in 42 minutes if the rate is the same!
Step-by-step explanation:
Need help ASAP look at pictures for information
Answer:
Hope this solution helps you
Classify the four angles of the quadrilateral.
Answer:
<A= right
<B= acute
<C= obtuse
<D= acute
Step-by-step explanation:
Please only answer if you actually know how to). Some methods for graphing equations work well with certain equations and some don't. Help Asap). Knowing which method to select based on the given equation is a valuable skill. You have learned three methods to graph equations. These methods are: • y = mx+ b, • find intercepts, • use a t-chart. A) Using the following 3 equations, answer the questions: 11x + y =4, x+y = -2, x - 2y = 18. 1) How can you determine which equations can be graphed more easily using x - and y -intercepts, rewriting in slope-intercept form, or using a table of values? 2) Which method works best for you personally? When does it not work as well?
Answer:
please dont blame me if i get this wrong this is what i put.
Step-by-step explanation:
Using the following 3 equations, answer the questions:
11x + y =4, x+y = -2, x - 2y = 18
How can you determine which equations can be graphed more easily using x- and y-intercepts, rewriting in slope-intercept form, or using a table of values?
you can determin which is eiser to graph by wether or not they have numbers infront of the x and y intercepts. i find it mutch eiser if they allready have the numbers there. its also eiser to graph 11x + y =4 and x - 2y =18 on a slope intercept rather than table of values because you allready can find the points for those two eiser than the last one which would be used on the table of values. for the problem x+y=-2 you would use x and y intercepts. for 11x+y=4, rewriting in slope form is the corect method to use. and finaly use the table of values method for x-2y=18.
Which method works best for you personally? When does it not work as well?
the one that i find works best for me personally is probably gonna be the slope intercept method as apposed to many other methods. it doesnt work all the time because nothing can but normaly when i have a problem with this method i can just go to the table of values method and get the answer. (sorry if this is wrong this is what im putting for my answer. dont copy and paste this though if u do desiede to use it, read it and turn it into your own words so its not obvious you found the answer on the internet. and tbh i didnt read the lesson i just am ok at comming up with answers useing the question and getting away with it. )
Miss kito made a large donation to protect a rare species of mosquito that environmentalist declared endangered, thanks o miss kito's generosity, the insects were transplanted to a protected area. the population P (in thousands) of the insects in t months after being transported is: p(t)=50(1+0.05t)/2+0.01t...what is the limiting factor on the insect population as time progresses?
Answer:
Step-by-step explanation:
Given the population of insects in t months after being transported to be p(t)=50(1+0.05t)/2+0.01t., to get the insect population as time progresses, we will substitute t = infinity into the equation
p(infty) = 50(1+0.05(infty))/2+0.01(infty)
P(infty) = 50(1+infty)/infty
P(infty) = infty/infty (Ind)
Apply l'hopital rule
P'(t) = 50(0.05)+0/0.01
P'(t) = 2.5/0.01
P'(t) = 250
Hence the limiting factor on the insect population as time progresses is 250 populations
The factors that affect the population of the rare species of the mosquito are what are referred to as the limiting factors.
There are several limiting factors that affect population growth of the mosquitoes; some of them are:
FoodWaterSpaceCompetition with other mosquitoesAs time progresses, the amount of mosquitoes may or may not increase.
If the population size of the mosquito increases, then the limiting factors are favorable.If otherwise, the population size decreases or remains constant with time, then the limiting factors are not favorable.This in other words means that, a limiting factor is anything that slows down or stops the population size of the mosquitoes
Read more about limiting factors at:
https://brainly.com/question/23358549
Simplify the expression 4+2(6+1)+5(5-2)
Answer:
33
Step-by-step explanation:
Use PEMDAS, so the first thing you solve is what's in the parenthesis.
(6 + 1) = 7
(5 -2) = 3
So now your equation looks like 4 + 2 x 7 + 5 x 3
Now multiply the numbers needed
2 x 7 = 14
5 x 3 = 15
So now it looks like 4 + 14 + 15
Simplify
4 + 14 = 18 + 15 = 33
Answer:
33
Step-by-step explanation:
This is the answer because:
You can use PEMDAS or GEMS
PEMDAS: Parenthesis, Exponents, Multiplication, Division, Addition, Subtraction
GEMS: Grouping (Parenthesis), Exponents, Multiplication and Division (whichever one comes first from left to right.), Addition and Subtraction (whichever one comes first from left to right.)
1) First, we have to do grouping (parenthesis)
(6+1) = 7
(5 - 2) = 3
New equation: 4 + 2 x 7 + 5 x 3
2) Next, we have to do multiplication
7 x 2 = 14
5 x 3 = 15
New equation: 4 + 14 + 15
3) Finally, add everything up.
4 + 14 + 15 = 33
Hope this helps! :D
the number 43.95 is 1/10 of what number?
Answer:
Step-by-step explanation:
1/10 is literally 1 tenth of something. so 10% of x = 43.95 so 100% of x = 43.95 * 10 so x = 439.5
