Answer:
Step-by-step explanation:
Next time please include the answer choices.
128x^5*y^8 is equivalent to (2^7)*x^5*y^8
Find the measure of b. PLEASE HELP
please help
$9: 4 visitors - $18 : 8 visitors proportion or non proportion
Answer:
That would be proportionate
Step-by-step explanation:
Just compare the two ratios
9/4
18/8
they are the same if you find the lcm of both
18/8
18/8
3/5x+2+20 What is the answer
On a test, Alice had 80% of the problems right. If she had
20 problems correct, how many questions were on the test?
Show work please
Answer: she would get 100%
Step-by-step explanation: every correct question u get 5 points so 20 * 5 = 100
Answer:
25
Step-by-step explanation:
80% = 0.80
0.80x = 20
0.80x/0.80 = 20/0.80
x = 25
So there was 25 questions on the test
Situation:
A 33 gram sample of a substance that's
used to detect explosives has a k-value
of 0.1473.
N = Noe
-kt
No = initial mass (at time t = 0)
N = mass at time t
k = a positive constant that depends on
the substance itself and on the units
used to measure time
t = time, in days
Find the substances half life, and days. Round your answer to the nearest 10th
Answer:
Half life = 4.7 days
Step-by-step explanation:
Formula to get the final amount of the substance after the time 't',
[tex]N_t=N_0e^{-kt}[/tex]
Here, [tex]N_t[/tex] = Final amount of the substance
[tex]N_0[/tex] = Initial amount
k = decay constant
t = Duration or time
Now by substituting the values in the formula,
[tex]N_t=N_0e^{-0.1473t}[/tex]
If [tex]N_t=\frac{1}{2}(N_0)[/tex] [For half life]
[tex]\frac{1}{2}(N_0)=N_0e^{-0.1473t}[/tex]
[tex]\frac{1}{2}=e^{-0.1473t}[/tex]
[tex]2=e^{0.1473t}[/tex]
ln(2) = [tex]\text{ln}(e^{0.1473t})[/tex]
0.69315 = 0.1473t
t = 4.71 days
t ≈ 4.7 days
Therefore, half life of the substance is 4.7 days.
Answer:
4.7
Step-by-step explanation:
**Help Fast Please!!**
Solve by completing the Square or Using the Quadratic Formula.
X^2+7x+3=0
Show all work (All steps for solving and simplifying) for credit.
Answer:
looooooooooooooollll
Step-by-step explanation:
The ratio of three numbers is 4 : 5 : 3. The sum of the numbers is 54. List the numbers in ratio form.
Answer:
13.5 : 18 : 22.5.
Step-by-step explanation:
let the numbers be 3x , 4x and 5x
3x+ 4x + 5x = 54
12x = 54
x = 4.5
so the numbers are 3*4.5, 4 * 4.5 and 5 * 4.5
= 13.5, 18 and 22.5.
The list of the numbers in ratio form is 18 : 22.5 : 13.5
Given the ratio of three numbers as 4 : 5 : 3
Total ratio = 4 + 5 + 3
Total ratio = 12
If the sum of the numbers is 54.
For the ratio of 4:
= 4/12 * 54
= 1/3 * 54
= 18
For the ratio of 5:
= 5/12 * 54
= 270/12
= 22.5
For the ratio of 3:
= 3/12 * 54
= 1/4 * 54
= 13.5
Hence the list of the numbers in ratio form is 18 : 22.5 : 13.5
Learn more here: https://brainly.com/question/19793310
HELP PLEASE whats the answer giving brainliest math btw lol
Answer:
The person above or below is correct.
Step-by-step explanation:
Can I have Brainliest?
Let P = {4, 5, 6, 7, 8), Q = {5, 6, 7), and R = {1, 2}, Find PUQ. 0 A. {1, 2, 4, 5, 6, 7, 8} o B. {5, 6, 7} c. [4, 5, 6, 7, 8} 0 D. ©
Answer:
This isn't an equation right?
Step-by-step explanation:um ...
Answer: C: {4,5,6,7,8}
Step-by-step explanation:
Mrs. Milavec had to take out a loan, to pay for Oreos. She borrowed $2,000 at 8% for 2 years. What is the interest Mrs. Milavec will have to pay?
Answer:
$320.00
Step-by-step explanation:
what is 4+n/3=2
the slash is a fraction
Answer:
n = -6
Step-by-step explanation:
4 + [tex]\frac{n}{3}[/tex] = 2
[tex]\frac{n}{3}[/tex] = -2
n = -6
Answer:
n = -6
Step-by-step explanation:
4 + n/3 = 2
subtract 4 from both sides
n/3 = 2 -4
n/3 = -2
multiply both sides by 3
n = 3(-2)
n = -6
5. An airline ticket to Florida from a certain city costs $249. How much money does
the airline collect if 85 tickets are sold?
Answer: $21165
Step-by-step explanation:
249 x 85 = 21165
Owen and his children went into a restaurant where they sell hotdogs for $4 each and tacos for $2.50 each. Owen has $60 to spend and must buy a minimum of 18 hotdogs and tacos altogether. If xx represents the number of hotdogs purchased and yy represents the number of tacos purchased, write and solve a system of inequalities graphically and determine one possible solution.
Anser:
5 hotdogs and 16 tacos
Step-by-step explanation:
5 x 4 = $20
2.50 x 16 = $40
20 + 40 = $60
Blanca creates decorative wall hangings. She wants to look at the relationship between the diagonal length of the hangings and their weight. The data show a linear pattern with the summary statistics shown below: standard deviation = diagonal length (inches) 7 = 24.1 = 12 y = weight (pounds) y = 12.9 S = 16.2 0.0 Find the equation of the least-squares regression line for predicting the weight of the wall hanging from its diagonal length. Round your entries to the nearest hundredth
Answer: y=-16.38+1.22x
Step-by-step explanation:
Answer:y=-16.38+1.22x
Step-by-step explanation:
HELP ASAP!
38 points if you answer pls
Answer:
b
Step-by-step explanation:
What is the y intercept of a line that has a slope of-3 and passes through point (-5,4)
-17
-11
7
19
Help me plz I need lots of help
Answer:
18x + 16
Step-by-step explanation:
(Not simplest form) 9x + 9x + 8 + 8
To get simplest form, just add the terms and integers together, which in this case would give you 18x + 16.
The domain for f(x) and g(x) is the set of all real numbers.
Let f(x) = 3x + 5 and g(x) = x2.
Find f(x) + g(x).
Answer:
f(x) + g(x) = x^2 + 3x + 5
Step-by-step explanation:
In order to do this, you need to substitute f(x) for 3x +5 and substitute g(x) for x2 (which I'm assuming is x squared, which I will be wrIting as x^2. If this is not the problem, please correct me)
f(x) + g(x) = 3x + 5 + x^2
Now, you need to put the varibles in decreasing order of exponents.
f(x) + g(x) = x^2 + 3x + 5
Answer:
Step-by-step explanation:
The domain of a function is the set of all possible inputs for the function. For example, the domain of f(x)=x² is all real numbers, and the domain of g(x)=1/x is all real numbers except for x=0. We can also define special functions whose domains are more limited.
A recipe says, "1 part cocoa to 4 parts sugar." How much sugar will you need if you use 20 grams of cocoa?
Answer:
80
Step-by-step explanation:
1 part of cocoa to 4 parts of sugar means every one part of cocoa is timed by four parts sugar so 20 times four is 80.
Find the unit rate for number of parts manufactured per hour if 1620 parts are made in 6 hours.
Answer:
270 parts per hour
Step-by-step explanation:
given
we are told that 1620 parts are manufactured in 6 hours.
Required
Unit rate.
The unit rate in this context is defined as the number of parts that can be manufactured in one hour
Step two:
To find the unit rate, we have to divide the total parts manufactured by the total time taken
unit rate= 1620/6
unit rate= 270 parts per hour
Three students have started a fence-painting business. Working together, Pragnesh and Qazi can paint the fence in 2 hours. Similarly, Pragnesh and Ronghui can paint the fence in 3 hours when they work together. Finally, when Qazi and Ronghui work together, they can paint the fence in 4 hours. How long would it take if all three students worked together to paint the fence
Answer: 55.4 mins
Step-by-step explanation:
pragnesh and qazi = 2hrs
pragnesh and roghui = 3hrs
qazi and roghui = 4hrs
this means for every 1 hour they wold paint.
pragnesh and qazi = [tex]\frac{1}{2}[/tex] half of the fence
pragnesh and roghui = [tex]\frac{1}{3}[/tex]
qazi and roghui = [tex]\frac{1}{4}[/tex] quarter of the fence
time taken when they all work together
= [tex]\frac{1}{2}[/tex] + [tex]\frac{1}{3}[/tex] + [tex]\frac{1}{4}[/tex]
= [tex]\frac{13}{12}[/tex]
= [tex]\frac{12}{13}[/tex]
= 0.9231 × 60(mins)
= 55.4 mins
Which of the following sets of data does NOT represent a function?
a. Set A
b. Set B
c. Set C
d. Set D
Answer:
D
Step-by-step explanation:
Set D is not a functions. Functions are defined as each x having only 1 y value associated with it. 2 in the x column has two values associated with it: 1 and 2
D is not a function.
matematica ayuda xfis
Answer:
خ
Step-by-step explanation:
Pls helppppppppoppppppp
Answer:
H. 3[tex]\frac{3}{4}[/tex]feet
Step-by-step explanation:
Length of scale drawing = [tex]\frac{3}{12}[/tex] × 15feet
= 3[tex]\frac{3}{4}[/tex]feet
At the garden shop, each small tree costs $125 and each large tree costs $275.
How much will 3 small trees and 1 large tree cost?
My homework says, "Does the graph represent a proportional relationship? Why or why not? You MUST explain to get credit."
Answer:
No, the graph does not represent a proportional relationship. It is a straight line, but it does not intersect the point (0, 0). ... It's not proportional because the line does not cross through the origin. Therefore the ratio of x to y will be different for two different points on the line.
luis wrote a story the number of pages in his story has 17 tens and 9 ones he wrote the number 791 to show the number of pages it luis correct if so explain why?
Answer:
no he is not
Step-by-step explanation:
17 tens + 9 ones
17(10) + 9(1)
170 + 9
179
he wrote 791 but the correct answer should be 179
Express 8 as a fraction.
Answer:
8/1
Step-by-step explanation:
You just have to put a one for the denominator for any whole number you want to make a fraction.
Please mark me as brainliest.
Find the slope of each line using tables . try using the slope formula
Answer:
Step-by-step explanation:
(-3, 4) (-1, 9)
(9-4)/(-1+3) = 5/2