Answer:
this might be wrong but i believe its 23
2. A bookshelf costs $300 normally. Today it is on sale for 20% off. Which expression or expressions could you use to find the sale price? Circle all correct answers.
a.300 + 0.2(300)
b.300 - 0.2(300)
c.0.2(300)
d.300(0.8)
Answer/Step-by-step explanation:
$300 is the normal price the sale is 20% off
You would need to multiply them together because it then gives you how much it is off.
Then then you would subtract it.
That takes D and C off.
A , is adding and we arnt adding we are subtracting.
Therefore you answer is: B
Please can I have some help thank you :)
9514 1404 393
Answer:
£592 for 16 boxes
Step-by-step explanation:
The classroom floor area is ...
A = LW = (8.8 m)(2.2 m) = 19.36 m²
The cupboard floor area is ...
A = (2.3 m)(2.1 m) = 4.83 m²
Then the total area to be covered is ...
19.36 m² +4.83 m² = 24.19 m²
At 1.6 m² per box, the number of boxes required is ...
(24.19 m²)/(1.6 m²/box) = 15.12 boxes
If we assume we can only purchase whole boxes, we need to purchase 16 boxes to cover the floor. The cost will be ...
(16 boxes)(£37/box) = £592 . . . . cost of laminate to replace the floor
The product of nine and n
Answer:
9n?
Step-by-step explanation:
i think its 9n its been a while ok
Answer:
9 x n
Step-by-step explanation:
The ¨product¨ is the answer to a multiplication problem, so that requires you to multiply 9 and n.
Solve. Show each step.
5.4 - 6x = -6
Answer:
x = 1.9
Step-by-step explanation:
5.4 - 6x = -6
Gotta isolate the x, so you would minus 5.4 from both sides:
5.4 - 5.4 - 6x = (-6) - 5.4
5.4 - 5.4 cancels out, and (-6) - 5.4 is -11.4 What's left is:
- 6x = -11.4
Gotta isolate the x, so divide -6 to both sides. It negative because the sign in front of it is a subtraction sign, it would be positive if there is a addition sign:
- 6x/(-6) = (-11.4)/(-6)
-6 divide by -6 cancels out, and -11.4 divided by -6 is 1.9. A negative divided by a negative is a positive. Result, x is now isolated:
x = 1.9
Simplify
15/25
1- 3/5
2-1/5
3-1/3
4/2/5
Answer:
A 3/5- is your answer that would be best.
What is 11 7/20 in decimal form?
Answer:
the answer is 11.25
Step-by-step explanation:
Convert the proper fraction to decimal: Divide the numerator by the denominator
7 ÷ 20 = 0.35
Add this decimal number to the whole number of the mixed fraction
11 + 0.35 = 11.35
Can someone help me picture inserted
Answer:
~77°
Step-by-step explanation:
cosQ = 9/40
inverse cosine(9/40) ≈ 77° = Q
(5x^{2}+3x-1)-(3x^{2}-4x-6)
find the difference PLEASE HURRY IM TIMED
Answer:
=2x2+7x+5
Step-by-step explanation:
Answer:
2x^2 + 7 x + 5
Step-by-step explanation:
I can't waste time giving an explanation if you're timed ;) if this helped you, leave a brainliest! :)
Find the sum:
5
3 +2
6
Help pls
3 + 2 + 5/6
= 5 + 5/6
= 5 + 0.83 (convert 5/6 to decimal form)
= 5.83
Solve the system
2x+3y=9
-2x - 9y + -15
sorry if this does not make sense pls help me
Answer:
i would probably try looking it up and really srr i can't help much
bajar dos numeros de las que aparecen en la primera seccion, segundo: el resultado irá con el segundo dijito de la ( y) y despues dividirlo entre el numero que dio al multipliar esos dijitos
please help me i really need help please
Answer:
8 ft
Step-by-step explanation:
i forgot what law it was called srry
Solve for z.
z^3 - 8=0
Write your answers in simplified, rationalized form.
it needs to have an i, square roots i don’t know how to answer it someone please help me
[tex]\huge\text{Hey there!}[/tex]
[tex]\mathsf{z^3 - 8 = 0}\\\text{ADD 8 to BOTH SIDES}\\\mathsf{z^3 - 8 + 8 = 0 + 8}\\\text{Cancel\ out: -8 + 8 because that gives you 0}\\\text{Keep: 0 + 8 because it gives 8 and we need that to solve for your z value}\\\mathsf{z^3=8}\\\text{TAKE the CUBE ROOT}\\\mathsf{z = 8{^(\dfrac{1}{3})}}\\\\\text{SIMPLIFY the EQUATION above and you have your z value}\uparrow\\\\\boxed{\boxed{\large\text{Answer: \bf z = 2}}}\huge\checkmark[/tex]
[tex]\textsf{Good luck on your assignment and enjoy your day!}[/tex]
~[tex]\frak{Amphitrite1040:)}[/tex]
What the distance between (3,5) and (-6,-4)
Answer:
L² =(3--6)²+5--4)
L²=9²+9²
L²=162
L=12.73
I NEED AN EXPLANATION
=7×9
=36 square feetffgxdx
Which rule describes the function whose graph is shown?
Answer: B
Step-by-step explanation:
from edge
Answer:
B
Step-by-step explanation:
Edge 2022
Fon baked a cake and ate 1/8 of it she shared the remaining cake equally to her 4 friends whag Frection of the whole cake did each of her friends received?
Answer:
Each of her friends ate 7/32 of the cake.
Step-by-step explanation:
Given that Fon baked a cake and ate 1/8 of it, and then she shared the remaining cake equally to her 4 friends, to determine what fraction of the whole cake did each of her friends received, the following calculation must be performed:
(8 - 1/8) / 4 = X
(7/8) / 4 = X
(28/32) / 4 = X
7/32 = X
Thus, each of her friends ate 7/32 of the cake.
The National Institute of Mental Health published an article stating that in any one-year period, approximately 9.5 percent of American adults suffer from depression or a depressive illness. Suppose that in a survey of 100 people in a certain town, seven of them suffered from depression or a depressive illness. If you were conducting a hypothesis test to determine if the true proportion of people in that town suffering from depression or a depressive illness is lower than the percent in the general adult American population, what would the null and alternative hypotheses be? (Note = refer to top of page 508 for format and appropriate equality and non-equality symbols, respectively)a. H0 :______b. Ha :______
Answer:
a) [tex]H_{0} = 9.5[/tex]
b) [tex]H_{a} < 9.5[/tex]
Step-by-step explanation:
The National Institute of Mental Health published an article stating that in any one-year period, approximately 9.5 percent of American adults suffer from depression or a depressive illness.
At the null hypothesis, we test if the value we find is equal to the expected value, that is:
[tex]H_{0} = 9.5[/tex]
Test to determine if the true proportion of people in that town suffering from depression or a depressive illness is lower than the percent in the general adult American population
Lower, which means that the alternate hypothesis, we test if the value we find is lower than the expected value, that is:
[tex]H_{a} < 9.5[/tex]
A rectangular prism has dimensions of 4 cm by 3 cm by 2 cm.
Area_{rectangle}=b. h
PART A
What is the surface area?
Answer:
48
Step-by-step explanation: surface area = 2 (lw + hl + hw)
2 ( 2 x2 + 5x2 + 5x2)
2 (4+10+10)
2(24)
48 cm
Step-by-step explanation:
Answer:
WHAT THE OTHER PERSON SAID
Step-by-step explanation:
What value of s in the equation S/6=18?
A.108
B.24
C.12
D.3
Answer:
108
Step-by-step explanation:
s=18x6
s=108
How’s ure day going?
Great
Good
Descent
Bad
TRASH
Answer:Good, could be better. You?
Step-by-step explanation:
which fraction is equivalent to 3
1/3
2/1
3/3
5/2
6/2
1/3 hope this help you
Step-by-step explanation:
can i get a heart
please help this is due in 5 minutes
Answer:
23 inches
Step-by-step explanation:
The rent for a one-bedroom apartment in Southern California follows the normal distribution with a mean of $2,350 per month and a standard deviation of $260 per month. The distribution of the monthly costs does not follow the normal distribution. In fact, it is positively skewed. What is the probability of selecting a sample of 65 one-bedroom apartments and finding the mean to be at least $2,260 per month
Answer:
0.9974 = 99.74% probability of selecting a sample of 65 one-bedroom apartments and finding the mean to be at least $2,260 per month.
Step-by-step explanation:
To solve this question, we need to understand the normal probability distribution and the central limit theorem.
Normal Probability Distribution:
Problems of normal distributions can be solved using the z-score formula.
In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the zscore of a measure X is given by:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.
Central Limit Theorem
The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean [tex]\mu[/tex] and standard deviation [tex]s = \frac{\sigma}{\sqrt{n}}[/tex].
For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.
The rent for a one-bedroom apartment in Southern California follows the normal distribution with a mean of $2,350 per month and a standard deviation of $260 per month.
This means that [tex]\mu = 2350, \sigma = 260[/tex]
Sample of 65 one-bedroom apartments
65>30, which means that the sampling distribution of the sample means will be approximately normal. Also, [tex]n = 65, s = \frac{260}{\sqrt{65}} = 32.249[/tex]
What is the probability of selecting a sample of 65 one-bedroom apartments and finding the mean to be at least $2,260 per month?
This is 1 subtracted by the pvalue of Z when X = 2260.
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
By the Central Limit Theorem
[tex]Z = \frac{X - \mu}{s}[/tex]
[tex]Z = \frac{2260 - 2350}{32.249}[/tex]
[tex]Z = -2.79[/tex]
[tex]Z = -2.79[/tex] has a pvalue of 0.0026
1 - 0.0026 = 0.9974
0.9974 = 99.74% probability of selecting a sample of 65 one-bedroom apartments and finding the mean to be at least $2,260 per month.
Which graph shows a linear relationship? Select yes or no. For A B C D
Answer:
A, B, and C show linear relationships.
Step-by-step explanation:
For something to have a linear relationship, it CANNOT have an x-value with two different y-values.
To determine if something has two y-values for one x-value, pass a line (like a pencil) over the graph. If there are any places where the line crosses the graph twice, the graph you have is not linear.
Find the area of the trapezoid.
12 2 cm
10 2 cm
126 cm
[? ] cm
Enter the exact answer. Do not round.
(NOT A MULTIPLE CHOICE)
Suppose a civic engineer wants to conduct a survey to find out if residents of a city would be in favor of widening one of the city's roadways for increased traffic flow
a. Would a sample consisting of residents who utilize that roadway to travel to work each morning be representative? Explain.
b. Would a sample consisting of residents who live along that roadway be representative? Explain.
c. Would a random sample of homeowners in the city be representative? Explain.
9514 1404 393
Answer:
a, b, c --- all not representative
Step-by-step explanation:
The question posed by the engineer is "are residents of the city in favor of ...".
The only representative sample is one from a pool that includes all residents of the city—not just those who (a) use the road, (b) live along the road, or (c) own homes.
__
Additional comment
The engineer may want to refine the question. As posed, it would include children, homeless, and/or institutionalized residents of the city as well as drivers and tax-payers. In inclusive cultural traditions, "residents of the city" may also include animals, plants, water, air, and other holders of spiritual energy.
Help pls ............
x/6 - 10 =2
Show your work.
Answer:
72
Step-by-step explanation:
x/6 - 10 = 2
x/6 = 12 (add 10 to both sides)
x = 72 (multiply 6 to both sides)
What is the greatest common factor of 60x4y7, 45x5y5, and 75x3y?
Answer: I’m pretty sure the common factor is 15x3y
Answer:
Answer: I’m pretty sure the common factor is 15x3yStep-by-step explanation:
What value of x would make the following relation a function?
Answer: the answer is
C.) -2
Step-by-step explanation:
I got this answer by simply looking at the pattern. It goes -2,-3,2,3, and then starts over, So the answer would have to be -2. I hope this helped and good luck:))
The value of x that would make the relation a function is x = 3.
Option D is the correct answer.
What is a function?A function is a relationship between inputs where each input is related to exactly one output.
Example:
f(x) = 2x + 1
f(1) = 2 + 1 = 3
f(2) = 2 x 2 + 1 = 4 + 1 = 5
The outputs of the functions are 3 and 5
The inputs of the function are 1 and 2.
We have,
{ (-2, -3), (-3, -2), (2, 3), (3, 2), (x, 2) }
A function can not be one-to-many.
A function can be many-to-one and one-to-one
Now,
If x = 2, -3, -2 we get one-to-many.
But if x = 3 we get one-to-one.
Thus,
x = 3.
Learn more about functions here:
https://brainly.com/question/28533782
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