Answer:
2(x^2+1-2x)+1=
2x2+2-4x+1=
2x2-4x+3
Step-by-step explanation:
eight children share two pies equally. how many pies will each child get?
Answer:
Each child will get 1/4 of a pie
Step-by-step explanation:
7.86÷0.2
I need you to answer with step by step explaination
Jonas has 20 coins, all nickels and dimes. The total value is $1.25. If n represents the number of nickels, which algebraic equation represents this situation?
A. 20n = 125
B. 5n = 1.25
C. 5n + 10(20 - n) = 125
D. 5n + 10n - 20 = 125
Answer:
a
Step-by-step explanation:
1m-23=1+4m Please help
Answer:
m= -8
Step-by-step explanation:
Answer:
m=-8
Step-by-step explanation:
Hope this helps :)
what if f(0)?
12 only
2 and 3 only
-2,-1,1 and 2 only
-2,-1,1,2 and 12
Answer:
12 only
Step-by-step explanation:
I did the test
HELLLLLLLLPPPPPPPPPPPP!!!!!!
Answer:
3 bars of soap and 2 toothbrushes.
Step-by-step explanation:
What is the value of the 7in the following number? 2,104.47
Answer:
7 hundredth is the value of 7 in the question
A basketball player scored 30 times during one game. she scored total of 50 points, two for each two point shot and one for each free throw. How many two point shots did she make? How many free throws
Answer:
it is 20
Step-by-step explanation:
Answer:
20
Step-by-step explanation:
True or False: The Sine Function, y=sin(2), has a Horizontal Asymptote.
True
O False
Answer:
true
Step-by-step explanation:
The length of a rectangle is three times its width. if the perimeter of the rectangle is 48 yd, find its area.
Answer:
all the sides multiplies should equal 48
Step-by-step explanation:
sorry I don't know
The rectangle will have a 432 yd² area.
What is Area?The area is the entire amount of space occupied by a flat (2-D) surface or an object's form. On a sheet of paper, draw a square using a pencil. It has two dimensions. The area of a form on paper is the area that it occupies.
Given, The length of a rectangle is three times its width. if the perimeter of the rectangle is 48 yd
Let "l " be the length of the rectangle
thus, the width of the rectangle = l/3
Since the Perimeter of the rectangle = 48 yd
From the general formula of the Perimeter of the rectangle:
perimeter = 2*(length + width)
In our case
Perimeter = 2*( l + l/3)
Perimeter = 2*(2l/3)
Perimeter = 4L/3
Thus,
4L/3 = 48
L = 36 yd
So width = 36 /3 = 12
Since the area of the rectangle = length * width
Area = 12 * 36
Area = 432
therefore, the area of the rectangle will be 432 yd².
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Quick I need help.....
Answer:
C
Step-by-step explanation:
Subtract both sides by 2
2-2 is 0
-10 - 2 is 12
-3x < 12
Divide both sides by -3
Switch signs cause dividing a negative
x > -4
A large automobile insurance company selected samples of single and married male policyholders and recorded the number who made an insurance claim over the preceding three-year period.
Single Policyholders Married Policyholders
n1 = 900 n2 = 400
Number making claims = 135 Number making claims = 24
Required:
a. Use a level of significance α = 0.05. Test to determine whether the claim rates differ between single and married male policyholders. Explain your determination.
b. Provide a 95% confidence interval for the difference between the proportions for the two populations.
Answer:
Step-by-step explanation:
Given the following :
Single policy holders (n1) = 900
Number making claims (x1) = 135
Married Policy holders (n2) = 400
Number making claims (x2) = 24
α = 0.05
a. Use a level of significance α = 0.05. Test to determine whether the claim rates differ between single and married male policyholders. Explain your determination.
Null: p1 - p2 = 0
Alternative : p1 - p2 ≠ 0
p = (n1p1 + n2p2) / n1 + n2 ;
p1 = x1/n1 = 135 / 900 = 0.15
p2 = x2/n2 = 24 / 400 = 0.06
p = (900*0.15 + 400*0.06) / (900 + 400)
p = 0.1223076
Test statistic (z):
(p1 - p2) / √p(1-p)(1/n1 + 1/n2)
(0.15 - 0.06) / √0.12231(1-0.12231)(1/900 + 1/400)
= 4.5710979
Decision:
Reject Null if P < α
Obtaining p value from z score using calculator :
P value = 0.0001
0.0001 < 0.05
Hence,
Reject Null
decrease of 65% is the same as multiplying by what
percent?
Answer:
35%
Step-by-step explanation:
A decrease of 65% would be the same as multiplying the value by 35%.
100% - 65% = 35%
Let's use an example.
You have $150 dollars in stock and it decreases by 65%
150 - (.65*150) =
150 - 97.5 = $52.50
Now let's just multiply $150 by .35 (which is 35%)
150 * .35 = $52.50
It's the same!
select the correct answer from each drop-down menu.
The decibel level of a normal conversation, which has an intensity of 3.2x10-6 watts/m2, is (ANSWER1) dB. If the decibel level goes up to
80, the intensity of the sound will be
(ANSWER2) watts/m2
B = 10103(t.), where is the sound level in decibels, is the intensity of sound you are measuring, and I is the
Use the formula
smallest sound intensity that can be heard by the human ear (roughly equal to 1x10-12 watts/m2).
Answer:
The intensity of sound in decibel is 65 dB
The intensity of sound in Watts/m² is 1 x 10⁻⁴ W/m²
Step-by-step explanation:
The intensity of sound in decibel is given by;
[tex]\beta (dB) = 10Log(\frac{I}{I_o})\\\\[/tex]
where;
I₀ is the smallest sound intensity that can be heard by the human ear = 1 x 10⁻¹² watts/m²
[tex]\beta (dB) = 10Log(\frac{I}{I_o})\\\\\beta (dB) = 10Log(\frac{3.2*10^{-6}}{1*10^{-12}})\\\\\beta (dB) = 65.05 \ dB[/tex]
= 65 dB
If the decibel level goes up to 80 dB, the intensity in W/m² is given by;
[tex]\beta (dB) = 10Log(\frac{I}{I_o} )\\\\80 = 10Log(\frac{I}{I_o} )\\\\8 =Log (\frac{I}{I_o} )\\\\10^8 = \frac{I}{I_o} \\\\I = I_o *10^8\\\\I = 1*10^{-12}*10^8\\\\I = 1*10^{-4} \ W/m^2[/tex]
1. Lori drove 141 miles in 3 hours. What was Lori’s average rate of speed?
Answer:
47 miles per hour
Step-by-step explanation:
The average rate of speed is the miles divided by the hours
141 miles / 3 hours
47 miles per hour
Answer:
47
Step-by-step explanation:
141 / 3
A case of tomato cans weighs 563 dekagrams. A case of soup cans weighs 458 dekagrams. How much do the two cases weigh together in decigrams? Use the metric table to help answer the question.
Metric Table
kilo- 1,000 hecto- 100 deka- 10 unit 1 deci- 0.1 centi- 0.01 milli- 0.001
o 1,021 decigrams
o 10,210 decigrams
o 102,100 decigrams
0 1,021,000 decigrams
Hurry please i need help.
Answer:
102,100 decigrams
Step-by-step explanation:
(564 dag + 458 dag) = 1021 dag
1021 dag × 100 dg/dag = 102100 dg
The two cases together weigh 102,100 decigrams.
_____
1 dag = 10 g
1 dg = 0.1 g
Answer:
102,100 decigrams.
Step-by-step explanation:
An ordered pair is written as:
(domain, range)
(range, domain)
Answer:
the answer is (domain, range) or (x,y)
An ordered pair is written as, (domain, range). So Option A is correct
What is Domain and Range ?The domain of a function is the set of all input values (independent variable) for which the function is defined and produces a valid output (dependent variable).
The range of a function is the set of all possible output values of the function. It represents the set of all possible values of the dependent variable.
The set of all "x" values constitutes the domain, and the set of all "y" values constitutes the range, in a set of ordered pairs.
You should keep in mind that ordered pairs are represented by the following symbols: (x, y).
Find the domain when examining a collection of ordered pairs by compiling a list of all the relation's x values.
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Jack and Jillian sell apples at a produce stand. Jillian earns $2 for each bag of apples she sells. At the end of the week, Jack has earned $8 less than Jillian. The following expression shows Jack's earnings:
2x − 8
In the expression, what does the first term represent?
Answer:
2(x-4)
Step-by-step explanation:
it's the only thing i could think of, or its one
Answer:
Jillian's earnings at the end of the week
rounded to the nearest thousandth, the number 0.0000741
Answer:
.000
Step-by-step explanation:
Ada had $42 to spend on a binder and 11 spiral notebooks. The binder cost $9 what was the price of each spiral notebook?
The length of a rectangle is 2 less than two times the width. Perimeter is 42. Find the length and the width.
Answer:
Hi there
Your answer is
width= 5.75
length= 9.5
Step-by-step explanation:
L=2w-2
P=42
Perimeter formula
L+L+W+W=P
(2w-2)+(2w-2)+w+w=42
8w-4=42
+4
8w=46
/8
w= 5.75
Plug in width in length formula!
L=2w-2
L=2(5.75)-2
L=9.5
Answer all ten questions for tons of points. Please don’t take forever
Answer:
Hey looks like you did'nt post the question
msg me below and ill try to help you
Nine friends vote on their favorite fruit. Only one person in the group votes for kiwi.
Choose the decimal that is equivalent to this fraction.
A. 0.1
B. 0.11
C. 0.111111…
D. 0.212121…
Answer:
i think it would be A
Step-by-step explanation:
Ummm this is prolly the last time tehe
Answer:
1. 25% increase
2. 90% decrease well you get 8.4 but that's the closest
3. 71% increase
4. 20% decrease
5. 75% decrease
6. 150% increase
Step-by-step explanation:
Two dice are tossed. The probability that the total score is a prime number is:
Step-by-step explanation:
50/50 it's random I think but I learned that in science
The average price of a movie ticket in the United States from 1980 to 2000 can be modeled by the expression 2.75+0.10x, where x is the number of years since 1980.
Which part of the expression corresponds to the cost of movie tickets in 1980?
Answer:
2.75
Step-by-step explanation:
0.10 represents the rate at which prices have increased since 1980..
2.75 represents the price in 1980
This can be confirmed by inputting 0 as the value of x.
2.75+0.10(0) = 2.75
Helllllllllllllp meeeeeeee I’m an idiotttttt
Answer:
3(4 + 3x)
distribute the 3 into both numbers
3*4
3*3x
9x +12
Step-by-step explanation:
What is 837 divided by 36?
Answer:
23.25 you will just divide it
Step-by-step explanation:
A bag has 5 yellow marbles, 3 red marbles and 2 blue marbles. Quinn randomly picks a marble from the bag and returns it before another is picked. How many times would Quinn expect to pick a blue marble if he picks a marble 200 times?
Answer:
Quinn can expect to pick blue 40 times
Step-by-step explanation:
the probability of picking blue is stated as 2/10 which can be reduced to 1/5
multiply the number of times they pick a marble ( shown as 200) by the probability of picking a blue one ( 1/5)
200 x 1/5 = 200 / 5 = 40
Quinn can expect to pick blue 40 times
Answer:40 blue marbles
Step-by-step explanation:
First find the probability of a blue marble
P (blue) = number of blue marbles / total marbles
= 2 blue/ ( 5+3+2) total
= 2/10
=1/5
We can use this since we return the marble to the bag each time
We multiply this by 200 for the number of times it is picked
200 * 1/5 = 40
We should expect to pick 40 blue marbles
how to graph a line with slope 2 passing through the point (2, -1)