Answer:
n + 2 x 10d = 20d + n
Step-by-step explanation:
So he weighs n pounds and he carried 2 packages so n+2 ok so now we see one is 10 pounds and the other is d pounds so therefore our whole expression would be n + 2 x 10d with the solution of 20d + n.
Please mark brainliest!
Write the equation for a parabola that has x intercepts (-4.5,0) and (-2.8,0) and a y intercept (0,37.8).
Step-by-step explanation:
by question we realize that f(x)=(x+4.5)(x+2.8)a
now we can realize that f(0)=37.8 which results a=3
hence the equation of parabola is f(x)=3(x+4.5)(x+2.8)
HELP PLEASE !
And fast!!
Gwen prepared 12.3 kilograms of dough after working 10 hours. How many hours did Gwen
work if she prepared 13.53 kilograms of dough? Solve using unit rates.
Answer:
13.530 hours.
Step-by-step explanation:
Do 13.53 multiplyed by 10 and that will get your answer. Don't forget the decimal!!
Clothing sizes are not standardized across brands. Suppose that a large study of women's size 14 jeans revealed that the mean hip measurment was 42.3 in with a standard deviation of 1.2 in. As part of a project for a fashion merchandizing class, Mallorie selects a simple random sample of 15 pairs of women's size 16 jeans and records the following hip measurements. in inches. 44.5,43.0, 46.6, 42.9.43.7.43.9.42.4, 43.2, 43.1.44.4.46.1, 44.7,44.4, 43.9,44.7 Mallorie plans to use this data to construct a 99% confidence interval for fe, the mean hip measurement of women's size 16 jeans. She assumes that the hip measurements are normally distributed and that the population standard deviation is 1.2 in. The sample mean, x, is the point estimate for a confidence interval to estimate a population mean. What is the mean hip measurement for the random sample of 15 pairs of women's size 16 jeans? What is the margin of error for Mallorie's confidence interval? Choose the correct interpretation of Mallorie's confidence interval. a. Mallorie is 99% sure that the mean hip measurement of size 8 jeans is between 37.71 in and 38.67 in. b. In 99% of all samples, the sample mean will fall between 37.66 in and 38.73 in. c. There is a 99% chance that the mean hip measurement of size 8 jeans falls between 37.71 in and 38.67 in. d. There is a 99% chance that the mean hip measurement of size 8 jeans falls between 37.66 in and 38.73 in. e. Mallorie is 99% sure that the mean hip measurement of size 8 jeans is between 37.66 in and 38.73 in.
Using the z-distribution, we have that:
The mean hip measurement for the random sample of 15 pairs of women's size 16 jeans is of 44.1 inches.The margin of error is of 0.8 in.The interpretation is: Mallorie is 99% sure that the mean hip measurement of size 16 jeans is between 43.3 in and 44.9 in.The first step to solve this question, before building the confidence interval, is finding the sample mean, which is the sum of all observations divided by the number of observations. Hence:
[tex]\overline{x} = \frac{44.5+43.0+46.6+42.9+43.7+43.9+42.4+43.2+43.1+44.4+46.1+44.7+44.4+43.9+44.7}{15} = 44.1[/tex]
The margin of error of a z-confidence interval is given by:
[tex]M = z\frac{\sigma}{\sqrt{n}}[/tex]
In which:
z is the critical value. [tex]\sigma[/tex] is the population standard deviation. n is the sample size.We have to find the critical value, which is z with a p-value of [tex]\frac{1 + \alpha}{2}[/tex], in which [tex]\alpha[/tex] is the confidence level.
In this problem, [tex]\alpha = 0.99[/tex], thus, z with a p-value of [tex]\frac{1 + 0.99}{2} = 0.995[/tex], which means that it is z = 2.575.
Then, the margin of error is:
[tex]M = z\frac{\sigma}{\sqrt{n}}[/tex]
[tex]M = 2.575\frac{1.2}{\sqrt{15}}[/tex]
[tex]M = 0.8[/tex]
The margin of error is of 0.8 in.
The interval is:
[tex]\overline{x} \pm M[/tex]
[tex]\overline{x} - M = 44.1 - 0.8 = 43.3[/tex]
[tex]\overline{x} + M = 44.1 + 0.8 = 44.9[/tex]
The interpretation is:
Mallorie is 99% sure that the mean hip measurement of size 16 jeans is between 43.3 in and 44.9 in.
A similar problem is given at https://brainly.com/question/25300297
In the first 3 months of the year,
an electronics store sold 1,446 cameras.
How many cameras did the store sell in March?
Write and solve an equation.
DUE IN 15 MINUTES PLEASE HELP
Tony and Ricky spend a certain amount of money from their accounts each week at a pet shelter.
The table shows the relationship between the amount of money (y) remaining in Tony's account and the number of weeks (x):
Function 1:
Number of Weeks
(x) Amount Remaining (dollars)
(y)
1 30
2 24
3 18
4 12
The equation shows the relationship between the amount of money, y, remaining in Ricky's account and the number of weeks, x:
Function 2:
y = –7x + 30
Which statement states and explains which function shows a greater rate of change?
Function 1, because Tony spends $6 each week and Ricky spends –$7 each week
Function 2, because Ricky spends $7 each week and Tony spends $6 each week
Function 1, because Tony spends $18 each week and Ricky spends $23 each week
Function 2, because Ricky spends $30 each week and Tony spends $18 each week
Answer:
Function 2, because Ricky spends $7 each week and Tony spends $6 each week
Step-by-step explanation:
You find the rate of weekly rate of change by calculating the difference of the amount changing each week:
24 - 30 = - 6
18 - 24 = - 6
12 - 18 = - 6
As you see the rate of change is constant: - 6 dollars per week. This means that Tony is spending 6 dollars every week
Function 2: y = –7x + 30
The rate of change is the slope (m) of the linear function, and this is the coefficient of the independent variable, x.
This equation is written in slope intercept form (y= mx+b)
Then the rate of change is - 7 dollar per week. This means Ricky spends 7 dollars every week.
Now you know that the two rates are constant and that the second function shows a steeper decreasing.
Answer: it’s b lol
Step-by-step explanation: got it right on my quiz
Please help Please help
Answer:
with what
Step-by-step explanation:
PLEASE HELP ASAP!!! WILL GIVE BRAINLIEST!!! Test each statement below to see if it is reversible. If it is reversible, write it as a true biconditional. If not, write not reversible.
1. If a whole number is a multiple of two, then the whole number is even.
2. Rabbits are animals that eat carrots.
3.Two lines that intersect to form four 90 degree angles are perpendicular.
4. Mammals are warm blooded animals.
Answer: 1. not revisable
2. not revisable
3. Not reversible
4. not revisable
Step-by-step explanation: 1.Likewise, a number is a reversible multiple if the number formed by 2058 is not reversible because 8502/2058 = 4.131, which is not a whole number
2. When rabbits eat carrots you cannot form the carrot back to its original form so that's why its irreversible (not/non revisable)
3.If two perpendicular lines intersect, they form four 90* angles. ... whose sum measures to 90 degrees - The statement is not reversible
4. a few species of cold-blooded mammals exist but you cannot change a warm blooded animal into cold.
Noah Invested $2500 in an account paying 3.5% simple interest. How much was his account
worth after 5 years?
A. $2937.50
B.$437.50
C.$2587.50
D.$2969.22
_______
[tex] \: [/tex]
$2.500 × 3,5% = $87.500
Soo :
$87.500 × 5
= $437.50 (B.)
Help!!! evaluate peicewise functions
Answer:
9
Step-by-step explanation:
You choose the middle one because 3<(4)<10 makes sense where as the other ones don't when you plug in 4. Then you solve the equation which is x^2-7 and then you get 16-7 which is 9.
consider the expression
[tex] \sqrt{a^{2} + 12 } + |b| [/tex]
when a = -2 and b= 14. what is the value of the expression?
show work
Answer:
18
Step-by-step explanation:
[tex]\sqrt{((-2)^2 + 12)} + 14[/tex]
= [tex]\sqrt{(4 + 12)} + 14[/tex]
= [tex]\sqrt{16}+14[/tex]
= 4 + 14
= 18
Hope this helps!
Answer:
[tex] \sf 18[/tex]
Step-by-step explanation:
[tex] \sf = \sqrt{ { - 2}^{2} + 12} + |14| [/tex]
[tex] \sf = \sqrt{(( - 2) \times ( - 2)) + 12} + 14[/tex]
[tex] \sf = \sqrt{4 + 12} + 14[/tex]
[tex] \sf = \sqrt{16} + 14[/tex]
[tex] \sf = \sqrt{ {4}^{2} } + 14[/tex]
[tex] \sf = 4 + 14[/tex]
[tex] \sf = 18[/tex]
Which number replaces the question mark?
Answer:
iI think the answer is 9
Step-by-step explanation:
Em dois retângulos semelhantes, a ampliação foi de 10 cm por 12 cm, para 20 cm por 24 cm, qual a razão de semelhança (K)?
Answer:
1,2
Step-by-step explanation:
What is the difference between reciprocal, opposite, and inverse in math?
Answer:
The difference between “inverse” and “reciprocal” is just that. ... “Inverse” and “reciprocal” are terms often used in mathematics. “Inverse” means “opposite.” “Reciprocal” means “equality,” and it is also called the multiplicative inverse.Step-by-step explanation:
Answer: Reciprocal- when you flip the denominator and the numerator in a fraction
Step-by-step explanation:
Im reading the book Elie Wiesel
1. How does Elie manage to keep some of his teeth temporarily?
2. What happens to people who disobey the rules of the camp?
3. Why does the hanging of the “pipel” stay in Elie’s mind?
Answer: 1. tells the dentist that he doesn't feel well and that he will come back next time.
2. get sent to the crematory
3.Because the boy was young and beautiful.
hopes this helps
PLEASE HELP!!!
find the x-intercept and y-intercept of the line.
2x+3y=-18
Answer:
x intercept (-9,0)
y intercept (0,-6)
Answer:
(9,0) is x intercept and (0,6) is y intercept
Step-by-step explanation:
Yolanda makes $1,196 gross income per week and has claimed two allowances. According to the table below, what is Yolanda’s weekly net income after tax withholding?For weekly gross income between 1,190 and 1,200 dollars and claiming 2 allowances, the amount withheld is 317 dollars per week.a.$879b.$317c.$873d.$1,513
Answer:
$879
Step-by-step explanation:
Answer: it's A
Step-by-step explanation:
[tex]\sf 2x+12=4[/tex]
Answer:
x = -4
Step 1: Take all the constants on one side and the variables on the other.
(2 × x) + 12 = 4
=> (2 × x) = 4 - 12
(2 × x) = -8
Step 2: Divide 2 both sides to isolate 'x'.
=> [tex]\frac{2x}{2}[/tex] = [tex]\frac{-8}{2}[/tex]
=> x = -4
Hoped this helped.
Guided Practice
What will the height of the pumpkin be when it has been in the air for 1 second?
A.
15 feet
B.
85 feet
C.
91 feet
D.
69 feet
Answer:
D.
69 feet
Step-by-step explanation:
Substitute 1 into the function for t and solve.
h( 1 ) = −16 ( 1 ) 2 +70( 1 )+15 h( 1 ) = 69h left parenthesis 1 right parenthesis equals negative 16 left parenthesis 1 right parenthesis squared plus 70 left parenthesis 1 right parenthesis plus 15 line break h left parenthesis 1 right parenthesis equals 69
Answer:
A i think its wrong srry
Step-by-step explanation:
I don't understand this question can someone help me with this please, please explain!! and thank you for the help!! If u dont know try your best. Please do it quick, please do all :D
Answer:
1: 0.625, 2: 1.05, 3: 2 13/20
Step-by-step explanation:
Use a calculator to determine the exact value of the fractions, or do it by hand.
Answer:
0.625 , 1.05, 2 13/20
Step-by-step explanation:
Well, this isn't that hard if you really think about it.
For Number 1: 5/8 as a decimal, first you want to divide
100 by 8, which equals to 12.5. Then multiply 12.5 by 5 which gets you 62.5
Move the decimal place 2 to the left, and you get 0.0625.
For Number 2: 1 and 1/20
100/20=5
So you have 1 and 5/100, convert 5 to percent so 5%
5%+100%=105%
105= 1.05
Number 3: 2.65
100/20=5
13x5=65
0.65+2= 2.65, 2 13/20.
help me no link dummys jk A venue is preparing for a concert on the floor shown.The width of the red carpet is 1/6 of the width of the floor.What is the area of the red carpet
Answer:
The area of the red carpet is 1057 ft²
Step-by-step explanation:
The area of the red carpet is 112.35 ft².
Given that, the width of the stage =63 ft and the length of the stage =10 2/3 ft.
What is the area of a rectangle?The area of a rectangle is obtained by multiplying its length and width. Thus, the formula for the area, 'A' of a rectangle whose length and width are 'l' and 'w' respectively is the product "l × w".
Now, the width of the red carpet is 1/6 of the width of the floor = (1/6) × 63
=10.5 ft
Here, 10 2/3 can be written as 10.66 ≈ 10.7 ft
The area of the red carpet = length × width = 10.7 × 10.5
=112.35 ft²
Therefore, the area of the red carpet is 112.35 ft².
To learn more about the area of a rectangle visit:
https://brainly.com/question/20693059.
#SPJ2
100 point will mark brainliest to first answer only
Answer: no yes
Step-by-step explanation:
Answer:Yes, there is (ASA)
Step-by-step explanation:
Here, we have a side common to the two triangles. That makes S
Also, we can see an angle on both triangles, that makes A
Lastly, there is a right angle on both triangle
That makes another A
So we have the ASA to prove the congruence of the two triangles
MARKING BRAINLIEST
Ryan wants to describe the translation shown on the grid below.
On a coordinate plane, triangle X Y Z is shifted 1 unit to the left and 3 units up to form triangle X prime Y prime Z prime.
Ryan uses the following steps to describe the translation.
Step 1 Identify the pre-image and the image:
The pre-image is triangle XYZ, and the image is X prime Y prime Z prime.
Step 2
Identify the number of units that each point moves horizontally:
Each point moves one unit left.
Step 3
Identify the number of units that each point moves vertically:
Each point moves three units down.
Step 4
The translation is one unit left and three units down.
In which step did Ryan make the first error?
Step 1
Step 2
Step 3
Step 4
Answer:
Step 3 TRUST ME
Step-by-step explanation:
Answer:
C
Step-by-step explanation:
1 If finding unit rate, what would be the best buy for potato chips? A. 18 oz. for $4.17 B. 32 oz for $7.92 C. 20 oz for $5.19 D. 30 oz for $5.99
Answer:
B.
Step-by-step explanation:
Unit rate is $4.04 per oz
2/3y+1=1/6y+8 solve for y
Answer:
y = 14
Step-by-step explanation:
(2/3)y + 1 = (1/6)y + 8
multiply everuything by 6 to eliminate the fractions
4y + 6 = y + 48
Subtract y from both sides
3y + 6 = 48
subtract 6 from both sides
3y = 42
Divide both sides by 3
y = 14
Help. Please
And
Thank u
<3
Step-by-step explanation:
α = α
x = 96°
Answer → x = 96° (degree)
Answer:
96 Degrees
Step-by-step explanation:
If we look at the problem, we know that due to the fact that they are adjacent that they MUST be equal.
Here is the proof:
We'll assign each angle a letter as following
A B C D with A being the top left and D being the bottom right!
Now that we know that, first off, A has to be equal to 180-96 due to them being Supplementary Angles.
Therefore, A is 84 degrees.
Now to find x, we can use Supplementary Angles again.
x has to be 180-84 which is 96 degrees proving the theorum.
Have a nice day!
Please help me with my math yes or no question
Answer:
no
Step-by-step explanation:
Manassas Park is selling tickets for their fall musical. On the first day of sales, we sold 3
adult tickets and 9 student tickets. They made $75. On the second day of sales, we sold
8 adult tickets and 5 student tickets and made $67. How much does an adult and a
student ticket cost?
Answer:
Adult: $ 4
Student: $ 7
Step-by-step explanation:
Adult: x
Students: y
a) 3x + 9y = 75
b) 8x + 5y = 67
Substitution:
a) 3x = -9y + 75
x = (-9y + 75)/3
x = -3y + 25
Substitute:
b) 8(-3y+25) + 5y = 67
-24y + 209 + 5y = 67
-19y = -209 +67
y = -133/-19
y = 7
Substitute:
x = = 3(7) + 25
x = -21+25
x = 4
Twenty percent of a class is made up of girls. If there are 40 students in the class, how many are girls ?
Answer:
8
Step-by-step explanation:
20 percent of 40 is 8
I hope this is 5he answer you were looking for
What is the quotient of -3/8 and -1/3?
A. -1 1/8
B. -1/8
C. 1/8
D. 1 1/8
Answer: A
Step-by-step explanation: if i recall, for the second Number, when flipping the number the sign flips to. If it's not A, it's D
-3/8 × 3/1 = -9/8= 1 1 / 8
The third term of a geometric sequence is -10, and the fourth term is -5. Find the first term and the fifth term.
a. a1 = 80 and a5 = 2
b. a1 = -40 and a5 = 5/2
c. a1 = 40 and a5 = 5/2
d. a1 = -40 and a5 = -5/2
Find the common ratio of the given geometric sequence: -1, 3, -9, 18, ...
a. -1/3
b. -3
c. 1/3
d. 3
The third term of a geometric sequence is -10, and the fourth term is -5. Find the common ratio.
a. -1/2
b. -2
c. 1/2
d. 2
Answer:
a,b,a
Step-by-step explanation:
