4. During a book sale, Alex sold 1 book for 55.00,
2 books for $4.50 each, and 4 books for $2.50 each.
Dana sold 3 books for $1.50 each and 2 books for
$5.00 each. What was the most frequently occurring
sale price for these 12 books?
(A) $2.50
(B) $4.00
(C) $4.25
(D) $4.50
(E) $5.00
Answer: A.) 2.50
Step-by-step explanation:
4 books sold for $2.50, which is the most books for one set price.
In the inequality, what are all the possible values of x?
2(x + 12) - 16 58
Answer:
B)
Step-by-step explanation:
2(x + 12) − 16 ≤ 8
I am joyous to assist you anytime.
Answer:
b
Step-by-step explanation:
:)
A principal decides to survey the parents at her school to find out their opinion on
standardized testing. She calls randomly-chosen parents between 4:00 and 5:00 P.M.
every day for a week and collects data on their responses. Identify the population
and the sample. Give a reason why the sample could be biased.
Oa)
Population: All parents who respond to the survey
Sample: All parents with students at the school
Possible Bias: The parents who answered the phone may not be
representative of the whole population because younger parents are more
likely to answer the phone than older ones.
b)
Population: All parents with students at the school
Sample: All parents who respond to the survey
Possible Bias: Parents who are at home between 4:00 and 5:00 P.M. may not
be representative of the whole population.
Oc) Population: All parents with students at the school
Sample: All parents who respond to the survey
Possible Bias: Some parents do not like a particular teacher.
d)
Population: All parents who respond to the survey
Sample: All parents with students at the school
Possible Bias: Some of the people contacted did not answer every question
Answer: B
Population: All parents with students at the school
Sample: All parents who respond to the survey
Possible Bias: Parents who are at home between 4:00 and 5:00 P.M. may not be representative of the whole population.
3. Emma purchased a bicycle at a garage sale for $56. She later sold the bicycle online for $85.What was the percent increase of the price of the bicycle?
Answer:
51.7857143% increase is the percent increase of the price of the bicycle.
Step-by-step Explanation on finding percent increase using this question:
Formula needed:
% increase = 100 x (final-initial)/ | initial |
1. % increase = 100 x (85-56)/56
2.% increase = 100 x 29/56
3. % increase = 100 x 0.517857143
4. % increase = 51.17857143 (final answer)
Round if told by directions to do so.
Which values of x are solutions to this equation? |x/-4| = 2
-x = 4 or x = 8
-x = 2 or x = 6
-x = -2 or x = 2
-x = -8 or x = 8
Answer:
Step-by-step explanation:
|x/-4| = 2 corresponds to two different equations:
1) -x/4 = 2 if x/-4 is already positive, and
2) x/4 = 2 if -x/4 is negative, due to the absolute value operator
In case 1, -x = 8, or x = -8
and
in case 2, x = 8
so the solution set is {-8, 8}
Double check to ensure that you have copied down this problem correctly. Your " |x/-4| " looks odd/ambiguous
Answer:
|x/-4| = 2 corresponds to two different equations:
1) -x/4 = 2 if x/-4 is already positive, and
2) x/4 = 2 if -x/4 is negative, due to the absolute value operator
In case 1, -x = 8, or x = -8
and
in case 2, x = 8
so the solution set is {-8, 8}
Double check to ensure that you have copied down this problem correctly. Your " |x/-4| " looks odd/ambiguous
Step-by-step explanation:
Mr. Diaz decreased the speed of his car by 40 miles per hour over a period of 10 seconds. Find the average change in speed each second
Answer: the answer is 3 mph/second
Step-by-step explanation:
PLS HELPPP!!! ITS' IMPORANTANT!
Below
Answer:
1st year value =45$ 2nd year value=45+2.80$=47.80$ 3rd year value=47.8+2.80$=50.60$ 4th year value=50.60+2.80=53.40$ 5th year value=53.40+2.80=56.20$ ater 5 years value of share becomes 56.20$ or share after 5 years= 45+4*2.80=45+11.20=56.20$
Hope i helped plz mark brainiest if you want
How long does it take each horse to run a mile? Please answer ASAP!
Can someone answer this problem
Answer:
-9
Step-by-step explanation:
[tex](f^-^1o g^-^1)(-13)\\f^-^1(g^-^1(-13))\\g^-^1(-13) = -7[/tex]
the inverse function is essentially where the inputs and outputs are swapped
[tex]f^-^1(-7) = -9[/tex]
Ggffhjvthhhgggyrrhhj
Ritus mother's age is 7 years more than two time Ritus age. Ritus mother is 37 years old. Set up an equation to find Ritus age (Take Ritus age to be 'x' years)
Answer:
2x + 7 = 37
Ritu's age = 15 years
Step-by-step explanation:
Given:
Ritu's mother age = 37
Find:
Ritu's age
Assume;
Ritu's age = x
So,
2x + 7 = 37
2x = 30
x = 15
Ritu's age = 15 years
There are 3 white tiles for ever 5 shaded tiles.There are 40 tiles all together.How many tiles are white?How many tiles are shaded?
Answer:
25 shaded tiles and 15 white tiles
Step-by-step explanation:
Added up these all make 40 tiles, making them the only answer. Hope this helps.
An object is dropped off a cliff and falls freely. It speeds up as it falls toward the ground.
The graph below shows the velocity in meters per second (m/s) of the object (denoted by the vertical axis) as a function of time in seconds (denoted by the horizontal axis). Note that the relationship is linear.
This relationship is given by the equation, v = gt. In this equation, g is the acceleration due to gravity, t is the number of seconds, and v is the velocity of the falling object. Note that g is a constant.
Find and interpret the meaning of the initial value and the rate of change in this context.
Answer:
The initial value is 0. That means that object’s initial velocity 0 m/s. The rate of change is 9.8. That means the acceleration due to gravity is 9.8 m/s 2.
Hope this helps :)
f (x)= x + 2
f (10) =
At the end of March, a computer company
has a net worth of -$14,587. By the end of
December of the same year, the company's
net worth had increased
by
$28,465.
What was the company's net
worth at the end of December?
Answer:
$12,088 dollars
Sabastian bought some apples. Brandon bought 12 apples. He bought 2 times as many as Sabastian. Write an equation and solve for the unknown number of apples Sbastian bought.
Answer:
Step-by-step explanation:
2X =12
x=6
sebastian tendia 6 manzanas
Can somebody help me ?
Answer:
A. 2+9=9+2
Step-by-step explanation:
Find the sum. 6/9 • 1/3=?
Answer:
its 8.97 I think
Step-by-step explanation:
6.9×8.97
Answer:
[tex]\frac{6}{27}[/tex]
You are buying a pair of sneakers for $ 120. You have a coupon to save 45 %. How much will the sneakers cost ?
Answer:
$66
Step-by-step explanation:
→ Work out 45% as a multiplier
100 - 45 = 55 ⇒ 55 ÷ 100 = 0.55
→ Multiply the multiplier by the price
0.55 × 120 = $66
Answer:
54
Step-by-step explanation:
120 times 45 equals 5400 divided by 100 equals $54
Which of the following is a zero for the function f(x) = (x + 3)(x − 7)(x + 5)?
Answer:
-3, 7, -5
Step-by-step explanation:
Because of the zero-product-property, we can set each of the groupings to 0, to get each of our 3 zeroes.
x+3=0, x=-3
x-7=0, x=7
x+5=0, x=-5
A school drama department sells 40 more student tickets than adult tickets. Charging $8 for adult tickets and $6 for student tickets, the drama department raises a total of $1,920 in ticket sales. Let x represent the number of adult tickets sold and y represent the number of student tickets sold. Which system of equations can be used to find how many of each ticket is sold?
A school drama department sells 40 more student tickets than adult tickets. Charging $8 for adult tickets and $6 for student tickets, the drama department raises a total of $1,920 in ticket sales. Let x represent the number of adult tickets sold and y represent the number of student tickets sold. Which system of equations can be used to find how many of each ticket is sold?
Answer:
They sold 210 adult tickets
Step-by-step explanation:
6(40)+8x=1920
240+8x=1920
-240 -240
8x=1680
/8 /8
x=210
What’s the perimeter. Need help immediately
Answer:
20x^2-12x-20
Step-by-step explanation:
3x^2-7x+2 + 3x^2-7x+2 + 7x^2+x-12 + 7x^2+x-12
simplify
20x^2-12x-20
A person rents a scooter that travels at a average speed of 12 km/hr hoping to reach a beach 20 km away . How much time will it take to reach the beach
Answer:
1.5
Step-by-step explanation:
another question guys!!
Ryan needs to go to Target to buy a few things. He knows that the CD he wants is $12 and that he plans to buy a few DVDs as well. Each DVD is $5. If Ryan buys 3 DVD’s, how much money will he spend in total?
Answer:
27 dollars
Step-by-step explanation:
Basically it's just 3 x 5 + 12 or if ya want it broken down, 15 + 12
Answer:
Well the answer is either $27 or 22
If he's buying the $12 then the 3 $5 ones then its 27.
If he's just buying the $12 one then 2 $5 ones then its 22.
Hope this helps please mark brainliest!
Step-by-step explanation:
12+5+5+5=27
12+5+5=22
Carlita saw 5 times as many robins as she did cardinals while bird watching. She saw a total of 36 birds. How many more robins did she see than cardinals?
Answer: Calita saw 30 Robins and 6 Cardinals
Step-by-step explanation:
Step 1
writing the mathemathecal expression becomes
Let robins be represented as R
and Cardinals be represented as C
so our first equation becomes
R+C = 36----- eqn 1
but she saw 5times as many robins as cardinals, with a total of 36 birds making us have
Therefore R= 5C
5C +C= 36------- eqn 2
STEP 2--- solving equation 2
5C+C = 36
6C= 36
C= 36/6=6
Puting the valueof C=6 in equation 1 becomes
R+C= 36
R+6=36
R=36-6= 30
R=30
Therefore Calita saw 30 Robins and 6 Cardinals
You earned a 75% on a science test. You answered 18 questions correctly. How many
questions were on the test?
Answer:
24 questions
Step-by-step explanation:
18/3=6. This is 25% of the questions
4*6=24. This is 100% of the questions
Three consecutive odd integers are such that the sum of the smallest and the largest is 86. Find the value of the 2nd number.
Answer: The value of the second number is 43
Step-by-step explanation:
x+x+4=86
2x+4=86
2x=82
x=41
41+2=43
I hope you find this helpful :))
What is the answer please need help
Answer:
130
Step-by-step explanation:
so you take 35+95=130
then you take 180-130=50 to get the other angle in the triangle
then to get the missing angle you do 180-50=130
so that is the missing angle
The price of Stock A 9 AM was $12.71. Since then, the price has been increasing at the rate of $0.05 each hourAt noon the price of Stock 8 was \$13.46 . To decrease at the rate of by $0.12each hour. If the two rates continue, in how many hours will the prices of the two stocks be the same?
Answer:
4.4 hours
Step-by-step explanation:
Let the number of hours be represented as h
The price of Stock A 9 AM was $12.71. Since then, the price has been increasing at the rate of $0.05 each hour
$12.71 + $0.05 × h
12.71 + 0.05h
At noon the price of Stock 8 was \$13.46 . To decrease at the rate of by $0.12each hour.
$13.46 + $0.12 × h
13.46 - 0.12h
If the two rates continue, in how many hours will the prices of the two stocks be the same?
12.71 + 0.05h = 13.46 - 0.12h
0.05h + 0.12h = 13.46 - 12.71
0.17h = 0.75
h = 0.75/0.17
h = 4.41176470588 hours
Approximately = 4.4 hours
The prices of the two stocks be the same in 4.4 hours
The base area of a prism is 5 cm2. Find the height of the prism if its
volume is 24 cm. -
Answer:
4.8 cm
Step-by-step explanation:
What we know: V= 24 cm3 and b= 5 cm2
Formula: V= bh
24cm3= (5cm2)h
4.8 cm= h
