Answer:
Original: 3(5x - 2) + 3x
15x - 6 +3x
Answer: 18x - 6
Answer:
18x-6
Step-by-step explanation:
3(5x-2)+3x
Distribute 3 into the parathesis: 15x-6+3x
Combine like terms: 18x-6
Your final answer is 18x-6
Find the original price of a pair of shoes if the sale price is $168 after a 20% discount.
A. $210
B. $840
C. $93.20
D. $336
Answer:
A. 210
Step-by-step explanation:
A pack of gum that comes with 35 pieces is $2.88 how much is one piece of gum? (unit price)
Answer:
0.08
Step-by-step explanation:
What is the value of the expression 8(-6.3)
Answer:
-50.4
Step-by-step explanation:
X is normally distributed random variable with mean 63 and standard deviation 6, the probability that X lies between 45 and 81 is
Answer:
P(45<X<81) = P(-3<z<3)=0.9974 or 99.74%
Step-by-step explanation:
Mean = 63
Standard Deviation =6
We need to find probability that X lies between 45 and 81 i.e P(45<X<81)
First we will find z-score for X=45 and X=81
For X=45 the z-score can be found using formula: [tex]z-score=\frac{X-\mu}{\sigma}[/tex]
Putting values and finding z-score
[tex]z-score=\frac{X-\mu}{\sigma}\\z-score=\frac{45-63}{6}\\z-score=-3[/tex]
For X=45, z-score is -3
For X=81 the z-score can be found using formula: [tex]z-score=\frac{X-\mu}{\sigma}[/tex]
Putting values and finding z-score
[tex]z-score=\frac{X-\mu}{\sigma}\\z-score=\frac{81-63}{6}\\z-score=3[/tex]
For X=81, z-score is 3
Now finding the probability of P(-3<z<3)
It can be solved as:
P(-3<z<3)=P(z<3)-P(z<-3)
Looking at the z-score table to find
P(z<3)= 0.9987
P(z<-3)=0.0013
So, P(-3<z<3)=P(z<3)-P(z<-3)
P(-3<z<3)=0.9987 - 0.0013
P(-3<z<3)=0.9974
or P(-3<z<3)= 99.74%
So, P(45<X<81) = P(-3<z<3)=0.9974 or 99.74%
WILL MARK BRAINLIEST!!!
The production rate of a steel factory is declining due to old machinery. Over the last eight days production has dropped by 1.2 tons. What is the average rate of change in steel production over the eight days? Express the answer in tons per day.
A. +1.2
B. -1.2
C. +0.15
D. -0.15
Answer:
option D.
Step-by-step explanation:
average rate of change in steel production over the eight days=-0.15 tons per day
Step-by-step explanation:
The production rate of a steel factory is declining due to old machinery. Over the last eight days production has dropped by 1.2 tons.
Production is dropped by 1.2 tons, so its negative
Average rate of change = Change in production / number of days
Average rate of change = -1.2/ 8= -0.15
so sorry -0.15
You go to a Chicago Bears game. You spend a total of $72 buying brats "b" and hotdogs "h" for your group. You paid $6 per brat and $4 per hotdog. You bought a total of 14 brats and hotdogs. How many of each did you buy?
Two angles are supplementary. One has a measure that is five times as large as the other. Find the two angle measures.
Answer:
30° and 150°
Step-by-step explanation:
supplementary means that the sum of the measures = 180
let's say 1 angle is labled ∠A and the other ∠B
m∠A + m∠B = 180°
however, m∠A = 5 * m∠B
so, by substituting that:
5*m∠B + m∠B = 180°
6*m∠B = 180°
m∠B = 30°
m∠A = 150°
Collect like terms
−
8
d
2
−
3
d
2
Answer:
8,2,2,3
d,d,
HOPE THIS HELPS
Answer:
5d²
Step-by-step explanation:
Given
8d² - 3d² ← collect like terms by subtracting the coefficients, that is
(8 - 3)d²
= 5d²
help meeeeeeeeeeeeeee
Answer:
A
Step-by-step explanation:
If each lawn he mows earns him $25, at one lawn mowed he would have $25. At two lawns mowed he would have $50. At three lawns mowed he would have $75. We graph these points to get the graph of answer A.
why dose my teacher make me have my cam on even tho im eating
Answer:
Probably so she knows you are not playing video games and you are paying attention to what she is saying.
Step-by-step explanation:
Brainliest Please!!
- Hermionia
Answer:
because she's lonely and she misses seeing you guys I guess. My teachers ~itch abt it but they dont make us.
Step-by-step explanation:
If I have 23 dirty walnuts and divide the by 2 how many dirty walnuts would I have by chance? OMG PLEASE HELP QUESTION ALREADY LATE!!!
Answer:
23/2 equals 11.5
Step-by-step explanation:
Answer:
23 divided by two is 11.5
Step-by-step explanation:
I GIVE BRAINLILSET
\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\
Answer:
647$ USD
Step-by-step explanation:
You add 4% of each sale to eachother and to the 375. goodluck!
Answer:
7171
Step-by-step explanation:
i added it all up and thats what i got hope this helps and if right can i have brainlyest.
The dosage of a certain medication is 1/4 ounce for every 50 pounds of body weight. How many ounces of this medication are required for a person who weighs 175 pounds. Write your answer as a decimal.
Step-by-step explanation:
175÷50=3.5
3.5×1/4=0.875
How many sixteenths are there in 5/8
Answer:
10!
Step-by-step explanation:
Exuse me if im wrong :')
what is 3% increase of 775 dollars?
Answer:
23.25
Step-by-step explanation:
a new bank customer with $4500. wants to open a money market account. the bank is offering a simple interest rate 1.5%. how much interest will the customer earn in 20 years? what will the account balance be after 20 years?
Answer:
a. 1350
b. 6500
Step-by-step explanation:
1.5%×4500=5850
1350+4500=5850
write down the relation between mass and inerti
Answer:
The mass of an object is directly proportional to its inertia.
[tex]m\alpha I[/tex]
Where
m = mass
I = inertia
Step-by-step explanation:
We can first of all start by defining the two key terms present here - mass and inertia.
The mass of an object is the quantity of matter contained in the object.
The inertia of an object is the resistance of an object which is in a state of rest to motion
The mass of an object is directly proportional to its inertia.
The heavier an object is, the more inertia it has. To put things into perspective, you can easily push a bicycle because it does not really have a lot of mass, as opposed to pushing an eighteen-wheeler trailer.
PLEASE HELP ASAP!!!!
Sue is a waitress in a restaurant. She started the day with $20 in her pocket, and she earns an average of $5 for each table that she waits on. Which of the following graphs represents the money that Sue has in her pocket after waiting on x tables?
the last one
Hope this helps! :3
plz mark as brainliest!
Simplify the expression: 7(9x + 6y)
Answer:
63x + 42y
Step-by-step explanation:
P.S Can I have brainliest?
Order from least to greatest
11. 357
2. 1.02
13. .80
4. .002
15. .05
16. .40
Answer:
0.002 , 0.05 , 0.40 , 0.80 , 1.02 , 2 , 4 , 11 , 13 , 15 , 16 , 357
Step-by-step explanation:
11 , 357 , 2 , 1.02 , 13 , .80 , 4, .002 , 15 , .05 , 16 , .40
A rectangular parking lot is 3/4 mile long. If the area is 3/8 square mile, what is the width of the lot?
Answer:
it's .5 or 1/2
Step-by-step explanation:
3/8 ÷ 3/4 = 1/2
Determine whether each sum or product is even or odd.
10,481 + 4,569
Answer:
even
Step-by-step explanation:
11050 it's even because it ends in a zero
A family's monthly utility costs are: phone $200, electric $100, cable TV $100, water/gas $50, internet $50. By eliminating cable, by what percent does the family reduce total utility cost?
Answer: The total will drop by 20%
Use the number line to identify the least value, first quartile, median, third quartile, and greatest value of the data.
Ages of teachers (in years): 30, 62, 26, 35, 45, 22, 49, 32, 28, 50, 42, 35
Answer: least value - 22
first quartile - 29
median - 35
third quartile - 47
greatest value - 62
Step-by-step explanation:
78 * 5 i need the answer now pls.
Please help me with my question
Answer: use mahthway it hels
Step-by-step explanation:
Point slope form.
Y-4=
if the fourth term of an ap is 1 and sum of it first right term is 18 find the tenth term
The other answer choice is 30
Answer:
21 pencils
Step-by-step explanation:
b 21 pencils
Noah bought 15 baseball cards for $9.00. Assuming that each baseball card costs the same amount, answer the following questions.How much will 30 baseball cards cost?
Answer:
$18.00
Step-by-step explanation:
Because you know that 15 baseball cards costs 9.00. 30 is 2 15s added together. So you will do 9.00+9.00 in order to get the amount of money it needs. Double the baseball cards cost double the money.
Hope this helps. Please give brainliest.