Answer:
29 nickels, 12 dimes
If the number of nickels is 7 less than three times the number of dimes, the answers should be 29 nickels and 12 dimes. Hope it helps!
Answer:
dimes = $2.41nickels = $0.24Step-by-step explanation:
given:
A piggy bank contains $2.65 in nickels and dimes.
If the number of nickels is 7 less than three times the number of dimes,
find:
how many of each kind of coin are there?
solution;
total = $2.65 = d + n
let d = dimes
n = nickels
nickels = 3d - 7
plugin values into the formula:
2.65 = d + 3d - 7
2.65 + 7 = 4d
d = 9.65
4
d = $2.41
nickels = 3d - 7
= 3(2.41) - 7
n = $0.24
Identify the property used in this equation:
(-2) + 6 + 1 = 1 + 6 + (-2)?
commutative property
Use the interactive tool to evaluate the expression?
Answer is 5
Answer:
Commutative property
5
Step-by-step explanation:
The identity used in equation (-2) + 6 + 1 = 1 + 6 + (-2) is commutative property.
Given,
To Identify the property used in this equation:
(-2) + 6 + 1 = 1 + 6 + (-2)
commutative property
In mathematics, it deals with numbers of operations according to the statements.
Commutative property
The commutative property procedure applies to addition and multiplication. The addition procedure says that a + b = b + a and the multiplication procedure states that a x b = b x a. These procedures are used to define the notion that when adding or multiplying, values can “commute”, or resettle, and the outcome will not change.
Given equation,
(-2) + 6 + 1 = 1 + 6 + (-2)
Which shows the resettlement of -2, which does not affect the outcome of the equation. This is commutative property.
Thus, the identity used in equation (-2) + 6 + 1 = 1 + 6 + (-2) is commutative property.
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a product code consists of picking a two-digit number (including 00) and 3 not necessarily distinct letters. How many codes are possible? how many codes contain at least one 9? What is the probability that a code does not contain the number 9?
Answer:
The codes are:
N,_,_,_
Where each _ represents a possible letter, out of 26.
And N is a number of two digits.
So in total we can think that we have 5 empty slots.
_,_,_,_,_
In the first slot we can put any digit between 0 and 9, so here we have 10 options.
In the second slot we can put any digit between 0 and 9, so here we have 10 options.
In the third slot we can put any letter, so here we have 26 options (and exactly the same for the fourth and fifth slots)
The total number of different combinations is equal to the product of the number of options for each slot.
C = 10*10*26*26*26 = 1,757,600
Now, if we want to have at least one nine, we can fix it in the first slot.
Then we have:
in the first slot we have only one option (the 9)
In the second slot we can put any digit between 0 and 9, so here we have 10 options.
In the third slot we can put any letter, so here we have 26 options (and exactly the same for the fourth and fifth slots)
The number of combinations is:
C = 1*10*26*26*26 = 175,760
But we also should consider the case where we fix the 9 in the second slot, so the actual number of combinations is twice the number above.
C = 2*175,760 = 351,520
The probability that the code does not contain the number 9.
Now in the first slot we have only 9 options, all the whole numbers between 0 and 8.
The same for the second slot, 9 options.
For the third, fourth and fifth slot is the same as before.
The total number of combinations is:
C = 9*9*26*26*26 = 1,423,656
A child shot a toy rocket into the air from their playhouse which stood 5 ft above the ground. The rocket rose to 50 ft above the ground and landed on the ground 3.4 seconds later. The path of the toy rocket could be modeled by a quadratic function, h(t), where h is the height of the toy rocket in feet after t seconds.
(1) What is the practical domain of the function?
(2) What is the practical range of the function?
(3) How would the theoretical domain and range of the function differ from the practical domain and range of the situation?
Answer:
Part A)
All real numbers between 0 and 3.4 (including 0 and 3.4).
Part B)
All real numbers between 5 and 50 (including 5 and 50).
Part C)
See below.
Step-by-step explanation:
We know that the rocket rose to a maximum of 50 feet and was in the air for 3.4 seconds. The rocket started at a height of 5 feet.
Part A)
The practical domain of a function is the domain with the context. Here, our domain is the number of seconds that had passed. Time can't be negative, so our domain must be greater than or equal to 0. Also, since we know that our rocket landed after 3.4 seconds, this means that our practical domain is all real numbers between 0 and 3.4 including 0 and 3.4.
Part B)
The practical range of a function is the range with the context. Here, our range is the height the rocket reaches. We know that the rocket started at a height of 5 feet, so our practical range should be greater than or equal to 5. We also know that the maximum height the rocket reached was 50 feet. So, our practical range is all real numbers between 5 and 50 including 5 and 50.
Part C)
The theoretical domain and range differs from the practical domain and range in that the theoretical counterparts don't consider the context. For the theoretical domain and range, we will analyze this as a normal quadratic. Since it's a quadratic, the theoretical domain is all real numbers. Since our maximum value is y=50, our theoretical range is all numbers less than or equal to 50.
However, this can't be used since negative time (e.g. height after -2 seconds) is inapplicable and negative height doesn't make sense in this context either (well, technically negative height can indicate that the rocket goes underground, but this is not mentioned here).
So, it is important to determine when to use practical domain/range and theoretical domain/range!
Mark earns a weekly salary of $150 PLUS a commission of 9% of his sales. If his sales were $2600, what was his gross pay? $23550 $384 $234 $2490
Answer:
fiewjfilewjfiwj
Step-by-step explanation:
kjkejfke
What value does the three represent in the number 16.344
Answer:
in the number 16.344, the number 3 is in the tenths place
Step-by-step explanation:
What is the quotient two 1/5÷-1/10
Answer:
- 2
Step-by-step explanation:
Step 1:
1/5 ÷ - 1/10 Equation
Step 2:
1/5 × - 10/1 Flip Fraction
Answer:
- 2 Multiply
Hope This Helps :)
The Ride for Health Bicycle Club has chosen a 60-mile course for this Saturday's ride. If the riders plan on averaging 15 mph while they are riding, and they have a 2-hour lunch break planned, how long will it take them to complete the trip?
Answer:
6 hours
Step-by-step explanation:
Total time it will take to complete the trip = Total time spent on riding + Time taken for lunch break.
Distance to be covered = 60 miles.
D = 60
Speed of riding = 15 miles per hour
S = 15
Thus time taken to cover a distance 60 miles by riding at a speed of 15 mph:
T=D/S=60/15
T= 4hours
They will spend 4 hours on riding and 2 hour of lunch break.
Hence total time taken to complete the trip = 4 + 2 = 6 hours.
It will take 6 hours to complete the trip.
The number of hours taken by riders to complete the trip is 6 hours.
Given that, distance = 60 mile, speed = 15 mph and lunch break = 2 hours.
What is the speed?The speed formula can be defined as the rate at which an object covers some distance. Speed can be measured as the distance travelled by a body in a given period of time. The SI unit of speed is m/s.
Using speed formula Speed=Distance/Time
Here, 15 = 60/Time
⇒ Time = 60/15
= 4 hours
Total time taken in the trip is 4+2 = 6 hours
Hence, the number of hours taken by riders to complete the trip is 6 hours.
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a number minus the sum of the number and six. using x to represent the number
Answer:
x-(x+6)
Step-by-step explanation:
What is 24% of 337.5?
Answer:
81
Step-by-step explanation:
24% × 337.5 =
(24 ÷ 100) × 337.5 =
(24 × 337.5) ÷ 100 =
8,100 ÷ 100 =
81;
Square root of 121 over 2
Answer:
144
Step-by-step explanation:
What is the equation of a line between the points (3,5) and (1,15)
Answer: y = -5x + 20
Please mark me as brainliest
Answer:
Step-by-step explanation:
dont know for points
A milkshake recipe calls for 1/3 cup of milk for each milkshake. If a server has 15/8 cups of milk, what is the maximum number of
milkshakes the server can make following the recipe porpotians?
Answer:
5 milk shakes
Step-by-step explanation:
From the above question, we know that for the recipe
1/3 cup of milk = 1 milk shake
15/8 cup of milk = y milk shakes
We cross Multiply
15/8 cup × 1 = 1/3cup × y
y = 15/8 cup × 1 /1/3cup
= 15/8 ÷ 1/3
= 15/8 × 3
= 45/8
= 5.625 of 5 5/8 cups of milk
Therefore, the maximum number of
milkshakes the server can make following the recipe porpotians is 5 milk shakes.
does y=6x+5 represent a function? explain your answer
Yes, y = 6x + 5 is linear function.
Given that,
To explain does y = 6x+5 represent a function.
Functions are the relationship between sets of values. e g y=f(x), for every value of x there is its exists in a set of y. x is the independent variable while Y is the dependent variable.
Here,
y = 6x + 5, represents the line,
comparing it with the standard from the equation of the line,
y = mx + c
After comparing
m = = 6 and c = 5
And also for every value of independent variable x, there is a distinct value of dependent variable y.
Thus, Yes, y = 6x + 5 is linear function.
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evaluate piecewise functions
Answer:
17
Step-by-step explanation:
h(17) is falling under the top condition of:
h(t) = √17t as t = 17So the answer is:
h(17) = √17*17 = 17h(17) = 17Leroy owns a business earning $49,300 in profits. These profits are appreciating at about 2.9% each year. What are Leroy's profits after nine years?
Answer:
$63,765.43
Step-by-step explanation:
What is 5/8 divided by 1/4?
Answer:
5/2
Step-by-step explanation:
maureen has a rectangular vegetable garden. it is 9 3/4 feet wide and 12 1/2 feet long. She wants to put a fence around her garden. The fencing will be interrupted by one gate that is 48 inches wide. How much fencing does she need to fence the garden?
Answer:
40 1/2 ft
Step-by-step explanation:
48 in = 4 ft
9 3/4 x 2 + 12 1/2 x 2 - 4
19 1/2 + 25 - 4
19 1/2 +21
i really need help with this, I just started geometry and this is confusing
Given that P(A)=0.8 and P(B|A)=0.31, find the joint probability P(A and B):
============================================
Work Shown:
P(A and B) = P(A)*P(B|A)
P(A and B) = 0.8*0.31
P(A and B) = 0.248
The notation P(B|A) means "Probability of B given A". It's the same as "P(B) given event A has happened". It is conditional probability notation. The symbol between the A and B is a vertical line and not a letter.
(-7) times ? = -14 what are the missing numbers
Answer:
2
Step-by-step explanation:
-7 x 2 = -14
Answer:
-7*2=-14
Step-by-step explanation:
negative * positive = negative
Therefore, -7*2=-14
Hope this Helps!
help me out please
Answer:
[tex]\huge\boxed{\text{(D)} \ 2.25}[/tex]
Step-by-step explanation:
In order to find another way to represent the fraction [tex]2 \frac{1}{4}[/tex], we need to find different ways to represent fractions as a whole. One way to write fractions are as decimals.
We know that 2 as a decimal is just 2. We can leave that be for now.
We also know that [tex]\frac{1}{4}[/tex] as a fraction will just be [tex]1 \div 4[/tex], which is 0.25. Therefore, combining 2 and 0.25 we get 2.25.
Hope this helped!
Find the 11th term of the following geometric sequence.
1,5, 25, 125, ...
Answer:
9,765,625
Step-by-step explanation:
Please help it’s due at 5
Answer:
nei prossimi giorni, che si è svolto il convegno
Question 6 of 10
Parts of an algebraic expression separated by plus (+) or minus (-) signs are
A. factors
B. terms
C. coefficients
D. variables
Suzi’s brother has ten more than twice as many sports cards as Suzi does. Together, they have 70 sports cards. How many sports cards does Suzi have?
Answer:
I would say that suzi has 30 cards. because 30 + 30 = 60 and 60 + 10 = 70
Step-by-step explanation:
What is the value of x?
20
35
60
70
Answer:
X = 20
Step-by-step explanation:
Answer:
X=20
Step-by-step explanation:
on edu 2020
slope -2 passes through (-3,14)
Answer:
y = − 2 x + 8
Step-by-step explanation:
Find the value of b using the formula for the equation of a line.
Use the formula for the equation of a line to find b .
y = m x + b
Substitute the value of m into the equation.
y = ( − 2 ) ⋅ x + b
Substitute the value of x into the equation.
y = ( − 2 ) ⋅ ( − 3 ) + b
Substitute the value of y into the equation.
14 = ( − 2 ) ⋅ ( − 3 ) + b
Find the value of b .
Rewrite the equation
( − 2 ) ⋅ ( − 3 ) + b = 14 .
Multiply − 2 by − 3
6 + b = 14
Subtract 6 from both sides of the equation.
b = 14 − 6
Subtract 6 from 14 .
b = 8
Now that the values of
m (slope) and b (y-intercept) are known, substitute them into y = m x + b to find the equation of the line.
y = − 2 x + 8
What is 3(w+4)= -2(1.5-6).
Answer:
w = -1
Step-by-step explanation:
3(w + 14) = -2(1.5 - 6)
3w + 12 = -3 - (-12)
3w + 12 = 9
-12 -12
3w = -3
÷3 ÷3
w = -1
The chart below shows conversion between gallons and fluid Ounces. Conversion Chart Gallons Fluid Ounces 2 256 3 384 4 512 6 What is the missing value in the table? O 128 O 640 O 768 896
Answer:
b
Step-by-step explanation:
between gallons and Fluid Ounces.because The chart below shows the conversion
Answer: B
Step-by-step explanation:
\frac{2^{-8}}{2^2} = (25)h
pls answer fast
Answer
30
Step-by-step explanation