There are different kind of speed in mathematics like average speed, instantaneous peed, to solve this question we need to know the concept of average speed. Therefore the correct option is option B
What is average speed?
Average speed is defined as the total sum of distance divided by total sum of time
Mathematically,
Average speed = total distance ÷total time taken
Here we have to find the percent of of Celina’s average running speed
So for this we will apply formula as
(Difference in distance ÷original distance)×100
So from question, Celina walk 4 miles in 1 hour and can run 8 miles in 1 hour so, the the difference in distance between running and walking is 8-4= 4
So to find the percent of Celina’s average running speed is her average walking speed = (4 ÷8)=50%
Therefore, Celina’s average running speed is her average walking speed is 50%. The correct option is Option B
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jill has $9.96 in nickles,pennies, and dollar bills. she has 12 more pennies than nickles and fove fewer dollar bills than nickles. how many of each does she have?
Jill has 14 nickels, 26 pennies, and 9 dollar bills.
To solve Jill's problem involving money in nickels, pennies, and dollar bills, we can use algebra. Let's define the variables as follows:
n for number of nickels
p for number of pennies
d for number of dollar bills
We know that:
p = n + 12
d = n - 5
A nickel is worth 5 pennies, so 5n represents the value of nickels in pennies.
Each dollar bill is worth 100 pennies.
In total, Jill has $9.96, which is the same as 996 pennies.
The total amount in pennies can be written as:
5n (nickels) + p (pennies) + 100d (dollar bills) = 996
Substitute the first two equations into the total:
5n + (n + 12) + 100(n - 5) = 996
Simplify and solve for n:
106n - 500 = 996
106n = 996 + 500
106n = 1496
n = 1496 / 106
n = 14
Using the values we just found for n, we can find p and d:
p = n + 12 = 14 + 12 = 26
d = n - 5 = 14 - 5 = 9
So, Jill has 14 nickels, 26 pennies, and 9 dollar bills.
What is 35,506 divided by 438
Robert's recipe has 5 onions and 9 tomatoes for the pizza. Jeff's recipe has 8 onions and 10 tomatoes for the pizza. Whose recipe has a lower ratio of onions to tomatoes
Round each number to the nearest thousand 95,438 + 62,804
95,438 to the nearest thousand is : 95,000.
62,804 to the nearest thousand is : 63,000.
Please check over this!! 20 points! easy fractions
8 SIMPLE QUESTIONS
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QUESTION 1
All of the following fractions are proper fractions, except
A-11/12
B-7/5
C-1/6
or D- 8/15
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QUESTION 2
How could you model the fraction 3/8 with a circle?
A-Divide the circle into eight equal pieces, and shade three of them.
B-Draw three circles, and shade eight pieces.
C-Divide the circle into three equal pieces, and shade eight of them.
D-Divide the circle into eleven pieces, and shade one of them.
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QUESTION 3
Kara has four boy cousins and three girl cousins. Write a fraction to represent the part of her cousins that are girls. Use / for the fraction line.
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QUESTION 4
Josh has eight pairs of white socks, two pairs of black socks, and one pair of blue socks. Write a fraction to represent the part of his socks that are white. Use / for the fraction line.
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In a science experiment, two tomato seeds were planted and watered. After six weeks, the plant that was fertilized was 26 centimeters tall. The plant that was not fertilized was only 74% as tall. What was the height of the shorter plant?
Answer:
Which expressions result in a product that has a best estimate of 80? Select all that apply.
A. 0.82 x 112
B. 42.3 x 21
C. 1.2 x 78
D. 0.19 x 37
E. 8 x 9.62
Answer:
Step-by-step explanation:
E and B are he answers
Answer:
Step-by-step explanation:
i took it and it was a, c and e
Mike is making a nut mixture for an upcoming camping trip. He makes the mixture by combining of a cup of cashews and of a cup of almonds. If he wants to add cashews and almonds in the same ratio to make 28 cups of the mixture, how many cups of cashews and almonds will he need?
−1.26×n=−10.08
n=?
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Add 13 5/12 +(-4 11/12) . Reduce, if possible
Answer:
the answer is 8 1/2 or 8.5 :)
Step-by-step explanation:
1052 divided by 52
Write it in the simplest form
hi I really need help with a and b. thank you
Two quantities, x and y, are directly proportional. If you take a third of x, what happens to y?
A: It is tripled.
B: It is cubed.
C: It depends on the starting value of x.
D: It is multiplied by 1/3.
One-third of x will also give one-third of y. The correct option is D.
What is an expression?The mathematical expression is the combination of numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.
Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.
Given that two quantities, x and y, are directly proportional. If x is directly proportional to y it means that x varies directly with y.
x ∝ y
If multiply the value of x by ( 1 / 3 ) the value of y will also be multiplied by ( 1 / 3 ).
Therefore, one-third of x will also give one-third of y. The correct option is D.
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Austin is going to the movie theater. It is 3 3/5 miles from his house. Austin takes his scooter, but it breaks down 2/3 of the way to the theater. How far is Austin from his house?
Final answer:
Austin's scooter breaks down 2/3 of the way to the movie theater, which is 3 3/5 miles away from his house. After covering 2/3 of the journey, he is therefore 1 1/5 miles from his house.
Explanation:
Austin is going to the movie theater which is 3 3/5 miles from his house. When his scooter breaks down 2/3 of the way there, we need to calculate how far he is from his house. To find this, we multiply the total distance to the movie theater by the fraction 2/3:
3 3/5 miles = 18/5 miles (since 3 3/5 = 15/5 + 3/5 = 18/5)(18/5) * (2/3) = 36/15 = 12/5 milesThis means Austin covered 12/5 miles when his scooter broke down, leaving him with the remainder of the journey to complete:
Total distance - distance covered = 18/5 miles - 12/5 miles = 6/5 milesTherefore, Austin is 6/5 miles or 1 1/5 miles from his house.write an equation, in slope-intercept form, to model each sitution. : the population of pine bluff is 6791 and is decreasing at the rate of 7 per year.
if 2=27,what is the measure of the supplement of gbc
Use linear approximation to estimate 1/4.002
The estimation for 1/4.002 is approximately 0.2499.
Linear approximation involves using the equation of a line to estimate a value close to a given point. In this case, to estimate 1/4.002, we can use the fact that 1/4 is approximately 0.25 and find the equation of the line passing through 1/4 and 1/4.002.
To find the linear approximation, we first determine the slope between the two points, which is the derivative of the function at the known point. Then, we use the point-slope form of a line equation to find the approximation. Rounding to four decimal places, the estimate for 1/4.002 is approximately 0.2499
Which of the following is an equivalent form of the mixed number -12 3/4?
A) 45/5
B) -51/4
C) -45/4
D) -48/4
Suppose you randomly select a letter from BURGER AND STARBIRD. Imagine writing these letters on Ping-Pong balls – one letter per ball – then putting them all in a barrel and removing one. What is the probability of pulling out an R? What is the probability of pulling out a B? What is the probability of pulling out a letter that appears in the first half of the alphabet? What is the probability of pulling a vowel?
What is 45−−√ in simplest radical form?
Aa a member of a music club you can order CDs for $14.99 each the music Club also charges 4.99 for each shipment the expression 14.99n + 4.99 represents the cost of n CDs find total cost for ordering 3 CDs
n =3
equation 14.99n +4.99 =
14.99*3 + 4.99 = 44.97 + 4.99 = $49.96
find 43 + 28. draw jumps and label number line to show your thinking
Which digit in 98.765 is in the thousandths place
Andrea gets 3 7/8 yards of purple ribbon, 3.7 yards of pink ribbon and 3 4/5 yards of blue ribbon. List the numbers in order from least to greatest.
A cell phone company charges a monthly fee plus $0.25 for each text message. The monthly fee is $30.00 and you owe $59.50. Write and solve an equation to find how many text messages x you had.
Answer:
An equation is 0.25x+30=59.5.
You had 118 text messages.
Step-by-step explanation:
Flying to miami whit a tailwind a plane averaged 376 mph. On the return trip the plane only averaged 312 mph while flying back into the same wind. Find the speed of the wind and speed of the plane in still air.
please show me the work
which function is increasing? HELP
Hiya :)
The answer is
f(x)=5^x
Hope this helped!!!!
Have a great day!!!!
:)))
Which expression is equivalent to 5.4−1.8 ? A. −1.8+5.4 B.−1.8−5.4 C. 1.8 + 5.4 D.1.8−5.4
Consuela wrote the expression 2 × (31 + 47). She states that the expression is a product and that the expression (31 + 47) is a factor. Marcus states that the expression (31 + 47) is a sum of two terms. Who is correct? Explain.
Answer: They are both correct, A sum is anything added together, so 31 + 47 is a sum.
When filing jointly, Melvin and Sylvia have a standard deduction of $11,400, they can claim one exemption for each of them for $3650 each, and they don't have any additional adjustments to income. What is their taxable income?
To calculate Melvin and Sylvia's taxable income when filing jointly, subtract their standard deduction and exemptions from their adjusted gross income.
Explanation:To calculate Melvin and Sylvia's taxable income when filing jointly, we need to subtract their standard deduction and exemptions from their adjusted gross income.
Given that their standard deduction is $11,400 and they can claim one exemption each valued at $3,650, the calculation is as follows:
Taxable income = Adjusted gross income - (Standard deduction + Exemption)
Let's say their adjusted gross income is $30,000. Plugging in the values, we get:
Taxable income = $30,000 - ($11,400 + $3,650 + $3,650)
Taxable income = $30,000 - $18,700 = $11,300
Therefore, their taxable income is $11,300.