At 14:30, a bulldozer finished clearing 252 tons of snow from astreet. If the bulldozer cleared 0.80 ton of snow per min, atwhat time did the bulldozer start clearing the snow? Give youranswer in a 12-hour clock format, such as 9:00.IEnter the answer
Answers
Data:
Clear 252 tons of snow
Cleared 0.80 ton of snow per min
Calculate the number of minutes that takes the bulldozer to clear 252 tons of snow:
\(252\text{ton}\cdot\frac{1\min}{0.80\text{ton}}=315\min \)Turn that minutes into hours:
\(315\min \cdot\frac{1h}{60\min }=5.25h\)Then, it takes 5.25 hours (5 hours and a quarter) to clear 252 tons of snow.
The bulldozer finished clearing 252 tons of snow at 14:30, the bulldozer start clearing the snow 5 hours and a quarter before 14:30
The bulldozer start clearing the snow at: 9:15
Related Questions
(6x - 10)
((4x + 8)
8)
B
Angle Relationship: Adjacent OR Vertical_
Angle Rela
Answers
Answer:
It is Vertical Angle Relationship.how many terms are in 2x raised to the 9th power
Answers
Answer:
1 term
Step-by-step explanation:
2x^9 is one term, consisting of a coefficient of 2 and a variable to the 9th power.
If you mean (2x)^9, it is still one term: 512x^9, with a coefficient of 512 and a variable to the 9th power.
Answer:
One.
Step-by-step explanation:
2x itself is one term, so (2x)^9 is 2^9*x^9= 512x^9. It is still one term.
A car is traveling at a rate of 108 kilometers per hour. What is the cars rate in meters per second? How many meters will the car travel in 20 seconds?
Answers
Answer:
\(\frac{30meters}{second}\)
600meters
Step-by-step explanation:
Use conversion factors that represent 1. You can cross cancel wods just like numbers.
\(\frac{108km}{1hour}\) · \(\frac{1hour}{60 minutes}\) · \(\frac{1minute}{60seconds}\) ·\(\frac{1000meters}{1 km}\)
\(\frac{108000meters}{3600seconds}\)
\(\frac{30meters}{second}\)
\(\frac{30meters}{second}\) ·\(\frac{20seconds}{1}\)
600 meters
Helping in the name of Jesus.
A magazine costs 4.95 per month. If you buy a one year subscription, it's 30% cheaper. How much will you pay in one year with the discount?
Answers
Answer:
41.48/year
Step-by-step explanation:
4.95 x 12 = 59.40
59.40 × .30 = 17.82
59.40 - 17.82 = 41.48
Value of x in this? Having trouble with this problem.
Answers
I think it’s 105
Step by step explanation:
I hope this helped in some kind of way.
The total area of the polygon is 176 square feet. Find the value of x.
Answers
Answer:
x = 6 ft
Step-by-step explanation:
Total area of the given polygon = Area of triangle 1 + Area of rectangle 2 + Area of triangle 3
Area of triangle 1 = Area of triangle 3 = \(\frac{1}{2}(\text{Base})(\text{Height})\)
= \(\frac{1}{2}(x)(8)\)
= 4x square feet
Area of rectangle 2 = Length × Width
= 16 × 8
= 128 square feet
Total area of the given polygon = 4x + 128 + 4x
176 = 8x + 128
8x = 176 - 128
x = \(\frac{48}{8}\)
x = 6 ft
Answer:
The answer is six to one of the sides
Step-by-step explanation:
Total area of the given polygon = Area of triangle 1 + Area of rectangle 2 + Area of triangle 3
Area of triangle 1 = Area of triangle 3 =
=
= 4x square feet
Area of rectangle 2 = Length × Width
= 16 × 8
= 128 square feet
Total area of the given polygon = 4x + 128 + 4x
176 = 8x + 128
8x = 176 - 128
x =
x = 6 ft
The path of a punted football is modeled by
f(x) = −
16
1225
x2 +
7
5
x + 1.5
where
f(x)
is the height (in feet) and x is the horizontal distance (in feet) from the point at which the ball is punted.
(a) How high is the ball when it is punted?
Correct: Your answer is correct.
ft
(b) What is the maximum height of the punt? (Round your answer to two decimal places.)
Incorrect: Your answer is incorrect.
ft
(c) How long is the punt? (Round your answer to two decimal places.)
Incorrect: Your answer is incorrect.
ft
Answers
Step-by-step explanation:
C is the answer of your question
A pair of parallel lines is intersected by a transversal. Select each statement that can be used to show that ∠4 is congruent to ∠6.
Options:
∠4 and ∠6 are vertical angles, so ∠4 is congruent to ∠6.
∠4 and ∠6 are alternate interior angles, so ∠4 is congruent to ∠6.
∠4 and ∠6 are alternate exterior angles, so ∠4 is congruent to ∠6.
∠4 and ∠8 are corresponding angles, and ∠6 and ∠8 are vertical angles, so ∠4 is congruent to ∠6.
∠4 and ∠8 are vertical angles, and ∠6 and ∠8 are corresponding angles, so ∠4 is congruent to ∠6.
PLEASE ANSWER THIS IM GIVING AWAY ALL MY POINTS
Answers
Answer:
Number 3 is the correct answer
Step-by-step explanation:
g assume that the rate of change in the number of names she remebers dn/dt equals 100 minus an amount that is directly proportional to n write a differential equation that epresses this assumption
Answers
This is a first- order direct differential equation.
What's differential equation?Differential equations are fine equations that involve functions and their derivations. These equations describe how the rate of change of one variable affects the rate of change of another variable, and they're used to model a wide variety of natural marvels in fields similar as drugs, engineering, economics, biology, and more.
Given by the question.
Let n be the number of names that the person remembers, and let t be time in units of your picking.
According to the supposition given, the rate of change in the number of names she remembers is commensurable to the number of names she presently remembers. This can be written a
d n / d t = (100 - k n)
where k is the constant of proportionality.
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how many groups of3/4 are in 11/4
Answers
Answer:
Three groups of 3/4 fit in 11/4
Step-by-step explanation:
Three groups of 3/4 would be 9/4, any more groups of 3/4 will exceed 11/4
Answer:
3 groups
Step-by-step explanation:
3, 6, 9, 12. 12 > 11
12 is over 11, and counting by 3’s tells you how many groups of 3/4 are in 11/4. If you move the fraction away for a minute it gets easier!
at a large university, 68% of the students have a laptop, while only 43% of professors have one. let p hat subscript s and p hat subscript p be the sample proportions of students and professors, respectively, who have a laptop. suppose 56 students and 31 professors from this university are selected at random and asked if they have a laptop. which of the following is the correct calculation and interpretation of the standard deviation of the sampling distribution of p hat subscript s baseline minus p hat subscript p ?
Answers
The correct calculation of the standard deviation of the sampling distribution of p_hat subscript s - p_hat subscript p is 0.0934.
What do you mean by standard deviation?
In statistics, Standard deviation is a measure of the variation of a set of values.
σ = standard deviation of population
N = number of observation of population
X = mean
μ = population mean
We are given that;
Percentage of students with laptop=68%
Percentage of professors with laptop=43%
p_s = 0.68 and p_p = 0.43.
Now,
The formula for the standard deviation of the sampling distribution of the difference between two sample proportions is:
sqrt[(p_s * (1 - p_s) / n_s) + (p_p * (1 - p_p) / n_p)]
where p_s and p_p are the population proportions of students and professors who have a laptop, respectively, n_s and n_p are the sample sizes of students and professors, respectively.
We are also given that 56 students and 31 professors were selected at random and asked if they have a laptop. Therefore, n_s = 56 and n_p = 31.
Substituting these values into the formula, we get:
sqrt[(0.68 * (1 - 0.68) / 56) + (0.43 * (1 - 0.43) / 31)]
sqrt[0.00367143 + 0.00505484]
= sqrt(0.00872627)
= 0.0934 (rounded to four decimal places)
Therefore, by standard deviation the answer will be 0.0934.
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I’ll give brainlest so pls help ;-;
Answers
Answer:
-3
Step-by-step explanation:
1+-3= -2
5-4= 1
-2+1= -3 i think
Answer:
7
Step-by-step explanation:
Hello There!
For this one all we have to do is plug in the values
Remember l l means absolute value
l -5 - 4 l - l 1 + (-3)l
-5-4=-9
l-9l the absolute value of -9 is 9
1-(-3)=-2
l-2l the absolute value of -2 is 2
we´re left with
9-2
9-2=7
so the answer to the problem is 7
A spinner with 8 equally sized slices has 8 yellow slices. The dial is spun and stops on a slice at random. What is the probability that the dial stops on a yellow slice?
Answers
Answer: 8/8
Step-by-step explanation:
It's eight yellow slices out of a total of eight slices. So it's impossible to get anything other than yellow.
enter the value 2³ - 16 divided by 2 + 5²
Answers
Answer: 2^3 - 16 : 2 + 5^2 = 25/1 = 25
Step-by-step explanation:
Exponentiation: 2 ^ 3 = 8Divide: 16 / 2 = 8Subtract: the result of step No. 1 - the result of step No. 2 = 8 - 8 = 0Exponentiation: 5 ^ 2 = 25Add: the result of step No. 3 + the result of step No. 4 = 0 + 25 = 25
A toy rocket is shot up into the air and this is modeled by the function: y=-16x^2+145x+7, Find the vertex and find the zeros of the equation and state whether or not each one is realistic. Show or explain how you found your answer.
Answers
Answer:
I can only tell you the vertex because I don't have a graph to find the zeros. Unless you made a typo in the equation, the vertex is (4.53, 992.18)
Step-by-step explanation:
To find the vertex when the equation is in standard form, you have to find H and K by using the formula -b/2a. Then once you get the answer, you put that number into where the x's are and solve that, and the total will be the K. After that you just put into vertex form which is f(x)=-16(x-4.53)^2+ 992.18
The H factor will always be opposite of what the sign says in the parenthesis, so the vertex is (4.53, 992.18)
Answer:
Vertex (4.53 , 335.33) Zeroes are -0.048 and 9.11
Step-by-step explanation:
For find the Vertex also know as the turning point/stationary point and the zeros also known as the x-intercepts of the equation we equate the equation to its complete square form which is
\(y=a(x-h)^2+k\)
where (h,k) are the vertex point of the equation h corresponds to x coordinate and k corresponds to the y coordinate and a determines whether the graph is a maximum or a minimum. To find whether the graph is a maximum value of a should be < 0 which and if a's value is > 0 then the graph is a minimum. In short
\(a<0\) maximum (n shaped)
\(a > 0\) minimum (u shaped
so now we equate, that is
\(-16x^2+145x+7=a(x-h)^2+k\)
\(-16x^2+145x+7=ax^2-2ahx+ah^2+k\)
now we compare the coefficients of x^2
-\(-16=a\)
now we compare the coefficients of x
\(145=-2ah\)
\(145=-2(-16)h\)
\(145=32h\)
\(4.53=h\)
now we compare constants
\(7=ah^2+k\)
\(7=(-16)(4.53)^2+k\)
\(7=-328.33+k\)
\(335.33=k\)
so now we the value of (h , k) that is (4.53 , 335.33)
that is our vertex and since the value of a is less than zero the graph is a maximum.
Now for the zeroes/x-intercepts
we need to find where the graph cuts the x-axis which means if the specific point where the curve cuts the x-axis that point's y coordinate should be zero or more like \((x,0)\).
and thus this point lies on the curve/equation as well because it satisfies it which means we can put this point into our given equation
\(y=-16x^2+145x+7\) when we put \((x,0)\) in it y becomes 0 thus changing it to
\(-16x^2+145x+7=0\)
this becomes a simple quadratic equation where we can use the quadratic formula
\(x=-145\) ± \(\frac{\sqrt{(145)^2-4(-16)(7)} }{-32}\)
we get two values of x
\(x=\frac{-145+146.54}{-32}\) and \(x=-\frac{-145-146.54}{-32}\)
\(x=-0.048\) and \(x=9.11\) since there 2 values of x means the curve cuts the x-axis at two points we can even confirm our answers by using the desmos graphing calculator as well to check our vertex and zeroes.
Using lexicographic ordering of 4-sets, select the two inequalities that are both correct. O {2,1,4,5}<{1,16,67,4} {1,5,7,8}<{1,6,67,8} O {2,1,4,5}>{1,16,67,4} {1,5,7,8}<{1,6,67,8} O{2,1,4,5}<{1,16,67,4} {1,5,7,8}>{1,6,67,8} O {2,1,4,5}>{1,16,67,4} {1,5,7,8}>{1,6,67,8}
Answers
Using lexicographic ordering of 4-sets, the two correct inequalities are {2,1,4,5}<{1,16,67,4} {1,5,7,8}<{1,6,67,8}
Lexicographic ordering, also known as a dictionary or alphabetical order, is a method of comparing sequences of elements. In this case, we are comparing 4-sets. When comparing two sets, we start by comparing the first elements of each set. If they are equal, we proceed to compare the second element, and so on until we find a pair of elements that are different. The set with the smaller element at that position is considered smaller in lexicographic order.
1. In the first inequality, {2,1,4,5}<{1,16,67,4}, we can see that the first element of the first set (2) is greater than the first element of the second set (1). Therefore, the second set is smaller in lexicographic order, making the inequality correct.
2. In the second inequality, {1,5,7,8}<{1,6,67,8}, the first elements are equal (1). So, we proceed to compare the second elements. The second element of the first set (5) is smaller than the second element of the second set (6), so the first set is smaller in lexicographic order, making the inequality correct.
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HARDEST QUESTION EVER! WHAT IS 2+2=? NOBODY CAN GET THIS
Answers
Answer:
4
Step-by-step explanation:
its 4 duh
Answer:
Step-by-step explanation:
2 + 2 = 4
We know that d equals the dollar amount needed to buy one hundred seventy-six tickets.
Fill in the proportion using the ratios highlighted in the table.
Answers
The value to fill in the proportion using the ratios highlighted in the table is 110
How to fill in the proportion using the ratios highlighted in the table.?From the question, we have the following parameters that can be used in our computation:
The table
On the table, we have the following values
Dollars 5 10 15 20 30 65 80 d
Ticket 8 16 24 32 48 104 128 176
From the question, we understand that the table is in proportions
This means that we can use the following ratio
5 : 8 = d : 176
Express as fraction
d/176 = 5/8
So, we have
d = 5/8 * 176
Evaluate the products
d = 110
Hence, the value of d is 110
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what fraction of a semicircle is an angle that measures 11pi/18 radians? express your answer as a fraction in simplest terms
Answers
Check the picture below.
let's recall that, the arc made from 0 to π is just half a circle or namely a semi-circle, so any fraction of π refers to that arc
\(\cfrac{11\pi }{18}\qquad \textit{really means}\qquad \cfrac{11}{18}\qquad \textit{of that semi-circle}\)
Add .003, 265.8, 83.04
and 1972
Answers
Explanation: Calculator
8 pencils for$2.24 i need help with my math can some one help me with it
Answers
Answer:
8 x 2.24 = 17.92
Pls mark me brainliest
Are you trying to find the price of 1 pencils?
If Yes The Answer is below.
Answer:
0.28
Step-by-step explanation:
To find the price of 1 pencils.
Divide 2.24 by 8 which gives you 0.28
Therefore the price of 1 pencils is 0.28
Part 1: Write the equation of the graphed line in slope intercept (y= mx + b).
Answers
Answer:
1. y = 2x - 5
2. y = (-1/3)x
3. y = -4
4. y = (-3/4)x + 7
5. x = 6
6. y = -3x - 8
Step-by-step explanation:
1.
Point 1: (0, -5) Point 2: (-1, -7)
(x₁, y₁) (x₂, y₂)
y₂ - y₁ -7 - (-5) -7 + 5 -2
m = ------------ = ----------- = ---------- = ------ = 2
x₂ - x₁ -1 - 0 -1 -1
y - y₁ = m (x - x₁)
y - (-5) = 2(x - 0)
y + 5 = 2x - 0
-5 -5
y = 2x - 5
----------------------------------------------------------------------------------------------------------
2.
Point 1: (0, 0) Point 2: (3, -1)
(x₁, y₁) (x₂, y₂)
y₂ - y₁ -1 - 0 -1
m = ------------ = ----------- = ----------
x₂ - x₁ 3 - 0 3
y - y₁ = m (x - x₁)
y - (0) = (-1/3)(x - 0)
y - 0 = (-1/3)x - 0
-0 -0
y = (-1/3)x
----------------------------------------------------------------------------------------------------------
3.
Point 1: (0, -4) Point 2: (-5, -4)
(x₁, y₁) (x₂, y₂)
y₂ - y₁ -4 - (-4) -4 + 4 0
m = ------------ = ----------- = ---------- = ------ = 0
x₂ - x₁ -5 - 0 -5 -5
y = -4
----------------------------------------------------------------------------------------------------------
4.
Point 1: (0, 7) Point 2: (4, 4)
(x₁, y₁) (x₂, y₂)
y₂ - y₁ 4 - 7 -3
m = ------------ = ----------- = ----------
x₂ - x₁ 4 - 0 4
y - y₁ = m (x - x₁)
y - 7 = (-3/4)(x - 0)
y - 7 = (-3/4)x - 0
+7 +7
y = (-3/4)x + 7
----------------------------------------------------------------------------------------------------------
5.
Point 1: (6, 0) Point 2: (6, 3)
(x₁, y₁) (x₂, y₂)
y₂ - y₁ 3 - 0 3
m = ------------ = ----------- = ---------- = undefined
x₂ - x₁ 6 - 6 0
x = 6
----------------------------------------------------------------------------------------------------------
6.
Point 1: (0, -8) Point 2: (-4, 4)
(x₁, y₁) (x₂, y₂)
y₂ - y₁ 4 - (-8) 4 + 8 12
m = ------------ = ----------- = ---------- = ------ = -3
x₂ - x₁ -4 - 0 -4 -4
y - y₁ = m (x - x₁)
y - (-8) = -3(x - 0)
y + 8 = -3x - 0
-8 -8
y = -3x - 8
I hope this helps!
drf6tgygtfrderftgyhujhy6gt5fr4derftgyhujhygtfrde 2+2
Answers
Answer:
bhbhjubvuvgvguvgyvgk 4
Step-by-step explanation:
bibivxdteuhdry7uhivgd5guy
Answer:
wedfhuaewojflhdisvkldavjwifwjfsjfksvsbvskvnbhkcjwjbcsvjb 2+2=4
Step-by-step explanation:
Pls help me I will mark at brainist
Answers
answer:
4
9
0
Step-by-step explanation:
a) 4
b) 9 - 0 = 9
c) 7
A hotel costs $100 per night plus a $35 hotel fee. If George has $500, what is the maximum number of nights he could stay
Answers
Answer:
4 nights
Step-by-step explanation:
use the equation
y = 100x + 35
substitute y for 500
500 = 100x + 35
solve for x
465 = 100x
x = 4.65
so based on the situation he could only stay 4 nights
need help please and I have more questions on the same topic like this .
Answers
Step by step:
There are 3 buttons that have a length of 3/4 inches.
3/4 x 3 = 2 1/4
Answer 1 1/4
Step-by-step explanation:
You can get this by finding 3/4 on the line plot and counting the x's. Then you must add the 3 x's which means 3 of 3/4 and sum is your answer. Be sure to change improper to proper fraction. 9/4 to 1 1/4.
Norma and Jane go to the store to buy stocking stuffers. Norma spends $8 more than Jane. Total, Norma and Jane spend $52. How much did each girl spend?
Answers
Answer:
Norma spent $30
Jane spent $22
Draw the net and calculate the surface area .
Answers
Hello!
surface area
= 2(4 x 2) + 2(12 x 4) + 2(12 x 2)
= 160cm²
A single die is rolled. Find the odds in favor of rolling a number greater than 2.
The odds in favor of rolling a number greater than 2 are
(Simplify your answers.)
Answers
Answer:
2/3
Step-by-step explanation:
1 and 2 are taken away, therefore you have 3, 4, 5, and 6 left as options to roll. So the answer is 4/6 since there's 4 numbers, but simplified it's 2/3.
Answer:
There are six possible outcomes when rolling a die, each of which is equally likely. Of these six outcomes, three are greater than 2 (3, 4, 5) and three are not (1, 2, 6). Therefore, the odds in favor of rolling a number greater than 2 are 3 to 3, or simply 1 to 1. Alternatively, we could express this as a probability: the probability of rolling a number greater than 2 is 3/6, or 1/2, since there are three favorable outcomes out of a total of six possible outcomes.
Step-by-step explanation:
What is the 15% of 20
Answers
Answer:
Step-by-step explanation:
15% of 20 is 3