A fire alarm rings 20 times. It pauses for 1 second between rings. Each ring is 3 seconds long. How long does the ringing last? a. 60 seconds b. 79 seconds c. 68 seconds d. 80 seconds
Answers
Answer:79 seconds answer B
Related Questions
what is the awnser to this pls awnser quick
Answers
Answer:
length and width
Step-by-step explanation:
Sample Answer: Make a table with inputs showing the number of bottles of water and outputs showing the total cost of the water. Use 1, 2, 3, and 4 bottles for the inputs. Find the corresponding outputs. Plot the ordered pairs in the table of the form (input,output).
Which instructions did you include in your explanation? Check all that apply.
Identify the input.
Identify the output.
Create a table for four input values.
Plot the points from the table.
Answers
The instructions that you would include in your explanation are:
Identify the output.
Create a table for four input values.
Plot the points from the table.
The instructions to be includedIn the given question, a series of instructions are provided. To properly explain your process, you have to explain how you got the output. There is no need of explaining the input as they are already provided.
Next, you will Show how you created the table and why you created it in that way. Finally, indicate how the points were plotted on the table. An explanation such as this will help anyone to follow through.
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Answer:1 to 2
2 to 4
Step-by-step explanation:
Please Help!! It’s due in 20 minutes!
Answers
Answer:
Hence, 70 people out of 100 who had attained the previous year
Step-by-step explanation:
If this is completely proportional, you'd make the formula
\( \frac{420}{600} = \frac{x}{100} \)
Cross multiply
\(42000 = 600x\)
Then we just divide by 600
\(x = 70\)
Please help
Which of the options show a solution set that is true for the inequality below? Select all that apply.
Answers
Answer: The answer is choice B, C, and D
Step-by-step explanation:
Substitute the largest number in every set to see if it is a solution to the inequality.
Find the lengths and slopes of the diagonals to name the parallelogram. Choose the most specific name. E (-2, -4), F(0, -1), G(-3. 1) H(-5, -2) Note: Be prepared to explain your answer to this type of question on the test using length and slope. a) Rectangle b) Triangle c) Rhombus d) Square ---------------------------------------------------------------------------------------------------------------------------- What would prove the parallelogram PWRS is a rhombus? P(-1, 3), Q(-2, 5), R(0, 4), S(1, 2) a)Length of QR is 2.2 and slope of QR is -2 b) Slope of QR and PS is -2 and Slope of RS and QP is -1/2 c) Length of QS and PR is 4.2 d) Length of QR and PS is 2.2 and Length of RS and QP is 2.2
Answers
Detailed explanation:
The diagonals of the parallelogram must be measured in order to ascertain its name. Let's figure out these numbers:
The slope of the EF is equal to (y2 - y1) / (x2 - x1) = (-1 - (-4)) / (0 - (-2)) = 3 / 2.
Diagonal GH: [(x2 - x1)2 + (y2 - y1)2] is the length of the GH.
= √[(-5 - (-3))² + (-2 - 1)²]
= √[(-2)² + (-3)²]
= √[4 + 9] = √13
Slope of GH is equal to (y2 - y1)/(x2 - x1) = (-2 - 1)/(-5 - (-3)) = -3 / -2 = 3 / 2
Let's examine the outcomes now:
The parallelogram is a rhombus if the lengths of both diagonals are equal (EF = GH) and the slopes of both diagonals are equal (slope of EF = slope of GH).
In our case, EF = GH = √13, and the slopes of EF and GH are both 3/2. Therefore, the parallelogram is a rhombus.
Therefore, the correct answer is c) Rhombus.
For the first question, the most specific name for the parallelogram defined by the coordinates E, F, G, and H is d) Square because the lengths of the sides and the diagonals are equal.
For the second question, the statement that would prove the parallelogram PWRS is a rhombus is d) Length of QR and PS is 2.2 and Length of RS and QP is 2.2, as it shows that all sides of the parallelogram are congruent.
To determine the most specific name for the parallelogram defined by the given coordinates, we need to analyze the properties of the shape based on the lengths and slopes of its diagonals.
Let's analyze each option:
a) Rectangle: In a rectangle, opposite sides are parallel and equal in length.
Diagonals are also congruent.
To determine if the parallelogram is a rectangle, we need to find the lengths of the diagonals.
Using the distance formula, we find that the length of EF is approximately 4.47 units, while the length of GH is approximately 4.24 units.
Since the diagonals are not congruent, the parallelogram is not a rectangle.
b) Triangle: A triangle is a three-sided polygon, which is not applicable to the given parallelogram.
c) Rhombus: In a rhombus, all sides are congruent.
The diagonals of a rhombus are perpendicular bisectors of each other. To determine if the parallelogram is a rhombus, we need to compare the slopes of the diagonals.
The slope of EF is -3/2, while the slope of GH is -3/2.
Since the slopes are equal, and the lengths of the sides are not given, we cannot determine if the parallelogram is a rhombus solely based on the given information.
d) Square: A square is a special type of rectangle and rhombus, where all sides are congruent and all angles are right angles.
Since we cannot determine if the parallelogram is a rhombus, we cannot conclude that it is a square.
In conclusion, based on the given information, we cannot determine the most specific name for the parallelogram defined by the coordinates.
For the second question, to prove that the parallelogram PWRS is a rhombus, we would need to show that the lengths of the sides are congruent and that the diagonals are perpendicular bisectors of each other.
However, based on the given options, we do not have the required information to prove that PWRS is a rhombus.
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study the following sequence: 1 - 1/2, 1 - 1/2, 1 - 1/3, 1 - 1/4, ..., 1 - 1/49, and 1 - 1/50 what is the product of all the terms?
Answers
Answer:
Step-by-step explanation:
MATHEMATICAL ECONOMICS. 1. Differentiate the following functions: (a) f(x) ... consumer's optimization problems in terms of qc and find the demand function for qc. ... An economy satisfies all the conditions for Pareto optimality except for one ... (a) One economic event causing a series of similar events one after the other.
The answer is hidden within this page and within you....
I wish you safety on your travel...
Lots of love for you!~ <3
Please help asap!! image attached.
Answers
Answer: 1 no 2 yes 3 yes 4 yes 5 yes
Step-by-step explanation: you add what the t equal to the number it follows in the end you find your anwser.
Convert to an improper fraction. Type in your answer with the negative in the numerator.
-11 1/3 = ( )/( )
Answers
Answer:
-34/3
Step-by-step explanation:
i used a mixed number to improper fraction calculator
I NEED THIS NOW!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
For each of the figures, write Absolute Value equation in the form
|x−c=d|, where c and d are some numbers, to satisfy the given solutions:
Answers
Please help ,
For each equation, find a value for x that makes the equation true. Use decimal notation if necessary.
a. x ÷ 3=12
x =
b. 2x+3=20
x =
c. 43x=103
x =
d. −4x=−24
x =
e. 2(x−4)=10
x =
f. −0.5x+1.1=−2.9
x =
Answers
b is 8.5
c is 2.3 (not sure)
d is -6
e is 9
f is 1.8
All faces of a bench except the two faces that rest on the ground will be coated with water-resistant paint. The bench is a right prism. What is the total area to be coated with the paint? Show your work.
Answers
Answer:
Step-by-step explanation:
234 is the answer
The total area to be painted is 8,316 square inches.
How to calculate total area?The bench has a rectangular base with dimensions 63 in by 14 in. The height of the bench is 54 in. The two faces that rest on the ground do not need to be coated with paint, so the total area to be coated is the sum of the areas of the four remaining faces.
The area of one of the longer faces is:
63 in × 54 in = 3,402 in²
The area of the other longer face is the same, so the total area of the longer faces is:
2 × 3,402 in² = 6,804 in²
The area of one of the shorter faces is:
14 in × 54 in = 756 in²
The area of the other shorter face is the same, so the total area of the shorter faces is:
2 × 756 in² = 1,512 in²
The total area to be coated with paint is the sum of the areas of the four remaining faces:
6,804 in² + 1,512 in² = 8,316 in²
Therefore, the total area to be coated with paint is 8,316 square inches.
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Please solve QUICKLY
Answers
Answer:
C
Step-by-step explanation:
It isn't B because the point does not start at 600 and it is not A because it shows the entire decrease of the mass in one millennium. The correct answer is c.
QUICK! BRAINLIEST. BUT IT HAS TO HAVE AN EXPLAINATION.
A student needs to decorate a box as part of a project for her history class. A model of the box is shown.
A rectangular prism with dimensions of 24 inches by 15 inches by 3 inches.
What is the surface area of the box?
234 in2
477 in2
720 in2
954 in2
Answers
Answer:
954
Step-by-step explanation:
2×(15×3 + 15×24 + 3×24)
You just follow the formula above
A=2(wl+hl+hw)
=2·(15·24+3·24+3·15)= 954
area = 954
Francisco wants to find the product of 382 trays of apples and the 18 apples that fit in each tray. He decides to find the answer by breaking 18 into equal parts: 9 and 9. He says that if he multiplies 382 by 9 and then multiplies the product by 9 again, he can find the answer.
Will Francisco’s strategy work? Why or why not?
Answers
Answer:
Please mark me the brainliest
Step-by-step explanation:
Yes, Francisco's strategy will work.
Breaking 18 into 9 and 9 means that he is using the distributive property of multiplication, which states that a(b+c) = ab + ac. In this case, he is breaking 18 into 9 and 9, so he can rewrite the product of 382 trays and 18 apples as:
382 trays x (9 apples + 9 apples)
Using the distributive property, this can be expanded as:
(382 trays x 9 apples) + (382 trays x 9 apples)
This simplifies to:
3,438 trays x 9 apples
Which gives the correct answer of 30,942 apples. Therefore, Francisco's strategy works because he correctly applied the distributive property of multiplication to break down the problem into simpler parts.
GIVING BRAINLIEST A relation is
the output (y) values of the relation
the input (x) values of the relation
a set of points that pair input values with output values
x and y values written in the form (x, y)
Answers
Do you want me to give an example of (x,y)?
Pls help! Will give brainliest!!
Answers
Considering area (A) of garden as 30 square feet:
30 = x(2x+7)
Now we need to expand it:
x(2x+7) = 2x^2 + 7x
2x^2 + 7x = 30
Adding this into an Algebra calculator gives us 5/2 or 2.5
So x = 2.5
To prove this:
2(2.5) + 7 = 12
14 * 2.5 = 30
(2x+7) x = 30
you can distribute to make this easier
2x^2 + 7x = 30
you can plug this into quadratic formula by setting the equation =0, so:
2x^2 +7x -30 = 0
where 2x^2 = a
7x = b
and -30 = c
you can plug this into your calculator and get an answer of
X = 2.5
Graph the equation y= -x^2 +10x-21 on the accompanying set of axes. You must plot 5 points including the roots and vertex. Using the graph, determine the vertex of the parabola
Answers
Answer:
The properties of the parabola equation are
Vertex = (-5, -4)
Roots = (-7, 0) and (-3, 0)
Points = (-2, 5) and (-4, -3)
What are parabola equations?
Parabola equations are second-order polynomial equations and they have the form y = ax^2 + bx + c or y = a(x - h)^2 + k
How to plot the graph of the parabola?
The equation is given as
y = x^2 + 10x + 21
Next, we plot the graph on the coordinate plane
On the graph, we can see the following properties
Vertex = (-5, -4)
Roots = (-7, 0) and (-3, 0)
Points = (-2, 5) and (-4, -3)
Step-by-step explanation:
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Answer:
Step-by-step explanation:
Vertex = (-5, -4)
Roots = (-7, 0) and (-3, 0)
Points = (-2, 5) and (-4, -3)
-3 + 6x. Which expression shows the correct factorization?
Here are the ones to pick from
1. -2 + -2 +6 +x
2. 6(-2 +x)
3. 6(-2 +x)
4. -3 (1 - 2x)
Answers
Answer:
Option #4
Step-by-step explanation:
Expand option #4
=-3(1-2x)
=-3 -2x*-3
=-3+6x which is what your original equation was.
Please help me, due soon
Answers
Answer:
B. 21 and 19/25
Step-by-step explanation:
Rewrite the decimal number as a fraction with 1 in the denominator
21.76=21.761
Multiply to remove 2 decimal places. Here, you multiply top and bottom by 102 = 100
21.761×100100=2176100
Find the Greatest Common Factor (GCF) of 2176 and 100, if it exists, and reduce the fraction by dividing both numerator and denominator by GCF = 4,
2176÷4100÷4=54425
Simplify the improper fraction,
=211925
In conclusion,
21.76=211925
Answer: B. 21 and 19/25
Step-by-step explanation:
Simplify the improper fraction,
=211925
In conclusion,
21.76=211925
Please help with this math
Answers
Find the volume of each pyramid. Round to the nearest tenth if necessary.
triangular pyramid: triangle base, 6.1 cm; triangle height, 6.7 cm; pyramid height, 10.4 cm
a
141.7 cm3
b
212.5 cm3
c
53.1 cm3
d
70.8 cm3
Answers
Answer:
The formula for the pyramid’s volume is given by one-third of the product of the area of the base to its height. Such as: Volume = 1/3 x Area of the Base x Height. V = ⅓ A × H. Where V = Volume, A = Area and H = height.
Step-by-step explanation:
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There are about 2.2 pounds in one kilogram. If Allison's bag weighs
19.54 pounds, about how many kilograms does it weigh? Did you multiply
or divide to find your answer?
a. 8.88, divide c. 8.88, multiply
b. 39.08, multiply d. 39.08, divide
Answers
Answer:
8.88
Step-by-step explanation:
...
Help pLEASE! be sure its right!!
Answers
Answer:
i hope it helps
Step-by-step explanation: 24/9
plz give me brainlliest
2, 3, 5, 9, 17, 22, 31, 39
Regina kept track of the points she scored during her team’s first eight basketball games. What is Regina’s mean score?
Responses
A 3939
B 1616
C 3737
D 1313
E 17
Answers
Answer:
Mean = 16
Step-by-step explanation:
MEAN can be find bg the sum of all score divided by the amount of the score.
Mean = total amount / number of amount
Total amount = 2 + 3 + 5 + 9 + 17+ 22 + 31 + 39
= 128
number of amount = 2, 3, 5, 9, 17, 22, 31, 39
= 8
Then we can calculate mean as
Mean = 128/8
Mean = 16
2+3+5+9+17+22+31+39=128
128/8=16
Which points are 3.5 units apart?
(7.5, 1.2) and (7.5, –2.3)
(7.5, –3.5) and (7.5, 3.5)
(7.5, 1.2) and (7.5, 2.3)
(7.5, –3.5) and (7.5, 7)
Answers
Find the missing factor.
(5 + 3) + 8 = 5 + (3 + ? )
Answers
Answer:
8
Step-by-step explanation:
(5 + 3) + 8 = 5 + (3 + ? )
8 + 8 = 5 + (3+x)
16 = 5 +(3+x)
-5. -5
11 = 3+x
-3. -3
8 = x
Or just guess 8 because its addition and it doesn't matter in what they are ordered
Next we calculate the other side which is 8. Now we get the number from the other side which is 16 and subtract 8 which equals 8. Our answer is 8.
To check we insert our answer where the question mark is, and if both sides are equal, then its correct.
Pabalo is training for a race. His goal is to run 8.5 miles over the next 3 days. This distances he ran each day are shown in the table.
Answers
Answer:
He ran a total of 8.439 miles. Over the three days he ran less than he needed to for his goal, he has to run 0.061 more miles to gain his goal
Step-by-step explanation:
simple! add all of the data numbers and you get a total of 8.439 miles. He has to run 8.5 miles but he does not reach that. he has to run 0.061 miles to gain his goal (8.5-8.439) I hope this helps! (got here as soon as possible)
Please state your answer and explain clearly how you got to your answer. Please clarify and be specific. Thank you so much for you help!
Answers
Answer:
D. 1200 gallons
Step-by-step explanation:
Fractions of the total are given, as is the quantity the difference of those fractions represents. These can be used to write an equation to find the total.
SetupLet g represent the total number of gallons of fuel sold. Then the number of gallons of 87-octane sold is 0.50g, and the number of gallons of 89-octane sold is 0.35g. The difference is said to be 180 gallons:
0.50g -0.35g = 180
SolutionCollecting terms gives ...
0.15g = 180
Dividing by the coefficient of g, we find ...
g = 180/0.15 = 1200
The gas station sold 1200 gallons of fuel last weekend.
__
Additional comment
That's 600 gallons of 87-octane; 420 gallons of 89-octane; 120 gallons of 92-octane; and 60 gallons of 99-octane.
Please Answer It Fast
Answers
Answer:
8
Step-by-step explanation:
a clock is
12
11 1
10 2
9 3
8 4
7 5
6
The number horizontally opposite of 4 is 8
Answer:
8
Step-by-step explanation:
8 is the answer
The vertices of figure A are located at (2, 2), (4, 2), (4, 4). The transformation f(x, y) = (½x, ½y+2) transforms figure A into figure B. Which of the following sets of transformations would transform figure B back into figure A?
A dilation by a factor of 2 centered at the origin, followed by a translation down 4 units.
A translation down 4 units, followed by a dilation by a factor of 2 centered at the origin.
A dilation by a factor of ½ centered at the origin, followed by a translation up 2 units.
A dilation by a factor of 2 centered at the origin, followed by a translation down 2 units.
Answers
Answer:
b
Step-by-step explanation:
because its a reasonal answer if you do the math