Answers
Answer:
72 km/hr
Step-by-step explanation:
The division of fractions is carried out in any of the usual ways. The ratio of units multiplies the result.
__
\(\dfrac{20\div1000\text{ km}}{1\div1000\text{ hr}}=\dfrac{20}{1000}\div\dfrac{1}{3600}\cdot\dfrac{\text{km}}{\text{hr}}=\dfrac{20}{1000}\cdot\dfrac{3600}{1}\cdot\dfrac{\text{km}}{\text{hr}}\\\\=\boxed{72\ \dfrac{\text{km}}{\text{hr}}}\)
_____
Additional comment
The multiplication of fractions is shown here using the "invert and multiply" method. This makes use of the fact that division is the same as multiplication by the reciprocal.
Related Questions
a man bought an item for 5000.00 and sold it at a loss of 25%. how much did he sell it
Answers
Answer:
25% of 5000 is 1250, so the man sold it for 3750
Step-by-step explanation:
Answer:a man bought an item for 5000.00 and sold it at a loss of 25%. how much did he sell it
answer:
3750?
how i did it:
not sure if this is 100% correct but i did 25% of 5000 which would be 1250 and then did 5000-1250 which would be £3750
Step-by-step explanation:
Please mark me as brainliest .Thank you so much
Billy is saving up to buy a new cell phone he has $45 right now and he can save $6 each month if billy wants to buy a new phone that costs $63 how many months does he have to save up
Answers
for what values of k does the quadratic equation (k 4)x -3kx-4(k -2) = 0 have two roots which differ by 1?
Answers
According to the quadratic equation the solution of k is 48 ± 8√26.
In math the term called quadratic equation is known as the polynomial equation whose highest degree is two
As we all know that the value of the quadratic equation is written as,
=> (k - 4)x² - 3kx - 4(k -2) = 0.
Now we have identified that the given equation is in the form of ax² + bx + c = 0.
Here we have also identified the value of a = k - 4, b = -3k and c = 4(k-2)
And then we have to use the quadratic formula to identify the value of k,
Here it can be written as.
=> (-3k)² - (4 x (k - 4) x 4(k-2))
When we expand the term then we get,
=> 9k² - (16k² - 32k - 64k + 128)
When we simplify this one then we get
=> -5k² + 96k - 128 = 0
Here we have to factorize the expression then we get the value of k as 48 ± 8√26.
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If a 9-foot flagpole casts a 6-foot shadow, how tall is the woman who casts a 4-foot shadow?
A. 7ft
B. 6 ft
C. 5.5 ft
D. 5ft
PLEASE ANSWER! AND EXPLAIN UR ANSWER CAUSE MY STAAR IS COMING UP! NO LINKS THIS IS SERIOUS!
Answers
Jim builds a robot that travels no more than 10 feet per minute. Graph the inequality showing the relationship between the distance traveled and the time elapsed.
Is it possible for the robot to travel 27 feet in 3 minutes?
Answers
Answer:
no robot can travel 27 feet in 3 minutes
Step-by-step explanation:
The lines given by the equations y = 2x and y = 0.5x are _____.
A. perpendicular
B. neither perpendicular nor parallel
C. parallel
Answers
Answer:
B
Step-by-step explanation:
Select the statement that can be represented by -10 dollars.
Answers
organize the following polynomial expressions from least to greatest based on their degree:
Answers
The polynomial expressions organized from least to greatest based on their degree are as follows: 1.Constant term 2.Linear term 3.Quadratic term 4.Cubic term 5.Higher degree terms (if present)
Constant term (degree 0): This is a polynomial with no variables, such as 5 or -2.
Linear term (degree 1): This is a polynomial with one variable raised to the first power, such as 3x or -2y.
Quadratic term (degree 2): This is a polynomial with one variable raised to the second power, such as 4x² or -3y².
Cubic term (degree 3): This is a polynomial with one variable raised to the third power, such as 2x³ or -5y³.
Higher degree terms: These include polynomials with variables raised to powers greater than 3, such as 2x⁴ or -6y⁵.
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A box of facial tissues is 22cm by 10.5 cm by 8cm. How much cardboard is on the outside surface?
Answers
Answer:
1848 cm
Step-by-step explanation:
You would multiply 22 by 10.5 by 8 centimeters which would equal 1848 centimeters.
Please answer the following question for 85 points.
Answers
Answer:
188.4 cm²
Step-by-step explanation:
Surface area of rectangles :-
A = 15cm * 5 cm * 2 A = 150 cm²Surface area of triangles :-
A = 2 * 1/2 * 4cm * 4.6 cm A = 18.4 cm²Surface area of middle rectangle :-
A = 4cm * 5cm A = 20 cm²Total Area :-
A = ( 150 + 18.4 + 20 ) cm²A = 188.4 cm²Answer:
Solution given:
Total surface area of triangular prism=
area of two triangle +2*area of rectangle+area of base
=2*½*4*4.6+2*15*5+15*4
=228.4cm²
The area of triangular prism=228.4cm²
Mariano is standing at the top of a hill when he kicks a soccer ball up into the air. The height of the hill is h feet, and the ball is kicked with an initial velocity of v feet per second. The height of the ball above the bottom of the hill after t seconds is given by the polynomial −16t2 + vt + h. Find the height of the ball after 2 seconds if it was kicked from the top of a 20 foot tall hill at 72 feet per second.
Answers
Answer:
100feet
Step-by-step explanation:
-16(2)^2+72(2)+20
-16*4+144+20
-64+144+20
100feet
What is the surface area of the sphere in terms of pie?
(Answer only with right answers no links or you’ll be reported)
Answers
Answer:A
Step-by-step explanation:
because A= pi r2
A= pi 5 two
A=25 pi
What is the percentage of 16/5
Answers
Answer:
The percentage value for 16/5 is 320%.
Step-by-step explanation:
hope i helped:)
Answer:
320%Step-by-step explanation:
If you need to find the percentage of a fraction, simply multiply the fraction by 100 to get your answer in percentage form.
=> 16/5 x 100=> 16 x 20=> 320Hence, the percentage of 16/5 is 320%.
4. 40% percent of 295 students say they do not like homework. How many students like homework?
Answers
Answer:
118 Students hate homework but 177 students like homework.
Step-by-step explanation:
The answer is 177 because 40% of 295 is 118 and 295 minus 118 is 177.
P.S Can I have brainliest?
Meredith found the following partial containers of detergent in the basement: 12 quart, 114 gallons, and 34 gallon. how many quarts of detergent did meredith find in all?
Answers
Quarts of detergent 1208
First, we convert each unit to its pint equivalent.
1 gallon =eight US Pint
114 gallons =114 X eight =912 Pint
34 gallon =34 X 8 =272 Pint
further, 1 quart =2 Pint
12 quart = 12 X 2 Pint =24 Pint
including the three values
912+272+24=1208 Pint
therefore, Meredith will want 1,208 Pint boxes.
The unitary technique is a way of solving trouble by way of first finding the fee of a single unit, and then finding the essential value with the aid of multiplying the unmarried unit price.
The system of the unitary technique is to locate the fee of an unmarried unit after which multiply the fee of a single unit to a wide variety of devices to get the vital fee.
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The midpoint of AB is M(3, 1). If the coordinates of A are (1, -1), what are the
coordinates of B?
Answers
Answer:
(5,3)
Step-by-step explanation:
Kelly is knitting a scarf for her brother. It took her 1/5 hour to knit 2/5 foot of the scarf. How fast is Kelly’s knitting speed, in feet per hour?
You help me I help you!
Answers
Answer: 9/8 feet per hour fast is Kelly's knitting speed
Step-by-step explanation:
Unit rate defined as the rates are expressed as a quantity 1 such as 4 meters per second or 4 miles per hour.
As per the statement:
Kelly is knitting a scarf for her brother. it took her 1/3 hour to knit 3/8 foot of the scarf.
She took /3 hours to knit 3/8 foot of the scarf.
Therefore, 9/8 feet per hour fast is Kelly's knitting speed.
Hope I helped!
How do you decide if a decimal is a rational number?
Answers
what is the probability that a randomly selected person would be a protestant and at the same time bea democrat or a republican?
Answers
The probability of picking a red ball is 2/3.
As given in the student question,
The probability that a randomly selected person would be a protestant and at the same time be a democrat or a republican is not given in the problem statement.
Hence, it cannot be determined without further information.
Probability is the branch of mathematics that deals with the study of uncertainty.
It provides a framework for analyzing random events that occur in the real world.
Probability helps us to estimate the likelihood of a particular event occurring. It helps us to make informed decisions when faced with uncertain outcomes.
It plays a critical role in many fields such as science, engineering, economics, and finance.
Probability formula:
The probability of an event is calculated by dividing the number of favorable outcomes by the total number of outcomes.
The formula for probability is given by:
P (A) = Number of favorable outcomes/ Total number of outcomes
where P (A) represents the probability of event A.
Example:
Suppose we have a bag containing 10 red balls and 5 blue balls.
The total number of outcomes = 10 + 5 = 15
The number of favorable outcomes = 10P (Red ball) = 10/15 = 2/3
Therefore, the probability of picking a red ball is 2/3.
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Ms. Cross’s fifth-grade class was planning a bake sale to make money for new equipment for the school grounds. Maia said, “Let’s all bring some cookies to sell.”
Jared put up his hand, “What if we sold bread? It is something almost everyone likes and we could make a variety of kinds.”
Josie added, “Why don’t we bring different breads that our families enjoy?”
Ms. Cross said, “What a great idea! You could each choose bread you would like to make. Some of you may want to work in pairs or teams along with an adult to help with the baking. Wash all the equipment you use so it will be sanitary.”
Sophia said, “This is an important project, and our project has a better chance to succeed if we choose a good location.”
Juan suggested setting up a table in front of the big grocery store near the school. The class started making plans. Because there would be customers, everyone could work a one-hour shift as a salesperson.
Ms. Cross reminded students that they would have to set a price for their breads and mark the prices on them, so Maddie suggested that a committee go to grocery stores to take notes about the cost of bread. Another committee could find a long table, and other students were needed to get cards and markers to use for labeling.
Jake said, “Are we sure we want all this work?”
Tim said, “Of course we do! We need new soccer balls and other things too, and this is the only way we’ll get them. The exertion will make us tired, but it will be worth it.”
So they all agreed to help. Everyone got busy checking recipes for what they needed for ingredients. Since they would need advice on some things, they had to enlist relatives to help them.
Liane loved the mantou, or steamed buns, that her grandmother learned to make in China before coming to America. Her grandmother offered to help her make a batch early Saturday morning so they would be fresh. When Liane got to her grandmother’s house, the dough of water, a little sugar, yeast, and flour was mixed and rising. The yeast in the dough would make it rise. Grandmother told her to punch the dough down. Then they covered it and let it rise again. After about 20 minutes, Grandmother showed Liane how to knead the dough and shape it into rolls. They boiled water and placed the rolls in the steamer. In 10 minutes, the first batch of buns was cooked. They looked perfect, and Liane was proud of them.
When Liane got to the bake sale, several classmates were already there. Mauricio showed her the Cuban bread his grandfather had helped him make. He had started it with yeast, warm water, and flour like the steamed buns. The dough had to rest in the refrigerator for 24 hours. On Saturday morning, they added other ingredients to the “starter.” They kneaded it, let it rise, and formed the dough into loaves. The loaves were baked, not steamed.
Carissa showed the Italian focaccia bread she made with her grandmother’s help. It had similar ingredients to the other breads but more spices, including garlic and basil and some cheese. Erik brought crusty rye sourdough bread. His mother helped him make it the way her mother from Germany had taught her. Wendy made scones with her mother, whose family came from England in the seventeenth century. Scones are rich biscuits made without yeast.
Jay brought some chapati, a flatbread he learned about in India last summer. Patrick brought his mother’s Irish soda bread with caraway seeds. David and Sarah brought challah, a bread traditionally served on Jewish holidays. With help from Sarah’s mom, David and Sarah rolled the dough into “snakes” and braided them. Jake participated by bringing a loaf of whole wheat bread his father had helped him make and several dozen homemade rolls.
The bake sale was a huge success! The breads sold quickly, and the class made $370 for new equipment. Ms. Cross observed that bread is an important part of cultures around the world.
This question has two parts. First, answer part A. Then, answer part B.
Part A
Which statement best summarizes the theme of the text?
A.
Most bread contains flour and water.
B.
A successful project needs help from parents.
C.
A bake sale featuring bread will always be a success.
D.
People from different countries have things in common.
Part B
Which sentence from the text best supports your answer in part A?
A.
"Ms. Cross’s fifth-grade class was planning a bake sale to make money for new equipment for the school grounds.”
B.
“Another committee could find a long table, and other students were needed to get cards and markers to use for labeling.”
C.
“With help from Sarah’s mom, David and Sarah rolled the dough into ‘snakes’ and braided them.”
D.
“Ms. Cross observed that bread is an important part of cultures around the world.”
Answers
Answer:
The answer is D<3
Step-by-step explanation:
Rationalize the denominator
Answers
Answer:
\(\huge\color{purple}\boxed{\colorbox{black}{Answer♡}}\)
\( \frac{2}{ \sqrt{7} - 1} \\ = > \frac{2}{ \sqrt{7} - 1} \times \frac{ \sqrt{7} + 1}{ \sqrt{7} + 1} \\ = > \frac{2( \sqrt{7} + 1)}{ \sqrt{7} {}^{2} - 1 {}^{2} } \\ = > \frac{2 \sqrt{7} + 2}{7 - 1} \\ = > \frac{2( \sqrt{7} + 1)}{6} \\ = > \frac{ \sqrt{7} + 1}{3} \)
———————————————\(\color{red}\boxed{\colorbox{skyblue}{Additional Information~}}\)
Here..Step 3 contains the algebraic identity( a + b ) × ( a - b ) = a² - b²
Also.. in the very last step ,we earlier had 2 multiplied to rest of the numerator and 6 in the denominator..
we simply divided both the numerator as well as denominator by 2 and hence got the result obtained.
hope helpful~
~Be Brainly!~Exhausted Zombie
en un zoológico hay aves (de dos patas) y bestias (de cuatro patas). si el zoológico contiene 60 cabezas y 200 patas, ¿cuántas aves y bestias viven en él?
Answers
Este es un problema clásico de álgebra lineal que se puede resolver mediante un sistema de ecuaciones lineales.
Si definimos "a" como el número de aves y "b" como el número de bestias, entonces podemos plantear las siguientes ecuaciones:
a + b = 60 (porque el número total de animales es de 60)
2a + 4b = 200 (porque el número total de patas es de 200)
Podemos resolver este sistema de ecuaciones de varias maneras, pero aquí hay un ejemplo de cómo hacerlo por el método de sustitución:
Despejar "a" en la primera ecuación:
a = 60 - b
Sustituir "a" en la segunda ecuación:
2(60 - b) + 4b = 200
Resolver para "b":
120 - 2b + 4b = 200
2b = 80
b = 40
Sustituir "b" en la primera ecuación para encontrar "a":
a + 40 = 60
a = 20
Por lo tanto, hay 20 aves y 40 bestias en el zoológico.
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A teacher purchased 20 calculators and 10 measuring
tapes for her class and paid $495. Later, she realized
that she didn't order enough supplies. She placed
another order of 8 calculators and 1 measuring tape
and paid $178.50.
Write a system that can be used to model this situation
Answers
Answer:
pog
Step-by-step explanation:
Please help I don’t get it
Answers
Answer:
the answer is y= 3/4x+2
Step-by-step explanation:
the y intercept is your constant term, which is 2. Your slope is how much the line is incresing with every x. Hope this helped xxx
Y-y1 = m(X-x1)
Y-2 = -3/4 (X-0)
Y-2 = -3/4x
Y = -3/4x + 2
please help meh on this for points and brainliest
Answers
Answer:
13 is two and two thirds of four and seven eighths.
Step-by-step explanation:
To solve this, all you need to do is divide 13 by 2 and two thirds. Let's do it:
\(13 \div 2\frac{2}{3}\\= 13 \div \frac{8}{3}\\= 13 \times \frac{3}{8}\\= \frac{13 \times 3}{8}\\= \frac{39}{8}\\= 4\frac{7}{8}\)
Answer:
4.875
Step-by-step explanation:
2 2/3=266.666666666667
266.666666666667% of 4.875 = 13
43. Amino acids are named based on the identity of 44. A mutation in the primary sequence causes a disruption in protein folding and results in hemoglobin S or sickle-shaped red blood cells. What is t
Answers
The name of the condition that results from a mutation in the primary sequence, causing a disruption in protein folding and resulting in sickle-shaped red blood cells is called sickle cell anemia.
The sickle cell anemia results from a single amino acid mutation in the hemoglobin protein. Instead of glutamic acid, valine is present. This change causes the protein to fold differently than it should. The protein fiber becomes deformed and sticky, causing the red blood cells to become sticky and rigid.
The sickle-shaped red blood cells become lodged in small capillaries, leading to tissue damage, anemia, and pain. The name of the condition is sickle cell anemia, and it is a recessive genetic disorder. People who inherit one copy of the mutated hemoglobin gene are carriers of the disease, while people who inherit two copies of the mutated gene will have sickle cell anemia.
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Complete question is:
A mutation in the primary sequence causes a disruption in protein folding and results in hemoglobin S or sickle-shaped red blood cells. What is this condition called?
what is the value of this expression when c=4 c^3/2
Answers
Answer:
8
Step-by-step explanation:
c ^ 3/2
Let c = 4
4 ^ 3/2
Rewriting 4 as 2^2
2 ^2 ^3/2
We know that a^b^c = a^(b*c)
2 ^(2*3/2)
2 ^3
8
the right answer is 8.
please see the attached picture for full solution
Hope it helps
Good luck on your assignment....
following definitions of the functions f: ZZ and g: ZZ, give fofog and gogof from the domain (-1, 2, 4] to Z. (1 point for each composite function) f(x) = (x + 1)² g(x)=x-2
Answers
Let's define the functions given below:f(x) = (x + 1)²g(x) = x - 2Now we have to find fofog and gogof for the domain (-1, 2, 4] to Z.fofog
First, we will find g(x), then f(x), and then substitute the value of g(x) in place of x in f(x).This can be written as follows:f(g(x)) = f(x - 2) = [(x - 2) + 1]^2 = (x - 1)^2
Now, we have to substitute the domain (-1, 2, 4] one by one:(-1 - 2 - 4]For x = -1, f(g(-1)) = (-1 - 1)^2 = 4For x = 2, f(g(2)) = (2 - 1)^2 = 1For x = 4, f(g(4)) = (4 - 1)^2 = 9Therefore, fofog for the domain (-1, 2, 4] to Z is given by {(x, fofog(x)) : x ∈ (-1, 2, 4], fofog(x) ∈ {4, 1, 9}}gogof
For this, we will find f(x), then g(x), and then substitute the value of f(x) in place of x in g(x).This can be written as follows:g(f(x)) = g((x + 1)²) = (x + 1)² - 2
Now, we have to substitute the domain (-1, 2, 4] one by one:(-1 - 2 - 4]For x = -1, g(f(-1)) = (-1 + 1)^2 - 2 = -2For x = 2, g(f(2)) = (2 + 1)^2 - 2 = 9For x = 4, g(f(4)) = (4 + 1)^2 - 2 = 22
Therefore, gogof for the domain (-1, 2, 4] to Z is given by {(x, gogof(x)) : x ∈ (-1, 2, 4], gogof(x) ∈ {-2, 9, 22}}.Thus, the composite functions fofog and gogof have been calculated with the domain (-1, 2, 4] to Z.
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use perpendicular bisectors i can use perpendicular bisectors of triangles to solve problems. find each measure. 1. fg
Answers
The measure of FG is 28 units.
From the image we can say,
ΔEFG and ΔEDG both of them have a side of length 13.
As per the image, ∠EGF=∠EGD=90°.
As in ΔEFD EF=ED, so ∠EDF=∠EFD
So, ΔEFG and ΔEDG follow ASA congruency.
For that reason, the corresponding parts are equal, so FG = DG.
Or we can say EG is the perpendicular bisector, FG=GD.
⇒5x-17=3x+1.
⇒5x -3x = 1+17.
⇒2x=18
⇒x=\(\frac{18}{2}\)
⇒x = 9.
As FG = 5x-17 = 5×9 - 17=45-17=28.
Hence, the measure of FG is 28.
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The complete question is, "Use Perpendicular Bisectors (you can use perpendicular bisectors of triangles to solve problems.). Find measure, FG. See the attached image"
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Which of the following sets of parametric equations represents (x - 1)2 + (y + 4)2 = 9?
Answers
the sets of parametric equation that represents (x-1)²+(y+ 4)² = 9 is:
x = 1 + 3 cosθ
y = -4 + 3 sinθ
How to the sets of parametric equation?( x -1)^2 = (r cosθ)^2
x - 1 = r cosθ
= 3 cosθ
x = 1 + 3 cosθ
y + 4 = 3 sinθ
= y = -4 + 3 sinθ
There, the sets of parametric equation that represents (x-1)²+(y+ 4)² = 9 is:
the sets of parametric equation that represents (x-1)²+(y+ 4)² = 9 is:
x = 1 + 3 cosθ
y = -4 + 3 sinθ
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The question is incomplete, see missing part in the attached image.
