Answer:
1/6
Step-by-step explanation:
-4/9 * (-3/8) =
= 12/72
= 1/6
Answer:
Step-by-step explanation:
-4/9 x -3/8 = (-4)(-3) / 8x9 = 12 / 72 = 6/36 = 1/6
20 and 21 will give BRAINLIEST
Answer:
20 is 12 1/2
21 is 11 1/5
Step-by-step explanation:
(1 point) A fish tank initially contains 15 liters of pure water. Brine of constant, but unknown, concentration of salt is flowing in at 5 liters per minute. The solution is mixed well and drained at 5 liters per minute. a. Let x be the amount of salt, in grams, in the fish tank after t minutes have elapsed. Find a formula for the rate of change in the amount of salt, dx/dt, in terms of the amount of salt in the solution x and the unknown concentration of incoming brine c. dx grams/minute b. Find a formula for the amount of salt, in grams, after t minutes have elapsed. Your answer should be in terms of c and t. x(t)= grams c. In 10 minutes there are 25 grams of salt in the fish tank. What is the concentration of salt in the incoming brine? C = g/L
Answer:
a. [tex]\dfrac{dx}{dt} = 6\frac{2}{3} \cdot c[/tex]
b. [tex]x(t) = 6\frac{2}{3} \cdot c \cdot t[/tex]
c. [tex]c = \dfrac{3}{8} \ g/L[/tex]
Step-by-step explanation:
a. The volume of water initially in the fish tank = 15 liters
The volume of brine added per minute = 5 liters per minute
The rate at which the mixture is drained = 5 liters per minute
The amount of salt in the fish tank after t minutes = x
Where the volume of water with x grams of salt = 15 liters
dx = (5·c - 5·c/3)×dt = 20/3·c = [tex]6\frac{2}{3} \cdot c \cdot dt[/tex]
[tex]\dfrac{dx}{dt} = 6\frac{2}{3} \cdot c[/tex]
b. The amount of salt, x after t minutes is given by the relation
[tex]\dfrac{dx}{dt} = 6\frac{2}{3} \cdot c[/tex]
[tex]dx = 6\frac{2}{3} \cdot c \cdot dt[/tex]
[tex]x(t) = \int\limits \, dx = \int\limits \left ( 6\frac{2}{3} \cdot c \right) \cdot dt[/tex]
[tex]x(t) = 6\frac{2}{3} \cdot c \cdot t[/tex]
c. Given that in 10 minutes, the amount of salt in the tank = 25 grams, and the volume is 15 liters, we have;
[tex]x(10) = 25 \ grams(15 \ in \ liters) = 6\frac{2}{3} \times c \times 10[/tex]
[tex]6\frac{2}{3} \times c =\dfrac{25 \ grams }{10}[/tex]
[tex]c =\dfrac{25 \ g/L }{10 \times 6\frac{2}{3} } = \dfrac{25 \ g/L}{10 \times \dfrac{20}{3} } =\dfrac{3}{200} \times 25 \ g/L= \dfrac{75}{200} \ g/L = \dfrac{3}{8} \ g/L[/tex]
[tex]c = \dfrac{3}{8} \ g/L[/tex]
Which expression is equivalent to 2(3g – 4) - (8g + 3)?
A 29 -1
B.-29 +5
C. 29 - 7
D. -29 - 11
Answer:
The Answer is D
Step-by-step explanation:
please help im gonna fail ):
Step-by-step explanation:
the answer is the f^-2(x)=2x+2
over
4
Answer:
the last one
Step-by-step explanation:
do you need an explanation?
what is the area of this quadrilateral
giving brainliest
Answer:
A.
Step-by-step explanation:
Area of triangle is the length*width/2 => 4*4/2=8
For the 2nd triangle, we can separate it into two right triangles by cutting it down the middle. We can find the width of one triangle by taking the base of the first one we worked with and divide it by 2. 4/2 is 2. Multiply this by 3 to get the area, and divide by 2 again. 2*3/2=3. 3
So our answer is 8+3+3=14.
This quadrilateral is separated into two triangles.
[tex]\sf area \ of \ triangle = \dfrac{1}{2} * base * height[/tex]
[tex]\hookrightarrow \sf \dfrac{1}{2} * 4 * 4 +\dfrac{1}{2} *4 * 3[/tex]
[tex]\hookrightarrow \sf14 \ cm^2[/tex]
67% of students in 7th grade claim to brush their teeth twice a day. If there are
124 students in 7th grade How many brush their teeth twice a day?
Vic's favorite cookie recipe uses 250 grams of flour for every 170 grams of butter. Imani made cookies using 750 grams of flour for every 630 grams of butter. What will Vic think of the amount of butter in Imani's cookies?
Vic's cookies having a ratio of flour to butter of 250/170 contains less
butter than Imani's cookies, 750/630, what Vic will think is therefore;
(A) Imani's cookies have too much butter
Which method can be used to evaluate the cookies?
The quantity of flour per 170 grams of butter in Vic's cookies = 250 grams
The amount of flour Imani uses for every 630 grams of butter = 750 grams
Required:
What Vic will think about the amount of butter in Imani's cookies
Solution;
[tex]Ratio \ of \ butter \ per \ gram \ of \ flour \ in \ Vic's \ cookies = \dfrac{170 \, g}{250 \, g} = \dfrac{17}{25} = \mathbf{0.68}[/tex]
[tex]Ratio \ of \ butter \ per \ gram \ of \ flour \ in \ Imani's\ cookies = \dfrac{630\, g}{750\, g} = \dfrac{17}{25} = \mathbf{0.84}[/tex]
Imani's cookies contains more cookies than Vic's cookies, what Vic will
think of the amount of butter in Imani's cookies is therefore;
(A) Imani's cookies have too much butter
Learn more about fractions here:
https://brainly.com/question/24378782
Answer:
Step-by-step explanation:
the answer is A ^^
I need to know an answer to an equation
2 2/5w = 21 3/5
Answer:
w = 9
Step-by-step explanation:
Firstly, change the mixed numbers to improper fractions, that is
[tex]\frac{12}{5}[/tex] w = [tex]\frac{108}{5}[/tex] ( multiply both sides by 5 )
12w = 108 ( divide both sides by 12 )
w = 9
Answer:
w=9
Step-by-step explanation:
1970 Dodge challanger rt
Answer:
215 in³
Step-by-step explanation:
This is just for math problems.
The 1970 Dodge Challenger could have engines ranging from 225 cubic inches to 440 cubic inches.
What is the difference in displacement between the smallest and largest engines?
Now it's a math problem.
440 - 225 = 215
Answer: 215 in³
what is the y-inercept of the graph of f
y-intercept is where the line on your graph crosses through the y-axis
what is 9d + 6e in common factor for?
Sorry the picture is small you might have to zoom in!!
Hello !
________
[tex]\sf{9d \: + \: 6e}[/tex]
________
[tex]\sf{Rewrite \: as:}[/tex]
[tex]\sf{= 3 \: ^. \: 3d \: 3 \: ^. \: 23e}[/tex]
[tex]\sf{Factor \: out \: common \: term \: 3}[/tex]
[tex]\sf{= 3(3d \: + 2e)}[/tex]
Hopefully This Helps ! ~
#LearnWithBrainly
[tex]\underline{Answer :}[/tex]
Dollixna ~
What is the length of arc AB?
O 67 cm
O 127 cm
O 187 cm
O 367 cm
The length of an arc with π/3 radian angle and a radius of 18 cm is calculated as: 6π cm.
What is the Length of an Arc?If we are given a circle with radius, r, and a radian angle, ∅, therefore, the length of an arc would be:
S = r∅
Given the following:
r = 18 cm∅ = π/3 radiansLength of arc = 18 × π/3 = 6π cm
In conclusion, the length of an arc with π/3 radian angle and a radius of 18 cm is calculated as: 6π cm.
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El radio medio de la Luna es 1737 km, el de la Tierra es de 6,371 · 106 m, y el del Sol es de 6,96 · 105 km. a. ¿Cuántas veces es mayor el radio de la Tierra que el de la Luna? b. ¿Cuántas veces es mayor el diámetro del Sol que de la Tierra? c. ¿Cuántas veces es mayor el diámetro del Sol que el de la Luna?
Answer:
a) El radio de la Tierra es 3.668 veces mayor que el radio de la Luna.
b) El radio del Sol es 109.245 veces mayor que el radio de la Tierra.
c) El radio del Sol es 400.711 veces mayor que el radio de la Luna.
Step-by-step explanation:
a) ¿Cuántas veces es mayor el radio de la Tierra que el de la Luna?
En esta pregunta nos piden la razón del radio medio de la Tierra al radio medio de la Luna. Las unidades están en kilómetros:
[tex]r = \frac{6.371\times 10^{3}\,km}{1.737\times 10^{3}\,km}[/tex]
[tex]r = 3.668[/tex]
El radio de la Tierra es 3.668 veces mayor que el radio de la Luna.
b) ¿Cuántas veces es mayor el diámetro del Sol que de la Tierra?
El diámetro equivale a dos veces el radio, por tanto, se puede utilizar la relación de radios para determinar la razón, definida en este caso como la razón del radio medio del Sol al radio medio de la Tierra. Las unidades están dadas en kilómetros:
[tex]r= \frac{6.96\times 10^{5}\,km}{6.371\times 10^{3}\,km}[/tex]
[tex]r = 109.245[/tex]
El radio del Sol es 109.245 veces mayor que el radio de la Tierra.
c) ¿Cuántas veces es mayor el diámetro del Sol que el de la Luna?
El diámetro equivale a dos veces el radio, por tanto, se puede utilizar la relación de radios para determinar la razón. Una forma sintética de obtener la razón consiste en obtener el producto de las razones encontradas en a) y b). Es decir:
[tex]r = 3.668\times 109.245[/tex]
[tex]r = 400.711[/tex]
El radio del Sol es 400.711 veces mayor que el radio de la Luna.
A can contains 24 fluid ounces of fruit juice. How many pints of fruit juice does the cam contain ?
Answer:
1.5 pints.
Step-by-step explanation:
Solution,
Given,
1 cup = 8 oz.
2 cup = 1 pint.
So,
24 oz = 1 cup / 8 = 3 cup.
Then,
We have,
3 cup = 1 pint / 2 cups = 1.5 pints.
On a plane, 2/5 of the passengers were British. 30% of the British passengers were men. There were 36 British men on the plane. Find the total number of passengers on the plane
Answer:
76 passengers
Step-by-step explanation:
100-36 is 64 and that makes 64 + 36 =100-30 is 70% and we have 36 + 40 =76
There were 300 passengers.
What is Algebra?Algebra is the branch of mathematics that helps in the representation of problems or situations in the form of mathematical expressions.
Given:
Fraction of British = 2/5
Percent of British men = 30%
Number of British men = 36
let the British passenger be x
30 /100 * x= 36
x=120
and let the total passenger by y
2/5 of y = 120
y= 120 * 5/2
x= 300
Hence, there were 300 passengers.
Learn more about algebra here:
https://brainly.com/question/24875240
#SPJ5
What is the mode?
7, 6, 7, 7, 5, 3, 6, 5
TYPE ONLY THE NUMERIC ANSWER
Answer:
7
Step-by-step explanation:
5, 5, 6, 7, 7, 7
7 appears the most
Answer:
The mode is 7
Step-by-step explanation:
Add all of these numbers and divide it by 8 to get 7
Sophia downloaded 590 vacation pictures. Of the pictures, 60% show the beach. How many pictures show the beach?
Answer:
354
Hope this helps! Please mark Brainliest!
Answer:
the answer is 354
60% = 0.6/.6
590 x .6 = 354
I need help!!
I have only 5 mins
Answer:
it is 11 i believe if not sry delete my answer
Step-by-step explanation:
Simba Travel Agency arranges trips for climbing Mount Kilimanjaro. For each trip, they charge an initial fee of \$100$100dollar sign, 100 in addition to a constant fee for each vertical meter climbed. For instance, the total fee for climbing to the Shira Volcanic Cone, which is 300030003000 meters above the base of the mountain, is \$400$400dollar sign, 400.
Complete question :
Simba Travel Agency arranges trips for climbing Mount Kilimanjaro. For each trip, they charge an initial fee of $100 dollars, in addition to a constant fee for each vertical meter climbed. For instance, the price for climbing to the Shira Volcanic Cone, which is 3000 meters above the base of the mountain, is $400 dollars. Let F(d) denote the fee of a trip F (measured in dollars) as a function of the vertical distance climbed d (measured in meters). Write the function's formula.
Answer:
F(d) = $100 + $0.1d
Step-by-step explanation:
Given the following :
Total Cost of mountain climbing :
Initial fee + constant fee per vertical meter climbed
Initial fee = $100
Total cost of climbing the Shira volcanic cone = $400
Height of Shira volcanic cone = 3000 m
The fee of a trip ; F(d) ; where d = distance
Let constant fee per vertical meter = p
F(d) = $100 + 3000 * p
$400 = $100 + 3000p
$400 - $100 = 3000p
$300 = 3000p
p = 300/3000
p = $0.10
Hence, the fee for a trip:
F(d) = $100 + $0.1d
Answer:
y=100+0.1x
Step-by-step explanation:
khan academy
El ayuntamiento impone un 15% de multas retrasadas ¿Cuál será el impuesto para multas de 75€?
Answer:
75 x 0.15 = 11.25
Step-by-step explanation:
1
Kelly is wrapping paper around a box. The box is 16 in. long, 14 in. wide, and 3 in. high. What is the minimum amount of paper Kelly needs to completely wrap the box?
Answer:
672 in squared
Step-by-step explanation:
you multiple all the number together
Which of the following represents the value of a^-4/b^-2 when a is 3 and b is 2
Let's find out
[tex]\\ \sf\longmapsto \dfrac{a^{-4}}{b^{-2}}[/tex]
[tex]\\ \sf\longmapsto \dfrac{b^2}{a^4}[/tex]
[tex]\\ \sf\longmapsto \dfrac{2^2}{3^4}[/tex]
[tex]\\ \sf\longmapsto \dfrac{4}{81}[/tex]
1. 1. Under a dilation
of scale factor 2 with the center at the origin, if S (6, 7), what will
be the coordinates of the point S'?
2. What is the scale factor of the group dilation (with center at the origin) if point E (5,3)
becomes E' (15,9)?
3. Under a dilation of scale factor 5 with the center at the origin, if M (3,6), what will be
the coordinates of the point M'?
4. What is the scale factor of the dilation (with center at the origin) if point H (4,6)
becomes H' (24, 36)?
5. Under a dilation of scale factor 4 with the center at the origin, if J (2, 3), what will be
the coordinates of the point J'?
6. What is the scale factor of the dilation (with center at the origin) if point U (5,7)
becomes U' (25, 35)?
7. Under a dilation of scale factor 7 with the center at the origin, if K (5,6), what will be
the coordinates of the point K'?
8. What is the scale factor of the dilation (with center at the origin) if point A (4,5)
becomes A' (16, 20)?
what is 50 approximately equal to
Answer:
50 lol
Step-by-step explanation:
can I please have brainliest I only need 2 more :)
hello, can anyone solve this equation? any help is appreciated!
4 + x = 11
Answer:
The answer is 7
Step-by-step explanation:
So you would look at it this way, what plus 4 is going to equal 11? The answer is 7, so x would equal 7 :) I hope this helped!!
Answer:
7
Step-by-step explanation:
use reverse operation to find the missing
Addition=subtraction
Multiplication=division
11-4=7
The probability that a city bus is ready for service when needed is 84%. The probability that a city bus is ready for service and has a working radio is 67%. Find the probability that a bus chosen at random has a working radio given that it is ready for service. Round to the nearest tenth of a percent. Show your work
The probability that a city bus is ready for service when needed is 84%. The probability that a city bus is ready for service and has a working radio is 67%. Find the probability that a bus chosen at random has a working radio given that it is ready for service. Round to the nearest tenth of a percent. Show your work
Answer↷79.76%
Solution↷The probability that a city bus is ready for service when needed ⇢ 84% = 0.84The probability that a city bus is ready for service and has a working radio ⇢ 67% = 0.67the probability that a bus chosen at random has a working radio given that it is ready for service⇢ 0.84/0.67 = 0.79 = 79.76 %help me on this ill give brainliest
Answer:
1, 3, and 4 are correct
Step-by-step explanation:
We know that to find the radius, we divide the diameter by 2, so the first one is correct.We know that the second one is incorrect because we just said that we would divide the diameter by 2 for the radius, so we would multiply the radius by 2 to find the diameter.The third statement is correct because the circumference is approximately 3 times bigger than the diameter.The fourth statement is correct because the circumference is equal to pi times 2 times the radius.If I am incorrect in my reasoning, please let me know so that I can plan better for my future answers. Have an amazing day.
The polygons in each pair are similar. Find the scale factor of the smaller figure to the larger figure.
Answer:
smaller figure: 3
larger figure: 5
or, in other words, 3/5.
Step-by-step explanation:
simplify the fraction, or 15/25.
correct me if i'm wrong. hope this helps. :)
PLEASE HELP picture below
Answer:
12/4 is equal to 15/5
The next equality after 12/4 is 15/5.
Answer:
15
Step-by-step explanation:
12/4=3, so x/5=3.
5x3=15
Best answer gets brainliest!!!
1. In the following pictograph, how many symbols would you use to represent 21 books?
a.7
b.3.5
c.126
d.63
Answer:
B
Step-by-step explanation:
Since 3 symbols represent 18 books, half of the symbol is 3. 18+3=21