Answer:
Should be 7
Step-by-step explanation:
Answer:
7 laptops
Step-by-step explanation:
3, 885 divided by 555= 7
What is a hectoliter?
1,000 liters
100 grams
1/100 of a liter
100 liters
Answer:
100 litres
Step-by-step explanation:
Answer:
It is 100 liters
Step-by-step explanation:
I hope it helps lol
You have 2000 grams of substance A which has decay constant 0.03, and you have 3000 grams of substance B, which has decay constant 0.05. After how many years will the amounts of the two substances be equal?
Answer:
If you have a quantity X of a substance, with a decay constant r, then the equation that tells you the amount of substance that you have, at a time t, is:
C(t) = X*e^(-r*t)
Now, we know that:
We have 2000g of substance A, and it has a decay constant of 0.03 (i assume that is in 1/year because the question asks in years)
And we have 3000 grams of substance B, with a decay constant of 0.05.
Then the equations for both of them will be:
Ca = 2000g*e^(-0.03*t)
Cb = 3000g*e^(-0.05*t)
Where t is in years.
We want to find the value of t such that Ca = Cb.
So we need to solve:
2000g*e^(-0.03*t) = 3000g*e^(-0.05*t)
e^(-0.03*t) = (3/2)e^(-0.05*t)
e^(-0.03*t)/e^(-0.05*t) = 3/2
e^(t*(0.05 - 0.03)) = 3/2
e^(t*0.02) = 3/2
Now we can apply Ln(x) to both sides, and get:
Ln(e^(t*0.02)) = Ln(3/2)
t*0.02 = Ln(3/2)
t = Ln(3/2)/0.02 = 20.3
Then after 20.3 years, both substances will have the same mass.
How many wholes are in 1/8?
Answer:
There are NO wholes in 1/8.
If it were 8/8, then it would be equal to 1 whole. Since it is only 1/8, there is non wholes.
which mortal kombat character is yalls favorite? Mine is kabal.
Answer:
omg! mine is Kabal tooo
Step-by-step explanation: i love mortal combat lol
Answer:
Scorpion
I am a normie yes I know
Leave me alone
Step-by-step explanation:
Examine the diagram. It is not drawn to scale.
What is the m3?
m3 =_____°
Answer:
105
Step-by-step explanation:
180 - 75 = 105
Answer:
copy and paste this link that imma put under your question I’m not really good at this but this video no cap help and others sorry hope this helps
4/9 x ? =1 what is the answer
Answer:
Step-by-step explanation:
X=2.25
Ur welcome
Answer:
Step-by-step explanation:
4/9*x=1
x=9/4 The reciprocal of 4/9 is 9/4 and makes 1 whole.
**reciprocal is a mathematical expression or function so related to another that their product is one; the quantity obtained by dividing the number one by a given quantity
By what number must you multiply a quantity in order to increase it by 25% in a single step?
Answer:
5/4
Step-by-step explanation:
Lets suppose a quantity A that has a value of x
A = x
25% of A is = x/4
now adding this 25% to get 25% increase in the original value
A' = x+ x/4
A' = 5x/4
A' = 5*A/4
This means that , in order to increase the value by 25% in a single step we must multiply the the original value by 5/4.
2. What is the thickness of the sediment along the east coast of North
America? I
What is the area of the garden
Answer:
C) 1022 1/4 square feet
Step-by-step explanation:
2L+2W=134 (perimeter)
23.5*2+2L=134
L=(134-47)/2
L=87/2=43.5 feet
A=L*W
A=(43.5)*(23.5) ft squared
A=1022.25 square feet
Plsss hellpppp 14 and 15 plsssssss
Answer:
14). 2nd quadrant
15). 1st quadrant
Step-by-step explanation:
14).Coordinates of a point → J(-8, -12)
Coordinates of the new point J' after reflection of x-axis will follow the rule,
(x, y) → (x, -y)
Coordinates of J' → (-8, 12)
Therefore, point J' will lie in 2nd quadrant.
15). Coordinates of a point → W(-6, 7)
Rule for the rotation by 90°clockwise about the origin,
(x, y) → (y, -x)
Coordinates of point W → (-6, 7)
Following this rule,
W(-6, 7) → W'(7, 6)
Therefore, point W' will lie in the first quadrant.
-8x-x=x-4x plz find for x
Answer: x=0
Step-by-step explanation:
Please help answer I’ll give brainliest
Answer:
ok i'll help just send me the question :)
Step-by-step explanation:
Answer:
what's wrong
Step-by-step explanation:
Drag the tiles to the boxes to form correct pairs.
Match the trigonometric expressions to their solutions.
Answer:
1) cos (140°-(50°+30°)) = 1/2
2) [tex]sin255^{\circ}=\frac{-\sqrt{2}-\sqrt{6} }{\sqrt{4} }[/tex]
3) [tex]cos150^{\circ}=-\frac{ \sqrt{3} }{2}[/tex]
4) , [tex]tan 240^{\circ}=\sqrt{3}[/tex]
Step-by-step explanation:
1) cos (140°-(50°+30°))
Solving:
cos (140°-(50°+30°))
=cos(140°-80°)
=cos(60°)
=1/2
So, cos (140°-(50°+30°)) = 1/2
2) sin 255°
We can write sin 255° as sin(180°+75°)
Solving sing formula sin(a+b)=sin(a)cos(y)+cos(x)sin(y)
[tex]sin(180^{\circ}+75^{\circ})\\=sin(180^{\circ})cos(75^{\circ})+cos(180^{\circ})sin(75^{\circ})\\=0(cos(75^{\circ}))+(-1)(\frac{\sqrt{2}+\sqrt{6} }{\sqrt{4} } )\\=0+(-1)(\frac{\sqrt{2}+\sqrt{6} }{\sqrt{4} } )\\\=\frac{-\sqrt{2}-\sqrt{6} }{\sqrt{4} }[/tex]
So, [tex]sin255^{\circ}=\frac{-\sqrt{2}-\sqrt{6} }{\sqrt{4} }[/tex]
3) cos 150°
We can solve this using the identity: cos(x)=sin(90°-x)
Solving:
cos 150°= sin(90°-150°)
=sin(-60°)
We know sin(-x)=-sin(x)
=-sin(60°)
=[tex]-\frac{ \sqrt{3} }{2}[/tex]
So, we get [tex]cos150^{\circ}=-\frac{ \sqrt{3} }{2}[/tex]
4) tan 240°
We know tan(180°+x)=tan(x)
tan 240° can be written as tan(180°+60°)
Using the above identity:
tan(180°+60°)=tan(60°) = [tex]\sqrt{3}[/tex]
So, [tex]tan 240^{\circ}=\sqrt{3}[/tex]
Answer:
here ya go
Step-by-step explanation:
The sum of three consecutive integers is more than 62. Write an inequality to represent the above
situation then solve your inequality.
Given:
Sum of three consecutive integers is more than 62.
To find:
The inequality to represent the above situation then solve your inequality.
Solution:
Let the three consecutive integers are [tex]x,x+1,x+2[/tex] respectively.
Sum of three consecutive integers is more than 62. So,
[tex]x+(x+1)+(x+2)>62[/tex]
[tex]3x+3>62[/tex]
Subtract 3 from both sides.
[tex]3x>62-3[/tex]
[tex]3x>59[/tex]
Divide both sides by 3.
[tex]x>\dfrac{59}{3}[/tex]
Therefore, the required inequality is [tex]x+(x+1)+(x+2)>62[/tex] and solution is [tex]x>\dfrac{59}{3}[/tex].
what fraction of 9hours 30minutes
Pls help♀️♀️♀️♀️♀️♀️♀️♀️♀️♀️♀️♀️♀️♀️♀️
Hi , the answer I choose was wrong , what is the correct answer ? Will choose brainlest so be quick
Answer:
SAS
Step-by-step explanation:
Answer:
it’s the first one
Step-by-step explanation:
Mya runs around a 400 m track at a constant speed of 250 m/min. how many minutes does it take Mya to complete four laps of the track
Answer:
6.4 laps
Step-by-step explanation:
HURRY 65 POINTS
consider the reduction of the rectangle.
A larger rectangle has a length of 18 inches and width of 8 inches. A smaller rectangle has a length of x inches and width of 3 inches.
Write a proportion and then solve to find the missing measure of the reduced rectangle.
What two ratios can be used in the proportion?
What is the value of the missing measure?
Answer:
18/8 = x/3
x = 6.75 inches (length)
Step-by-step explanation:
A larger rectangle has a length of 18 inches and width of 8 inches.
Inches /width = 18/8
So, for a rectangle that has a length of x inches and width of 3 inches the ratio is :
x/3
Solving for x:
18/8 = x/3
18/8 (3) =x
6.75 in= x
Feel free to ask for more if needed or if you did not understand something.
Lisa cleans 6 apartments in 2.5 hours. If Lisa cleans 30 apartments at this same rate how long will it take her?
Answer:
12.5 hours
Step-by-step explanation:
Answer:
it will take Lisa 12.5 hours
Step-by-step explanation:
first figure out how many minutes it takes her per apartment.
in 2.5 hours is 150 minutes so divide 150 by 6 = 25
So, it takes her 25 minutes per apartment.
next, find out how many minutes it takes her to clean 30 apartments by:
30* 25= 750 minutes for 30 partments
divide 750 by 60 to find out how many hours
12.5 hours.
At noon, a tank contained 10 cm of water. After several hours, it contained 7 cm of water. What is the percent decrease of water in the tank?
Please answer with explanation.
Answer:
10cm - 7cm = 3cm
this 3cm is the decrease in the depth of water, let us find the percentage decrease.
%decrease=(decrease÷original depth) × 100%
%decreas=(3cm÷10cm)×100%
therefore we get 30%
A 120 pack of paper towels last 1/2 a year. How many paper towels per month did we use
Answer:
20
Step-by-step explanation:
Because if 120 lasts 1/2 a year which is equivalent to 6 months you do 120 divided by 6 and get 20 hope this helps
Answer:
120/6 = 20 paper towels per month
Step-by-step explanation:
half a year is 6 months
120 divided by 6 is 20
How much will a cup of coffee that is $5.15 cost with 5% sales tax?
Answer:
It will cost $5.41
Step-by-step explanation:
You would take 5% of 5.15 since that is the price of the coffee with is about 0.26 cent than you add that to the cost of the coffee.
There are 52 cars in the movie theater parking lot. 12 more cars parked in the parking lot before the movie started but 3 cars left. How many cars are in the parking lot
Answer:
61
Step-by-step explanation:
52 + 12 = 64
64-3 that left is 62 cars in the parking lot
There are 61 cars in the parking lot.
52 + 12 = 64
64 - 3 = 61
I hope this helps, if it did, please mark brainliest and have an amazing rest of your day. Stay safe! xx
archibald is so excited that he earned $200 but then uncle ramon reminds archibald he borrowed $210 for his last adventure. after archibald pays uncle ramon all that he made is the debt settled
Answer:
Um finish the question but if its how much does he have left, its none.
Step-by-step explanation:
Didn't finish question and the reason why it's none well (-10), is because he had $200.000 than got 200=10 taken away.
In how many different ways can five children hold hands to play "Ring Around the Rosy"?
Answer:
Step-by-step explanation:
25
In Mrs. Madison's math classes, 15% of the students have an ‘A’. If 18 students have an ‘A’, how many students are in Mrs. Madison’s math classes? [Type your answer as a number.]
Answer:
The correct answer is 120 students!
Step-by-step explanation:
There is a proportion you need to write down to solve it but i don’t know how to write it on here!
find the exact values of the six trigonometric functions of 0
Complete question is;
Find the exact values of the six trigonometric functions 0 if the terminal side of 0 in standard position contains the points(-5,-4).
Answer:
Sin θ = -4/√41
Cos θ = -5/√41
tan θ = 4/5
Cosec θ = (√41)/-4
Sec θ = (√41)/-5
Cot θ = 5/4
Step-by-step explanation:
Now, we are given the point (-5, -4)
These are x and y points.
They will form a triangle and we know that from pythagoras theorem;
x² + y² = r²
Where r is the distance between the point and the origin
Thus;
r² = (-5)² + (-4)²
r² = 25 + 16
r = √41
So, y is the opposite side of the triangle while x is the adjacent side with r being the hypotenuse.
Thus, the trigonometric ratios are;
Sin θ = opp/hyp = -4/√41
Cos θ = adj/hyp = -5/√41
tan θ = opp/adj = -4/-5 = 4/5
Cosec θ = 1/Sin θ = 1/(-4/√41) = (√41)/-4
Sec θ = 1/cos θ = 1/(-5/√41) = (√41)/-5
Cot θ = 1/tan θ = 1/(4/5) = 5/4
From data gathered in the period 2008−2012, the yearly value of U.S. exports can be modeled by the function E(x) = −228x3 + 2,252.8x2 − 6,098.5x + 11,425.8 where x is the number of years after 2008 and E(x) is the value of exports in billions of dollars. The yearly value of U.S. imports can be modeled by the function I(x) = −400.4x3 + 3,954.4x2 − 11,128.8x + 17,749.6 where x is the number of years after 2008 and I(x) is the value of imports in billions of dollars. Estimate the total value the U.S. imported and exported in 2011. Round to the nearest whole number. About billion dollars were imported and exported by the U.S. in 2011.
Answer:you got this:)
Step-by-step explanation:
53 students divided into groups of 6 students how many groups of students will there be?
Answer:
9
Step-by-step explanation:
53/6 = 8 R5
One of the groups will have only 5 students because you can only have whole students, not parts of a student.
Answer:
Step-by-step explanation:
53/6= 8 5/6
The first 6 groups will have 8 students with 5 students remaining. They can have 5 groups with 9 students and 1 with 8 students