Answer:
a) y = 63/x
b) y = 3
Step-by-step explanation:
Inverse proportionality between two variables means that if one of them increases, then the other one decreases.
These type of relationships can be written as:
y = k/x
Now we know that when y =7, x = 9
Then we can replace these two values and find the value of k.
7 =k/9
7*9 = k
63 = k
The our relationship is:
y = 63/x
This is the solution to a).
Now let's go with b)
We want to find the value of y when x = 21. then we just need to replace x by 21 in the equation "y = 63/x"
We will get:
y = 63/21 = 3
When x = 21, y is equal to 3.
Need help will give you the brainliest
Answer:
The answer is 3v + 5w
Step-by-step explanation:
simple add how many v's there are which are 3 so its 3v and count how many w's there are which is 5 so 5w all together is 3v+ 5w
hope this helps!
Za 30 dag żurawiny zapłacono 9,75zł. Oceń prawdziwość każdego zdania.
Step-by-step explanation:
Odpowiedź:
9.75zł :3 = 3.25zł
3.25zł x 4 = 13zł - Prawda
3.25zł x 10 = 32.50zł - Prawda
Liczę na najlepsze.
how many yards
carpeting is needed to cover a 60 feet length room and 40 feet width
Answer:
[tex]266[/tex] [tex]\frac{2}{3}[/tex] [tex]yards[/tex]
Step-by-step explanation:
1. Approach
First, convert the dimensions of the room from feet to yards. Remember, the conversion rate between feet and yards is, [tex]3feet=1yard[/tex]. Next, find the area of the room by multiplying the length by the width.
2. Convert the unit of measurement
The measurement unit is given in feet, one must convert it into yards. The conversion rate between yards and feet is, [tex]3feet=1yard[/tex].
[tex]60feet=20yards\\\\40feet=13\frac{1}{3}yards[/tex]
3. Find the area of the room
Now multiply the length by the width to find the area of the room.
[tex]20yards*13\frac{1}{3}yrads\\\\= 20 * \frac{40}{3}\\\\=\frac{800}{3}\\\\= 266\frac{2}{3}_{.}yards^{2}[/tex]
Which is the right answer
Answer:
C
Step-by-step explanation:
List all the 4-digit even numbers that can be created by rearranging these number tiles.
3
4
7
2
Answer:
3472
3274
3742
3724
7342
7324
7234
7432
4372
4732
2374
2734
i found this much
These are the 12 possible 4-digit even numbers that can be created by rearranging the number tiles (3, 4, 7, 2).
To create 4-digit even numbers by rearranging the given number tiles (3, 4, 7, 2), we need to consider the following conditions:
The last digit must be an even number (2 or 4).The thousand digits cannot be 0.Considering these conditions, the possible 4-digit even numbers that can be formed are:
2347
2374
3247
3274
3427
3472
4237
4273
4327
4372
4723
4732
These are the 12 possible 4-digit even numbers that can be created by rearranging the number tiles (3, 4, 7, 2).
Learn more about the even numbers here:
https://brainly.com/question/2142825
#SPJ4
In a video game, a guppy that escapes a net turns into three goldfish. Each goldfish can turn into two betta fish. Each betta fish can turn into two angelfish. Complete the diagram and write the number of fish at each stage. Write and evaluate an expression for the number of angelfish that can be formed from one guppy
Answer: 1 guppy = 3 goldfish
1 goldfish = 2 betta fish.....so 3 goldfish = (3 * 2) = 6 betta fish
1 betta fish = 2 angel fish....so 6 beta fish = (6 * 2) = 12 angel fish
so the number of angelfish that can be formed by 1 guppy is 12 angelfish
Can somebody plz help answer the rest of these questions correctly (only if u done this before) thx :3
WILL MARK BRAINLIEST WHOEVER ANSWERS FIRST :SD
Answer:
9. 16.34
10. 51.84
11. 20.11
12. 76.03
13. 64.09
just look up circumference of a circle and you should be able to put the radius in the first thing that pops up :)
please answer will give brainliest
Answer:
50 im sorry if im wrong
Step-by-step explanation:
Answer:
225
Step-by-step explanation:
15 * 15 = 225
225 / 2 =
I am stuck with the above question, please help
Answer:
D
Step-by-step explanation:
Two lines are parallel if they have the same slope.
the given equation is in the form
y=mx+b
where
m=-5/2
b=-7
m is the slope. You can see this by noting that if you increase x by 1 you increase y by m.
So, in this case, you are looking for a line with slope of -5/2.
You can solve each of the choice equations for y to see which one has the right slope.
A: y=(2/5)x-6 no good
B: y=-(2/5)x-1 no good
C: y=(5/2)x-4 no good
D: y=-(5/2)x-4 GOOD
-7x-2y = -13
x – 2y = 11
A tea shop brewed 8 7/8 pitchers of chamomile tea, of which it sold 2 3/5 pitchers. How many pitchers remained unsold?
Answer:6 11/40
Step-by-step explanation: You can change your units to decimals or to fractions of equal value. Decimals are easier for this so 8 7/8= 8.875 and 2 3/5 =2.6. Then subtract: 8.875-2.6= 6.275 You can now convert back to a fraction by simplifying the .275 into 11 by dividing by 25 and 1000 into 40 by dividing by 25. 6+11/40= 6 11/40 tea left
Answer:
6 11/40
Step-by-step explanation:
First you have to convert the fractions into improper fractions, where 8 7/8 would turn into 71/8 and 2 3/5 would turn into 13/5. Then you have to find a common denominator which would be 40, so you get 355/40 and 104/40. Then to find the remaining amount, you have to subtract 104/40 from the 355/40, so 355/40 - 104/40, which equals 251/40. This turns into 6 11/40, which can't be simplified any further. Hope this helps :)
PLEASE PLEASE HELP. I’ve wasted so many points on this problem :(
Answer:
13 cm
Step-by-step explanation:
A^2+12^2=15^2
A^2+144=225
A^2=81
A=9
9x2=18
31-18=13 cm
Find the perimeter of a rectangle whose width is 3 cm and whose diagonal is 3 √5 cm long.
A^2+3^2=3√5^2
A^2+9=45
A^2=36
A=6
3+3+6+6=18 cm
What is the product of
(3y^-4) (2y^-4)
Answer:
Step-by-step explanation:
3(2)* y-4*y-4
6 y to the negative 8
if my answer helps please mark as brainliest.
10
Tara is playing a party game in which a tiny ball is
dropped into a rectangular box. To win the game, she
must guess where the ball will stop. What should she
guess to maximize her chances of winning?
scribes the likelihood of the ball
quare or rectangular shaped area?
square
circle
triangle
shaded area
4
Answer:
1. Shaded Area 2. UnlikelyStep-by-step explanation:
edge2021
Pls Help!!! Evaluate each expression for the given value of each variable.
...
cube root(8+ 3 root 21)+ cube root (8-3 root 21)
plese give good answer with explanation or I will report
Answer:
[tex]\sqrt[3]{8+3\sqrt{21} } + \sqrt[3]{8-3\sqrt{21} }[/tex] = 1Step-by-step explanation:
Given[tex]\sqrt[3]{8+3\sqrt{21} } + \sqrt[3]{8-3\sqrt{21} }[/tex]To find The value of the expressionSolutionLet's rewrite the given as:
[tex]\sqrt[3]{3\sqrt{21} + 8} - \sqrt[3]{3\sqrt{21} - 8}[/tex]Let the value is m and the expressions under 3rd roots are a and b, then we have
a = 3√21 + 8, b = 3√21 - 8m = ∛a - ∛bCube the both sides:
m³ = (∛a - ∛b)³m³ = a - b - 3[tex]\sqrt[3]{a^2b}[/tex] + 3[tex]\sqrt[3]{ab^2}[/tex]Simplify in bits:
a - b = 3√21 + 8 - 3√21 + 8 = 16ab = (3√21 + 8)(3√21 - 8) = 9*21 - 64 = 125∛ab = ∛125 = 5So the expression becomes:
m³ = 16 - 3[tex]\sqrt[3]{125a} + \sqrt[3]{125b}[/tex]m³ = 16 - 15∛a + 15∛bm³ = 16 - 15(∛a - ∛b)m³ = 16 - 15mSolve for m:
m³ + 15m - 16 = 0m³ - 1 + 15m - 15 = 0(m - 1)(m² + m + 1) + 15(m - 1) = 0(m - 1)(m² + m + 16) = 0m - 1 = 0, m² + m + 16 = 0m = 1 is the only real root, the quadratic equation has no real rootsThe answer is 1
look at this i think this boy likes me
Answer:
talk to him
Step-by-step explanation:
he def likes you lmazo
Can someone help me with this math!
Answer:
45
Step-by-step explanation:
((100-25)/100)× 60 is the correct answer
A rectangular pool is 6 feet by 12 feet. A 4 foot walkway is placed around the entire pool. What is the area of just the walkway?
PLEASEE HELP
Just look at the pictures I really need help
Answer:
Step-by-step explanation:
It can be shown that all four sides of this figure have the same length. This, in turn, is the definition of a rhombus.
what is 4,390.44 + 8.399, and show work pls
Answer:
4,398.839
Step-by-step explanation:
4,390.440 + 8.399=x
.000+.009=.009
.04+.09=.13
.4+.3=.7
.009+.13+.7=0.839
---------------------------
4390+8=4398
----------------------------
4398+0.839=4398.839
calvin has a fever with 38.5 degrees celsius, after taking medicine it drops by 2 degrees celsius. write the temperature of calvin after taking medicine
Answer:
36.5 degrees Celsius
Step-by-step explanation:
38.5-2=36.5 degrees Celsius
You have deposited SEK 10,000 in an account that gives 2% interest every year. How much have you received in interest after two years?
Answer:
404
Step-by-step explanation:
2% of 10000 = 200 in the first year, setting your account to 10200
2% of 10200 = 204 in the second year, setting your account to 10404
In the total of 2 years, you received 404 extra
Answer:
Deposite amount (P) = 10000
Interest ( R) = 2%
Years (T) = 2
Formula
S.I =PRT÷100
S.I =10000×2×2÷100
S.I =40000÷100
S.I =400
You have received interest after 2 years =400
Step-by-step explanation:
is (0,-4)a solution ?
Please help :/ marked brainly
Answer:
Not enough informations
Answer:
no its -4
Step-by-step explanation:
EVERYONE PLZ PLZ PLZ ANSWER THIS QUESTION
Answer:
the answer is definitely c
Answer:
C
Step-by-step explanation:
Hope this helps! Have a nice day :D
Mr Hall walked of the way from his house to work.
He walked 6 miles.
How far is it in total from his house to work?
?
6 miles
Answer:
6 miles
Step-by-step explanation:
Which statement best uses this information to explain why the AA criterion can be used to prove ABC~DBE
Answer:b
Step-by-step explanation:
Answer: B
Step-by-step explanation:
1. I have a tablespoon, but I need a teaspoon. What do I do?
2. I have a 2 cup measuring cup and need 1 1/4 cup mil and 1/2 cup of vegetable oil. How far do I fill it up if I’m measuring together?
I only need help with these two, my brain went completely blank while solving these.
Answer:
Step-by-step explanation:
1 tablespoon = 3 teaspoons
You need to fill the tablespoon a third full. Not accurate, but that's what you have to do.
:::::
1¼ + ½ = 1¾
you need to fill the 2 cup measuring cup ⅞ full to get 1¾ cups.
I'll give brainliest
Answer:
its 2/3
my bad
which graph represents exponential decay?
Answer:
I THINk i did this but i will try to reamber
Step-by-step explanation: