The value of y varies directly with the value of x, and y = –21 when x = 3.Which equations represent the relationship between y and x?
Choose exactly two answers that are correct.
A. -7x = y
B. y/x = -7
C. x/y = 7
D. xy = 7
Answers
Related Questions
Can some one plz Solve this. 4 - 2x = 10
HELP ME I BEG U!!!!!!!!!!!
Juliana wants to find the mass of a watermelon, what unit should she use?
What number has factors of 2 and 3 and 12 and 18 as multiples?
Choose exactly two answers that are correct.
A. The equation that represents the price, e, of the electricity is e + 0.05e + 6.30 = 48.
B. The equation that represents the price, e, of the electricity is 0.05e + 6.30 = 48.
C. The cost of the electricity before taxes or fees is $39.71.
D. The cost of the electricity before taxes or fees is $834.
Answers
C. The cost of the electricity before taxes or fees is $39.71.
e + 5% of e + 6.30 = 48
e + 0.05e + 6.30 = 48
1.05e = 48 - 6.30
1.05e = 41.70
e = 39.71
39.71 + 5%(39.71) + 6.30 = 48
39.71 + 1.99 + 6.30 = 48
48 = 48
A.
160 pi cm^3
B.
480 pi cm^3
C.
640 pi cm^3
D.
800 pi cm^3
Answers
Answers
The ratio in simplest form is 4:5.
What is ratio?
The ratio is defined as the comparison of two quantities of the same units that indicates how much of one quantity is present in the other quantity.
here, we have,
There are 16 girls and 20 boys in the school band
so, the ratio is,
16/20,
divide both by 4
and you get 4/5
Hence, the ratio in simplest form is 4:5.
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Answers
17 - 2c =
17 - 2 (7) =
17 - 14 = 3
17-2c for c=7
Replace c by its number
17-2(7)
17-14
= 3
I hope that's help !
Answers
a) The time for Emma to drink one full shake of milk is given by the equation E = 1/3 of a minute = 20 seconds
b) The time for Mike to play a full song is given by the equation M = 1/4 of a minute = 15 seconds
What is an Equation?
Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.
It demonstrates the equality of the relationship between the expressions printed on the left and right sides.
Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.
Given data ,
a)
Let the time for Emma to drink one full shake of milk be E
Now , the equation will be
The time for Emma to drink 1/4 of a milk = 1/12 of a minute
So , the time for Emma to drink one full shake E = 4 x time for Emma to drink 1/4 of a milk
Substituting the values in the equation , we get
The time for Emma to drink one full shake E = 4 x ( 1/12 )
On simplifying the equation , we get
The time for Emma to drink one full shake E = 4/12
The time for Emma to drink one full shake E = 1/3 of a minute
The time for Emma to drink one full shake E = 20 seconds
b)
Let the time for Mike to play a full song be M
Now , the equation will be
The time for Mike to play 1/2 of a song = 1/8 of a minute
So , the time for Mike to play a full song M = 2 x time for Mike to play 1/2 of a song
Substituting the values in the equation , we get
The time for Mike to play a full song M = 2 x ( 1/8 )
On simplifying the equation , we get
The time for Mike to play a full song M = 2/8
The time for Mike to play a full song M = 1/4 of a minute
The time for Mike to play a full song M = 15 seconds
Hence , the equations are solved
To learn more about equations click :
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1/12*4=1/3 of a minute
Thee answer to the 1st question is 1/3 of a minute
1/2*2=1 (The entire song)
1/8*2=1/4 of a minute
The answer to the 2nd question is 1/4 of a minute
Answers
The sequence was following the pattern of squaring numbers that were in chronological order.
1^2=1
2^2=4
3^2=9
4^2=16
So, next number would be 5^2=25.