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vitfil [10]
2 years ago
7

Which relationships could have a negative correlation? Select three options. number of hours worked and free time speed of a car

and minimum stopping distance the speed of a train and the length of time to reach the destination adult’s head circumference and age a tadpole’s age and the length of it’s tail
Mathematics
2 answers:
olga_2 [115]2 years ago
5 0

Answer

- number of hours worked and free time

- a tadpole’s age and the length of its tail

- the speed of a train and the length of time to reach the destination

Step-by-step explanation:

The more hours worked, the less free time they will have

The older a tadpole gets, the shorter its tail gets because it is turning into a frog

The faster a train. the shorter time it takes to get to a place

Alja [10]2 years ago
4 0

Answer:

hope you can understand

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The bowl of a circular birdbath has an inside diameter of 18 inches, as shown in the drawing belon.
Step2247 [10]

Answer:

254 square inches

Step-by-step explanation:

A=pi*r^2

A=pi*(d/2)^2

A=3.14*(18/2)^2

A=3.14*(9)^2

A=3.14*81

A=254.34 in^2

So, rounded no the nearest whole, the answer is 254 in^2

Which is option 2 or B

4 0
3 years ago
Translate this sentence into an equation.
Anit [1.1K]

Answer:

Step-by-step explanation:

40-j=8

8 0
2 years ago
Solve the system with elimination. {2x-y=2, -5x+4y=-2
DaniilM [7]

Answer:

{x=2,y=2

Step-by-step explanation:

Equation 1:

Multiply both sides of the equation by a coefficient

{ 4(2x-y)=2*4

-5x+4y=-2

Apply Multiplicative Distribution Law

{8x-4y=2*4,-5x+4y=-2

8x-4y+(-5x+4y)=8+(-2)

Remove parentheses

8x-4y-5x+4y=8-2

Cancel one variable

8x-5x=8-2

Combine like terms

3x=8-2

Calculate the sum or difference

3x=6

Divide both sides of the equation by the coefficient of the variable

x=6/3

Calculate the product or quotient

x=2

Equation two:

{-5+4y=-2, x=2

-5*2+4y=-2

Calculate the product or quotient

-10+4y =-2

Reduce the greatest common factor (GCF) on both sides of the equation

-5+2y=-1

Rearrange unknown terms to the left side of the equation

2y=-1+5

Calculate the sum or difference

2y=4

Divide both sides of the equation by the coefficient of the variable

y=4/2

y=2

Hope this helps!!

6 0
2 years ago
Look at this equation <br> y=7x+1/3x-6<br> if 3x=15, then what is the value of y?
Anarel [89]

Answer:

y=36/9 or y=4

Step-by-step explanation:

3x=15: x=5

y=7(5)+1/3(5)-6

y=36/15-6

y=4

4 0
3 years ago
Read 2 more answers
50 POINTS! I MARK BRAINLEST AND SAY THANKS!
Phantasy [73]
Y *x =20

y +x =9

rewrite 1st eq. as y = 20/x

subsituute that into 2nd eq.

20/x +x =9

multiply each term by X

20 +x^2 = 9x
 subtract 9x from each side:

x^2 - 9x +20 = 0

now factor:

(x-5) (x-4) = 0

solve for x
5-5 = 0
 4-4 = 0

so X can be 4 or 5

replace x into equations and solve for Y

 so when X = 4, Y = 5
 When X = 5, Y = 4

x= 5,4
y = 4,5



5 0
3 years ago
Read 2 more answers
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