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3 years ago

PLEASE HELP!! will mark brainliest!

Mathematics

1 answer:

puteri [66]3 years ago

5 0

Answer:

1. Hypothesis: The ball is red

Conclusion: It will bounce higher

Converse: If the ball bounces higher, then it is red

2. Hypothesis: A plane contains two lines

Conclusion: They are coplanar

Inverse: If two lines are in a planes, then they are coplanar

3. Hypothesis: The light does not come on

Conclusion: The circuit is broken

Inverse: If the circuit is broken, then the light does not come on

4. Hypothesis: It is cold outside

Conclusion: You must wear your jacket

Inverse: If you must wear your jacket, then it is cold outside

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34. Lora is thinking of a number. It is less than 50 It is a 2-digit number. 3 is a factor of this number. The sum of its digits

-Dominant- [34]

Answer:

Step-by-step explanation:

The number is between 10 and 49

The number is divisible by 3

Let the 10s digit = x

Let the units digit = y

1/3 * (10x + y) = x + y multiply both sides by 3

10x + y = 3(x +y) remove the brackets.

10x +y = 3x + 3y Subtract 3x from both sides

10x - 3x + y = 3y Combine\

7x + y = 3y Subtract y from both sides.

7x = 3y - y Combine

7x = 2y

x can't be very big. Even taking 1/3 will get out of range is you use 6.

Also x should be an even number. The units digit cannot have a fraction in it.

Try making x = 2

7*2 = 2*y

14 = 2y Divide by 2

14/2 = y

y = 7

So the number is possibly 27. Let's check it out.

The number is between and includes 10 and 49. 27 is between these two endpoints.
27 is divisible by 3
1/3(27) = sum of digits
9 = (2 + 7)

All of the conditions are met. It's B

8 0

2 years ago

2x + 5y= 18 4x + 20y= -36 Solve and Explain first to get right gets brainliest

Jet001 [13]

because 4x+20y=-36,so ( 4x+20y)/2=2x+10y=-18

(2x+10y)-(2x+5y)=-18-18

5y=-36

then y=-7.2

because 2x=18-5y

so x=(18-5y)/2=(18-5*(-7.2)）/2=27

4 0

3 years ago

Help ASAP!! See screenshot below.

Anika [276]

ANSWER

The relation is not a function.

EXPLANATION

The relation is not a function because we have an x-coordinate mapping on to more than one y-coordinate.

This occurs at x=1.

The ordered pairs (1,1) and (1,3) disqualify the relation from being a function.

Hence the relation is not a function.

5 0

3 years ago

-2x+3y=-13 and 3x-3y=12

Tresset [83]

Answer:

x = -1 ,y = -5

Step-by-step explanation:

--> -2x + 3y +3x-3y = 12-13

--> x= -1

then

--> -2(-1) +3y =-13

--> 2+3y= -13

--> 3y = -15

--> y =-15/3

--> y = -5

3 0

3 years ago

Read 2 more answers

Is 3x^2+y^2=5 a quardatic function

maw [93]

Answer:

no lol

Step-by-step explanation:

6 0

2 years ago

Read 2 more answers