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2 years ago

How to solve this. please help me ASAP. vector chapter

Mathematics

1 answer:

Dafna1 [17]2 years ago

8 0

Answer:

1) m = -1

2) k = -2; h = -8

Step-by-step explanation:

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Please help In which table does y vary directly with x?

grigory [225]

Answer:

Table D

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form $y/x=k$ or $y=kx$

In a proportional relationship the constant of proportionality k is equal to the slope m of the line and the line passes through the origin

Verify each case

Table A

For x=1, y=3

Find the value of k

$k=y/x$ -----> $k=3/1=3$

For x=2, y=9

Find the value of k

$k=y/x$ -----> $k=9/2=4.5$

the values of k are different

therefore

The table A not represent a direct variation

Table B

For x=1, y=-5

Find the value of k

$k=y/x$ -----> $k=-5/1=-5$

For x=2, y=5

Find the value of k

$k=y/x$ -----> $k=5/2=2.5$

the values of k are different

therefore

The table B not represent a direct variation

Table C

For x=1, y=-18

Find the value of k

$k=y/x$ -----> $k=-18/1=-18$

For x=2, y=-9

Find the value of k

$k=y/x$ -----> $k=-9/2=-4.5$

the values of k are different

therefore

The table A not represent a direct variation

Table D

For x=1, y=4

Find the value of k

$k=y/x$ -----> $k=4/1=4$

For x=2, y=8

Find the value of k

$k=y/x$ -----> $k=8/2=4$

For x=3, y=12

Find the value of k

$k=y/x$ -----> $k=12/3=4$

All the values of k are equal

therefore

The table D represent a direct variation or proportional relationship

The linear equation is $y=4x$

6 0

2 years ago

Read 2 more answers

A weather reporter in your area said that the speed of sound in air today is about one thousand one hundred feet per second. Wha

stira [4]

Answer:

The speed in scientific notation is $(1.1)(10^{3})$ feet per second.

Step-by-step explanation:

1. You have the following speed: One thousand one houndred feet per second.

2. You must convert from words to number. This is:

1,100 feet per second

3. To express this quantity in scientific notation, you can move the decimal point three places to the left, and write it as: 1.1 by $10^{3}$ (or 1,000) as following:

$1,100=(1.1)(10^{3})$

5 0

3 years ago

Need help with this please! its due in a couple mins

user100 [1]

The first one is incorrect. The actual solution of the problem is 5/2. I’m sorry i’m in a rush right now. But that’s all I can answer right now.

7 0

2 years ago

Could some help me thanks

dezoksy [38]

You are given 2/3 angles to solve for x;

24+56 = 90

90 + x = 180

x = 90 degrees

3 0

3 years ago

Find the sum of all integers 30 to 80. (Is there a formula to do this?

Shkiper50 [21]

Answer:

Add all the numbers from 30 to 80 and that is your answer

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers

How to solve this. please help me ASAP. vector chapter​

How to solve this. please help me ASAP. vector chapter