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4 years ago

A meter is one thousandth of a kilometer. write an equation to show the relationship between 7 meters and 0.007 kilometer.

Mathematics

2 answers:

jasenka [17]4 years ago

6 0

Answer:

1000k=m

Step-by-step explanation:

if there is 1 meter for every 1000 kilometers, then .007 times 1000 will equal 7

Natasha_Volkova [10]4 years ago

6 0

Answer:

m=0.001k

k=kilometers, m=meters,

Step-by-step explanation:

One thousandth=0.001

0.001 k = 1 m

multiply each side by 7

0.007 k =7 m

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S. (4 - 2x)(4 + 2x)<br><br>

sineoko [7]

Answer:

16-4x^2

Step-by-step explanation:

u start multiplying them by each other .

4×4= 16

4×2x= 8x

-2x×4= -8x

-2x×2x= -4x^2

now u combine like terms

8x+-8x = 0

16-4x^2

I hope u understood.... lol

3 0

3 years ago

2x + 4y-31=123 what is the equation for x and then y

UNO [17]

Answer:

i would say

y = ( 77 - x ) / 2

Step-by-step explanation:

2x + 4y = 123 + 31

2x +4y = 154

4y = 154 -2x

y = ( 154 - 2x ) / 4

y = ( 77 - x ) / 2

6 0

3 years ago

WILL BRAINLIEST HURRY

inysia [295]

The correct answer would be the letter B

6 0

4 years ago

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mariela is standing in a building and looking out a window at a tree. The tree is 20 feet away from Mariela, Mariela's line of s

PtichkaEL [24]

Answer: 30.01 feet.

Step-by-step explanation:

You need to remember this identity:

$tan\alpha=\frac{opposite}{adjacent}$

Observe the figure attached, where $h_t$ is the height in feet of the tree.

You need to calculate $h_1$ of the Triangle 1, where:

$\alpha= \alpha_1=42\°\\opposite=h_1\\adjacent=20$

Substitute values into $tan\alpha=\frac{opposite}{adjacent}$ and solve for $h_1$ :

$tan(42\°)=\frac{h_1}{20}\\\\h_1=20*tan(42\°)\\h_1=18$

Now you need to calculate $h_2$ of the Triangle 2, where:

$\alpha= \alpha_2=31\°\\opposite=h_2\\adjacent=20$

Substitute values into $tan\alpha=\frac{opposite}{adjacent}$ and solve for $h_2$ :

$tan(31\°)=\frac{h_2}{20}\\\\h_2=20*tan(31\°)\\h_2=12.01$

Then the height in feet of the tree is:

$h_t=h_1+h_2\\h_t=(18+12.01)ft\\h_t=30.01ft$

5 0

3 years ago

Hector recorded the amount of time he spent running for 3 days.

WINSTONCH [101]

Answers : 72 Hours

1 day = 24 hours

2 days = 48 hours

3 days = 72 Hours

7 0

4 years ago

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