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3 years ago

I need help on this question!!!Feel free to explain your answer! :)

Mathematics

2 answers:

sertanlavr [38]3 years ago

5 0

Answer:

i am not that smart.

Step-by-step explanation:

idk this im dumb.

Naya [18.7K]3 years ago

4 0

Answer:

The area of Postage Stamp measured in $cm^{2}$

Step-by-step explanation:

Postage Stamp is in Rectangular or a Square shape.

Size of the stamp is very small that is in centimeter not in meter.

We have,

$\textrm{Area of Rectangle}= Length\times Breadth= cm\times cm=cm^{2} \\\textrm{Area of Square}= side\times side= cm\times cm=cm^{2} \\$

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A. Show that the vector v = ai + bj is perpendicular to the line ax + by = c by establishing that the slope of v is the negative

pishuonlain [190]

Answer:

Part A:

$m_1m_2=-1$

$\frac{b}{a}(\frac{-a}{b})=-1\\-1=-1$

Hence proved that Vector= ai + bj is perpendicular to the line ax + by = c.

Part B:

Slope of vector = $\frac{b}{a}$

Step-by-step explanation:

Condition for perpendicular is:

$m_1m_2=-1$

Part A:

Consider the vector v = ai + bj

x component of vector=a

y component of vector=b

Slope of vector= $m_1=\frac{y}{x}=\frac{b}{a}$

Consider the line ax + by = c:

Rearranging the equation:

ax+by=c

by=c-ax

y= $\frac{-ax}{b}+\frac{c}{b}$

According to general equation of line: $y=mx+c$

Where m is the slope

In our case the slope of above line is:

$m_2=\frac{-a}{b}$

According to the condition of perpendicular:

$m_1m_2=-1$

$\frac{b}{a}(\frac{-a}{b})=-1\\-1=-1$

Hence proved that Vector= ai + bj is perpendicular to the line ax + by = c.

Part B:

Slope of vector is also calculated above.

Since the slope of vector is negative reciprocal of the slope of the given line:

According to equation of line ax + by = c

y= $\frac{-ax}{b}+\frac{c}{b}$

According to general equation of line: $y=mx+c$

Where m is the slope

Slope of given line=m= $\frac{-a}{b}$

negative reciprocal of the slope of the given line = $\frac{b}{a}$

Slope of vector = $\frac{b}{a}$

5 0

3 years ago

What in a region can be affected by latitude, topography, altitude and closeness to a large body of water, jet streams and surfa

ELEN [110]

Answer:

Hey!

Step-by-step explanation:

Latitude, or how far one is from the equator, greatly affects the climate and weather of an area. If you live close to the equator, the climate will be warmer, while moving north or south from the equator brings a cooler climate. Altitude, or how high one is above sea level, has a similar effect–the higher the elevation, the colder the climate.

Hope this helps! :)

Have a nice day♥

8 0

3 years ago

After running for 3 1/2 km, Sacha only completed half the total distance of a marathon . What is the complete distance of that m

Gre4nikov [31]

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Answer: 7 km

Explanation:

3.5 x 2 = 7

I hope this helped!

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3 0

3 years ago

Read 2 more answers

What is the slope of (-17,-11), (10,8)

poizon [28]

-11-8=-19
-17-10=-27

slope=19/27

6 0

4 years ago

Read 2 more answers

75 points if answered corectly and brainlyist

olga nikolaevna [1]

Answer:

99.96 square feet

Step-by-step explanation:

The formula for the area of a rhombus is (pq)/2, where p and q represent the two diagonals:

A=pq/2

=(16.8)(11.9)/2

=199.92/2

=99.96 square feet

8 0

3 years ago

Read 2 more answers