3 years ago

What is the domain of the equation y = 2/5x - 4?

Mathematics

1 answer:

zepelin [54]3 years ago

8 0

Answer:

domain= {x/x€R/x≠0}

Step-by-step explanation:

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You have been asked to build a scale model of a restaurant out of bottle caps. The restaurant is 20 feet tall. Your scale is 2.4

Amanda [17]

Answer:

$40\ bottle\ caps$

Step-by-step explanation:

we know that

The scale is $\frac{2.4}{1}\ \frac{cm}{ft}$

That means

2.4 cm in the model represent 1 foot in the real

In this problem

The restaurant is 20 feet tall

Find the height of the model

Multiply the actual height of the restaurant by the scale 2.4

$20\ ft=20(2.4)=48\ cm$

A bottle cap is 1.2 cm tall

To find out the number of bottle caps divide the height of the model by 1.2

$\frac{48}{1.2}= 40\ bottle\ caps$

8 0

3 years ago

What is 6 x 10(2) aka 6 x 10 to the second power

Crank

Answer:

3600

Step-by-step explanation:

7 0

3 years ago

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Which is the additive inverse of the complex number -8+3i?

lawyer [7]

The additive inverse of a complex z is a complex number $-z,$ so that

$\mathsf{z+(-z)=-z+z=0+0i=0}$

Finding $-z:$

$\mathsf{z=-8+3i}\\\\\\ \mathsf{z+(-z)=0+0i}\\\\\ \mathsf{-8+3i+(-z)=0+0i}\\\\ \mathsf{-z=0+0i+8-3i}\\\\ \mathsf{-z=(0+8)+(0i-3i)}\\\\ \boxed{\begin{array}{c}\mathsf{-z=8-3i} \end{array}}\qquad\checkmark$

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</span>I hope this helps.

Tags: <em>complex number additive inverse opposite algebra</em>

3 0

3 years ago

Round 35295 to the nearest thousand

Alex_Xolod [135]

35000, rounding down from five.

4 0

3 years ago

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The scale on a map is 1 cm: 7 km. If two cities are 15 cm apart on the map, what is the actual distance between the cities?

Lostsunrise [7]

Answer: C. 105 km

Step-by-step explanation: