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2 years ago

+23-(-20)=43 how is that so?Explanation included

Mathematics

1 answer:

valina [46]2 years ago

7 0

Answer:

Well, when adding and subtracting negatives

You can change the symbol and positive or negative of the second number like

2 + (-1) is equal to 2 - 1

23 + 20 = 43

Therefore, 23 -(-23) = 43 because when you take away a debt you add to your balance.

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An electric bulb is sold in a box measuring 5 cm by 4 cm by 4 cm. If the shopkeeper receives them in a carton measuring 50 cm by

katen-ka-za [31]

Answer:

250

Step-by-step explanation:

Bulb box and carton both are of cuboidal shape.

For bulb box the dimensions are:

l = 5 cm, w = 4 cm, h = 4 cm

$V_{Bulb\: box} =lwh$

$\implies V_{Bulb\: box} =5(4)(4)$

$\implies V_{Bulb\: box} =80\: cm^3$

For Carton the dimensions are:

l = 50 cm, w = 20 cm, h = 20 cm

$V_{Carton} =lwh$

$\implies V_{Carton} =50(20)(20)$

$\implies V_{Bulb\: box} =20,000\: cm^3$

To find the number of bulbs packed in the carton, divide the $V_{Carton}$ by $V_{Bulb\: box}$

$Number \:of \:bulbs =\frac{V_{Carton}}{V_{Bulb\: box}}$

$\implies Number \:of \:bulbs =\frac{20,000}{80}$

$\implies Number \:of \:bulbs = 250$

So, 250 bulbs will be packed in one carton.

3 0

2 years ago

Someone please help it’s for a summative test due today!!

Gnoma [55]

Answer: 100.48 cm

hope this helped :)

7 0

2 years ago

!!!!!!!A dress pattern uses the scale 2 inches : 1 foot.if the model is 12 inches long how long is the dress!!!!!!pls Hurry

Hitman42 [59]

Using the scale ratio, the length of the dress is: 6 ft.

<h3>How to Apply Scale to Measurement?</h3>

Given a scale for the dress pattern as, 2 inches : 1 foot, it means 2 inches of the model equals 1 foot of the actual dress.

Therefore, using the scale ratio, let x represent the length of the dress. We would have:

2/1 = 12/x

x = (12 × 1)/2

x = 6 ft.

The length of the dress is: 6 ft.

Learn more about scale on:

brainly.com/question/2429309

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1 year ago

Is problem is from a "problems of the week set"

Leona [35]

His probability is 2/4

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2 years ago

Perform the indicated operation and simply the result.

Veseljchak [2.6K]

I am assuming that the whole 3x - 6 in the fraction is the numerator

the this simplifies to 3x (3x - 6)

= 9x^2 - 18x (C)

5 0

3 years ago

Read 2 more answers

+23-(-20)=43 how is that so?Explanation included​

+23-(-20)=43 how is that so?Explanation included