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nlexa [21]
3 years ago
7

−0.75 − (-2/5) + 0.4 + (-3/4)

Mathematics
1 answer:
Hoochie [10]3 years ago
8 0

Answer: -0.7

Step-by-step explanation:

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40 is what percent of 50
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Answer: 80% !

Step-by-step explanation:

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Write an expression that, when simplified is equivalent to 15x +7
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Answer:

2(7.5x+3.5)

Step-by-step explanation:

I can't remember what these equations are actually called, however in order to solve this you simply multiply 7.5 by 2, and then 3.5 by 2.

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3 0
3 years ago
The sum of the first 46 postive and odd numbers is
atroni [7]

The sum of first 46 positive and odd numbers is 2116

<em><u>Solution:</u></em>

Given that we have to find the sum of first 46 positive and odd numbers

<em><u>The sum of first "n" natural odd numbers which are positive is given as:</u></em>

Sum = n^2

Here, n = 46

Therefore,

sum of first 46 positive and odd numbers = 46^2

sum of first 46 positive and odd numbers = 46 \times 46 = 2116

Thus the sum of first 46 positive and odd numbers is 2116

3 0
3 years ago
How do you calculate the value of the height, base or width of a rectangle, when the given volume, is 10m^3 and the base is twic
harkovskaia [24]

The length and width of the rectangle is 2√5m and √5m respectively

<h3>Volume of a rectangle</h3>

The formula for calculating the volume of a rectangle is expressed as:

V = lw

where

l is the length

w is the width

h is the height

If base is twice its width, then l = 2w

Substitute

10 = w(2w)

10 = 2w²

5 = w²

w = √5 m

Since l = 2w

l = 2√5m

Hence the length and width of the rectangle is 2√5m and √5m respectively

Learn more on volume of rectangle here: brainly.com/question/4062480

#SPJ1

3 0
2 years ago
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