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FrozenT [24]
3 years ago
6

Why is 2 + (−3) equal to −1?

Mathematics
2 answers:
natali 33 [55]3 years ago
7 0

Answer:

The answer is D.

Step-by-step explanation:

On a number line

:-Adding a positive number means moving to the right

-Adding a negative number means moving to the left

basically the easiest way to explain is pretend to have a point at -3 if you move it to the right 2 times your point will now be at -1.

lord [1]3 years ago
6 0

Answer:

Because it is 3 units to the left of 2 on a horizontal number line. (first answer)

Step-by-step explanation:

when you substract you take the number your substracting and move it to the left of the number line the number your substracting.

In this case you have 2 and you substract 3 so from 2 you move 3 spaces from the numberline to the left

Which is the first one.

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Why do some numerical expressions contain parentheses
Elden [556K]

The most basic and common reason to use parentheses, brackets, and braces is to control the order of operations.

<h3>What are parentheses?</h3>

In mathematics, parenthesis is used to arrange numbers in the sequence of operations, clarify numbers, and denote multiplication.

Suppose you have an expression as:-

E = { ( 5-2 )8} 6

In this case, you would calculate 5 minus 2 first (parentheses), then multiply by 8 (brackets), then complete the part inside the curly braces, and finally multiply by 6.

Therefore the most basic and common reason to use parentheses, brackets, and braces is to control the order of operations.

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6 0
2 years ago
a right rectangular prism has a length of 8 centimeters width of 10 centimeters and height of 10 centimeters the volume of the p
nata0808 [166]

Answer:

800

Step-by-step explanation:

8*10*10=

8*10=

80*10=

800cm.

i broke up the problem. hope this helps!

4 0
3 years ago
Read 2 more answers
Preston has a car washing business. Last year he washed 20 cars a week. This year, he washed 1,200 cars. How many more cars did
marishachu [46]

Answer:

160 cars

Step-by-step explanation:

The computation of the number of more cars he washed this year is given below;

Last year, he washed 20 cars a week so on yearly basis he washed

= 20 cars × 52 weeks

= 1,040 cars

And, this year he washed 1,200 cars

So, the number of more cars he washed this year is

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= 160 cars

8 0
3 years ago
A certain bacteria population increases continuously at a rate proportional to its current number. The initial population of the
luda_lava [24]

Answer: C

Step-by-step explanation:

This describes an expotential function

At t = 0, P = 70

Therefore, C = 70

P = 70 e^kt

Solve for k by plugging in (4,360)

k = 0.4094

plug in t(7 hours)

70 e^(0.4094*7)

The answer roughly equals C

3 0
3 years ago
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Ben has a cellphone plan where he pays $12 per
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Answer:

H

Step-by-step explanation:

I have done the work before

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3 years ago
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