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Inessa [10]
3 years ago
15

(-30) - (+40) = (-30) + (-40) explain why this is true

Mathematics
2 answers:
Mariana [72]3 years ago
7 0

Answer:

This is true because negative and positive is positive that why there is a addition sign in the middle and positive 40 becomes negative

Step-by-step explanation:

VikaD [51]3 years ago
6 0
You have to distribute the minus sign into the parentheses and you multiply it.
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Find the length of the hypotenuse if the base and height of a triangle are 6 m and 8 m , respectively
olga_2 [115]

Answer:

Step-by-step explanation:

Use the Pythagorean Theorem.

base² + height² = hypotenuse²

6² + 8² = hypotenuse²

100 = hypotenuse²

hypotenuse = √100 = 10 meters

5 0
3 years ago
A desk drawer is shaped like a rectangular prism. The height of the drawer is 7 inches. The bottom of the drawer has an area of
Bas_tet [7]

Answer:

1470 inches cubed

Step-by-step explanation:

Vol=length × width × height

But ALSO,

length × width = Area,

So we find another Volume equation,

Vol = BaseArea × height

This is the information you are given in the question.

Vol = 210 × 7

Vol = 1470 inches cubed

7 0
2 years ago
How do you solve #3? The one that is incorrect.
Sunny_sXe [5.5K]
Infinite they’re all multiples, so they are the same line
7 0
2 years ago
Given the two half-reactions, what must be done in the next step before the reaction can be balanced? First: upper A u superscri
kenny6666 [7]

In the first reaction, Gold (Au) gets 3 electrons and became Gold. In the second reaction, Iodine (I) loses 2 electrons and became Iodine.

<h3>What are cations and anions?</h3>

When the atom loses the election then it is called a cation and when it gains the electron is called an anion.

Two reactions are given.

First reaction;

Au³⁺ + 3e⁻ ⇒ Au

In the first reaction, Gold (Au) gets 3 electrons and became Gold.

Second reaction;

2I⁻ ⇒ I₂ + 2e⁻

In the second reaction, Iodine (I) loses 2 electrons and became Iodine.

More about the cation and the anion link is given below.

brainly.com/question/1659592

8 0
2 years ago
Which is the best estimate for the sum of 3/8 and 1/12
nirvana33 [79]
1/2. You would round 3/8 to 1/2 to 0. Then you add 1/2 to 0 and you get your answer.
7 0
3 years ago
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