3 years ago

What is (-7) x (-3) in multiplying integers

Mathematics

2 answers:

Roman55 [17]3 years ago

6 0

.... Hope this will help....

Drupady [299]3 years ago

6 0

Answer:

Step-by-step explanation:

negative x negative = positive the negatives cancel out each other

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Substitution method- y=-x+4 and y=3x

kumpel [21]

Substitue y=3x into the other equation to get 3x=-x+4. Solve this to get 4x=4 therefore x=1.
knowing this, y=3

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3 years ago

The area of a rectangle is 256.5m2. if the length is 18m, what is the perimeter of the rectangle

Vlad [161]

256.5/18= 14.25

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3 years ago

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One question please help! Thanks guys in advance!!!

Ede4ka [16]

Y = kx
80 = 16k
k = 80/16 = 5

direct variation

The first 2 choices are corect

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3 years ago

If Usain Bolt can run a marathon (26.2) in 2 hours and 15 minutes, how fast would he run if he ran at the same constant rate?

inn [45]

Answer:

The speed of Usain Bolt is 0.194 miles per minutes to complete the marathon.

Step-by-step explanation:

Given as :

The Distance of marathon = 26.2 unit

The time taken to complete marathon = 2 hours and 15 minutes

= 120 + 15 = 135 minutes

Let The constant speed of Usain Bolt = S unit per minutes

So, Speed = $\frac{Distance }{Time}$

Or, S = $\frac{26.2 }{135}$

∴ S = 0.194 unit per minutes

Hence The speed of Usain Bolt is 0.194 miles per minutes to complete the marathon. Answer

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3 years ago

Solve each inequality -3x<12

Vlad1618 [11]

Answer:

-3x<12

/-3 /-3

x<-4

Step-by-step explanation:

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3 years ago