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3 years ago

Help pls D; I’ll mark brainliest :D

Mathematics

1 answer:

amm18123 years ago

6 0

Answer:

6, -6 is the answer

36 is in the second quadrant that’s why.

Step-by-step explanation:

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one hundred forty countries participated in the 1984 summer olympics in los angeles. this was 75% more than the number of countr

Cloud [144]

Answer:

80 countries participated in the 1980 olympics in Moscow.

Step-by-step explanation:

Hello, I think I can help you with this

You can solve this by using a simple rule of three

Step 1

define

140 countries participated in 1984,this was 75% more than the last time,this means that 140 is the 175% of a value that we need to know

140 ⇔175%

x? ⇔100%

the relation is

$\frac{140}{175}=\frac{x}{100}$

Step 2

solve for x

$\frac{140}{175}=\frac{x}{100}\\x=\frac{100*140}{175}\\x=\frac{14000}{175} \\x=80$

80 countries participated in the 1980 olympics in Moscow.

Have a nice day

6 0

3 years ago

How can you tell when an equation in one variable has infinitely many soultions or no solution

torisob [31]

By if it is negative or positive

3 0

3 years ago

in a farm there are 600 mango trees. the number of trees in each row is 10 less than twice the number of rows. does each row hav

iren [92.7K]

The area of the farm is the number of trees on it.

Each row of the farm does not have 50 trees

Let

$x \to$ number of rows

$y \to$ number of trees in each row

So, we have:

$y = 2x - 10$ --- twice less than the number of rows

The area of the farm is:

$Area = x \times y$

Where

$Area = 600$ --- the number of trees

So, we have:

$x \times y = 600$

Substitute $y = 2x - 10$

$x \times (2x - 10) = 600$

Substitute 50 for x

$50 \times (2 \times 50 - 10) = 600$

$50 \times (100 - 10) = 600$

$50 \times 90 = 600$

$4500 = 600$

The above equation is not true.

This means that, each row does not have 50 trees