I need help with 20.

Mathematics

1 answer:

irinina [24]2 years ago

3 0

Step-by-step explanation:

why ? you did it right there already.

the numerator is the top part of the fraction, the "counting" part (how many units of a certain type or size are there).

the denominator (the bottom part) is defining the type or size of units described by the fraction.

so, we are adding 4 to the numerator of 2/5, making it (2+4)/5 = 6/5

what do we need to add to the denominator (the bottom part) to make the fraction have the value of 1/2 ?

so, what x would make 6/x = 1/2 ?

6 = x/2

x = 6×2 = 12

so, we need to get 12 in the denominator, where we have currently 5.

therefore, we need to add 12-5 = 7 to it.

so that

6/(5+7) = 6/12 = 1/2

You might be interested in

-4u = 16 so what does u equal

Mamont248 [21]

-4u=16 U=16÷(-4) U= -4 To check -4(-4)=16 16=16

5 0

3 years ago

I neeed helpppp can someone help me?

SVETLANKA909090 [29]

Answer:

-8/5

Step-by-step explanation:

The thing that makes lines different from other kinds of curves is their constant rate of change. We call this rate of change slope, and you usually see it represented with the letter m. We measure it as the rate our y-coordinate changes for some amount our x-coordinate changes.

We're given the two points (-1, 4), and (4, -4). From that first point to the second one, our x-coordinate increases by 5, while our y-coordinate decreases by 8, so our change in y is -8 for every 5 in the positive x direction, and we'd write our slope as

m = -8/5

4 0

3 years ago

What is the area of a quadrilateral with vertices at (1,-1),(5,-1),(1,5),(5,5)

Elina [12.6K]

Answer:

Step-by-step explanation:

6 0

3 years ago

Explain how you know what number is missing in the equation 3,947 = 3,000 + +40+7

gavmur [86]

Answer: 900