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3 years ago

Meredith read 21 out of 40 chapters of her library book What decimal represents the part of the chapters she has NOT yet read?

1 answer:

7 0

If she read 21/40, this means that she hasn’t read 19 of the 40 chapters.

You can divide 19/40 to get the decimal
19/40=0.475

Hope this helps!! :)

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What is the L.C.M of 45 80 and 135

Vinvika [58]

Answer:

LCM = 2160

Step-by-step explanation:

lcm of 45 80 and 125 is 2160 because LCM = 2160

6 0

3 years ago

Read 2 more answers

Which of the following is an example of an open equation? 5x + 7 = 12 , 12 + (-8) = 4 , 25 = 5 (5) , 8 + 0 =8

spayn [35]

An open equation is an equation that contain one or more unknow variables.

And that/those variable(s) can be found by solving the equation that make the equation true.

A variable is an English alphabet.

For example, a,b, x, y,z etc.

A variable represents a unknow value for a particular quantity.

In the given options 5x + 7 = 12 , 12 + (-8) = 4 , 25 = 5 (5) , 8 + 0 =8 .

In first option, we have unknow variable x is there.

But in all other options we don't value any variable.

Therefore, all other options can't be open equation.

So, final answer is 5x + 7 = 12 is the only open equation in given options.

7 0

3 years ago

Use substitution to solve this problem<br>a=5, b=2<br>5a - b = ‽<br>

Rom4ik [11]

Plug the numbers into the equation

5(5) - 2 = ?

25 -2 = 23

23

3 0

3 years ago

The owner of a retail store is tracking his inventory for an annual report. The graph shows the remaining inventory for a partic

aliina [53]

Y = -2.8x +69.4

Let y represent units of inventory, and x represent days since the last replenishment. We are given points (x, y) = (3, 61) and (13, 33). The line through these points can be described using the 2-point form of the equation of a line:
... y -y1 = (y2-y1)/(x2 -x1)(x -x1)
Filling in the given point values, we have ...
... y -61 = (33 -61)/(13 -3)(x -3)
Simplifying and adding 61, we get ...
... y = -2.8x +69.4

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3 years ago

Proving Pythagorean Theorem

MrRissso [65]

Answer:

Step-by-step explanation:

${a}^{2} + {b}^{2} = {c}^{2}$

ssubstitute a and b for any of the numbers (3 or 6) and get 36+9 which is 45

45 =

${c}^{2}$

so you would need to find the square root to get c

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2 years ago

Meredith read 21 out of 40 chapters of her library book What decimal represents the part of the chapters she has NOT yet read?​

Meredith read 21 out of 40 chapters of her library book What decimal represents the part of the chapters she has NOT yet read?