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2 years ago

7

Ms. Mackey had a block of clay. She gave each of 3 students an equal part of the block of clay. She then asked each of them to c

ut the part of clay she gave them into 5 equal-sized cubes. What fraction of Ms. Mackey's block of clay does each of the cubes represent?

2 answers:

Whitepunk [10]2 years ago

8 0

Step-by-step explanation:

The answer is 1/15.

zavuch27 [327]2 years ago

4 0

I got 1/5 I hope this help also not sure if correct

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What the answer for number 9 ??

ivolga24 [154]

72 pieces
--------------

7 0

3 years ago

All the info is in the pictures

Hunter-Best [27]

Bearing in mind that an absolute value expression is in effect a piece-wise function with two cases, thus

$\bf |-n|=
\begin{cases}
+(-n)\\
-(-n)
\end{cases}\implies 
\begin{cases}
-n\\
n
\end{cases}
\\\\\\
n|-n|=2n\implies 
\begin{cases}
n-n=2n\implies 0=2n\implies &0=n\\
n+n=2n\implies 2n=2n\impliedby &inconsistent
\end{cases}$

6 0

3 years ago

Pls help me! 19 and 20.

Murljashka [212]

Answer:

See below ↓

Step-by-step explanation:

19.

$\frac{x-1}{2} - \frac{x-3}{5} - \frac{x-7}{10} + \frac{x-2}{5}$
$\frac{5(x-1)-2(x-3)-(x-7)+2(x-2)}{10}$
$\frac{5x-5-2x+6-x+7+2x-4}{10}$
$\frac{4x+4}{10}$
$\frac{2x+2}{5}$

20.

$\frac{2x+3}{2x} + \frac{x+3}{4x} - \frac{18x+6}{8x^{2} }$
$\frac{4x(2x+3)+2x(x+3)-(18x+6)}{8x^{2} }$
$\frac{8x^{2} +12x+2x^{2} +6x-18x-6}{8x^{2} }$
$\frac{10x^{2}-6}{8x^{2} }$
$\frac{5x^{2}-3}{4x^{2} }$

4 0

2 years ago

Conrad has 11 containers for his toys. He put 17 toys in each container. How many toys did he put away in all? *

ArbitrLikvidat [17]

Answer:

A child's toy consists of a piece of plastic attached to a spring in the figure below. The spring is compressed against the floor a distance of 2.00 cm, and the toy is released. If the toy has a mass of 117 g and rises to a maximum height of 45.0 cm, estimate the force constant of the spring.

Step-by-step explanation:

6 0

3 years ago

on a standardized exam the scores are normally distributed with a mean of 70 and a standard deviation of 20. find the z of a per

KIM [24]

The z-score of a person who scored 128 on the exam is equal to 2.9

<h3>What is a z-score?</h3>

A z-score is also referred to as a z-value or standard score and it can be defined as a measure of the distance between a raw score and the mean, when standard deviation units are used.

Mathematically, the z-score of a given sample score in a normal distribution can be calculated by using this formula:

$z=\frac{x\;-\;u}{\sigma}$

Where:

x represents the sample score.
u represents the mean score.
σ represents the standard deviation.

Substituting the given parameters into the formula, we have;

Z-score, z = (128 - 70)/(20)

Z-score, z = 58/20

Z-score, z = 2.9

Read more on z-scores here: brainly.com/question/26714379

#SPJ1

5 0

1 year ago