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gtnhenbr [62]
3 years ago
5

Verifya x (b+c) = a x b + a x c for a =-1/6 b=4/7 c=-2/5​

Mathematics
1 answer:
SVETLANKA909090 [29]3 years ago
3 0

Step-by-step explanation:

✓(-1/6×4/7)+(-1/6×-2/5)

✓(-4/42)+(2/30)

✓(-2/21)+(1/15)

✓(-2/21+1/15)

=-<u>1/35</u>

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Katherine is landscaping her home with juniper trees and pansies. She wants to arrange 15 pansies around each of 8 trees. Each t
Tom [10]

The mathematical expression that Katherine requires to know the price of the objects that she is going to buy is 8 * ($20.75) + 120 * ($5/12) = $216

<h3>How to write an expression for this procedure?</h3>

To find a mathematical expression for this procedure we must take into account the values that we know.

For example, we know that it requires 15 pansies for each tree. This can be expressed like this:

  • 15 * 8 = 120 pansies.

On the other hand, we must calculate the price of each tree and the pansies that are going to be used to surround each one as shown below.

  • Cost of trees = 8 * $20.75
  • Pansies Cost = 15 * ($5/12)

According to the above, the final expression, in which all the necessary data for Katherine is included, is:

  • 8 * ($20.75) + 120 * ($5/12) = $216

Learn more about mathematical expression in: brainly.com/question/1703934

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7 0
2 years ago
A golf pro wants to determine if Titleist Pro V1 golf balls (1) travel farther, on average, than Callaway Chrome Soft golf balls
Greeley [361]

Complete options are;

A) Paired t-test for means

B) Paired Z-test for means

C) Z-test for proportion

D) t-test for means

E) Z-test for means

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Answer:

B) Paired Z-test for means

Step-by-step explanation:

We are told that the distances travelled are normally distributed.

We are also trying to find out if the average distance travelled by the Titleist Pro V1 golf balls is farther than that of the Callaway Chrome Soft golf balls.

Also, the standard deviation of both cases are known.

Thus, this is where Paired Z-test for means is used.

4 0
2 years ago
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Scilla [17]

Answer:

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3 0
3 years ago
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Bogdan [553]

Answer:

x = -8

Step-by-step explanation:

Distribute on both sides

combine constants

combine variables

then divide

6 0
3 years ago
Read 2 more answers
23 please help thanks no link or i will report
NARA [144]

how many students got 90 or less = 14

how many students got more than 90 = 11

3 more students got 90 or less so answers is D. 3

please mark brainliest

4 0
2 years ago
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