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irga5000 [103]
3 years ago
6

Find 5x − 3y − z if x = −2, y = 2, and z = −3 −19 19 13 −13

Mathematics
1 answer:
Blababa [14]3 years ago
8 0
5x - 3y - z
By hypothesis, x = -2, y = 2 and z = -3.

So you all need to do is replace each letter by its value and do the calculus:

5x - 3y - z = 5*(-2) - 3(2) - (-3)
= -10 - 6 + 3=
=-16 + 3
= -13

So when x = -2, y = 2 and z = -3
5x - 3y - z = -13 (answer d)

Hope this helps! :)
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5 0
4 years ago
A student collected monetary pledges for a fundraiser. One donor pledged to contribute $5 for each mile walked by the student du
Snezhnost [94]

Answer:

A. The situation is discrete B. i. { x : 0 ≤ x ≤ 6; x ∈ Z} ii. { C = 5x : 0 ≤ C ≤ 30; C ∈ Z}

Step-by-step explanation:

A. The situation is discrete since we have integral values for the amount paid per mile walked. The amount per mile is $5 and is only paid if a complete mile is walked. So, it is a discrete situation.

B. i. Since 0 miles represents 0 distance and the student walks a maximum of 6 miles, let x represent the distance walked. So the domain is 0 ≤ x ≤ 6 where x ∈ Z where Z represent integers.

{ x : 0 ≤ x ≤ 6; x ∈ Z}

ii. Since at 0 miles the amount earned is 0 miles × $5 per mile = $ 0 and at the maximum distance of 6 miles, the amount earned is 6 miles × $5 per mile = $ 30, let C represent the amount donated in dollars. So the range is 0 ≤ C ≤ $ 30 where C = 5x.

{ C = 5x : 0 ≤ C ≤ 30; C ∈ Z}

6 0
3 years ago
The two triangles are similar. What is the value of x?
Ghella [55]

Answer:

x=5

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We can write ratios to help us solve

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---------- = ------------

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Subtract 45x from each side

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What are the solutions to the equation (10−x)(3x−9)=0?
Afina-wow [57]

Answer:

10−x)(3x−9)=0

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8 0
3 years ago
Read 2 more answers
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