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Crank
3 years ago
7

Find 3x-y-3z if x=-2, y=1, z=-2

Mathematics
1 answer:
andriy [413]3 years ago
5 0

Answer:

-

Step-by-step explanation:

Answer is - 1 , but can't show work with smart phone. Don't own computer.

Use my head for most numbers. Sorry

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HELPP HELP. It’s about slope!!!! Explanation needed
OleMash [197]

Answer:

<em> x = -3</em>

Step-by-step explanation:

A line has equation: y = ax + b

This line has slope a = 1

This line passes (4, 1)

=> 1 = 4 + b

=> b = -3

=> The equation of this line : y = x - 3

This line passes another point (x, -6)

=> -6 = x - 3

=> x = -6 + 3

=> x = -3

3 0
3 years ago
What is the solution to the system of equations shown below?
goblinko [34]

Answer:

  b.  (2, 5, 3)

Step-by-step explanation:

Trying the offered choices seems the fastest way to find the answer. The second choice works in all equations, hence is the solution.

Another strategy you can use is to see if the equations are dependent. Here, it looks like adding twice the third equation to the other two eliminates at least the x- and y-variables. If that eliminates z, then there are infinite solutions. Instead, it gives the equation ...

  7z = 21

  z = 3 . . . . . divide by 7

This answer is consistent with choice B, confirming that answer and eliminating the other choices.

5 0
3 years ago
Read 2 more answers
Use the remainder Theorem to find the remainder for the given division. (16z^4-1)/(z+1)
Mice21 [21]

Remainder Theorem: when a polynomial <em>P(x) </em>is divided <em>by (x - a), </em>the remainder is <em>P(a).</em>

<em />

Given expression:

\frac{16z^{4}-1}{z+1}

In this case:

P(z)=16z^4-1z=-1

To know the reminder, we have to plug in the value of <em>z </em>in the polynomial:

P(-1)=16(-1)^4-1

Simplifying:

P(-1)=16(1)^{}-1P(-1)=16^{}-1P(-1)=15

Answer: The remainder is 15.

7 0
1 year ago
The students in the Go Green dub started a whool recling program. In
OlgaM077 [116]

Answer:

Students collected

  • 85+255=340 pounds of paper;
  • 18+90=108 pounds of cans;
  • 340+108=448 pounds of paper and cans combined in September and October.

Step-by-step explanation:

In September, the students collected 85 pounds of paper and 18 pounds of cans to recycle.

In October, their goal is to collect three times the amount of paper and five times the amount of cans they collected in September.

Hence, in October they collected

  • 85\times 3=255 pounds of paper;
  • 18\times 5=90 pounds of cans.

In total, they collected

  • 85+255=340 pounds of paper;
  • 18+90=108 pounds of cans;
  • 340+108=448 pounds of paper and cans combined in September and October.
3 0
3 years ago
Z-12=4<br><br> what is Z worth?
Gnoma [55]

Answer:

Z=16

Step-by-step explanation:

just add 12 to both sides so you are left with only Z on one side

5 0
3 years ago
Read 2 more answers
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