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ryzh [129]
3 years ago
9

Two___ diagrams are___ equivalent when hey have a place fro all the same items.

Mathematics
1 answer:
Volgvan3 years ago
3 0
Two Venn diagrams are not equivalent when they have a place for all the same items.
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Which vectors represent the reflection of the vector across the x-axis?
andrew-mc [135]

Answer:

<3, 7> and [3 7], b and c

Step-by-step explanation:

multiply the vector by the matrix {1 0} (top row) {0 -1} bottom row. So you flip the sign of the -7 and this gives us +7.

8 0
3 years ago
In ∆ASR, W, E and N are midpoints. Determine the lengths of each segment using the number bank.
NikAS [45]

9514 1404 393

Answer:

  A)  AS = 60

  B)  WE = 20

  C)  EN = 25

  D)  AR+RS-AS = 30

Step-by-step explanation:

Each midsegment is half the length of the parallel side. Each side is twice the length of the parallel midsegment.

A) AS = 2(WN) = 2(30) = 60

B) WE = RS/2 = 40/2 = 20

C) EN = AR/2 = 50/2 = 25

D) AR +RS -AS = 50 +40 -60 = 30

5 0
3 years ago
A developer sold an apartment complex for $606,150. She had purchased the complex years earlier for $449,000. What percent of th
Juli2301 [7.4K]
She marked down the price of the apartment by 26%. This is because of this equation (Percent change=Amount of change divided by the original number and then multiply by 100)
5 0
3 years ago
3x-y+z=-15<br> x+2y-z=1<br> 2x+3y-2z=0
Kazeer [188]
I assume you are being asked to solve these equations.  Since there wasn't an explanation as to how you are expected to solve them, I chose to demonstrate how to use a calculator matrix function. You can find matrix calculators online.  My instructions are for a TI-84
Push the blue 2nd button then push x^-1 button (it says matrix above this button in blue)
Arrow over to edit to change the dimensions of the matrix and to put in your values.  You have 3 equations (3 rows) and 4 terms (4 columns) so you put a 3x4 in for the dimension and the coefficients (see images).
You use the rref option in the math column in matrix to calculate the answer. 
The numbers at the end are the solutions. x = -4, y = 2, z = -1

5 0
4 years ago
#9 please help me it is so hard
navik [9.2K]

Answer:

Step-by-step explanation:

What aremmyou talking a out

5 0
4 years ago
Read 2 more answers
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