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irga5000 [103]
3 years ago
9

Solve each system using a matrix. 4x-12y=-1 6x+4y+4

Mathematics
1 answer:
FrozenT [24]3 years ago
8 0
[1 0 -13/22]
[0 1 -5/44] 
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Please help and thanks ​
pav-90 [236]

Answer: Bottom left corner

Angle DEC and Angle DEH

=============================================================

Explanation:

I recommend opening your favorite paint program, and using different colors to mark on the drawing as I have done below (see attached image). Note how angle DEC is in red and angle DEH is in blue. The two angles are adjacent, meaning they share the same ray (in this case, ray ED) and they form a straight angle.

Because they form a straight angle, or straight line, this means the two angles are supplementary. Supplementary angles always add to 180.

4 0
3 years ago
Which of these is an example of multi-stage sampling?
zlopas [31]

Answer:

The answer is D.) Choosing New York as a sample, then selecting a sample of zip codes within New York, then sampling the names of people living in those zip codes.

Explanation:

When you use multistage sampling, you take a sample from a population by breaking it down into smaller and smaller groupings (units) at each stage. It's frequently used in nationwide surveys to collect data from a big, geographically dispersed group of people. I hope I helped! ^-^

5 0
3 years ago
After being filled, a basketball loses 3.2% of its air every day. Considering that the initial volume of the ball was 840 cubic
Sliva [168]

Answer:

volume = 840 cubic cm

(3.2/100)×840= 26.88 per day

after 4 days = 26.88×4=107.5

answer is 107.5

8 0
2 years ago
Read 2 more answers
Can someone help me with this question please?!
Alborosie

Answer:

H. $26

Step-by-step explanation:

$6.50 x 4 = 26. The cost is exact.

7 0
3 years ago
PLEASE hELp ASAP WILL MARK BRAINLIEST!
raketka [301]

Answer:

Its b

Step-by-step explanation:

The number line is saying people spend 70 n below.

5 0
3 years ago
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