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inn [45]
3 years ago
7

Matrices A and B shown below are equal.

Mathematics
1 answer:
bogdanovich [222]3 years ago
6 0

Answer:

-18

Step-by-step explanation:

see attachment for the figure.

If the two matrices are equal.  In this way, the amount in the upper, right-hand corner of A (which is - 18) is equivalent to the amount in the upper, right-hand corner of B, which is b₁₂

Therefore, the first answer choice (-18) is the correct one.

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A company surveyed 1000 people on their age and the number of jeans purchased annually. The results of the poll are shown in the
Solnce55 [7]

Answer:

a) 0.437; b) 0.291

Step-by-step explanation:

For part a,

There are 280+210 = 490 people that are over 18 years old.  Out of these, 119+95 = 214 purchase 2 pairs of jeans annually.  This is

214/490 ≈ 0.437

For part b,

There are 87+69+74+11 = 241 people who purchase 3 or more pairs of jeans.  There were a total of 220+290+280+210 = 1000 people; this means there were 759 people tho purchased fewer than 3 pairs of jeans.  

Out of these, 21+74+126 = 221 were in the age group 12-18.  This gives us

221/759 ≈ 0.291

8 0
3 years ago
-5n = -6n – 4<br> Can't figure out this equation need help on solving for n
IrinaVladis [17]
Remember you can do anything to an equatino as long as you do it to both sides
add 6n to both sides
6n-5n=6n-6n-4
1n=0n-4
n=-4
3 0
3 years ago
Please answer the question below:
lawyer [7]

Answer:

(C) rain droplets

Step-by-step explanation:

um its right

3 0
3 years ago
Read 2 more answers
Need help on this loviesss
aev [14]

Step-by-step explanation:

perimeter of triangle = s + s + s

perimeter of given triangle = 22 + 17 + 14

                                             = 53 cm

therefore, perimeter of given triangle is <em>53 cm</em>

7 0
4 years ago
What is 39/17 rounded to the nearest tenth
insens350 [35]

Answer:

2.3

Step-by-step explanation:

What I did was I divided it till I got it to the hundredth place and it came out to 2.29. You need it to the tenth place so you have to round up to 2.3.

4 0
4 years ago
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