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kotykmax [81]
3 years ago
14

I Find the determinentist of the followingmatricesi) A= (-1 1) ( 2 0) ​

Mathematics
1 answer:
USPshnik [31]3 years ago
8 0
I belive it’s c becuse hehehendnsndnnddnbdndndjdjdjjdjdndjdjdjdjdjdjdjdjdjd
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A rectangle has a length 3 times the width. What is the perimeter in terms of x?
Marina CMI [18]

Answer:

Perimeter is equal to all four sides added together.

Length = 3W; L=3W

So

P = 2(W) + 2(L)  substitute the equation for length above you get

P = 2(W) + 2(3W)  and combine

P = 2W + 6W = 8W; put in what the perimeter is and solve for W

66 = 8W, so W = 8.25

W = 8.25, L = 24.75

7 0
3 years ago
Dollar Dress Shop’s inventory at cost on January 1 was $82,800. Its retail value was $87,500. During the year, Dollar purchased
lorasvet [3.4K]

The inventory of Dollar Dress Shop at cost when the retail method is used is $117, 500.

<h3>How to find the inventory cost?</h3>

When using the Retail method to find the inventory at cost, the Beginning inventory, the purchases, and the net sales are used.

The formula for finding the cost of inventory using the retail method is:

= Beginning inventory + Purchases - Net sales

= $ 87, 500 + $ 325, 000 - $ 295, 000

= $117, 500

The inventory cost of Dollar Dress Shop with the retail method is $ 117, 500.

Find out more on inventory cost at brainly.com/question/20318114

#SPJ1

6 0
1 year ago
Read 2 more answers
Prompt:
Vadim26 [7]

Answer:

Her answer is wrong because she the object cannot hit the ground at negative seconds. She could’ve have used other methods because she used the quadratic formula. The advantages is that it works for every situation. The disadvantages is that it takes longer. She should’ve used a different method.

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
A pack of 9 toilet rolls costs £4.23
OleMash [197]
 a)  9 toilet rolls cost $ 4.23
       1 toilet roll costs  $ x

          9x = 4.23 * 1
           x= 4.23 / 9
            x = 0.47
So in first case one toilet roll costs $ 0.47.

b) 4 toilet rolls cost $1.96
    1 toilet roll costs  $ x
     
    4x = 1.96 * 1
     x = 1.96 / 4
     x = 0.49
So in second case one toilet roll costs $ 0.49.

0.47 < 0.49
The toilet roll in first case is cheaper than the toilet roll in second case.

Hope this heps!


8 0
3 years ago
Question :-
DochEvi [55]

\qquad\qquad\huge\underline{{\sf Answer}}

Let's solve ~

\qquad \sf  \dashrightarrow \:  \bigg( \dfrac{1}{ \sqrt{7 +  \sqrt{5} } }  +  \sqrt{7 +  \sqrt{5} } \bigg) {}^{2}

\qquad \sf  \dashrightarrow \:  \bigg( \dfrac{1}{ \sqrt{7 +  \sqrt{5} } } \bigg ) {}^{2}  +  \bigg( \sqrt{7 +  \sqrt{5} } \bigg) {}^{2}  + 2 \cdot \dfrac{1}{ \sqrt{7 +  \sqrt{5} } }  \cdot \sqrt{7 +  \sqrt{5} }

\qquad \sf  \dashrightarrow \: \dfrac{1}{7 +  \sqrt{5} }  + 7 +  \sqrt{5}  + 2

\qquad \sf  \dashrightarrow \: \dfrac{49 + 7 \sqrt{5} + 7 \sqrt{5} + 5 + 14 + 2 \sqrt{5}   }{7 +  \sqrt{5} }

\qquad \sf  \dashrightarrow \: \dfrac{68+ 16 \sqrt{5}    }{7 +  \sqrt{5} }

5 0
2 years ago
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