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katovenus [111]
2 years ago
9

Simplify: 9x² - 4x - 3= [?] X=-2

Mathematics
1 answer:
Bess [88]2 years ago
4 0

Answer:

41

Step-by-step explanation:

Given x = -2,

Substitute x into the expression.9x^{2} -4x-3=9(-2)^{2} -4(-2)-3\\= 9(4)-4(-2)-3\\= 36+8-3\\=44-3\\=41

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An online furniture store sells chairs for $200 each and tables for $600 each. Every
Vladimir79 [104]

Answer:

Step-by-step explanation:

Answer:

If the minimum 13 chair were sold , then the minimum number of Table sold is 14

Step-by-step explanation:

Given as :

The cost of each chair = $ 200

The cost of each table = $ 600

The total number of furniture sold per day = 32

The minimum amount of selling per day = $ 12000

Let the total number of chair = C

The total number of table = T

So , according to question

C + T = 32         .......1

200 C + 600 T = 12000         .......2

Solving eq 1 and 2

200 C + 600 T = 12000

200 × ( C + T ) = 32 × 200

I.e 200 C + 200 T = 6400

or, ( 200 C + 600 T ) - ( 200 C + 200 T ) = 12,000 - 6400

Or, 400 T =  5600

∴  T =

I.e T = 14

Put The value of T in eq 2

So, 200 C + 600 × 14 = 12000

or , 200 C + 8400 = 12,000

Or, 200 C = 12000 - 8400

Or, 200 C = 3600

∴   C =

I.e C = 18

The number of chair sold is 18

If the number of chair sold is 13 ,

Then the min number of table sold = 200 × 18 + 600 T = 12000

i.e 600 T = 12000 - 3600

or, 600 T = 8400

∴   T =

I.e T = 14

Hence if the minimum 13 chair were sold , then the minimum number of Table sold is 14 . Answer

8 0
3 years ago
What is 21/35 in its simplest form?
Leno4ka [110]

21/35

use the 7 times table

divide the fraction by 7

21/7= 3

35/7= 5

Answer:

3/5

6 0
3 years ago
Read 2 more answers
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