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sp2606 [1]
3 years ago
9

Can sumbody help meh wit dis plz and ty .I’ll give ya 14 points

Mathematics
2 answers:
andre [41]3 years ago
6 0

Answer:

1. is 5  

2. is -4

3. is -24

Step-by-step explanation:

i dont understand why you didnt just use a calculator but here.

aliina [53]3 years ago
4 0

Answer:

Step-by-step explanation:

1) x + 7 = 12

Add the additive inverse of 7  = -7 to both sides

x + 7 - 7 = 12 - 7

x + 0 = 5

x = 5

2) 7a = -28

Divide both sides by 7

7a/7 = -28/7

a = -4

3)\frac{y}{8}= -3\\\\

Multiply both sides by 8

\frac{y}8}*8=-3*8\\\\y=-24

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Can you help me plz
Alex73 [517]

9514 1404 393

Answer:

  y = x + 4

Step-by-step explanation:

To find the constant in the equation, look in the table for the value of y when x=0. That value is 4, so ...

  y = x + 4

6 0
3 years ago
#1 2x-16<-18
Evgesh-ka [11]

Answer:

if it's finding x

#1 x<-1

#2 x<4

Step-by-step explanation:

#1

2x-16<-18

add 16 to both sides

2x<-2

then divide 2 to both sides

x<-1

#2

2x-16+4x<8

add like terms

6x-16+<8

add sixteen to both sides

6x<24

divide six to both sides

x<4

5 0
3 years ago
I need help with all 4 of these . And I do need to show work for all of them
malfutka [58]

Answer:


Step-by-step explanation:

11) Profit = Selling price - purchase price - other expenses

= (2000*7)-12780-26=1194

12)  Profit = Selling price - purchase price - other expenses

=52.25(550)-28275-32=430.50=430(after rounding off)

13) Annual interest on bond

=INterest rate on face value of bond for 1 year

=2000(6%)=120

14)Cost of bond

= quoted value (rate)

=3500(80.5)

=2817.50

15) Cost of bond

= quoted value (rate)

=4250(83.5)

=3548.75


3 0
3 years ago
Please help me immediately ​
saw5 [17]

Answer:

756

Step-by-step explanation:

In the last question the volume of the tank was 168 m³

so to find the cost multiply 168 and 4.5

  • 168*4.5 =756

it will cost 756

7 0
3 years ago
Read 2 more answers
What is the form of the Difference of Cubes identity?
scoray [572]

Solution:

The difference of cubes identity is

if a and b are any two real numbers, then difference of their cubes , when taken individually:

→a³ - b³= (a-b)(a² + a b + b²)→→→Option (D) is true option.

I will show you , how this identity is valid.

Taking R H S

(a-b)(a² +b²+ab)

= a (a² +b²+ab)-b(a² +b²+ab)

= a³ + a b² +a²b -b a² -b³ -ab²

Cancelling  like terms , we get

= a³ - b³

= L H S



4 0
3 years ago
Read 2 more answers
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