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erma4kov [3.2K]
4 years ago
13

Find the value of x. (7x + 9) (2x - 18) x = 12 0000 x = 16 x = 21 x= 24

Mathematics
1 answer:
Salsk061 [2.6K]4 years ago
5 0

Answer:12

Step-by-step explanation:

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Solve <img src="https://tex.z-dn.net/?f=%5Cfrac%7B2x-10%7D%7B4%7D" id="TexFormula1" title="\frac{2x-10}{4}" alt="\frac{2x-10}{4}
GREYUIT [131]
X = -1!
1. Factor out 2 from the expression : 2(x-5) / 4 = 3x
2. Reduce the fraction with 2 : x-5 / 2 = 3x
3. Multiply both sides of the equation by 2 : x-5=6x
4. Move the terms : x - 6x = 5
5. Collect like terms : -5x = 5
6. Divid both sides by -5
Hope this helps!
8 0
3 years ago
The units digit of a two digit number is 4 times the tens digit. If the digits are reversed, the new number is 54 more than the
Ratling [72]
The numbers are 82 and 28. 
5 0
3 years ago
The sandbox at a playground is 2 feet tall.The area of the base of the sandbox mis 80 square feet.How much sand does it take to
s2008m [1.1K]
It will take 160 sand to fill it u
8 0
3 years ago
The sum of Ellie's age and Genya's age is 60. In six years, Genya will be eight times as old as Ellie. How old is Ellie now?
ArbitrLikvidat [17]

Answer:

<u>2 years old</u>

Step-by-step explanation:

Let Ellie's age ⇒⇒⇒ x

And Genya's age ⇒⇒⇒ y

∵ The sum of Ellie's age and Genya's age is 60

∴ x + y = 60 ⇒ (1)

∵ In six years, Genya will be eight times as old as Ellie

∴ (y + 6) = 8 (x+6)

∴ y + 6 = 8x + 48       subtract 6 from both sides

∴ y = 8x + 42 ⇒ (2)

By substituting from 2 at 1 with the value of y

∴ x + (8x + 42) = 60

∴ 9x = 60 - 42 = 18

∴ x = 18/9 = 2

∴ y = 60 - x = 58

So, Ellie's age now = 2 years old

And Genya's age = 58 years old

6 0
3 years ago
Please answer ASAP worth 10marks <br> (will also mark Brainiest<br> )
labwork [276]

Answer:

1. [-1,10]

[-3, 9]

2. [-1, 5]

[-12,20]

3. [-6,15]

[-13,19]

4. (I cant read)

5. [30]

6.[20,-10]

[-20,10]

Step-by-step explanation:

4 0
3 years ago
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