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ser-zykov [4K]
4 years ago
8

What is x? -3(2x-7)+5=2x-9

Mathematics
2 answers:
vitfil [10]4 years ago
4 0

Answer:

x=4.375

Step-by-step explanation:

-3(2x-7)+5=2x-9

-6x+21+5=2x-9

-6x+26=2x-9

-6x-2x+26=2x-2x-9

-8x+26=-9

-8x+26-26=-9-26

-8x=-35

-8x/-8=-35/-8

x=4.375

True [87]4 years ago
3 0

Answer: 35/8     or     4\frac{3}{8}

<u>Simplify each term</u>

<u></u>-3(2x)-3-7+5=2x-9<u></u>

<u></u>-6x-3-7+5=2x-9<u></u>

<u></u>-6x+21+5=2x-9<u></u>

<u></u>-6x+26=2x-9<u></u>

<u></u>

<u>Move all terms containing x to the left side of the equation</u>

<u></u>-6x+26-2x=-9<u></u>

<u></u>-8x+26=-9<u></u>

<u></u>

<u>Move all terms not containing x to the right side of the equation.</u>

<u></u>-8x=-9-26<u></u>

<u></u>-8x=-35<u></u>

<u></u>

<u>Divide each term by − 8 and simplify.</u>

<u></u>-8x/-8=-35/-8<u></u>

<u></u>

<u>Note</u>

Dividing 2 negative will give you a positive answer.

x=35/8

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3 years ago
What is a three digit number thats an odd multiple of three and the product of its digits is 24 and is larger than 15 squared?
Reika [66]
The only way 3 digits can have product 24 is 
1 x 3 x 8 = 241 x 4 x 6 = 242 x 2 x 6 = 242 x 3 x 4 = 24
So the digits comprises of 1,3,8 or 1,4,6, or 2,2,6, or 2,3,4 
To be divisible by 3 the sum of the digits must be divisible by 3.
1+  3+ 8=12, 1+ 4+ 6= 11, 2 +2 + 6=10, 2 +3 + 4=9Of those sums of digits, only 12 and 9 are divisible by 3. 

So we have ruled out all but integers whose digits consist of1,3,8, and 2,3,4.

Meanwhile they must be odd they either must end in 1 or 3.
The only ones which can end in 1 are 381 and 831.

The others must end in 3. 

They must be greater than 152 which is 225. So the

First digit cannot be 1. So the only way its digits can contain of1,3,8 and close in 3 is to be 813.

The rest must contain of the digits 2,3,4, and the only way they can end in 3 is to be 243 or 423.  
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7 0
3 years ago
What is the distance between (-5, 3) and (7, 3)?
Ksivusya [100]

Answer:

12

Step-by-step explanation:

7+5

7 0
3 years ago
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The point ( 3,0) lies on a circle with the center at the origin. What is the area of the circle to the nearest hundreth
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3 years ago
X varies directly as y. If x is 9 when y is 4, find x when-y is 8.
jeka94

Answer:

see explanation

Step-by-step explanation:

Given x varies directly as y then the equation relating them is

x = ky ← k is the constant of variation

To find k use the condition x = 9 when y = 4

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When y = 8, then

x = 2.25 × 8 = 18

4 0
3 years ago
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