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denis23 [38]
3 years ago
7

Solve the linear equation below for x. * 3x + 4 = 8x – 9 A. 2.6 B. 1 C. 1.09 D. 2

Mathematics
1 answer:
Juli2301 [7.4K]3 years ago
6 0
This answer is A, first you subtract 3x from both sides simplify 8x-9-3x to 5x-9, add 9 to both sides, simplify 4+9 to 13, divided both sides by 5 and you’ll get 2.6
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7 0
2 years ago
Read 2 more answers
The difference of two numbers is 15. Five times the smaller is the same as 9 less than twice the larger. Find the numbers
Usimov [2.4K]

Answer:

x= -13

y= -28

Step-by-step explanation:

To find the two numbers, write a system of equations with x as one number and y as another:

x-y=15

5x=2y-9

Use substitution to substitute one equation into another. Then solve for the variable.

x=15+y into 5x=2y-9

becomes

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75+3y= -9

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y= -28

To find x, substitute y= -28 into one equation.

x - (-28) = 15

x+28 =15

x = 15-28

x=-13




6 0
3 years ago
Find the area of these shapes AND explain your method <br> Can some one help me :((
-Dominant- [34]

Answer:

Triangle - 21 units

Trapezoid - 65 units

Step-by-step explanation:

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  • Note you won't be able to do this when solving for the area of ALL trapezoids and triangles.

4 0
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