If the sum of a number and four is doubled, the result is one less than the number. Find the number.
1 answer:
Answer:
Step-by-step explanation:
Equation
2(x + 4) = x - 1
Solution
2x + 8 = x - 1 Subtract x from both sides
2x-x + 8 = - 1 Combine the left
x + 8 = - 1 Subtract 8 from both sides
x + 8-8 = - 1-8
x = - 9
Check
<em>LHS</em>
2(-9 + 4)
2(- 5)
-10
<em>RHS</em>
-9 - 1
- 10
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10 8\10 regular
A=30
Multiply base times height and then divide by 1/2
(3 3/4)(4)=15
15/(1/2) = 30
Answer:
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Step-by-step explanation:
1.C
2.A
3.B
4.A
5.C
6.B
7.A
8.C
9.B
10.A
-4/9 x 5/8 = -20/72 or -5/18
The solution is 2
( x = 2 )
