Answer:
Step-by-step explanation:
2. 2(3x+4)=10
6x+8=10
6x+8-8=10-8
6x=2
x= 1/3
3. 2x + 7 = 5x + 16
7 + 2x = 5x + 16
7 + 2x = 16 + 5x
7 + 2x + -5x = 16 + 5x + -5x
7 + -3x = 16 + 5x + -5x
7 + -3x = 16 + 0
7 + -3x = 16
7 + -7 + -3x = 16 + -7
0 + -3x = 16 + -7
-3x = 16 + -7
-3x = 9
x = -3
4. x/3-8=-2
x/3=6
x=18
5. 3x-6=-12
3x-6+6=-12+6
3x=-6
x=-2
sorry but i cannot solve 1 or 6 because i am quite stupid
18 = 10 + 2k
move 10 to the other side
sign changes from +10 to -10
18-10=10-10+2k
18-10= 2k
8= 2k
divide by 2 to get k by itself
8/2= 2k/2
Cross out 2 and 2 , divide by 2 and then becomes 1*1*k= k
k=8/2
Answer: k= 4
Answer:
5%+15%=20%
to find 20% of 28 u multiply 28 x 0.2= 5.6
so to remove the 20% since it's 20% off u subtract 5.6 from 28
28-5.6= 22.4
Step-by-step explanation:
The percentage error is 23%
Explanation:
The estimated total cost of the groceries = $50
The actual cost of the groceries = $65
To find the error value, we need to subtract the value of actual cost and total cost of the groceries.
Thus,
error value = actual cost - total cost
error value 
Hence, error value = $15
The formula to determine the percent error is given by
Substituting the values in the formula, we get,
Rounding off the value, we have, 23%
Thus, the percentage error is 23%
Answer:
Yes it can because an isoseles triangle is just a triangle with two equale sides
Step-by-step explanation:
