Answer:
x= -10
Explanation:
When solving for x with 2 equations given, you’d add 3x+10 with 7x-30 like so: 3x+10=7x-30. you ALWAYS work your way from right to left till you’ve got nothing on your right but a number with no variable, so subtract 7x with 3x, giving you 4x, so now your equation would be: 4x+10=-30. Now that there is a single number to the right, you start to rotate, so subtract 10 from -30, giving you -40, so now your equation would be: 4x=-40. This is the last step, so all you have to do is divide 4x to itself and to -40. You DO NOT add the variable x to your answer, so it should be: x=-10 as your final answer.
Answer:
a<-3
Step-by-step Explanation:
Divide both sides of the inequality by -2
The rule with inequalities is that if you divide or multiply both sides is the inequality by a negative number, then the inequality sign flips.
-2a>6
a<-3
Answer: 50
Explanation: 2/5x - 2 = 18
Divide the fraction to make a decimal
2 ÷ 5=0.4
0.4x-2=18
0.4x=20 Add 2 to 18
20 ÷ 0.4=x Divide 20 by 0.4 to get x
x=50
The exponent of -9 indicates the decimal point has been moved 9 places to the right. Undo that.
= 0.00000000614
DEF is congruent to D’E’F’ because DEF is the same shape and size as D’E’F’
