<h2>X = 9</h2><h3></h3><h3>All of the equations are equal since it is an equilateral triangle.</h3><h3>So, just pick two equations and solve them.</h3><h3 /><h3>3x - 1 = 2(x + 4)</h3><h3>distribute</h3><h3>3x - 1 = 2x + 8</h3><h3>add 1 to both sides</h3><h3>3x = 2x + 9</h3><h3>subtract 2x from both sides</h3><h3>x = 9</h3><h3 /><h3>DOUBLE-CHECK (If you want to)</h3><h3>4x ÷ 2 + 8 = 3x - 1</h3><h3>subtract 8 from both sides</h3><h3>4x ÷ 2 = 3x - 9</h3><h3>simplify</h3><h3>2x = 3x - 9</h3><h3>subtract 3x from both sides</h3><h3>-x = -9</h3><h3>divide both sides by -1</h3><h3>x = 9</h3><h3 /><h3>TRIPLE-CHECK (If you want to)</h3><h3>4x ÷ 2 + 8 = 2(x + 4)</h3><h3>simplify</h3><h3>2x + 8 = 2x + 8 (It's already equal)</h3>
If 5 biscuits cost 40p
1 biscuit would cost (40p divided by 5) 8p
8p multiplied by 3 (to get 3 biscuits) would cost 24p
3 biscuits cost 24p
Answer:
210
Step-by-step explanation:
we have given significance level α=3% =0.03
level of significance is nothing but the chances of rejecting a null hypothesis by the test when it given that it is correct. it is denoted by α it also defined as the
level of significance =1 - confidence level
now statistically significant test =0.03×7000=210
so the expected value of statistical significant is 210
