Answer:
x=71 degrees
Step-by-step explanation:
it is a isosceles triangle so the blank angle is also x
angles of a triangle add up to 180
180=38+2x
2x=142
x=71
The problem is asking you to solve the equation
<em>y</em> = 12<em>x</em> + <em>n</em>
for the variable <em>n</em>. To do this, subtract 12<em>x</em> from both sides:
<em>y</em> - 12<em>x</em> = (12<em>x</em> + <em>n</em>) - 12<em>x</em>
<em>y</em> - 12<em>x</em> = <em>n</em>
Answer:
<em>Answer:</em> 3) 
Step-by-step explanation:
<u>Radical Form and Exponent Form</u>
A radical can be expressed as a rational exponent following the identity:
![\displaystyle \sqrt[m]{x^n}=x^\frac{n}{m}](https://tex.z-dn.net/?f=%5Cdisplaystyle%20%5Csqrt%5Bm%5D%7Bx%5En%7D%3Dx%5E%5Cfrac%7Bn%7D%7Bm%7D)
We should also recall that:
We are given the expression:
Applying the power of power:
Simplifying:
Converting to radical form:
Answer: 3)
Marcia dissolved 1 kg of salt in 3 litres of water.
Bobby dissolves 2 pounds of salt in 7 pints of water
2.11 pints = 1 litre
7 pints = 7/2.11
= 3.32 litre
1 pound =0.45 kg
2 pound = o.45*2 kg
= 0.9 kg
So we find that Bobby is dissolving 0.9kg of salt in 3.32 litre of water
Marcia is dissolving 1 kg of salt in 3 litres of water.
Step-by-step explanation:
(3х - 7y = 13)×-2
6х + y = 7
-6х +14y = -26
6х + y = 7
15y=-19
y=-19÷15=-1.26
6x+-1.26=7
6x=7+1.26
6x=8.26
x=1.37
