Answer:
a. 0.69x + 0.14
b. 5.67 - 30.48a
c. 1.1x - 3.01y
Step-by-step explanation:
a) 2.56x + 0.14 − 1.87x
<em>To simplify this algebraic expression, you start by collecting like terms;</em>
2.56x − 1.87x + 0.14
<em>Then perform arithmetic operation</em>
0.69x + 0.14
b) 7.32a + 2.1 (2.7 − 18a)
<em>Here; first, the bracket must be opened</em>
<em>To open the bracket; each expression in the bracket is multiplied by 2.1. This leaves us with</em>
7.32a + 2.1 * 2.7 − 2.1 * 18a
7.32a + 5.67 - 37.8a
<em>Then, you collect like terms</em>
7.32a - 37.8a + 5.67
<em>Then perform arithmetic operation</em>
-30.48a + 5.67
<em>Rearrange</em>
5.67 - 30.48a
c) 0.12x + 0.34y + 0.98x − 3.35y
<em>Here, you start by collecting like terms</em>
0.12x + 0.98x + 0.34y − 3.35y
<em>Then perform arithmetic operation</em>
1.1x - 3.01y
Answer:
The length of XY is 17
Step-by-step explanation:
Given that X is midpoint of line WY
WX=3x-1
WY=10x-26
To find XY:
Given WY is straight line and X is midpoint of line WY
We can write as
WX+XY=WY
(3x-1)+XY=(10x-26)
XY=7x-25
Also, WX=XY
(3x-1)=(7x-25)
-1+25=7x-3x
4x=24
x=6
The length of XY is 7x-25=7(6)-25=42-25=17
Are you sure your in elementary school???????????
Answer:
2x<15
Step-by-step explanation:
>= greater than
<=less than
To solve:
2x<15
÷ 2 ÷2
x< 7.5 or 7 1/2