Answer:
-3 is the answer.
Step-by-step explanation:
=2(-1+3)-7
=2(2)-7
=4-7
=-3
Hope it will help you :)
3x - 5y = 18 over
-10x + 5y = 10
Add them because the 5y's have the right symbols for us to add
-7x = 28
Divide
x = -4
Now you can plug in -4 for x in one equation, I would use the first equation!
3(-4) - 5y = 18
-12 - 5y = 18
Add 12
-5y = 30
Divide
y = -6
Your solutions are going to be:
x = -4
y = -6
To check your work plug x and y into one equation:
3(-4) - 5(-6) = 18
-12 + 30 = 18
18 = 18
Since 18 does equal 18 you know that your solution's work!
Answer:

Step-by-step explanation:
(a)Base Area
Side length of square base=s
Area of a Square of side length s=
(b)
- Height =6 ft
- Volume=

Volume of a Pyramid
Substituting the given values, we have:

(c)Solving the equation derived from (b)

Solving this equation shows that s =9 ft.
The linear equation is probably a horizontal line with a y-intercept of 8.
Answer:
The answer is 48 ft
Step-by-step explanation:
Step 1:
The garden before the fence is: <u>(refer to graphical representation in attached file)</u>
o = side
b = base
h= hypotenuse
Use Sin (t) formula;
Sin (t) = o/h
Sin (t) = 80/100
Sin (t) = 0.8
Step 2:
The garden was divided in 2 parts and a is the missing length which needed to be found <u>(refer to graphical representation in attached file)</u>
For Small triangle <u>(refer to graphical representation in attached file)</u>;
a = side
c = base
b= hypotenuse
Use Sin (t) formula;
Sin (t) = a/b
0.8 = a/60
A = 0.8x60
A = 48 ft