Answer:
5 20/50
Step-by-step explanation:
Answer:
x=23
y=12
Step-by-step explanation:
Start by making two separate equations. One for each answer it gives you. So you know you will have two different numbers, therefore you need two different variables. I'm going to use x and y. The first part of the sentence says that the sum is 35 meaning we are going to add two numbers to get 35.
x+y=35
The second part says the difference of two numbers is 11, which means you are subtracting two numbers to get 11.
x-y=11
Now you can either decide to you substitution or elimination. I prefer elimination, so thats what I will be using. To do this you need to line up both equations.
x+y=35
x-y=11 Now you can add straight down. x+x=2x; y-y=0; 35+11=46. Write out what you have left
2x+0=46 You do not have to write the zero in the equation, I did so that you could see that the y's cancell each other.
It can also look like this 2x=46. Now you need to divide by 2 to get x by itself.
x=23
To find y you take the 23 and plug it for x in one of the equations you started with. I'm going to use the (x+y=35). No matter whihc you use your answer will be the same.
23+y=35 Subtract the 23 over to get y alone.
-23 -23
y=12
Answer:
15
Step-by-step explanation:
3 feet long
5 feet wide
5 × 3 ft = 15
Amanda would have 15 feet of flowers
Answer:
<em>x2 + 8x – 65 = 0</em>
Step-by-step explanation:
Complete question
<em>A square picture with a side length of 4 inches needs to be enlarged. The final area needs to be 81 square inches. Which equation can be used to solve for x, the increase in side length of the square in inches? x2 + 4x – 81 = 0 x2 + 4x – 65 = 0 x2 + 8x – 65 = 0 x2 + 8x – 81 = 0</em>
Given the initial side length = 4in
Initial area = L²
L is side length of the square
Initial area = 4²
Initial area = 16 square inches
Area of the enlarged square = 81 square inches
To get the constant term of the expression, we will find the difference in the areas
Difference = 85 - 16
Difference = 65 square units
The coefficient of x will be the 2 *initial area of the square
Given the standard form of an expression as
ax^2 + bx + c
a = 1, b = 2*4 = 8, c = -65
Substitute
x^2 + 8x - 65
This gives the required expression
Answer:
I think it’s 15. Tell me if it’s wrong
Step-by-step explanation:
