You want to break this down.
“5 less than” means you’ll subtract 5 from something.
That something is “3 times a number.” “3 times a number” means 3•x or 3x, since we’ll use x for that unknown number.
So, “5 less than 3 times a number” means “subtract 5 from 3x”: 3x-5
“Is” means “equals”. So 3x-5= something.
7, well, that’s 7.
So “5 less than 3 times a number is 7” means ”subtract 5 from 3x and set that equal to 7.”
3x-5=7
The whole circle (in terms of area) is 360 degrees.
Area of Sector = (angle / 360) * Area of the entire circle
Area of Sector = (45 / 360) * 80 in^2
Area of sector = (1/8) * 80 in^2
Area of sector = 10 in^2
Answer:
A = pi units^2
or A = 3.14 units^2
Step-by-step explanation:
This is 1/4th of a circle. Take the area of a circle and multiply by 1/4
A = 1/4 pi r^2
The radius is 2
A = 1/4 pi *2^2
A = 1/4 *pi * 4
A = pi
If we use the approximation that pi = 3.14
A = 3.14
Answer:
The first store, the one with 7 apples for 5.46 has a better deal.
Step-by-step explanation:
To be able to more easily compare the 2 prices, we need to find the price for <u>one</u> apple at each store. To do this, we can divide the price by the number of apples in each equation.
5.46/7=.78
3.95/5=.79
.78<.79 so the first store has a better deal.
Hope this helps!
Answer:
x=3, y=0
(3,0)
Step-by-step explanation:
-3x+ 5y = -9
4x+8y = 12
Divide the second equation by 4
x +2y = 3
Multiply this by 3
3x +6y = 9
Add this to the first equation
-3x+ 5y = -9
3x +6y = 9
----------------------
0x + 11 y = 0
Divide by 11
11y/11 = 0/11
y =0
Now find x
x +2y = 3
x +2(0) =3
x=3
