Answer:
8.86 cm²
Step-by-step explanation:
Rectangle - Circle
(3 × 4) - (3.14 × 1²)
12 - 3.14
8.86
Answer: y=2x-23, x=8; (8, -7)
Step-by-step explanation:
First, arrange both equations in y=mx+b form and evaluate; y=2x-23 & x=8
Now, use x=8 to substitute the value into the y=2x-23 equation;
y=2(8)-23, this will give you a completed ordered pair;
(x=8, y=-7)
Hope this helps !
x+y=8+(-7)
=1
Answer:
Carros = 20
Motos = 30
Step-by-step explanation:
Carros = x
Motos = y
x + y = 50
4x + 2y = 140
x = 50 - y
4 (50-y) + 2y = 140 (substitución)
200 - 4y + 2y = 140
- 2y = 140 - 200
y = -60/-2
y = 30
x + 30 = 50
x = 50-30
x = 20
Recall the following identities:
from which we get
Since
is in the fourth quadrant
we know that
should be positive, so when we take the square root here, we should take the positive root.
Now recall that
and since
is in the fourth quadrant, we expect
to be negative. So,
One final identity:
from which we get
Answer:
D. 1/3^3
Step-by-step explanation:
Divide 3/3 as usual and get 1.
When dividing exponents, you are actually subtracting them. 5-8 = -3.
D is the answer because positive exponents in the denominator of the fraction is the same as a negative exponent in the numerator.