Answer:
108°
Step-by-step explanation:
The area of a sector is given by the formula ...
A = (1/2)r²θ . . . . . where θ is in radians
Solving for θ, we find ...
θ = 2A/r²
For your given sector, the central angle is ...
θ = 2(30π cm²)/(10 cm)² = 0.6π . . . . radians
π radians is 180°, so the central angle in degrees is ...
θ = (0.6)(180°) = 108°
The central angle measure of the sector is 108°.
2. Pedro mixes 3/4 teaspoon of plant food for every gallon of water, and we need to find out how much he needs for 5 gallons.
First, make 5 gallons into a fraction. The easiest fraction to make would be 5/1, so we'll use that.
Now, we multiply the fractions to find out how much he needs. In order to do that, we multiply the numerators (top numbers) together, and we multiply the denominators (bottom numbers) together.

3 x 5 = 15
4 x 1 = 4
He needs 15/4 teaspoons of water. We can simplify this by seeing how many times 4 goes into 15.
4 x 3 = 12
4 x 4 =16
16 is bigger than 15, so we can't use that.
12 is 3 less than 15, so we can write the fraction as
3 3/15
Pedro needs 15/4, or 3 3/15 teaspoons for 5 gallons of water. (D)
4. Which of the following expressions is NOT equal to 7/10?
A) 5/10 + 1/10 + 1/10
B) 2/10 + 2/10 + 3/10
C) 3/10 + 3/10 + 2/10
D) 4/10 + 2/10 + 1/10
To find the answer, we simply have to add the fractions together. Any fractions with the same denominator (bottom number) can be added by putting all the numerators (top numbers) together over the denominator.
A) 5/10 + 1/10 + 1/10
5 + 1 + 1 = 7
7/10
B) 2/10 + 2/10 + 3/10
2 + 2 + 3 = 7
7/10
C) 3/10 + 3/10 + 2/10
3 + 3 + 2 = 8
8/10
D) 4/10 + 2/10 + 1/10
4 + 2 + 1 = 7
7/10
C came out to 8/10 which is bigger than 7/10. This means that C is not equal to 7/10.
The answer is C) 3/10 + 3/10 + 2/10
Answer:
well basically no so i say no
Step-by-step explanation:
you can but you wouldn't get a answer because you would only get the same answer so..
Answer:

Step-by-step explanation:
If we simplify that fraction, we get

Keep that in mind.
If y, a ,b are zeroes of the cubic polynomial, then that means

make up the polynomial.
Notice that leading xoeffeicent will be 1, so the roots will multiply to

so

which gives us

Proof:
Consider the function

The roots are 2, 3, 5.
D is -30 so we get
Using the value,

If we use the orginal equation, we get
