He only used 1/5 of the jar so (1/5*1/4) because he used a fourth of the fifth of the jar the answer is 1/20<span />
Answer:
-a + 15
General Formulas and Concepts:
<u>Pre-Algebra</u>
<u>Algebra I</u>
Step-by-step explanation:
<u>Step 1: Define</u>
3(a + 5) - 2(a + a)
<u>Step 2: Simplify</u>
- Combine like terms: 3(a + 5) - 2(2a)
- Distribute 3: 3a + 15 - 2(2a)
- Multiply: 3a + 15 - 4a
- Combine like terms: -a + 15
Answer: 130
In order to solve for <4, you need to know that supplementary angles add up to 180°.
<3 = 50
180 - 50
130
**For future questions**
1. The sum of the interior angles of a triangle is 180°
2. Alternate interior angles are congruent
3. The exterior angle of a triangle is the sum of the nonadjacent interior angles
See attachment below.
If 2x+y=5, then y=5-2x, so he substituted 5-2x correctly.
x+4x=5x, so he combined like terms correctly.
If 5x-10=10, then 5x=10+10 -> 5x=20, so he subtracted 10 from the right side instead of adding 10 to the right side.
The answer is C.
Here's the correct solution:
Answer:
Not only in mathematics, scientific proof also are required in the other field of science. Also maths proofs are of particular structure, containing steps and logics. So proving is like doing science, it is science. That's why it is important to prove.
Step-by-step explanation: