Answer:
Jet ski is <u>29.688 db</u> Loud when a person is 48 feet away.
Step-by-step explanation:
Given:
∝
Distance of a person from Jet ski = 15 feet
Loudness of the sound = 95 decibels
We need to find the Loudness when the distance of person is 48 feet away.
Solution:
∝
so we get;
Where k ⇒ Constant.
first we will find value of k when
Substituting the values we get;
Now we need to find when
Hence Jet ski is <u>29.688 db</u> Loud when a person is 48 feet away.
I think that first you need to understand what CPCTC is used for.
Let's start with the definition of congruent triangles.
Definition of congruent triangles
Two triangles are congruent if each side of one triangle is congruent to a corresponding side of the other triangle and each angle of one triangle is congruent to a corresponding angle of the other triangle.
A definition works two ways.
1) If you are told the sides and angles of one triangle are congruent to the corresponding sides and angle of a second triangle, then you can conclude the triangles are congruent.
2) If you are told the triangles are congruent, then you can conclude 6 statements of congruence, 3 for sides and 3 for angles.
Now let's see what CPCTC is and how it works.
CPCTC stands for "corresponding parts of congruent triangles are congruent."
The way it works is this. You can prove triangles congruent by knowing fewer that 6 statements of congruence. You can use ASA, SAS, AAS, SSS, etc. Once you prove two triangles congruent, then by the definition of congruent triangles, there are 6 congruent statements. That is where CPCTC comes in. Once you prove the triangles congruent, then you can conclude two corresponding sides or two corresponding angles are congruent by CPCTC. These two corresponding parts were not involved in proving the triangles congruent.
Problem 1.
Statements Reasons
1. Seg. AD perp. seg. BC 1. Given
2. <ADB & <ADC are right angles 2. Def. of perp. lines
3. <ADB is congr. <ADC 3. All right angles are congruent
4. Seg. BD is congr. seg CD 4. Given
5. Seg. AD is congr. seg. AD 5. Congruence of segments is reflexive
6. Tr. ABD is congr. tr. ACD 6. SAS
7. Seg. AB is congr. seg. AC 7. CPCTC
Answer:
48
Step-by-step explanation:
One digit is given as 8, and the other digit is half of 8, or 4.
The number 48 has 8 as a factor; 84 does not.
The product is 48.
Answer:
c
Step-by-step explanation:
Answer:
2/5
Step-by-step explanation:
This is just an estamite i am sorry if it wrong