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zvonat [6]
3 years ago
15

6. Are these triangles similar? If they are, name the postulate or theorem that proves they are.

Mathematics
1 answer:
TiliK225 [7]3 years ago
3 0
C by AA- bc 180 degrees in a triangle
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CAN SOMEONE HELP WITH THIS ASAP!!!
jek_recluse [69]

Answer: x=8

Step-by-step explanation:

Since we are given that ∠ABC and ∠DBC are complementary angles, we know that adding them together should give us 90°. We can use this to solve for x.

6x+13+4x-3=90         [combine like terms]

10x+10=90                 [subtract both sides by 10]

10x=80                       [divide both sides by 10]

x=8

Now, we know that x=8.

6 0
3 years ago
Which of the following expressions are equivalent (equal) to 3(2x - 7)
velikii [3]

Answer:

6x - 21

Step-by-step explanation:

3(2x - 7)

Use the Distribute Property of Multiplication by multiplying the number outside the parenthesis with the numbers inside.

3 × 2x = 6x

3 × -7 = -21

Combine:

6x - 21

Hope this helped.

3 0
3 years ago
Read 2 more answers
1. The C major key, starting with the middle C, consists of seven notes (white keys on the piano) with the following frequencies
Lorico [155]
1.) <span>the ratio of the note A to middle C = 440.0 / 261.6 = 1.6820 ≈ 1.6818

2.) </span><span>the ratio of the note D to middle C = 293.7 / 261.6 = 1.1227

3.) </span><span>D# = 293.6 x 1.0595 = 311.1

4.) </span><span>the ratio of the frequency of G to C is 1 : 262/392 = 1 : 0.6683 ≈ 3 : 2

5.) </span><span>the ratio of the frequency of E to C = 1 : 262/330 = 1 : 0.7939 ≈ 5 : 4

6.) The </span><span>component in a musical note is referred to as the pitch of a sound is the frequency.</span>
8 0
2 years ago
Read 2 more answers
Two cylinders are similar. The radius of cylinder a is 5.6 in. The radius of cylinder b is 1.4 in. If the hwight of cylinder b i
sleet_krkn [62]
The answer is 16in.

Let the radius and height of cylinder A be Ra and Hb respectively and the radius and height of cylinder B be Rb and Hb respectively.

Using similar shapes:
Ra/Ha= Rb/Hb
5.6/Ha=1.4/4
Ha=(4×5.6)/1.4
Ha=22.4/1.4
Ha=16in
6 0
3 years ago
Evaluate a-b for a=5 and b=(-8)
Rudik [331]

Answer:

13

Step-by-step explanation:

a = 5

b = -8

5 - -8 = 13

3 0
3 years ago
Read 2 more answers
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