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ladessa [460]
3 years ago
8

What the answer to 30-32

Mathematics
1 answer:
kifflom [539]3 years ago
3 0

30. C & D

31. She initially had $30... The cost of each song was $1.20

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Match the reasons to the statements in the proof. Given: m 1 + m 5 = 180° m 1 + m 4 = 180° Prove: | |
Elden [556K]

Answer and Step-by-step explanation:

Since we have given that

1. m∠1 + m∠5 = 180° and m∠1 + m∠4=180° - Given

2. m∠1 + m∠5 = m∠1 + m∠4 - Substitution

3. m∠5 = m∠4 -

Subtraction property of equality

4. Ray YZ is parallel to Ray UV - If alternate interior angles equal, then line are ||

3 0
3 years ago
What is the solution to the equation? <br><br> √2x+10 -6=2
klio [65]
\sqrt{2x+10} -6=2&#10;
\sqrt{2x+10} =8    we switched side of -6 and added it to 2
2x + 10 = 64                 now we squared both sides to get rid of square root
2x = 54                         we switched side of +10 and subtracted it from 64
x = 27                           we divided both sides with 2

answer is x = 27
7 0
3 years ago
Read 2 more answers
Which polynomial represents the difference below? (7x^2+8)-(4x^2+x+6)
Alex787 [66]
I think the answer is :
3x^2 + 2 - x

i hope this helps :)
6 0
4 years ago
Use Euler's formula to derive the identity. (Note that if a, b, c, d are real numbers, a + bi = c + di means that a = c and b =
storchak [24]

Answer with Step-by-step explanation:

We have to prove that

sin 2\theta=2sin\theta cos\theta by using Euler's formula

Euler's formula :e^{i\theta}=cos\theta+isin\theta

e^{i(2\theta)}=(e^{i\theta})^2

By using Euler's identity, we get

cos2\theta+isin2\theta=(cos\theta+isin\theta)^2

cos2\theta+isin2\theta=(cos^2\theta-sin^2\theta+2isin\theta cos\theta)

(a+b)^2=a^2+b^2+2ab, i^2=-1

cos2\theta+isin2\theta=cos2\theta+i(2sin\theta cos\theta)

cos2\theta=cos^2\theta-sin^2\theta

Comparing imaginary part on both sides

Then, we get

sin2\theta=2sin\theta cos\theta

Hence, proved.

8 0
4 years ago
The sum of 48 and itself its half and half of the hal is added to 18​
hammer [34]

Answer:

150

Step-by-step explanation:

We are carrying out Addition

a) The sum of 48 and itself

= 48 + 48 = 96

b) Its half and half of the half

96 + (1/2 × 48) + (1/2 ×( 1/2 × 48)

= 96 + 24 +(1/2 × 24)

= 96 + 24 + 12

= 132

c) is added to 18

= 132 + 18

= 150

Therefore, the sum of 48 and itself, its half and half of the half is added to 18 is 150

8 0
3 years ago
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