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tatiyna
3 years ago
5

Tell whether each statement is always (A), sometimes (S), or never (N) true.

Mathematics
1 answer:
AnnZ [28]3 years ago
7 0
N an acute angle is 90 degrees or less and 90 + 90 is 180 and an obtuse angle is always more than 90 and always less than 180
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Tony is mailing packages. Each small package costs him $2.80 to send. Each large package costs him $3.60. How much will it cost
Natasha_Volkova [10]

Answer:

The answer is $33.6

Step-by-step explanation:

Each small package costs him $2.80

3 small packages will cost him 3 x $2.80 = $8.4

 

Each large package costs him $3.60

7 large packages will cost 7 x $3.60 = $25.2

 

Cost to  send 3 small packages and 7 large packages = $8.4 + $25.2

= $33.6

6 0
2 years ago
Find an exact value. Cos 75° negative square root of six plus square root of two quantity square root of six minus square root o
ehidna [41]

Answer:

√2(√3 - 1)/4

Step-by-step explanation:

To find an exact value for Cos75°, we use the compound angle formula. Since 75° = 45° + 30°, Cos75° = Cos(45° + 30°).

Using Cos(A + B) = CosACosB - SinASinB where A = 45° and B = 30°,  

Cos75° = Cos(45° + 30°) = Cos45°Cos30° - Sin45°Sin30°

Now Cos45° = Sin45° = 1/√2 = √2/2, Cos30° = √3/2 and Sin30° = 1/2.

Substituting these values into the above equation, we have

Cos75° = Cos(45° + 30°)

= Cos45°Cos30° - Sin45°Sin30°

= √2/2 × √3/2 -  √2/2 × 1/2

= √6/4 -√2/4

= √2(√3 - 1)/4

6 0
3 years ago
What is the probability that a client chooses Greece, or Italy, or both countries, on a tour?
Jlenok [28]

Answer:

Both

Step-by-step explanation:

5 0
3 years ago
Ab - bc+ ac, bc - ca+ ab, ca - ab-2bc
BabaBlast [244]

Answer:

ab-2bc+ca

Step-by-step explanation:

Complete question is given below

Add:-

ab-bc+ac,bc-ca+ab,ca-ab-2bc

We have to find the result after addition

Now, adding all expression

We get

ab-bc+ac+bc-ca+ab+ca-ab-2bc

Combine like terms then, we get

(ab+ab-ab)+(bc-bc-2bc)+(ac-ca+ca)

ab-2bc+ca

Hence,ab-bc+ac+bc-ca+ab+ca-ab-2bc=ab-2bc+ca

3 0
3 years ago
Find the area of the shaded region.
andriy [413]
8x5 = 40
3x2 = 6

40 - 6 = 34

answer:
area of shaded = 34
3 0
3 years ago
Read 2 more answers
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