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3 years ago

7

Only solve number 21

1 answer:

pantera1 [17]3 years ago

4 0

5-7+15-(-1) -2+15+1 -2+15 =13 13+1 Answer is 14

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Maria bought seven boxes. A week later

Nady [450]

44 boxes. 22 / 1/2 = 44

3 0

4 years ago

(50 POINTS) What is the length of YZ in Triangle XYZ? Explain two different methods that could be used to find this length.

LenKa [72]

<h3>First Method:</h3>

<u>Using cosine rule</u>:

$\rightarrow \sf cos(30 ) = \dfrac{YZ}{12}$

$\rightarrow \sf YZ = 12cos(30 )$

$\rightarrow \sf YZ = 6\sqrt{3}$

$\rightarrow \sf YZ = 10.4$

<h3>Second Method:</h3>

<u>First find XY using sine rule</u>:

$\rightarrow \sf sin(30)=\dfrac{XY}{12}$

$\rightarrow \sf XY = 12sin(30)$

$\rightarrow \sf XY =6$

Then use Pythagoras Theorem:

⇒ XY² + YZ² = XZ²

⇒ (6)² + YZ² = 12²

⇒ YZ² = 144 - 36

⇒ YZ = √108

⇒ YZ = 6√3

⇒ YZ = 10.4

4 0

2 years ago

Estimate the difference 422-284

irga5000 [103]

The answer is 138 if u plain out subtract it

5 0

3 years ago

Read 2 more answers

1 2 3 4 5 6 7 8 9 10

Doss [256]

Answer:

12!!!!!!!!!!!!!!!!!!!!!!!

4 0

3 years ago

$9 rebate on a $38 chair=

agasfer [191]

Step-by-step explanation:

Since, there is $9 rebate on a $38 chair

Therefore cost price of on chair = 38 - 9 = $29

6 0

4 years ago

Read 2 more answers