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Anna11 [10]
3 years ago
11

Forget how to do this please someone help

Mathematics
1 answer:
tangare [24]3 years ago
6 0

Answer:

9.830

Step-by-step explanation:

I'm not sure if it's right but hope this helps you

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Find the area of the triangle to the nearest tenth . Pleaseeee help
tigry1 [53]

Answer:

15.8 cm²

Step-by-step explanation:

Please see attached photo for diagram.

We'll begin by calculating the angle A. This can be obtained as follow:

B = 56°

C = 78°

A =?

A + B + C = 180 (Sum of the angle in triangle)

A + 56 + 78 = 180

A + 134 = 180

Collect like terms

A = 180 – 134

A = 46°

Next, we shall determine the value of b by using the sine rule. This can be obtained:

Side opposite angle C (c) = 7.2 cm

Angle C = 78°

Angle B = 56°

Side opposite angle B (b) =?

b/Sine B = c/sine C

b/Sine 56 = 7.2/Sine 78

Cross multiply

b × Sine 78 = 7.2 × Sine 56

Divide both side by Sine 78

b = 7.2 × Sine 56 / Sine 78

b = 6.1 cm

Finally, we shall determine the area of the triangle. This can be obtained as follow:

Side opposite angle C (c) = 7.2 cm

Side opposite angle B (b) = 6.1 cm

Angle A = 46°

Area (A) =?

A = ½bcSineA

A = ½ × 6.1 × 7.2 × Sine 46

A = 15.8 cm²

Therefore, the area of the triangle is 15.8 cm²

4 0
3 years ago
Samantha is wrapping a present for her friend's birthday. The length of the box is 12 inches, width is 7 inches, and the height
loris [4]

Answer:

358 inches^2

Step-by-step explanation:

SA = 2(lw + lh + wh)

SA = 2 (12*7 + 12*5 + 7*5)

SA = 358

Hope this is helpful !!!!!

4 0
3 years ago
Simon is buying a sofa for $995. If he makes a down payment of 15% of the selling price, the furniture store will allow him to p
SVEN [57.7K]

Answer: 15% of 995 is 149.25, rounded up he should be paying 149 monthly

6 0
3 years ago
Y + y + y + y + ytytyty<br> Collect like terms
Ostrovityanka [42]
This would be 4y + 1ytytyty I believe considering they’re all bunched together in the last bit.
7 0
3 years ago
What is the answer to y=3.648·1.182×
Goryan [66]

Answer:

if you are solving for X then X=0

Step-by-step explanation:

7 0
3 years ago
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