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Lisa [10]
3 years ago
7

What is 10+10 and what is 4+5

Mathematics
2 answers:
seropon [69]3 years ago
6 0
20 and 9 is the answer
Sonbull [250]3 years ago
3 0
10 + 10 = 20 
4 + 5 = 9 

:P
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4) Solve ∆ABC, a = 2.5 cm, c = 3.6 cm, and ∠A = 43°. Begin by sketching and labelling
mezya [45]

The length of b and angle B and C are 3cm, 45  degrees and 79 degrees respectively.

<h3>How to determine the parameters</h3>

To determine the angles and length of sides, we use the sine rule

The sine rule is thus:

\frac{sin A}{a} = \frac{sin B}{b} = \frac{sin C}{c}

Given;

  • a = 2. 5cm
  • c = 3. 6cm
  • ∠A = 43°

Let's find angle C

\frac{sin 43}{2. 5} = \frac{sin C}{3. 6}

cross multiply

0. 682 × 3. 6 = sin C × 2. 5

sin C = 2. 4552/ 2. 5

C = sin^-^1(0. 982)

C = 79°

To find length of b

b= \sqrt{c^2 - a^2}

substitute the values

b = \sqrt{3.6^2 - 2. 5^2}

b = \sqrt{6. 71}

b = 2. 59 cm

b = 3cm

To find angle B, we have

\frac{sin 43}{2. 5} = \frac{sin B}{2. 59}

cross multiply

0. 682 × 2. 59= sin B × 2. 5

sin B = 0. 7065

B = sin^-^1(0. 7065)

B = 45°

Hence, the length of b and angle B and C are 3cm, 45  degrees and 79 degrees respectively.

Learn more about sine rule here:

brainly.com/question/12827625

#SPJ1

8 0
1 year ago
If the man has 20 dollars in his bank account and spends 2 dollars a day on coffee. How much money will he have in his account a
musickatia [10]
HEs going to have 14 dollars left
2x3=6
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Buzz and Jessie are missing each other and their friend Woody. They want to meet at Woody's house which is halfway between their
sammy [17]

Answer:10x + 26

Step-by-step explanation:

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Can someone help me with this question please
krek1111 [17]
Any other time I would answer this sorry


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3 years ago
Valor de x de (5x-20) 85
aleksandrvk [35]
Answer/valor de x is x=21
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