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Mandarinka [93]
3 years ago
14

Help me!!!!!!!!!!!!!!!!

Mathematics
1 answer:
LuckyWell [14K]3 years ago
8 0

Answer:

4(3+x)

Step-by-step explanation:

12+4x = 4(3+x)

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how much does 1 pound cost?

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Could you help me with this question
mariarad [96]

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180 degree angles.

Step-by-step explanation:

180 degree angles are straight lines.

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4 years ago
BRAINLEST IF CORRECT!!!!which of the d-values satisfy the following inequality? d/5>4
irinina [24]

Answer:

d = 25

Step-by-step explanation:

\frac{d}{5} >4

The value of d has to satisfy the inequality

so replace d with one of the given options

\frac{25}{5} >4

We have to simplify the fraction first

\frac{25}{5} =5>4

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3 years ago
Solve the triangle.<br><br> B = 36°, a = 41, c = 20
svetoff [14.1K]

Answer:

See below

Step-by-step explanation:

When you have 2 sides and the angle between them you use the cosine theorem or law of cosines:

b^{2}=a^{2}+c^{2}-2acCos(B)

b^{2}=41^{2}+20^{2}-2(41)(20)cos36 \\b^{2}=1681 + 400-1327 \\b^{2}=754 \\b = 27.5

After you have a side and the opposed angle (side b and angle B), you use the law of sines:

\frac{a}{sinA} =\frac{b}{sinB}=\frac{c}{sinC}

I will calculate angle A first:

[tex]\frac{27.5}{sin36} =\frac{41}{sinA} \\sinA =\frac{41}{27.5} sin36 \\sin A = 0.876 \\A = 61.2\°[/tex]

Same for angle C:

\frac{27.5}{sin36} =\frac{20}{sinC} \\sinC =\frac{20}{27.5} sin36 \\sin C = 0.427 \\C = 25.3\°

The sum of the angles is 36° + 61.2° + 25.3° = 122.5°; The sum must be 180° so this isnt a triangle.

I re did the problem using B as 63° instead of 36° in case you wrote it wrong and I got a satisfactory answer.

using B = 36:

b = 36.6

angle A = 86.4°

angle C = 29.1°

A+B+C = 86.4° + 29.1° + 63° = 178.5° ~ 180°

5 0
3 years ago
20 points, which option is correcf
Novosadov [1.4K]

Answer:

B.

Step-by-step explanation:

Time series is a series of data points indexed (listed or graph) in a time order.

8 0
2 years ago
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