3 years ago

5) Radical equations

Mathematics

1 answer:

Ludmilka [50]3 years ago

5 0

3r + 36 = -9 - 2r
5r = -45
r = -9

I double checked it works.

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Solve the equation using inverse operations. 18 = 2/5 y Enter your answer in the box. y =

Eva8 [605]

y = 45

multiply both sides by 5 to eliminate the fraction

90 = 2y ( divide both sides by 2 )

45 = y

7 0

3 years ago

Stells [14]

Apothem- 6.928
Area (rounded)- 166.3

6 0

3 years ago

4x² – 3x²<br> Please help <br> i promise ill study next time

irakobra [83]

Answer:

1 $x^{2}$

Hope that helps!

Step-by-step explanation:

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3 years ago

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Find the measure of AngleJ, the smallest angle in a triangle with sides measuring 11, 13, and 19. Round to the nearest whole deg

Evgen [1.6K]

Answer:

34°

Step-by-step explanation:

The law of cosines is good for finding angles when only sides are known. We'll use the conventional sides a, b, c, and angles A, B, C. Yes, we know the problem statement calls the smallest angle "J". We trust you can make the translation.

a² = b² +c² -2bc·cos(A) . . . . . for sides a, b, c and angle A

Solving for the angle, we get ...

A = arccos((b² +c² -a²)/(2bc))

Filling in the numbers with "a" being the shortest side, we have ...

A = arccos((13² +19² -11²)/(2·13·19)) = arccos(409/494)

A ≈ 34.113°

The smallest angle, ∠J, is about 34°.

8 0

4 years ago

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yolanda makes 3 sweaters a day. she sews 6 buttons onto each sweaters she makes. how many buttons will she sew in 3 day

KengaRu [80]

Yolanda will sew 54 buttons in 3 days.

If she sews 3 sweaters a day then, by the end of each day she will have 18. After three days she will have 54.

hope this helps and have an awesome day !

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3 years ago