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Ede4ka [16]
3 years ago
5

Austin takes 4 hours to make 2 backpacks and a handbag. The time he takes to

Mathematics
1 answer:
lys-0071 [83]3 years ago
7 0

Step-by-step explanation

b = 2h      is given

2 b   + h  = 4 hours     is  given      sub in the top equation

2 (2h) + h = 4

5h = 4

h = 4/5 hr    or  48 minutes

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Isabella spends $4.87 on paintbrushes the paintbrushes and paint how many of each item does she buy explain how you found your a
AveGali [126]
You need to use a system of equations with 2 variables
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Leno4ka [110]

Answer:

a) m∠BPD = 120°

b) m∠BC + m∠AD = 120°

Step-by-step explanation:

a) To solve for question a, we make use of a theorem called the intersecting chord theorem. This states that:

The measure of the angle formed by two chords that intersect inside a circle is the average of the measures of the intercepted arcs.

The Interior angle =( The larger exterior arc + The smaller exterior arcs) ÷ 2

The larger exterior arc (m∠BD) = 170°

The small exterior arc (m∠CA) = 70°

m∠BPD = m∠BD + m∠CA/2

m∠BPD = 170° + 70°/2

= 240°/2

= 120°

b) We are to find m∠BC + m∠AD

The sum of exterior angles in a circle = 360°

360° = m∠BD + m∠CA + m∠BC + m∠AD

360° = 170° + 70° + m∠BC + m∠AD

360° = 240 + m∠BC + m∠AD

360 - 240° = m∠BC + m∠AD

Thererefore,

m∠BC + m∠AD = 120°

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It doesn’t. if there were 30 7th graders and 30% owned a bracelet that would mean 9 own a bracelet.
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