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Alborosie
4 years ago
9

I need help with this question

Mathematics
1 answer:
Viktor [21]4 years ago
8 0
The perimeter is 20 units.
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Find the measurement of the angle
Shalnov [3]

Answer:

∠ 1 = 120°

Step-by-step explanation:

Note that ∠ Q and ∠ R are congruent, that is both 30°, thus

∠ 1 = 180° - (30 + 30)° = 180° - 60° = 120°

6 0
4 years ago
What is the answer to. Work out 5-10/-5
CaHeK987 [17]
10/-5 = -2 so 5 - (-2)= 7
8 0
4 years ago
The area of a rectangular field is 1000 yd2.Two parallel sides are fenced with aluminum at $15/yd. One of the remaining sides is
ioda
Coolio

lw=1000
lets assume that the aluminum sides are the legnth
2 sides
2*15=30
30l=cost of aluminum

steel=10w
wood=(w-10)5=5w-50
we can eliminate the w by solving for w in first relation

lw=1000
divide both sides by l
w=1000/l
sub that for w

10(1000/l)=steel
5(1000/l)-50=wood

wood cost+steel+aluminum cost=total cost
10(1000/l)+5(1000/l)-50+30l=1525
(10000/l)+(5000/l)-50+30l=1525
(15000/l)-50+30l=1525
add 50 to both sides
(15000/l)+30l=1575
times both sides by l
15000+30l²=1575l
minus 1575l from both sides
30l²-1575l+15000=0
factor
(15)(l-40)(2l-25)=0
set each equal to 0
l-40=0
l=40

2l-25=0
2l=25
l=12.5



the there are 2 possible combinations

aluminum=40yd and steel=25yd or
aluminum=12.5yd and steel=80ft
both yield 1000yd² and cost $1525
5 0
4 years ago
I need to know the answers of 10, 12, and 14
k0ka [10]

Answer:

10: 2

12: 0

14: 24

4 0
3 years ago
Kendra bought 163 donuts for $60. Her profit was $55 once she had sold 100 donuts. Which equation below
rosijanka [135]

Answer:

Concept: Mathematical Modeling

  1. 163 donuts for 60
  2. She mad 55 in profit: 55/163= .33 per donut
  3. P(n)= 163(n)
  4. Note: You didn't provide the options
6 0
3 years ago
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