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AfilCa [17]
3 years ago
9

Use the expression 5a – 2b – 3 + 2b – 6a.

Mathematics
1 answer:
ella [17]3 years ago
4 0

Answer:

5a + (-6a) + (-2b) + 2b + (-3) = -a -3 or -(a + 3) so first answer is correct because -(a + 3) is the same as -(3 + a)

Step-by-step explanation:

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A boat costs $19,200 and decreases in value by 12% per year. How much will the boat be worth after 5 years?
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One-eighth a number is two more than one-fourth the number. What is the number? A. −16 B. −4 C. 8 D. 16
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Answer:

\mathrm{A}

Step-by-step explanation:

Let that number be x.

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State weather the following can be expressed as a ratio 12g and 45kg
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Answer:

The anwser is always Jesus

Step-by-step explanation:

Also there is no following

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3 years ago
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Barry is selling magazine subscriptions for a school fundraiser. He has already sold 15 subscriptions. He plans to sell 3 subscr
olya-2409 [2.1K]

Answer:

5 more weeks

Step-by-step explanation:

5 more weeks if he already sold 15. 10 more weeks if you exclude the 15 he already sold.

3 0
4 years ago
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1)
MrRissso [65]

Answer:

Step-by-step explanation:

The diagram of the triangles are shown in the attached photo.

1) Looking at ∆AOL, to determine AL, we would apply the sine rule

a/SinA = b/SinB = c/SinC

21/Sin25 = AL/Sin 105

21Sin105 = ALSin25

21 × 0.9659 = 0.4226AL

AL = 20.2839/0.4226

AL = 50

Looking at ∆KAL,

AL/Sin55 = KL/Sin100

50/0.8192 = KL/0.9848

50 × 0.9848 = KL × 0.8192

KL = 49.24/0.8192

KL = 60

AK/Sin25 = AL/Sin 55

AKSin55 = ALSin25

AK × 0.8192 = 0.4226 × 50

AK = 21.13/0.8192

AK = 25.8

2) looking at ∆AOC,

Sin 18 = AD/AC = 18/AC

AC = 18/Sin18 = 18/0.3090

AC = 58.25

Sin 85 = AD/AB = 18/AB

AB = 18/Sin85 = 18/0.9962

AB = 18.1

To determine BC, we would apply Sine rule.

BC/Sin77 = 58.25/Sin85

BCSin85 = 58.25Sin77

BC = 58.25Sin77/Sin85

BC = 58.25 × 0.9744/0.9962

BC = 56.98

7 0
4 years ago
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