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VLD [36.1K]
3 years ago
7

mrs.jones is thinking of a number thst when rounded to nearest hundred is 400 what is the number explain

Mathematics
1 answer:
kherson [118]3 years ago
6 0
The number could be several different ones. Are you sure that's exactly what the problem says? If not, I'm going to ask you write the entire problem. If not, then whoever made it did not give enough information for there to be an absolute answer. I'm sorry I couldn't help you, but I really hope I can with more information.
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Please help find them <br>1 AB<br><br>2 BC​
spin [16.1K]

Answer:

AB ≈ 15.7 cm, BC ≈ 18.7 cm

Step-by-step explanation:

(1)

Using the Cosine rule in Δ ABD

AB² = 12.4² + 16.5² - (2 × 12.4 × 16.5 × cos64° )

       = 153.76 + 272.25 - (409.2 cos64° )

       = 426.01 - 179.38

       = 246.63 ( take the square root of both sides )

AB = \sqrt{246.63} ≈ 15.7 cm ( to 1 dec. place )

(2)

Calculate ∠ BCD in Δ BCD

∠ BCD = 180° - (53 +  95)° ← angle sum in triangle

∠ BCD = 180° - 148° = 32°

Using the Sine rule in Δ BCD

\frac{BC}{sin53} = \frac{BD}{sin32} = \frac{12.4}{sin32} ( cross- multiply )

BC × sin32° = 12.4 × sin53° ( divide both sides by sin32° )

BC = \frac{12.4sin53}{sin32} ≈ 18.7 cm ( to 1 dec. place )

         

6 0
2 years ago
bill has earned 45,000 for the last two years. prior to that, bill earned 42,000 40,000 38,000 what's bills average income in th
Eddi Din [679]
(45000+45000+42000+40000+38000)/5=42000

4 0
3 years ago
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han exit showed that 7 out of every 8 voters cast a ballotin favor of an amendment to a city charter. at this rate, how many peo
stepladder [879]

298000  \div 8 = 37250 \\ 37250 \times 7 = 260750
260,750 voters cast a ballot in favor.
4 0
3 years ago
What property describes the number sentence 6+0=6
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Additive identity because that is the property when you add something to 0 and get the same thing
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The answer is 169 I’m pretty sure
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