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2 years ago

30 POINTS!!!! + BRAINLESIT

Mathematics

2 answers:

Ronch [10]2 years ago

6 0

1. simplify: 4(6 + 7)

Answer: D: 52

2. Simplify: 6(5+4)

Answer: C: 54

3. Simplify:6y+5z+8y=3z

Answer: B: 14y+2z

4: Simplify: 6m + 7n + 5m =3n

Answer: C: 11m + 4+n

worty [1.4K]2 years ago

3 0

1: D; 4 * 13= 52

2: C; 6*9=54

3: B

4: C

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Answer:

Step-by-step explanation:

Population standard deviation = σ = 37 grams

Confidence interval = 94%

(1-α)×100% = 94

⇒α = 0.06

From table z table and interpolation

z = 1.881

L = Confidence interval length = 15

N = Number of samples

$L=2z_{\alpha/2}\frac{\sigma}{\sqrt N}\\\Rightarrow \sqrt N=2z_{\alpha/2}\frac{\sigma}{L}\\\Rightarrow \sqrt N=2\times 1.881\frac{37}{15}\\\Rightarrow \sqrt N=9.2796\\\Rightarrow N=86.11097616\approx 87$

∴ Number of turtles must she must weigh is 87

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2 years ago

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Johannes Gutenberg - Wikipediahttps://en.wikipedia.org › wiki › Johannes_Gutenberg

Johannes Gensfleisch zur Laden zum Gutenberg was a German goldsmith, inventor, printer, and publisher who introduced printing to Europe with his ...

Occupation: Engraver, ‎inventor‎, and printer‎

Born: Johannes Gensfleisch zur Laden zum G...

Died: February 3, 1468 (aged about 68); Mainz‎, ...‎

Known for: The invention of the movable-type ...

‎Early life · ‎Printing method with... · ‎Legacy · ‎References