1 year ago

Question 2 of 10

Mathematics

1 answer:

vfiekz [6]1 year ago

3 0

If I did my math right it should be D

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In a random sample of 75 individuals, 52 people said they prefer coffee to tea. 99.7% of the population mean is between what two

marshall27 [118]

Sample size, n = 75
Point estimate, p = 52/75 = 0.693
Z at 99.7% confidence interval ≈ 2.96

Population mean interval = p+/- Z*Sqrt [p(1-p)/n]

Substituting;
Population mean interval = 0.693 +/- 2.96*Sqrt [0.693(1-0.693)/75] = 0.693+/-0.158 = (0.535,0.851) or (53.5%,85.1%)

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3 years ago

A 50-year-old tree of a certain species may capture about 0.02 metric tons of carbon dioxide each year. In 2014, 1,562,000,000 m

Archy [21]

Ha eid ajek owvegv broyhw ksyw gvis. Eso se

5 0

2 years ago

Hello if you could help me that would be great

tankabanditka [31]

2.74x=58.19

x=21.2372

He only has enough lunch money for 21 full days.

3 0

3 years ago

If the maximum value of y=-3x² + mx + 10 is 37, find the values of m.

uysha [10]

Step-by-step explanation:

y = -3x² + mx + 10

dy/dx = -6x + m.

When dy/dx = 0, -6x + m = 0. => x = m/6.

We have y = -3(m/6)² + m(m/6) + 10 = 37.

=> -m²/12 + m²/6 = 27

=> -m² + 2m² = 324

=> m² = 324

=> m = 18 or m = -18.

5 0

2 years ago

Read 2 more answers

Can you help me with 12-3(x+1)=30

inysia [295]

Greetings!

$12-3(x+1)=30$
Distribute the Parenthesis.
$12-3x-3=30$
Combine like terms.
$9-3x=30$
Add -9 to both sides.
$(15-3x)+(-9)=(30)+(-9)$
$-3x=21$
Divide both sides by -3.
$(-3x)/-3=(21)/-3$
The Answer Is:
$x=-7$

Hope this helps.
-Benjamin

7 0

3 years ago