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melomori [17]
2 years ago
9

I don’t understand this someone pls help

Mathematics
1 answer:
omeli [17]2 years ago
7 0

To solve this, you need to plug in the numbers for <em>h</em>.

-4(-12) ≥ 8       48 ≥ 8  yes

-4(-7) ≥ 8         28 ≥ 8  yes

-4(-5) ≥ 8        20 ≥ 8  yes

-4(-3) ≥ 8        12 ≥ 8  yes

-4(-2) ≥ 8         8 ≥ 8  yes

-4(-1) ≥ 8         4 ≥ 8  no

-4(1) ≥ 8          -4 ≥ 8  no

-4(3) ≥ 8         -12 ≥ 8 no

-4(8) ≥ 8         -32 ≥ 8  no

Hope this helped!

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20 POINTS , ALSO GIVING BRAINLIEST , PLEASE HURRY !!
liq [111]

Answer:

.5236

Step-by-step explanation:

Formula for sphere volume:

V = \frac{4}{3} \pi r^{3}

substiture 0.5 for r:

\frac{4}{3} \pi 0.5^{3} = .5236

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3 years ago
Katlyn made 4 dresses with 7 yards of fabric. How many yards did she us on 1 dress?
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8 0
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a 14 ounce energy drink contains 10 1/2 teaspoons of sugar. How much sugar is in one ounce of the drink?
Y_Kistochka [10]
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3 years ago
Theo bought two hot dogs and two sodas for $4.00. At the same concession stand, Vicky bought three hot dogs and a soda for $4.50
miss Akunina [59]
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8 0
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Read 2 more answers
a random sample of 510 high school students has a normal distribution. The sample mean average ACT exam score was 21 with a 3.2
34kurt

Answer:

CI = 21 ± 0.365

Step-by-step explanation:

The confidence interval is:

CI = x ± SE * CV

where x is the sample mean, SE is the standard error, and CV is the critical value (either t score or z score).

Here, x = 21.

The standard error for a sample mean is:

SE = σ / √n

SE = 3.2 / √510

SE = 0.142

The critical value is looked up in a table or found with a calculator.  But first, we must find the alpha level and the critical probability.

α = 1 - 0.99 = 0.01

p* = 1 - (α/2) = 1 - (0.01/2) = 0.995

Using a calculator or a z-score table:

P(x<z) = 0.995

z = 2.576

Therefore:

CI = 21 ± 0.142 × 2.576

CI = 21 ± 0.365

Round as needed.

8 0
3 years ago
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