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3 years ago

What is twice 2^30 Write using exponents

Mathematics

1 answer:

quester [9]3 years ago

8 0

$\bf 2\cdot 2^{30}\implies 2^1 \cdot 2^{30}\implies 2^{1+30}\implies 2^{31}$

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Eric earned 60 points on his last test if there were 75 possible points what was his percent grade

Andru [333]

So 75 points is your 100%. You can do 60 over 75 is equal to X over 100. You divide your numerator(60) by your denominator(75) to get 85.7142857%, or to round to your nearest percent, your answer would be roughly 86%.

6 0

3 years ago

What is -5 + 4 please send help

Tema [17]

Answer:

The answer is -1

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3 years ago

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In Nebraska, the mean rain-fed corn yield of harvested fields are normally

NikAS [45]

Answer: 169.2 per acre are produced if a field is in the top 25%.

Step-by-step explanation:

Given: The mean rain-fed corn yield of harvested fields are normally distributed, produce 147.2 bushels per acre with a standard deviation of 33 bushels per acre.

Let X denote the mean rain-fed corn yield of harvested fields.

Let x denotes the number of bushels per acre are produced if a field is in the top 25%.

Top 25% on a density curve means , (100-25%)i.e. 75% area lies below x.

I.e.

$P(X$ .

Z-score for p-value of 0.75 (one tailed)=0.67 [By z-table]

Then, $\dfrac{x-147.2}{33}=0.6744$

$\Rightarrow\ {x-147.2}=33\times0.67\\\\\Rightarrow\ {x-147.2}=22.11\\\\\Rightarrow\ {x}=22.11+147.2=169.31$

Here approx value is 169.2 (from options).

So, 169.2 per acre are produced if a field is in the top 25%.

6 0

3 years ago

Find the HCF a²b²b^4, ab²- b³ and ab(a-b)^4

serious [3.7K]

Answer:

Now,a

−ab

=ab

(a−b)

and

−b

(a−b)

Therefore,therequiredhcfbe

(a−b)

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3 years ago

Pls help me, will give brainliest.

xxMikexx [17]

Answer: i am almost positive its (A)

i really hope im not wrong because this answer is the only one that has a stable rising action going up by the same number it did with the number before it. if its not right then your other option is (D)

Step-by-step explanation:

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2 years ago

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