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3 years ago

7

Hey, can someone help me with this :( I've looked all over my book and I can't figure it out. it's a true or false question and

I have a limited amount of tries

1 answer:

algol133 years ago

6 0

Answer:

(number 1 true) ( 2 false ) ( 3 false ) ( 4 true )

Explanation:

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The process of nuclear division that produces haploid sex cells is mitosis. Please select the best answer from the choices provi

Ivanshal [37]

Answer:

Explanation:

meiosis

Haploid sperm and eggs are produced via meiosis.

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3 years ago

_____ are found on chromosomes. <br> Genes <br> The nucleus <br> Mitochondria <br> Vacuoles

pickupchik [31]

Genes are found on chromosomes.

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What mass of NaF must be mixed with 25ml of water to create a 3.5% by mass solution

viva [34]

Answer:

0.91 g NaF

Explanation:

Mass percentage is one way of representing the concentration of an element in a compound or a component in a mixture. Mass percentage is calculated as the mass of a component divided by the total mass of the mixture, multiplied by 100%.

Let mass of NaF = x g

∴ mass percent = mass of NaF / mass of total mixture *100

3.5 = (x/ x + 25) * 100

∴ x = 0.91 g

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3 years ago

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The brightness of a star is determined by _____.

Travka [436]

Answer:

Size and Temperature or E & B

Explanation:

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3 years ago

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could you please explain operations with scientific notation using this example. 5 × 10³ + 4.3 × 10⁴ i dont understand how to so

TEA [102]

Explanation:

The scientific notation:

$a\times10^k$

where

$1\leq a$ and k is integer.

We have the example:

$(5\times10^3)+(4.3\times10^4)$

You can write the numbers in a "normal" form:

$5\times10^3=5\times1000=5000\\\\4.3\times10^4=4.3\times10000=43000$

Make the sum:

$5000+43000=48000$

And next write it in the scientific notation:

$48000=4\underbrace{8000}_{\leftarrow4}=4.8000\times10000=4.8\times10^4$

<h3>Other method:</h3>

You can add numbers in scientific notation if the power of tens in both number is the same.

Therefore you must convert the first number:

$5\times10^3=0.5\times10\times10^3=0.5\times10^4$

Now, you can make the sum:

$(5\times10^3)+(4.3\times10^4)=0.5\times10^4+4.3\times10^4=(0.5+4.3)\times10^4=4.8\times10^4$

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3 years ago