3 years ago

if the body makes 100 billion new blood cells each day,approximately how many blood cells can it make each hour

Mathematics

2 answers:

Greeley [361]3 years ago

8 0

6,000 I think not sure

tiny-mole [99]3 years ago

4 0

Roughly around 5,000

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What is the approximate area of the shaded sector in the circle shown below

saul85 [17]

Answer:

D) 191

Step-by-step explanation:

The entire circle is 254.5, calculated by using this formula

$A=\pi r^{2} \\$

Only 3/4 of the circle is needed for the area, however, so you multiply your area by 0.75

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3 years ago

a store sells small notebooks for $7 and large notebooks for $14. if a student buys 6 note books for $63, how many notebooks eac

bija089 [108]

The answer is 3 of each. 3X7=21; 14X3=42, and 42+21= 63.

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3 years ago

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Write the first five terms of the arithmetic sequence. First term: -8 and common difference: -2

Hunter-Best [27]

Answer:

-8,-10,-12,-14,-16

Step-by-step explanation:

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3 years ago

An item costs $330 before tax, and the sales tax is $23.10 . find the sales tax rate. write your answer as a percentage.

ad-work [718]

Divide sales tax amount over the item's cost
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3 years ago

Divide 12x 4 y 4 by 3x 2 y. A. 4x 6y 5 B. 4x 2y 3 C. 9x 6 D. 9x 2y 3

andrew-mc [135]

Answer:

$\frac{12x^4y^4}{3x^2y}=4x^2y^3$

Step-by-step explanation:

Consider an element $a\neq 0$

We know that $\frac{a^m}{a^n}=a^{m-n}$

Here, m and n are exponents and a is a base. Exponent refers to the no. of times a term is multiplied by itself. Another word for exponents is powers.

Other Properties of exponents:

$a^m\times a^n=a^{m+n}\\a^0=1\\\left ( a^m \right )^n=a^{mn}$

Here, we are required to divide $12x^4y^4$ by $3x^2y$ .

Consider $\frac{12x^4y^4}{3x^2y}$

We will solve $\frac{12}{3}\,,\,\frac{x^4}{x^2}\,,\,\frac{y^4}{y}$ separately.

Here,

$\frac{12}{3}=4\\\frac{x^4}{x^2}=x^{4-2}=x^2\\\frac{y^4}{y}=y^3$

So, $\frac{12x^4y^4}{3x^2y}=4x^2y^3$

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3 years ago