MATHEMATICS MIDDLE SCHOOL

The average adult human has approximately 2.5 X 10' red blood cells and 7 X 10' whiteblood cells. About how many times as great is the number of rea blood cells than the
number of white blood cells? Write and solve an equation.

Answers

Answer 1

Answer:

Answer:

$\large \boxed{r =\frac{\text{RBC}}{\text{WBC}};\,\text{400 times}}$

Step-by-step explanation:

I think your missing numbers are

RBC = 2.5 × 10¹³ and

WBC = 7 × 10¹⁰

This is a ratio question.

You are asked to find the ratio of RBCs to WBCs.

Let r = the ratio.

Then the equation for the ratio is

$\mathbf{r} =\mathbf{ \frac{\text{RBC}}{\text{WBC}}}$

Insert the values and do the division.

$\begin{array}{rcl}r& =& \frac{\text{RBC}}{\text{WBC}}\n\n& =&(2.5 * 10^(13))/(7 * 10^(10))\n\n& =&\mathbf{400}\n\end{array}\n\text{The number of RBCs is $\large \boxed{\textbf{400 times}}$ as great as that of the WBCs.}$

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If f(x) = 3x2 - 4 and g(x) = x +2, find (f-g)(x)

Answers

Answer:

3x^2 -x-6

Step-by-step explanation:

If f(x) = 3x^2 - 4 and g(x) = x +2

(f-g)(x)

I like to line them up vertically

3x^2 - 4

-( x +2)

----------------------

Distribute the minus sign

3x^2 - 4

- x -2

----------------------

3x^2 -x-6

What number is fifteen sixty percent of

Answers

I'm pretty sure it is 25. A method you could use(calculator would be more quicker, but by hand works too) is dividing 15 by sixty percent. To do that, u find the decimal of sixty percent. You would move the decimal point of sixty(the original place of the decimal would be 60.0) two places to the left. Then 60% would become 0.60. But, you could simplify that to 0.6, then you do 15 divided 0.6. You would get 25. If you are doing it by hand, double check the answer by multiplying it with the decimal and you should get the original number(which is 15 in this case). I hope this helped :)

In how many ways can you arrange the letters in the word GRADE?

Answers

dare
raged
dreg
egad
rage
drag
dear
gaed
gear
Ager
aged
grad
read
ged
gad
erg
era
rag
ear
reg
dag
are
age
red
rad

a total of 33 words

I'll do my best to answer this one.

For the first choice you have 5 options
You have 4 options for the second choice
You have 3 options for the third choice
You have 2 options for the fourth choice
You have 1 option for the fifth choice

5+4+3+2+1 = 15
15x5 = 75.

Either that or it might be 5! ie. 120. If anybody can validify/disprove this that would help

You want to know more about Dante's homework. Which situation about his homework best represents the inequality 3x + 12 ≤ 48?A.
Dante spends 12 minutes reading the lesson and 3 minutes completing each math problem. How many problems can he finish in 48 minutes?

B.
Dante spends 12 minutes completing each math problem and 3 minutes reading the lesson. How many problems can he finish in 48 minutes?

C.
Dante spends 12 minutes on his math homework and 3 minutes to complete each problem. How long does it take him to finish 48 problems?

D.
Dante completes 12 math problems and reads 3 pages in his math book. How many problems can he finish in 48 minutes?

Answers

I think its D. Yeah I'm pretty sure its D

Number 4 Dante completes 12 math problems and reads 3 pages in his math book . How many problems can he finish in 48 minutes?Hoped I helped ! ! !

What is the lcm of 60

Answers

You need more numbers

The question is sort ..

Using a transit, a surveyor measures the angle between two trees to be 111 degrees. If the first tree is 62 feet from the transit and the second tree is 58 feet from the transit, what is the distance between the two trees?