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3 years ago

I NEED HELP ASAP!!! I don’t understand the question

Mathematics

2 answers:

Helen [10]3 years ago

5 0

Answer:

B, D, E

Step-by-step explanation:

B,

If any number is multiplied by a fraction that is not improper (proper) that means it is going down not up, knocking out A

D,

Just by looking at the equation you can tell 930 is the inital amount

E,

Solve the formula:

930(1/2)^7

Exponents:

930(0.0078125)

Multiply:

7.266

This knocks out C

So B, D, E

I hope this helps u pls give a brainliest and a thx ;)

Sunny_sXe [5.5K]3 years ago

4 0

Answer:

the answer is the 3rd one and the 2nd one

Step-by-step explanation:

You might be interested in

Simplify. √20⋅√3·√18 5√30 5√10 6√10 6√30

ddd [48]

The correct answer is: [D]: " 6√30 " .

_____________________________________

Explanation:

_____________________________________

Simplify: " √20 ⋅ √3 · √18 " :

___________________________

Step 1) Simplify the "first term" :

"√20 " = √4 √5 = 2√5 ;

___________________________

Step 2): Consider the "second term:

"√3 " = √3 (already simplified);

___________________________

Step 3) Simplifly the "third term" :

" √18 " = √9 * √2 = " 3√2 " ;

____________________________

We have: " 2√5 * √3 * 3√2 " ;

= (2* 3) * (√5 * √3 * √2) ;

= 6 * (√5 √3 √2) ;

Note: " (√5 * √3 * √2 )" = " √(5 * 3 * 2) " = " √ 30 " .

So: " 6 * (√5 * √3 * √2) =

______________________________________

→ " 6 √30 " .

______________________________________

The answer is: " 6√30 " ;

→ which is: "Answer choice: [D]: " 6√30 " .

_____________________________________

Hope this answer helps!

Best wishes!

_____________________________________

5 0

3 years ago

Read 2 more answers

A car loses a quarter of its value every year. It is

DerKrebs [107]

Answer:

Step-by-step explanation:

This is an exponential equation of the form

$A=ar^2\text{ where a is the initial value r is the rate and t is the time.}\\ \\ A=35000(0.75)^8\\ \\ A\approx \$ 3504$

7 0

3 years ago

Given the function f(x)=3x+5a / x^2-a^2 find the value of a for which f'(12) = 0

maria [59]

The function, as presented here, is ambiguous in terms of what's being deivded by what. For the sake of example, I will assume that you meant

3x+5a
 f(x)= ------------
 x^2-a^2

You are saying that the derivative of this function is 0 when x=12. Let's differentiate f(x) with respect to x and then let x = 12:

(x^2-a^2)(3) -(3x+5a)(2x)
f '(x) = ------------------------------------- = 0 when x = 12
[x^2-a^2]^2

(144-a^2)(3) - (36+5a)(24)
------------------------------------ = 0
[ ]^2

Simplifying,

(144-a^2) - 8(36+5a) = 0

144 - a^2 - 288 - 40a = 0

This can be rewritten as a quadratic in standard form:

-a^2 - 40a - 144 = 0, or a^2 + 40a + 144 = 0.

Solve for a by completing the square:

a^2 + 40a + 20^2 - 20^2 + 144 = 0
(a+20)^2 = 400 - 144 = 156

Then a+20 = sqrt[6(26)] = sqrt[6(2)(13)] = 4(3)(13)= 2sqrt(39)

Finally, a = -20 plus or minus 2sqrt(39)

You must check both answers by subst. into the original equation. Only if the result(s) is(are) true is your solution (value of a) correct.

6 0

4 years ago

You are given n = 5 measurements: 5, 3, 3, 8, 8. (a) calculate the sample mean, x. (enter your answer to one decimal place.)

mojhsa [17]

The mean = sum of all the measurements / number of measurements (n)

= (5 + 3 + 3 + 8 + 8) / 5

= 27 / 5

= 5.4 Answer

4 0

3 years ago

Which values are equivalent to the fraction below? Check all that apply

vodka [1.7K]

Answer:

A,B,E

Step-by-step explanation:

$3^{5} /3^{8}=3^{5-8}=3^{-3}=1/27=(1/3)^{3}$

4 0

3 years ago