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3 years ago

Describe the 2 algebraic methods you can use to find the zeros of the function f(t)=-16t^2+400.

Mathematics

1 answer:

butalik [34]3 years ago

5 0

Answer:

Step-by-step explanation:

- 16t² +400 = 0

t² = 400/16

t² = 25

t = 5 or t = - 5

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23.499 rounded to the nearest hundred

telo118 [61]

23.50 is rounded to nearest hundredth

7 0

3 years ago

If you know that log5 (2) - log5 (12) = 0, which of the following is false?

garri49 [273]

Answer:

Step-by-step explanation:

A is correct because $log_5(12)$ was added on both sides, which is supported by the Additive Property of Equality

C is correct because the Quotient Property of Logarithms states that $log_bM-log_bN=log_b(\frac{M}{N} )$

so $log_5(x)-log_5(12)=log_5(\frac{x}{12} )$ is correct

D is correct because using the fact that $log_5x=log_512$ it is easy to figure out that x=12

For B, there is no property supporting that statement.

8 0

3 years ago

Pls help i need to finish this !!

AlladinOne [14]

Answer:

Step-by-step explanation:

it's non-linear

4 0

3 years ago

Read 2 more answers

Find an expression which represents the difference when (2x − 6) is subtracted

Sloan [31]

Answer:

-2x + 8

Step-by-step explanation:

(2x - 6) is subtracted from (7 - 5).

First term that into an equation.

Because our first term is being subtracted from our second one, our equation is written as:

(7 - 5) - (2x - 6).

Simplify the first term by subtracting:

7 - 5 = 2

Now simplify the second term by multiplying 2x - 6 by -1 to get them out of the parenthesis. We do this because there is a negative sign in front of it.

-1 (2x - 6)

-2x + 6

Now our equation is:

2 - 2x + 6

Combine like terms:

2 + 6 = 8

So -2x + 8

(2x - 6) subtracted from (7 - 5) is -2x+8

4 0

1 year ago

You work for a pharmacy and monthly sales of asthma inhalers in your pharmacy follows a normal distribution with a mean of 191 i

grin007 [14]

Answer: -1.33 .

Step-by-step explanation:

Formula to find the Z-score :

$Z=\dfrac{\text{Expected value - Mean}}{\text{Standard deviation}}$

Given: Mean = 191 and Standard deviation = 21

Then , the z-score corresponding to the expected value of 163 will be :

$Z=\dfrac{163-191}{21}\\\\=\dfrac{-28}{21}\approx-1.33$

Hence, the z score corresponding to selling 163 inhalers is -1.33 .

3 0

3 years ago