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2 years ago

MATHMATECIS HELP. HELP APPRECIATED. I NEED AN EXPLANATION STEP BY STEP PLEASE

Mathematics

2 answers:

VARVARA [1.3K]2 years ago

8 0

Answer:

i think B

Step-by-step explanation:

because if we think logically...the price have to more than 10-28.All answer except B are illogical for me i think

hope its help

Leya [2.2K]2 years ago

4 0

Answer:

it's the 2md option

because if you would calculate them and solve it would be something greater than 10

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Solve for t <br> -t=9(t-10)<br> t=

n200080 [17]

-t=9(t-10)
-t=9t-90
90=9t+t
90=10t
90/10=t
9=t

8 0

3 years ago

Read 2 more answers

Someone help lol thx

emmainna [20.7K]

Answer:

which question? you want me to answer

Step-by-step explanation:

7 0

3 years ago

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If f(x) = 2x - 6 and g(x) = 3x + 9, find (f+g)(x)

valina [46]

Answer:

(f+g)(x) = 5x + 3

Step-by-step explanation:

f(x) = 2x - 6 and g(x) = 3x + 9, find (f+g)(x)

(f+g)(x) = f + g = (2x - 6) + (3x + 9) = 5x + 3

(f+g)(x) = f + g = 5x + 3

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3 years ago

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Given f(x) = 4x + 2, find f-1(3).

Alexxandr [17]

Answer:

1/4

Step-by-step explanation:

The inverse function tells you the input value that corresponds to the given output value of the function.

<h3>Application</h3>

You want f^-1(3), which is the value of x such that f(x) = 3.

f(x) = 3 = 4x +2

1 = 4x . . . . . . subtract 2

1/4 = x . . . . . divide by 4

The inverse function of 3 is 1/4:

$\boxed{f^{-1}(3)=\dfrac{1}{4}}$

4 0

2 years ago

A sample of n = 9 college students is used to evaluate the effectiveness of a new Study Skills Workshop. Each student’s grade

forsale [732]

Answer:

B) μD = 0.60 ± 0.10(1.397)

Step-by-step explanation:

The confidence interval is given by:

$MD±t_{\alpha/2, n-1} \frac{s}{\sqrt{n} }$

Where

MD=60

n=9

df=n-1=8

$t_{\alpha/2, n-1}=1.397$

$s=\sqrt{0.09} =0.3$

Then the confidence interval is

μD=0.60±1.397*(0.3/√9)

μD=0.60±0.10*(1.397)

6 0

3 years ago