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sladkih [1.3K]
3 years ago
15

-3/4 - 1/5 divide by 2/5 = ? can you explain how to work this problem also

Mathematics
1 answer:
sweet-ann [11.9K]3 years ago
7 0

<u>Answer:</u>

-2\frac{3}{8}

<u>Step-by-step explanation:</u>

We are given the following expression and we are to solve it:

\frac{-\frac{3}{4} -\frac{1}{5} }{\frac{2}{5} }

Firstly, we will take the LCM of the fractions in the denominator to make it a single fraction and then solve further:

\frac{\frac{-3(5)-1(4)}{20} }{\frac{2}{5} }

\frac{\frac{-15-4}{20} }{\frac{2}{5}}

\frac{-\frac{19}{20} }{\frac{2}{5} }

Changing the division into multiplication by taking a reciprocal of the denominator:

-\frac{19}{20} *\frac{5}{2}

-\frac{19}{8}

-2\frac{3}{8}

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The function f(x) = x2 + 6x + 3 is transformed such that g(x) = f(x − 2). Find the vertex of g(x).
garri49 [273]

Answer:

(-1,-6)

Step-by-step explanation:

f(x)=x^2+6x+3

g(x)=f(x-2)

g(x)=(x-2)^2+6(x-2)+3  (Replaced x in f with (x-2))

g(x)=x^2-4x+4+6x-12+3 (Used (x+b)^2=x^2+2bx+b^2 and distributive property)

g(x)=x^2-4x+6x+4-12+3 (Gathered like terms)

g(x)=x^2+2x-5  (Simplified)

The vertex of a parabola occurs at (\frac{-b}{2a},g(\frac{-b}{2a}).

Let's find \frac{-b}{2a} first.

\frac{-2}{2(1)}=-1

Now we can obtain g(\frac{-b}{2a}) which is g(-1) in this case:

g(x)=x^2+2x-5

g(-1)=(-1)^2+2(-1)-5

g(-1)=1-2-5

g(-1)=-1-5

g(-1)=-6.

The vertex is (-1,-6).

6 0
3 years ago
Consider the graph of the function f(x)=(x−2)12 below. Which statements are true about the function f(x) ? Choose all that are c
Crazy boy [7]

The correct statements regarding the function in the graph are given as follows:

B. The function does not reach a maximum value.

C The function is increasing for all values of x larger than 2.

<h3>What are the correct statements regarding the function?</h3>

The function is defined for values of x or 2 and greater, and the function is increasing until infinity(hence it does not reach a maximum value) for all these values, hence statements B and C are correct.

More can be learned about functions at brainly.com/question/25537936

#SPJ1

5 0
2 years ago
Convert 1 /20 into a decimal and then into a percentage
DerKrebs [107]

Answer:

Decimal 1/20= .05

Percent 1/20= 5%

Step-by-step explanation:

7 0
3 years ago
Given that f(X)=2X-5, find the value of X that makes f(X)=15
amid [387]
X=15 because 2(15) is 30-5 is 15
5 0
3 years ago
Read 2 more answers
What percent is 50% of 50% of x
kiruha [24]

Answer:

um the best i can say is 25% if thats the only info you give

Step-by-step explanation:

6 0
3 years ago
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