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2 years ago

Work out 5 3/4 - 2 1/4

Mathematics

2 answers:

Scrat [10]2 years ago

7 0

Answer:

$3\frac{1}{2}$

Step-by-step explanation:

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

slavikrds [6]2 years ago

5 0

The answer is 14/4 or 3 2/4

5 3/4 = 23/4
2 1/4 = 9/4
23/4 - 9/4 = 14/4 or 3 2/4

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PLSSSSSSSSSSSSSSSSSSSSSSSSSS ANSWER THIS

postnew [5]

Step-by-step explanation:

$(a.y^{3} +3y^{2} -3 ) = (ay^{2} +(4a+3)y +4(4a+3))(y-4) +64a+45$

so A = 64a +45

( $2y^{3} -5y+a =(2y^{2} +8y +27)(y-4) +108 +a$

so B = 108 +a

2A-B=0--> 2(64a+45)-108-a=0--> a =18/127

7 0

2 years ago

please help! functions and relations. f(x)= square root of x-4. find the inverse of f(x) and it’s domain.

likoan [24]

ANSWER:

$\:D.\text{ }f^{-1}\left(x\right)=\left(x+4\right)^2;x\ge-4$

STEP-BY-STEP EXPLANATION:

We have the following equation:

$f(x)=\sqrt{x}-4$

The inverse is the following (we calculate it by replacing f(x) by x and x by f(x)):

$\begin{gathered} x=\sqrt{f^{-1}(x)}-4 \\ \\ \sqrt{f^{-1}(x)}=x+4 \\ \\ f^{-1}(x)=(x+4)^2 \end{gathered}$

The domain would be the range of the original equation, and it would be the range of values that f(x) could take, which was from -4 to positive infinity, that is, f(x) ≥ -4.

Therefore, the domain is x ≥ -4.

So the correct answer is D.

$\:f^{-1}\left(x\right)=\left(x+4\right)^2;x\ge -4$

4 0

2 months ago

Jada solved the equation Negative StartFraction 4 over 9 EndFraction = StartFraction x over 108 EndFraction for x using the step

Lilit [14]

Answer: First option.

Step-by-step explanation:

The complete exercise is attached.

In order to solve this exercise, it is necessary to remember the following property:

The Multiplication property of Equality states that:

$If\ a=b\ then\ a*c=b*c$

In this case, the equation that Jada had is the folllowing:

$-\frac{4}{9}=\frac{x}{108}$

Jada needed to solve for the variable "x" in order to find its value.

The correct procedure to solve for for "x" is to multiply both sides of the equation by 108. Then, you get:

$(108)(-\frac{4}{9})=(\frac{x}{108})(108)\\\\-48=x$

As you can notice in the picture, Jada did not multiply both sides of the equation by 108, but multiplied the left side by $-\frac{4}{9}$ <em> </em>and the right side by $-\frac{9}{4}$ .