All categories

3 years ago

Multiply. Express your answer in lowest terms. You MUST show your work to receive credit for this problem -4 2/3 x 7 1/2

Mathematics

2 answers:

deff fn [24]3 years ago

3 0

You first multiply the denominator with the whole number for both fraction.
then add the nominator to what you got and put it in fraction form by getting your sum and put find the normal denominator as the the new fraction
then you can cross simplify and then multiply or just multiply and then simply
by doing simplifying fist you get the same multiple and divide

BigorU [14]3 years ago

3 0

1.) Change the mixed numbers into an improper fraction.
-4 2/3 changes into -14/3
7 1/2 changes into 15/2.

2.) Now you have -14/3•15/2.

3.) Look and see if you can cross cancel. This case you can. -14 changes to -7 and 2 changes to 1. 15 changes to 5 and 3 changes to -1

4.) Now have -7/1 x 5/1.

5.) Multiply the numerators. -7 x 5 is -35.

6.) Your answer -35.

You might be interested in

Two produce stores sell watermelon by the pound

Lunna [17]

Whats the question tell me and i'll try to help

3 0

4 years ago

An algebra 2 question..... about cosine.

zvonat [6]

Answer:d i believe

Step-by-step explanation:

if im wrong i will get hate comments, im already hated by everyone so it dont matter

6 0

3 years ago

15 Point award! :)

NISA [10]

We can solve this question easiest by putting it as 2 equations.

First, well put the original equation, 2c+5b=55,000. B stands for the cost of backyard pool weddings and c stands for the cost of carribean weddings.

We got this equation because the question states that there were 2 carribean weddings and 5 pool weddings, and the amount of money obtained was $55,000 total as a result.

Now, we’ll put the extra information into an equation, c-10,000=b. We got this equation because it clearly states that backyard pool weddings cost 10,000 less than Caribbean, so c-10,000=b.
Now, we have to solve. Since the first equation has 2 variables, it is unsolvable. This is where the second equation comes in. We can rewrite c-10,000=b as b+10,000=c.

Now, since b+10,000=c, substitute b+10,000 for c in the first equation.
The result is 2(b+10,000)+5b=55,000.
Now that we only have one variable in the equation, it is solvable.
20,000+7b=55,000
7b=55,000
B=7,857
Now to solve for c, insert 7,857 for b in the second equation.
7,857+10,000=c
17,857=c
The cost of carribean weddings was $17,857.
The cost of a backyard pool wedding was $7,857.
Hope this helps!

4 0

4 years ago

An envelope from the post office is 6 inches wide and 8 inches long. what is the perimeter of the envelope

ehidna [41]

The answer is 28 inches

4 0

3 years ago

Read 2 more answers

Find a formula for dy/dx if sin x + cos y + sec(xy) = 251

Lena [83]

Answer:

$\displaystyle \frac{dy}{dx} = \frac{-cos(x) - ysec(xy)tan(xy)}{-sin(y) + xsec(xy)tan(xy)}$

General Formulas and Concepts:

Pre-Algebra

Distributive Property

Algebra I

Factoring

Calculus

Derivatives

Derivative Notation

Derivative of a constant is 0

Trig Differentiation

Derivative Rule [Chain Rule]: $\displaystyle \frac{d}{dx}[f(g(x))] =f'(g(x)) \cdot g'(x)$

Implicit Differentiation

Step-by-step explanation:

Step 1: Define

Identify

sin(x) + cos(y) + sec(xy) = 251

Step 2: Differentiate

[Implicit Differentiation] Trig Differentiation [Chain Rule]: $\displaystyle cos(x) - sin(y)\frac{dy}{dx} + sec(xy)tan(xy) \cdot (y + x\frac{dy}{dx}) = 0$
[Subtraction Property of Equality] Isolate $\displaystyle \frac{dy}{dx}$ terms: $\displaystyle -sin(y)\frac{dy}{dx} + sec(xy)tan(xy) \cdot (y + x\frac{dy}{dx}) = -cos(x)$
[Distributive Property] Distribute sec(xy)tan(xy): $\displaystyle -sin(y)\frac{dy}{dx} + ysec(xy)tan(xy) + xsec(xy)tan(xy)\frac{dy}{dx} = -cos(x)$
[Subtraction Property of Equality] Isolate $\displaystyle \frac{dy}{dx}$ terms: $\displaystyle -sin(y)\frac{dy}{dx} + xsec(xy)tan(xy)\frac{dy}{dx} = -cos(x) - ysec(xy)tan(xy)$
Factor out $\displaystyle \frac{dy}{dx}$ : $\displaystyle \frac{dy}{dx}[-sin(y) + xsec(xy)tan(xy)] = -cos(x) - ysec(xy)tan(xy)$
[Division Property of Equality] Isolate $\displaystyle \frac{dy}{dx}$ : $\displaystyle \frac{dy}{dx} = \frac{-cos(x) - ysec(xy)tan(xy)}{-sin(y) + xsec(xy)tan(xy)}$

Topic: AP Calculus AB/BC (Calculus I/II)

Unit: Implicit Differentiation

Book: College Calculus 10e

5 0

3 years ago