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3 years ago

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A clothing store paid an import tax of $32 on a shipment of $800 worth of silk scarves. The import tax rate is always the same.

What would be the value of silk scarves that have an import tax of $120?
PLZ SHOW WORK!

1 answer:

bekas [8.4K]3 years ago

4 0

This will be your formula:
$\frac{32}{800} = \frac{120}{x}$
cross multiply (32 times x) (120 times 800)
this is what you'll get:

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How many terms are in the binomial expansion of (2x 3)5? 4 5 6 7

padilas [110]

In the binomial expansion (2x + 3)^5 , there are 6 terms.

According to the question, given that

Binomial expansion (2x + 3)^5

Number of terms in a binomial expansion of (x + y)^n is

N = n + 1 words in total

In the binomial expansion (2x + 3)^5

n = 5

N = 5 + 1 = 6

Therefore, In Binomial expansion (2x + 3)^5 there are 6 terms.

The algebraic expression (x + y)n can be expanded according to the binomial theorem, which represents it as a sum of terms using separate exponents of the variables x and y. Each word in a binomial expansion has a coefficient, which is a numerical value.

The formula for expanding the exponential power of a binomial expression is provided by the binomial theorem, sometimes referred to as the binomial expansion. The following is the binomial expansion of (x + y)n using the binomial theorem:

$(x+y)^n = n_C_{0} * n_y_{0} + n_C_{1} * n-1_y_{1} + n_C_{2} * n-2_ y_{2} + ... + n_C_{n-1} * 1_y_{n-1} + n_C_{n} * 0_y_{n}$

To learn more about binomial theorem visit here : brainly.com/question/2165968

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1 year ago

3. For a month, a parent offers to increase her son’s allowance by $4 each week. If he earned $9 the first week, how much will h

devlian [24]

Step-by-step explanation:

it would be 9+4=13+4=17 answer $17

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3 years ago

I need help with number 4

Nadusha1986 [10]

$\bf \begin{cases}
\quad3x+2y=-9\\
-10x+5y=-5
\end{cases}$

so hmm the idea behind the elimination, is to make the value atop or below, of either variable, the same but with a negative sign

so hmmm say... we'll eliminate "y"

so... let's see, we have 2y and 5y, both positive
what do we multiply 2y to get a negative -5y, that way, -5y +5y = 0 and poof it goes

well let's see, let's try "k" $\bf 2yk=-5y\implies k=-\cfrac{5y}{2y}\implies k=-\cfrac{5}{2}$

so.. if we multiply 2y by -5/2, we'll end up with -5y

well, let's multiply that first equation then by -5/2

$\bf \begin{array}{rllll}
3x+2y=-9&\qquad\times -\frac{5}{2}\implies &-\frac{15}{2}x-5y=\frac{45}{2}\\\\
-10x+5y=-5&\implies &-10x+5y=-5\\
&&---------\\
&&\frac{-35}{2}x+0\quad=\frac{35}{2}
\end{array}\\\\
-----------------------------\\\\
\cfrac{-35}{2}x=\cfrac{-35}{2}\implies \cfrac{-35x}{2}=\cfrac{-35}{2}\implies x=\cfrac{2}{-35}\cdot \cfrac{-35}{2}
\\\\\\
\boxed{x=1}$

so.. now we know x = 1.... so let's plug that in say hmmm 2nd equation

$\bf -10(1)+5y=-5\implies -10+5y=-5\implies 5y=5\implies\boxed{ y=1}$

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3 years ago

The length of a rectangle is twice its breadth. If its perimeter is 60 cm, find the length and the breadth of the rectangle

Vaselesa [24]

Answer:

Length is <u>20 cm</u>
Breadth is <u>10 cm</u>

Step-by-step explanation:

<h3>According to the Question</h3>

It is given that,

Length of rectangle is twice as its breadth
Perimeter of Rectangle = 60cm

We have to calculate the length and

breadth of the rectangle.

Let the breadth be x cm.

then,

Length be 2x cm.

Calculating the length and breadth-

Perimeter of Rectangle = 2(Length+breadth)

By putting the value we get-

→60 = 2(2x+x)

→60 = 2(3x)

→60 = 6x

→x = 60/6

→ x = 10 cm

Since, breadth is <u>10</u> cm.

Therefore, Length = 2x = 2×10 = 20 cm.

Hence, the length and breadth of rectangle is 20 cm & 10 cm respectively.

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Which transformation gives the same result as a reflection over the x-axis followed by a reflection over the y-axis?

sergiy2304 [10]

Answer:

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Step-by-step explanation:

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