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zysi [14]
3 years ago
9

The currency in Brazil is called the Brazilian real and is represented by R$. A Brazilian real is similar to the US dollar in th

at R$1 is divided into 100 parts, called centavos.
Fatima lives in Michigan and is traveling to Brazil. She knows R$1 = $0.32 (US).

How many Brazilian real will she receive when she exchanges $750 (US)?
Mathematics
1 answer:
Lunna [17]3 years ago
7 0
3.2 to 10 would be the ratio

10 divided by 3.2 is 3.125 so

$750 (USD) times 3.125 = R$2,343.75

Someone correct me if I'm wrong.
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Factor completely 2x5 + 10x4 − 22x3.
Luba_88 [7]

Given equation is :

2x^{5}+10x^{4}-22x^{3}=0

Taking out 2x^{3} common we get,

x^{2}+5x-11=0

Now solving this we get,

As 11 is not factor-able, we will solve it using the formula,

x=\frac{-b+\sqrt{b^{2}-4ac}}{2a}

a=1 b=5 and c=-11

we get,

x=\frac{-5+\sqrt{69} }{2} and x=\frac{-5-\sqrt{69} }{2}

5 0
3 years ago
Read 2 more answers
f(x) = 20(1.5)x. Let your dependent variable in the function be y. Write the function that models the independent variable in te
mars1129 [50]

Answer:

x=log_{1.5}(\frac{y}{20})

Step-by-step explanation:

Considering the function:

f(x) = 20\, (1.5)^x

The independent variable is "x" and we are asked to model it in terms of the variable "y":

f(x) = 20\, (1.5)^x\\y=20\, (1.5)^x

Then, in order to solve for x (which resides in the exponent), we need to use the logarithm function.

Since the base of the exponent is 1.5, we need to use the logarithm base 1.5, to lower that exponent "x":

y=20\, (1.5)^x\\\frac{y}{20} =(1.5)^x\\log_{1.5}(\frac{y}{20}) =x\\x=log_{1.5}(\frac{y}{20})

6 0
3 years ago
) Luci Lulu opened a cookie store in the mall. She found that the relationship between the price of a cookie, p, and the number
lozanna [386]

Answer:

The maximum revenue Luci can make selling cookies in one day is $4,004,000.

Step-by-step explanation:

Given;

x = −2000 p + 4000 ..................... (1)

Revenue = xp

Revenue = (−2000 p + 4000)p =

Revenue = −2000p^2 + 4000p .................... (2)

The price at which Luci will the maximum profit can be calculated by finding the derivative of equation (2), equating to 0, and then solve for p as follows:

−4000p + 4000 = 0

4000 = 4000p

p = 4000 / 4000

p = 1

This implies that the price at which Luci will the maximum profit is $1.

Substituting p = 1 into equation (2) to obtain the maximum revenue Luci can make selling cookies in one day, we have:

Revenue = (−2000 * 1)^2 + (4000 * 1)

Revenue =  −2000^2 + 4000

Revenue = 4,000,000 + 4000

Revenue = 4,004,000

Therefore, the maximum revenue Luci can make selling cookies in one day is $4,004,000.

8 0
3 years ago
Help please pleasdes​
kobusy [5.1K]

Answer: Triangle A'B'C is an enlargement of triangle ABC

Step-by-step explanation: When figuring out whether a dilation of a triangle is an enlargement or reduction, you see if the scale factor is larger or smaller than 1. If the scale factor is less than 1, it's a reduction. If the scale factor is larger than 1, it's an enlargement. 4/3 > 1 so this means the triangle gets bigger and is an enlargement. This means triangle A'B'C is an enlargement of triangle ABC.

4 0
3 years ago
Help i always mark brainliest to whoever answers first
belka [17]

Answer:

<em>(0, 2)</em>

Step-by-step explanation:

Function is the relation where each value of "x" has single value of "y"

The table contains pair (0, - 2) if table would include (0, 2) the relation in table would be not a function.

8 0
3 years ago
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