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konstantin123 [22]
3 years ago
5

Andre has 60% of his goal of $70 saved for his trip. How much has he saved so far?

Mathematics
1 answer:
dmitriy555 [2]3 years ago
5 0

Answer:

42$

Step-by-step explanation:

So there's an easy way to know this.

100%--$70

60%--x

<em>cross multiply </em>

100x=4200

÷100     ÷100

______________

x=42

So he saved 42$. Hope this helps :D

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En una panadería se elaboraron 140 panes diarios, el 25% son conchas, 10% cortadillos, 40% donas y 25% bolillos. Cada pieza de p
torisob [31]

Answer:

Se obtuvo $ 448 de ganancia por la venta de donas.

Se obtuvo $ 280 de ganancia por la venta de bolillos.

Step-by-step explanation:

1) <em>¿Cuanta ganancia se obtuvo en la venta de donas?</em>

La ganancia es el producto del porcentaje producido de donas, expresado como razón, el precio unitario de la dona y el total producido de panes. Es decir:

C = \frac{40\,donas}{100\,panes}\times (140\,panes)\times \left(8\,\frac{USD}{dona} \right)

C = 448\,USD

Se obtuvo $ 448 de ganancia por la venta de donas.

2) <em>¿Cuanta ganancia se obtuvo en la venta de bolillos?</em>

La ganancia es el producto del porcentaje producido de bolillos, expresado como razón, el precio unitario del bolillo y el total producido de panes. Es decir:

C = \frac{25\,bolillos}{100\,panes}\times (140\,panes)\times \left(8\,\frac{USD}{bolillo}\right)

C = 280\,USD

Se obtuvo $ 280 de ganancia por la venta de bolillos.

3 0
3 years ago
15. Find the value of x and y rounded to the nearest tenth.<br> X<br> 34<br> 45°<br> 30°<br> y
Ugo [173]

Answer:

x = 24.0

y = 46.4

Step-by-step explanation:

Let opposite side = z

Using trigonometry :

Sin 30 = z / 34

z = 0.5 * 34

z = 17

We find x :

Sin 45 = 17 / x

x * sin45 = 17

x = 17 / sin 45

x = 24.04

Let y = y1 + y2

y1 = 17 / tan45

y1 = 17

y2 = 17/tan30

y2 = 29.44

y = 17 + 29.44

y = 46.44

6 0
3 years ago
One half of a number is 14 more than 2 times the number.
frozen [14]

1/2 * n = 2n + 14

Multiply everything by 2 to get rid of the fraction

n = 4n + 28

n - 4n = 28

-3n = 28

n = -9.333333

n = -28/3

7 0
3 years ago
34. The amount of money in an account with continuously compounded interest is given by the formula 1
kirill115 [55]

Answer:

Step-by-step explanation:

I have no idea what formula that is you're using but the one I teach in both algebra 2 and in precalculus for continuous compounding is

A(t)=Pe^{rt}

where A(t) is the amount after the compounding, P is the initial investment, ee is Euler's number, r is the interest rate in decimal form, and t is the time in years. If our money doubles, we just have to come up with a number which will be P and then double it to get A(t). It doesn't matter what number we pick to double, the answer will come out the same regardless. I started with 2 and then doubled it to 4 and filled in the rest of the info given with time as my unknown:

4=2e^{(.062)(t)}

Begin by dividing both sides by 2 to get

2=e^{.062t}

The only way we can get that t out of its current position is to take the natural log of both sides. Natural logs have a base of e, so

ln_e(e)=1 This is because they are inverses of one another. Taking the natural log of both sides:

ln2=.062t Now divide by .062 to get

t = 11.2 years

4 0
3 years ago
Factor completely:
Brums [2.3K]

Answer:

Factor completely:  

3x^2 + 9x-3  

a) 3(x^2+3)

<u>b) 3(x^2+3x-1) </u>

c) 3x(x^2+3x-1)

d) prime

Step-by-step explanation:

Take out the common factor 3

8 0
4 years ago
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