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snow_tiger [21]
4 years ago
8

2. Write the expressions using an exponent. Then solve.

Mathematics
2 answers:
Dmitrij [34]4 years ago
8 0

Answer:

a)2^5 b)i dont know what you mean by 5 cubed c)10^7

Step-by-step explanation:

Maurinko [17]4 years ago
7 0
B. Five cubed because there at 5 2s there and 2*2*2*2*2 would be the same thing as saying 5^2
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A school reserved a banquet hall for the spring dance. In addition to a $100 deposit, each couple must pay $20. If the total cos
AnnZ [28]

Step-by-step explanation:

1.)20x + 100 = 1440

-Let the number of couples be x. So, the total amount paid by all the couple’s are $20x. School paid $100 as security, so the total amount paid is

$ (20x + 100)

2.) 20x = 1440 - 100 ⇒ 20x = 1040

X = 52

3. ) The security money  is $100, so the couples paid $1440- 100 = $1040 in total. As the couples paid $ 20 each than- \frac{1040}{20} = 52

5 0
3 years ago
Chloe and Alexis are selling wrapping paper for a school fundraiser. Customers can buy rolls of
Degger [83]

Answer:

hold on let me do this math real quick

5 0
3 years ago
Answer pleaseeeeee!!!
aliina [53]

Answer:

The answer should be B

Step-by-step explanation:

I hope this helps

8 0
3 years ago
Read 2 more answers
Una piscina rectangular de 15 m de largo por 9m de ancho está rodeada por un camino de cemento de ancho uniforme. ¿Si el área de
malfutka [58]

Answer:

El ancho del camino es 1.5 m.

Step-by-step explanation:

Una piscina rectangular posee 15 m de largo por 9 m de ancho.

El área de un rectángulo es igual a la base por la altura. Es decir, lado mayor por lado menor. Entonces el área de la piscina es 15 m* 9 m= 135 m²

La piscina está rodeada por un camino de cemento de ancho uniforme, al cual se denomina x y estará en unidades de metros (m). Entonces el largo de la piscina sumado al ancho a ambos lados de la piscina será 15 m + 2*x, mientras que el ancho de la piscina sumado al largo a ambos lados de la piscina es 9 m + 2*x. Entonces este área se puede expresar como

(15 m+2*x)*(9 m+ 2*x)

Entonces al área de la piscina sumado al camino se le resta el área de la piscina y da como resultado el área del camino, cuyo valor es 81 m²:

El área total - área de la piscina =  área del camino

(15 m +2*x)*(9 m+ 2*x) - 135 m²= 81 m²

Resolviendo:

15*9 m²+15*2*x + 9*2*x + 2*x*2*x - 135 m²= 81 m²

135 m² + 30*x + 18*x + 4*x² - 135 m²= 81 m²

48*x + 4*x² = 81 m²

48*x + 4*x² - 81 m²= 0

Siendo una ecuación cuadrática donde a= 4, b= 48 y c= -81, entonces:

\frac{-48+-\sqrt{48^{2}-4*4*(-81) } }{2*4}

Resolviendo:

\frac{-48+\sqrt{48^{2}-4*4*(-81) } }{2*4}= 1.5

\frac{-48-\sqrt{48^{2}-4*4*(-81) } }{2*4}= -13.5

Como las distancias solo pueden ser positivas, entonces <u><em>el ancho del camino es 1.5 m.</em></u>

En la imagen adjunta se puede observar un gráfico de la piscina más el camino

5 0
3 years ago
∠A and \angle B∠B are vertical angles. If m\angle A=(3x-30)^{\circ}∠A=(3x−30)
Yuki888 [10]

Answer:

x=21\textdegree

Step-by-step explanation:

So we know that:

\angle A=3x-30 \text{ and}\\\angle B=2x-9

And that the two angles are vertical angles.

Since they are vertical angles, their measurements are equivalent. Thus, to find x, set the equations equal to each other:

\angle A=\angle B\\(3x-30)=(2x-9)

Now, solve for x. Add 30 to both sides. The left side cancels:

(3x-30)+30=(2x-9)+30\\3x=2x+21

Now, subtract 2x from both sides. The right cancels:

(3x)-2x=(2x+21)-2x\\x=21

Thus, the value of x is 21.

8 0
4 years ago
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