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sasho [114]
3 years ago
6

Please help me on this

Mathematics
2 answers:
Lelu [443]3 years ago
8 0
I need the points my bad
stich3 [128]3 years ago
4 0
Both are A)

I used the calculator both
On 12 I just plugged in the answers and I figured out which one equaled to each other.

I also used the calculator on 13
I plugged in the x to the equation given.
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Ms. Bell's mathematics class consists of 14 sophomores, 6 juniors, and 10 seniors.How many different ways can Ms. Bell create a
prohojiy [21]

Ms. Bell's mathematics class consists of 14 sophomores,

Ms. Bell create a 4-member committee of sophomores

if each sophomore has an equal chance of being selected

this is a combination

\begin{gathered} ^{14}C_4=\frac{14!}{4!(14-4)!} \\ =\frac{14!}{14!\times10!} \\ =1001 \end{gathered}

The answer is 1001.I’ve completed answering the question.

8 0
1 year ago
HELP Me .............
rusak2 [61]
I think it is the third one necause......
5 0
4 years ago
HELP!! I need to do this today (Show steps) first answer gets BRAINLY
ELEN [110]

Answer:

A. 7.50 per box

Step-by-step explanation:

We know that when there are 4 boxes, we make 30 dollars. Divide 4 from 30 to get 30/4 which is equal to 7.5. This means we make 7.5 dollars per box.

If this helps please mark as brainliest

6 0
3 years ago
Complete the sentences to tell about the number 55.
ki77a [65]

Answer:5 10 15 and so on

Step-by-step explanation:it is numbers that are in the 55 times table

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
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