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il63 [147K]
3 years ago
15

What is the multiplicative inverse of 2 1/2? A) 2/3 B) 2/5 C)2

Mathematics
2 answers:
ohaa [14]3 years ago
7 0

Answer: B 2/5

Step-by-step explanation: Convert the mixed number  2 1/2 into an improper fraction first by multiplying the denominator  (2) by the whole number part  (2)and add the numerator  (1)  to get the new numerator. Place the new numerator  (5)  over the old denominator (2). And now inverse means opposite, so just flip it.

Finally: 5/2 inverse= 2/5

zheka24 [161]3 years ago
5 0
If you get rid of the whole number in that fraction, you will have 3/2.
So the opposite of that would be 2/3.
I believe the answer is 2/3.
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If the relative frequency of getting a 'red' on a spinner is 0.4, how many reds would you expect to get in 300 spins?
Shkiper50 [21]
You could expect to land on red 120 times because 300*.4=120
6 0
3 years ago
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What is the solution to the equation 2x+4 - 12 = 20?<br> O X=0<br> O X=1<br> O X= 2<br> O X=9
Alex Ar [27]

Answer:

x = 14

Step-by-step explanation:

2x+4 - 12 = 20

2x - 8 = 20

2x = 28

x = 14

5 0
3 years ago
Hi if u could help me that'd be great
WINSTONCH [101]

Answer:

1 hour and 45 minutes

and 1 hour

Step-by-step explanation:

x= run

y= walk

5x+2.5y = distance

5x+2.5(1.5)=12.5

solve for x

5x=8.75

x=1.75

1.75 in hours is 1 hour and (60*.75)=45

1 hour and 45 minutes

" If the marathon race participant ran for 2 hours, how many hours did the participant walk?"

We use the same equation

5x+2.5y=distance

we'll assume that they till walked 12.5 miles

which means that

5(2)+2.5y=12.5

solve for y

2.5=2.5y

y=1

1 hour

8 0
2 years ago
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The table below shows field goal statistics for three different kickers. Order the kickers by their field goal success rate from
nikklg [1K]

Answer:

Kicker C, kicker B, and then kicker A

Step-by-step explanation:

Just divide the field goals made by field goals attempted to get the success rate. A = 12 / 14 = 0.857      B = 15 / 18 = 0.83      C = 19 / 24 = 0.79

0.79 < 0.83 < 0.857

6 0
2 years ago
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El ingreso de una empresa de construcción de obras civiles se estima a través del tiempo de acuerdo con la siguiente función I(t
brilliants [131]

Usando conceptos de funciones cuadráticas, se encuentra que:

  • El máximo ingreso será alcanzado en 6 años.
  • El máximo ingreso será de 800 miles de soles.

La función que estimate el tiempo es dada por:

I(t) = -64 + 288t - 24t^2

Que es una función cuadrática con coeficientes a = -24, b = 288, c = -64.

El año en qué se alcanzará el máximo ingreso es el <u>valor de t de el vertice</u>, o sea:

t_V = -\frac{b}{2a} = -\frac{288}{2(-24)} = \frac{288}{48} = 6

El máximo ingreso será alcanzado en 6 años.

El valor del máximo ingreso es el valor de <u>I de el vertice</u>, o sea:

I_v = -\frac{\Delta}{4a} = -\frac{b^2 - 4ac}{4a}

Entonces:

I_v = -\frac{288^2 - 4(-24)(-64)}{4(-24)} = 800

El máximo ingreso será de 800 miles de soles.

Un problema similar es dado en brainly.com/question/21434178

5 0
2 years ago
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