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-Dominant- [34]
3 years ago
12

Si sacas una carta al azar de un mazo estándar de 52 cartas, ¿Cuál es la probabilidad de que obtengas una carta que sea menor a

cinco o una de diamante?
Mathematics
1 answer:
Firdavs [7]3 years ago
3 0
Answer: 3

Explanation: 3
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Identify this conic section. x 2 + y 2 = 25 line circle ellipse parabola hyperbola
patriot [66]

Answer:

circle

Step-by-step explanation:

The equation

x² + y² = r²

Represents a circle centred at the origin with radius r

x² + y² = 25 ← is in this form and

is a circle centre (0, 0) with r = 5

7 0
3 years ago
Read 2 more answers
Determine if the graph is symmetric about the x-axis, the y-axis, or the origin.<br> r = 9 sin 7θ
boyakko [2]

Answer:

The given function symmetric about the y-axis.

Step-by-step explanation:

The given function is

r=9\sin 7\theta                .... (1)

1. Symmetry about the x-axis: If the point (r, θ ) lies on the graph, then the point  (r,-θ ) or (-r, π - θ ) also lies on the graph.

2. Symmetry about the y-axis: If the point (r, θ ) lies on the graph, then the point (r,π - θ ) or (-r, -θ ) also lies on the graph.

3. Symmetry about the origin: If the point (r, θ ) lies on the graph, then the point (-r, θ ) or (r, π + θ ) also lies on the graph.

Put (r, -θ ) in the given function.

r=9\sin 7(-\theta)=-9\sin 7\theta=-r\neq r

Therefore it is not symmetric about x-axis.

Put (-r, -θ ) in the given function.

-r=9\sin 7(-\theta)=-9\sin 7\theta=-r

Therefore it is symmetric about y-axis.

Put (-r,θ ) in the given function.

-r=9\sin 7(\theta)=r\neq -r

Therefore it is not symmetric about the origin.

3 0
3 years ago
A group of farmers bought 28 tractors and trucks. There were 1.8 times more tractors than trucks. How many tractors and how many
Oxana [17]
There are 10 trucks and 18 tractors
I found that out by multiplying 10 and 1.8 which gave me 18
when u add 10 and 18 u get 28
5 0
3 years ago
Read 2 more answers
Can someone help me really please
JulsSmile [24]

Answer:

26

Step-by-step explanation:

Let x represent the missing number

8\frac{11}{15} = 7\frac{x}{15}

Convert both fractions to improper fractions

\frac{131}{15} = \frac{105 + x}{15}

Cross multiply

15(105 + x) = 15(131)

1,575 + 15x = 1,965

Subtract both sides by 1,575

15x = 1,965 - 1,575

15x = 390

Divide both sides by 15

x = \frac{390}{15}

x = 26

4 0
3 years ago
What percent of 27 is 10
Lapatulllka [165]
10 is 37.037 percent of 27
8 0
3 years ago
Read 2 more answers
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