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Vlad1618 [11]
2 years ago
15

Can someone answer this question please answer it correctly if it’s corect I will mark you brainliest

Mathematics
1 answer:
balandron [24]2 years ago
8 0

Answer:

10%

Step-by-step explanation:

Choices: 2,3,4,5,6  for a total of 5 cards

odd numbers: 3,5

P (odd number) = odd options/ total

                           =2/5

Keeping the odd card ( lets say 3)

Choices: 2,3,4,6  for a total of 4 cards

odd numbers: 3

P (odd number) = odd options/ total

                              1/4

P(odd, no replacement, odd) = 2/5 * 1/4 = 2/20 = 1/10

Changing to a percent = 1/10 *10/10 = 10/100 = 10%

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Can somebody help me solve 8^4v + 5 = 31 ?
bezimeni [28]
8^{4v}+5=31
minus 5 both sides
8^{4v}=26
take the log₈ of both sides
4v=log₈26
divide both sides by 4
v=(1/4)log₈28

if yo use calculator
go back
8^{4v}=26
take ln of both sides
4vln8=ln26
divide both sides by (4ln8)
v=(ln28)/(4ln8)
evaluate
v≈0.40061291017147

3 0
2 years ago
Jenny is 34 she has a 18yr old son how old did she have her son?
salantis [7]

Answer: 16

Step-by-step explanation:

Subtract her age by her son’s age

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2 years ago
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Find the length of the missing side. If necessary, round to the nearest tenth. side A = 38 side b =b side  c = 34
ohaa [14]
A) 51, assuming this is a *right* triangle:

38^2+34^2 = 50.99^2, rounding 51!!
5 0
2 years ago
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Two boats depart from a port located at (–8, 1) in a coordinate system measured in kilometers and travel in a positive x-directi
miss Akunina [59]

Answer:

\left\{\begin{array}{l}y=-\dfrac{1}{9}x^2 +\dfrac{2}{9}x+\dfrac{89}{9}\\ \\y=\dfrac{1}{8}x^2 -7\end{array}\right.

Step-by-step explanation:

1st boat:

Parabola equation:

y=ax^2 +bx+c

The x-coordinate of the vertex:

x_v=-\dfrac{b}{2a}\Rightarrow -\dfrac{b}{2a}=1\\ \\b=-2a

Equation:

y=ax^2 -2ax+c

The y-coordinate of the vertex:

y_v=a\cdot 1^2-2a\cdot 1+c\Rightarrow a-2a+c=10\\ \\c-a=10

Parabola passes through the point (-8,1), so

1=a\cdot (-8)^2-2a\cdot (-8)+c\\ \\80a+c=1

Solve:

c=10+a\\ \\80a+10+a=1\\ \\81a=-9\\ \\a=-\dfrac{1}{9}\\ \\b=-2a=\dfrac{2}{9}\\ \\c=10-\dfrac{1}{9}=\dfrac{89}{9}

Parabola equation:

y=-\dfrac{1}{9}x^2 +\dfrac{2}{9}x+\dfrac{89}{9}

2nd boat:

Parabola equation:

y=ax^2 +bx+c

The x-coordinate of the vertex:

x_v=-\dfrac{b}{2a}\Rightarrow -\dfrac{b}{2a}=0\\ \\b=0

Equation:

y=ax^2+c

The y-coordinate of the vertex:

y_v=a\cdot 0^2+c\Rightarrow c=-7

Parabola passes through the point (-8,1), so

1=a\cdot (-8)^2-7\\ \\64a-7=1

Solve:

a=-\dfrac{1}{8}\\ \\b=0\\ \\c=-7

Parabola equation:

y=\dfrac{1}{8}x^2 -7

System of two equations:

\left\{\begin{array}{l}y=-\dfrac{1}{9}x^2 +\dfrac{2}{9}x+\dfrac{89}{9}\\ \\y=\dfrac{1}{8}x^2 -7\end{array}\right.

7 0
3 years ago
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Can someone please help me with the math problem?
Volgvan

Answer:

i think that the answer is 147

Step-by-step explanation:

i believe that you would be able to multiply 3 time 49 and that is your answer.

4 0
2 years ago
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