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ICE Princess25 [194]
3 years ago
12

Yolanda's age is 5 years less than twice Marco's age. If Yolanda is 15 years old, how old is Marcus? Choose the answer below tha

t is a viable solution to this problem. A. 10 B. 8 C. 5 D. 1
Mathematics
1 answer:
nasty-shy [4]3 years ago
4 0

Answer:

(A) 10

Step-by-step explanation:

Let age of Marco's be "x" years

then according to question

Yolanda age will be "2x - 5"

Also in the question it is given that age Yolanda is 15 years.

then, 2x - 5 = 15

Adding 5 both sides of the equation, we will get

        2x = 20

Dividing both sides of the equality by 2, we get

         x = 10

therefore, Age of Marcus will be 10years

Option (A) is the correct option.

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zubka84 [21]

I assume the equation is supposed to be

3^{x+2}=8^{x-1}

Then we can write

9\cdot3^x=\dfrac18\cdot8^x\implies\left(\dfrac38\right)^x=\dfrac1{72}

Take the logarithm of base 3/8 on both sides:

\log_{3/8}\left(\dfrac38\right)^x=\log_{3/8}\dfrac1{72}

\implies x\log_{3/8}\dfrac38=-\log_{3/8}72

\implies x=-\log_{3/8}72

- - -

If the equation is actually 3^x+2=8^x-1, I'm afraid it cannot be solved exactly.

5 0
3 years ago
Write as a decimal 23/9
Slav-nsk [51]

Answer:

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Step-by-step explanation:

This is the answer because:

1) To convert the fraction to a decimal, you have to divide the numerator by the denominator.

2) Therefore, 23/9 is 2.5 (the 5 is repeating)

Hope this helps!

8 0
4 years ago
Pls help extra points and mark brainlist
Stolb23 [73]

Answer:

the answers are a and d

Step-by-step explanation:

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I need to know what ... means.

Step-by-step explanation:


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3 years ago
Consider a family with 4 children. Assume the probability that one child is a boy is 0.5 and the probability that one child is a
jarptica [38.1K]

Answer:

a) Total 16 possibilities

MMMM

FFFF

MMMF

MMFM

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4 years ago
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