3 years ago

Is 1 3/7 a rational number

Mathematics

1 answer:

Luba_88 [7]3 years ago

6 0

Answer:

it is a rational number

Step-by-step explanation:

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A number is randomly selected from {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}. A is represented by the event that the number picked is grea

fomenos

P(A) = P(8) + P(9) + P(10) = 3/10 so P(A complement) = 1 - P(A) = 1 - 3/10 = 7/10 - D

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3 years ago

Read 2 more answers

Which situation can be represented by this equation? 2,500 + 40x = 7,300-60x

koban [17]

Answer:

x= 48

Step-by-step explanation:

$2500+40x+60x=7300\\40x+60x=7300-2500\\100x=7300+2500\\100x=4800\\x=4800/100\\x=48$

4 0

3 years ago

Mary, who is sixteen years old, is four times as old as her brother. how old will mary be when she is twice as old as her brothe

mojhsa [17]

Mary is 2x = 2*12 = 24 years old.

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3 years ago

Which number is irrational 25/9

pantera1 [17]

We have a fraction of two integers, so 25/9 is rational. A rational number is any fraction of two integers (as long as the denominator is not zero).

5 0

3 years ago

1/4(1/3k+9)=6 step 1- 1/3k=15 step 2- 1/3k=15 step 3- k=5 find Olgas mistake step 1 step 2 steps 3 Olga did not make a mistake

shtirl [24]

Answer:

Step 3 contains error.

Step-by-step explanation:

The given equation is :

$\dfrac{1}{4}(\dfrac{1}{3}k+9)=6$

Step 1.

Cross multiplying,

$(\dfrac{1}{3}k+9)=24$

Step 2.

Subtract 9 from both sides

$\dfrac{1}{3}k+9-9=24-9\\\\\dfrac{1}{3}k=15$

Step 3.

Cross multiplying

$k=15\times 3\\\\k=45$

So, there is an error in step 3. The correct answer should be 45.

3 0

3 years ago