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Montano1993 [528]

3 years ago

5

24 students in Jan’s class are wearing tennis shoes there are 30 students in class Jamall says that 70% of his class is wearing

tennis shoes is Jamall correct explain your reasoning

1 answer:

Scorpion4ik [409]3 years ago

5 0

(24/30)(100%)= 80%. He is not correct because 80% of the class is wearing tennis shoes.

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Serena estimates that she can paint 60 square feet of wall space every half -hour .Write a equations for the relationship with t

lina2011 [118]

Answer: So, the relationship with i hours as the indecent variables would be $y=120i$

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Step-by-step explanation:

Since we have given that

Area that she can paint = 60 square feet

Time taken = half hour = 30 minutes = 0.5 hours

Using "Unitary method, we get that

In 0.5 hours, she can paint = 60 square feet

In 1 hour, she can paint = $\dfrac{60}{0.5}=120\ sq.\ feet$

In i hours, she can paint = $120\times i\ sq.\ feet=120i\ sq.\ feet$

Let the total area she can paint be 'y'.

So, the relationship with i hours as the indecent variables would be

$y=120i$

Now, Can Serena paint 400 square feet of wall space i. 3.5 hours

We put y = 400 and i = 3.5 hours to check whether it is equal or not.

$400= 120\times 3.5\\\\400\neq 420$

Hence, Serena can't paint 400 square feet of wall space of wall space in 3.5 hours.

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2 years ago

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Luba_88 [7]

Answer:

1.) divisor multiplied by the proper power of ten = 131

2.) dividend multiplied by the proper power of ten = 47

3.) quotient = 2.787

Step-by-step explanation:

1. To make the divisor a whole number you should multiply it by $10^{2}$ = 100

And the divisor and the dividend must be multiplied by the same power of ten, that is $10^{2}$ = 100.

So, multiplyind the divisor by $10^{2}$ = 100:

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And multiplyind the dividend by $10^{2}$ = 100:

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2. Obtain the quotient:

Using the calculator you obtain the quotient between divisor and dividend:

$\frac{131}{47}=2.787$

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Step-by-step explanation:

12 sec ⇒ 8 apps

1 min = 60 sec

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