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3 years ago

5

Steve and Juan are reading the same book, and Juan is about 1/2 of the book ahead of Steve. Which of the following differences m

ost likely represent how much of the book each student has read?
8/9−1/1 1/2

6/7−1/9

15/16−3/8

3/5−61/1

Fractions.

1 answer:

expeople1 [14]3 years ago

5 0

Answer:

6/7-61/1

Step-by-step explanation:

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21. Brian wants to purchase a piece of fabric

ella [17]

Brian should purchase Choice C of fabric

<em><u>Solution:</u></em>

Given that Brian wants to purchase a piece of fabric that is between 49 and 53 inches long

So piece of fabric should be between: 49 and 53 inches

Choice A is $4\frac{3}{4}$ feet long

Let us convert feet to inches

$4\frac{3}{4} feet = \frac{4 \times 4 + 3}{4} = \frac{19}{4} feet$

Now convert to inches

We know that,

1 feet = 12 inches

$\frac{19}{4} feet = \frac{19}{4} \times 12 = 57 inches$

But this choice is greater than given condition that piece of fabric should be between: 49 and 53 inches

So this is not correct

Choice B is $4\frac{1}{2}$ feet long

$4\frac{1}{2} feet = \frac{2 \times 4 + 1}{2} = \frac{9}{2} feet$

Now convert to inches

$\frac{9}{2} feet = \frac{9}{2} \times 12 inches = 54 inches$

But this choice is greater than given condition that piece of fabric should be between: 49 and 53 inches

So this is not correct

Choice C is $4\frac{1}{3}$ feet long

$4\frac{1}{3} feet = \frac{3 \times 4 + 1}{3} = \frac{13}{3} feet$

Now convert to inches

$\frac{13}{3} feet = \frac{13}{3} \times 12 inches = 52 inches$

So this 52 inches lies between 49 and 53 inches

So Brian should purchase Choice C of fabric

8 0

3 years ago

Find all solutions of the equation in the interval [0,2pi)<br> 8sec^2x+4tan^2x-12=0

andrezito [222]

Π/6+2πk
5π/6+2πk
you need to factor and use trig identities

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Find the quotient of quantity of 4 times x to the 3rd power minus 12 times x to the 2nd power plus 8 times x all over negative 4

Salsk061 [2.6K]

I hope I read it correctly and address as such.
Anywho, this is how my teacher taught me to deal with a question like that. Basically just break up the polynomial on top and divide each part separately by the monomial denominator.

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3 years ago

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Help me WILL PICK BRAINLIEST

Elanso [62]

n is 7 :] ...

Step-by-step explanation:

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How many women must be randomly selected to estimate the mean weight of women in one age group. We want 90% confidence that the

Pie

Answer: the required sample size = 155

Step-by-step explanation:

If the standard deviation of the prior study is known, then the formula to compute required sample size:

$n=(\frac{z^*\times\sigma}{E})^2$ , where E = Margin of error, z* = Critical value, $\sigma$ = populion standard deviation.

Given: E = 3.7 , $\sigma=28$

Critical value for 90% confidence = 1.645

Required sample size: $n=(\frac{1.645\times28}{3.7})^2$

$n=(12.4486486486)^2\approx155$

Hence, the required sample size = 155

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3 years ago