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2 years ago

What is the answer to this question

Mathematics

1 answer:

almond37 [142]2 years ago

7 0

Answer:

C. 24 1/4

Step-by-step explanation:

You turn both the lowest and the highest values into improper fractions and subtract the numerators then turn it back into a mixed fraction.

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Someone, please! lend me a hand I'm confused

bija089 [108]

I believe the answer is B.

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2 years ago

Identify the sample space of the probability experiment: answering a true or false question.

Rainbow [258]

Answer:

we would need to know what the experiment was or we can't awnser

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3 years ago

Let <img src="https://tex.z-dn.net/?f=sin%5Cbeta%20%3D%5Cfrac%7B2%5Csqrt%5B%5D%7B2%7D%20%7D%7B5%7D%20%5C%5C" id="TexFormula1" ti

Brrunno [24]

Since beta is in the first quadrant, the final answer will be positive.

To find cos(beta) so we can use the half angle identity, we can substitute into the Pythagorean identity. Doing so gives us that

$\sin( \beta ) = \frac{ \sqrt{17} }{5}$

So, this means that

$\sin( \frac{ \beta }{2} ) = \sqrt{ \frac{1 - \frac{ \sqrt{17} }{2} }{2} } = \sqrt{ \frac{2 - \sqrt{17} }{4} } = \frac{ \sqrt{2 - \sqrt{17} } }{2}$

3 0

2 years ago

Jessica and Riley are selling wrapping paper for a school fundraiser. Customers can buy rolls of plain wrapping

bixtya [17]

Answer:

Cost of one roll of plain wrapping: $\$5$

Cost of one roll of holiday wrapping paper: $\$19$

Step-by-step explanation:

Let be "p" the cost in dollars of one roll of plain wrapping paper and "h" the cost in dollars of one roll of holiday wrapping paper.

Based on the information given, we can set up this system of equations:

$\left \{ {{5p+13h=272} \atop {11p+16h=359}} \right.$

In order to solve it, we can use the Substitution method. The steps are:

1. Solve for "p" from the first equation:

$5p+13h=272\\\\5p=272-13h\\\\p=\frac{272-13h}{5}$

2. Substitute the above into the second equation and solve for "h":

$11(\frac{272-13h}{5})+16h=359\\\\598.4-28.6h+16h=359\\\\-12.6h=359-598.4\\\\h=\frac{-239.4}{-12.6}\\\\h=19$

3. Substitute the value of "h" into $p=\frac{272-13h}{5}$ :

$p=\frac{272-13(19)}{5}\\\\p=5$

7 0

3 years ago

1/b+x=3b/2x^2 - 1/x<br>btw ^2 means square<br><br>

AlekseyPX

Answer:

$x = \frac{ - 3b}{4} \: or \: b$

Step-by-step explanation:

$\frac{1}{b + x} = \frac{3b}{2 {x}^{2} } - \frac{1}{x}$

$= > \frac{1}{b + x} = \frac{3b - 2x}{2 {x}^{2} }$

$= > 2 {x}^{2} = (b + x)(3b - 2x)$

$= > 2 {x}^{2} = 3 {b}^{2} - 2bx + 3bx - 2 {x}^{2}$

$= > 2 {b}^{2} = 3 {b}^{2} + bx - 2 {x}^{2}$

$= > 3 {b}^{2} + bx - 4 {x}^{2} = 0$

$= > 3 {b}^{2} + 4bx - 3bx - 4 {x}^{2} = 0$

$= > b(3b + 4x) - x(3b + 4x) = 0$

$= > (3b + 4x)(b - x) = 0$

Hence,

$x = \frac{ - 3b}{4} \: or \: b$

8 0

3 years ago