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3 years ago

Bookshelf is 51 inches tall how tall is it in feet

Mathematics

1 answer:

Igoryamba3 years ago

8 0

The bookshelf is 4'3" tall. There is 12 inches in a foot twelve times 4 is 48. 48 plus three is fifty-one.

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Please help and thank you!

Stolb23 [73]

The conversion is

$x = r \cos \theta$

$y = r \sin \theta$

$\dfrac y x = \tan \theta$

We're given the fairly unusual

$\theta = -\frac 5 2$

It's fairly unusual because usually an angle is given in degrees or radians, and typically the radians are a fraction times pi. We'll assume radians.

$\dfrac y x = \tan \theta = \tan(-5/2) \approx 0.747$

Ah, there's our .75. The approximate answer is

$y = 0.75 x$

Third choice.

The exact answer is

$y = x \tan( -\frac 5 2)$

also a line through the origin.

3 0

3 years ago

Translate into an alegbraic expression and simplify if possible.

serg [7]

Answer:

(10-x)GB

Step-by-step explanation:

Music=10-x, simple arithmetic

6 0

3 years ago

Factor completely: 2a2 − a − 10

bezimeni [28]

Correct answer is D.

$2a^2-a-10
\\2a^2- 5a+4a -10
\\a(2a-5)+2(2a-5)
\\(2a-5)(a+2)$

6 0

3 years ago

B(7, 2) and C(-1,-9) are the endpoints of a line segment. What is the midpoint M of that line

Oksana_A [137]

Answer:

(3,-3.5)

Step-by-step explanation:

$Mid-point formula : \frac{ x_{1} +x_{2}} {2}, \frac{y_{1}+y_{2} }{2} \\\\x=\frac{7+(-1)}{2} , y= \frac{2+(-9)}{2} \\x= \frac{6}{2} , y= \frac{-7}{2} \\x=3 , y= -3.5$

Midpoint M of the line segment is (3,-3.5)

4 0

3 years ago

Samuel measured a piece of construction paper to be 6.75 inches wide by 8.25 inches long. What is the area of the piece of const

Anvisha [2.4K]

Length of the construction paper = 8.25 inches

Width of the construction paper = 6.75 inches

Given the length and width of paper are different, the paper is rectangular,

So, area of rectangle = $length*width$

Area= $8.25\times6.75$

Area = 55.68 square inches.

5 0

3 years ago