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4 years ago

4 divide by8/9 - 1/2

Mathematics

1 answer:

Sever21 [200]4 years ago

6 0

I think 4 divided by 8/9 - 1/2 = 4

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-2/5 × -3/7-1/14-3/7× 3/5 step by

Sonja [21]

Answer:

-11/70

Step-by-step explanation:

Rearrange it first, we got:

-2/5 x -3/7 -3/5 x 3/7 -1/14

Then:

=2/5 x3/7 -3/5x3/7 -1/14

(2/5-3/5) x3/7 -1/14

=(-1/5)x3/7 -1/14

=(-3/35)- 1/14

=(-6/70)-5/70

=-11/70

3 0

3 years ago

Angle (theta) is in standard position. If (8,-15) is on the terminal ray of angle (theta), find the values of the trigonometric

mariarad [96]

Answer:

$\sin \theta =\frac{-15}{17}\\cos \theta =\frac{8}{17}\\\tan \theta =\frac{-15}{8}\\\csc \theta =\frac{-17}{15}\\\sec \theta =\frac{17}{8}\\\cot \theta =\frac{-8}{15}$

Step-by-step explanation:

Given: (8,-15) is on the terminal ray of angle

To find: All the trigonometric ratios

Solution:

Trigonometry is a branch of mathematics that explain relationship between the sides and angles of triangles.

If (x, y) lies on the terminal side of θ then $r=\sqrt{x^2+y^2}$

$r=\sqrt{(8)^2+(-15)^2}=\sqrt{64+225}=\sqrt{289}=17$ units

$\sin \theta =\frac{y}{r}=\frac{-15}{17}\\cos \theta =\frac{x}{r}=\frac{8}{17}\\\tan \theta =\frac{y}{x}=\frac{-15}{8}\\\csc \theta =\frac{1}{\sin \theta }=\frac{-17}{15}\\\sec \theta =\frac{1}{cos \theta}=\frac{17}{8}\\\cot \theta =\frac{1}{\tan \theta}=\frac{-8}{15}$

6 0

3 years ago

The length of a rectangle is 5 feet and the width is 8 feet.what is the area of the rectangle

aliya0001 [1]

Answer:

40 ft squared

Step-by-step explanation:

To calculate area of a rectangle, you use the formula length times width, or base times height.

5 x 8 = 40 feet squared

5 0

3 years ago

Shawn read 3/4 of a chapter of his history book in 1/6 of an hour at this rate how many chapters of his history book can he read

seropon [69]

One-sixth of an hour is 10 minute
10 minutes 3/4 chapter
Therefore, 10 minutes x 6= 3/4x6
Shawn can read 4.5 chapters in one hour

4 0

4 years ago

A cookie recipe calls for 4.5 cups of flour, makes 3 dozen cookies. How much flour is needed to make 6 dozen cookies?

joja [24]

Answer:

9 cups

Step-by-step explanation:

3 dozen of cookies : 4,5 cups

6 dozen : more

--- × 4,5 = 9 cups

5 0

3 years ago