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3 years ago

4/7 divided by 7/2?????

Mathematics

2 answers:

11Alexandr11 [23.1K]3 years ago

8 0

Answer:

8/49

Step-by-step explanation:

4/7 ÷7/2

Copy dot flip

4/7 * 2/7

Multiply the numerators

4*2 = 8

Multiply the denominators

7*7= 49

numerator over denominator

8/49

Goshia [24]3 years ago

4 0

Answer: 8/49

Step-by-step explanation: When dividing by a fraction, we can change the division sign to multiplication and flip the second fraction.

So 4/7 ÷ 7/2 means the same thing as 4/7 · 2/7.

So when dividing by a fraction, we can just multiply by the

reciprocal of that fraction or that fraction flipped.

Now multiply across the numerators

and denominators to get 8/49.

Since 8/49 is in lowest terms, it's our final answer.

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WILL GIVE BRAINLIEST!!! Given tan(theta) = 4/3 and pi < theta < (3pi)/2, find cos(2theta).

babymother [125]

Answer: $\cos 2 \theta = \dfrac{-7}{25}$

Step-by-step explanation:

Given: $\tan \theta = \dfrac{4}{3}$ and $\pi < \theta< \dfrac{3\pi }{2}$

To find: $\cos 2 \theta$

Now as we know

$\cos 2x = \dfrac{1- \tan ^2 x}{1+ \tan ^2 x}$

So we have

$\cos 2 \theta = \dfrac{1-(\dfrac{4}{3} )^2}{1+(\dfrac{4}{3} )^2} \\\\\Rightarrow \cos 2 \theta = \dfrac{1- \dfrac{16}{9} }{1+ \dfrac{16}{9} } = \dfrac{\dfrac{9-16}{9} }{\dfrac{9+16}{9}} = \dfrac{-7}{25}$

Therefore d. is the correct option

Hence , $\cos 2 \theta = \dfrac{-7}{25}$

3 0

3 years ago

Read 2 more answers

Answer and explanation please?

Vadim26 [7]

Answer:

x = 6

Step-by-step explanation:

Line M and line V are parallel so,

Given angles must be alternate angles and alternate angles has equal measurement

so we write an equation to find the value of x:

19x - 4 = 110 add 4 to both sides

19x = 114 divide both sides by 19

x = 6

7 0

3 years ago

The perimeter of a rectangular sandbox is 34 feet if the length of the sandbox is 8 feet what is the width of the sandbox

MrRa [10]

L= length
W= width

Perimeter= 2L + 2W

substitute the known numbers
34 ft= 2(8 ft) + 2W

34= 16 + 2W
subtract 16 from both sides

18= 2W
divide both sides by 2

9 ft= W

ANSWER: The width is 9 feet.

Hope this helps! :)

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3 years ago

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Let x be the amount of time (in minutes) that a particular San Francisco commuter must wait for a BART train. Suppose that the d

babymother [125]

Answer:

a) P (x is less than 11 minutes) = 0.55

P (x is more than 14 minutes) = 0.3

b) P (x is between 8 and 13 minutes) = 0.25

c) P(x < c) =0.8 is 0.05 x c = 0.8

Step-by-step explanation:

a) P (x is less than 11 minutes) = 11 x 0.05

= 0.55

P (x is more than 14 minutes) = 0.05 x (20 - 14)

= 0.05 x 6

= 0.3

b) P (x is between 8 and 13 minutes) = 0.05 x (13 -8)

= 0.05 x 5

= 0.25

c) P(x < c) =0.8

The area between 0 and c is 0.8

Hence,

0.05 x c = 0.8

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3 years ago

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rewona [7]

Answer:

Step-by-step explanation:

You can use the key features (such as the vertex) to determine which is the correct equation

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3 years ago