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3 years ago

What are the rules for multiplying\dividing decimals

Mathematics

1 answer:

pav-90 [236]3 years ago

7 0

The rules for multiplying and dividing decimals are;

Multiplying decimals:

- Multiply as usual, ignoring the decimals.

- Determine the total number of digits behind the original numbers' decimal points.

- Place the same number of digits behind the decimal point in the product.

Dividing Decimals:

-If the divisor is not a whole number, move decimal point to right to make it a whole number and move decimal point in dividend the same number of places.

- Divide as usual. ...

- Put decimal point directly above decimal point in the dividend.

- Check your answer

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Solve for a :<br> w=7a+4b

rosijanka [135]

Answer:

w=7a+4b

or,w-4b=7a

or,(w-4b)/7=a

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3 years ago

Supply the missing information for each of the right triangles described below. In each example, θ = angle, O = opposite side, A

blagie [28]

Answer:

$\therefore O = 1.9096$

Step-by-step explanation:

Six trigonometric ratio:

$sin\theta=\frac{opposite}{hypoteuse}$

$cos\theta=\frac{adjacent}{hypotenuse}$

$tan \theta=\frac{opposite}{adjacent}$
$cosec\theta=\frac{hypotenuse}{opposite}$
$sec\theta=\frac{hypotenuse}{adjacent}$
$tan \theta=\frac{adjacent}{opposite}$

Given that,

θ = angle, O= opposite side, A= adjacent side and H = hypotenuse.

H=11, sin θ=0.1736

We know that,

$sin\theta=\frac{opposite}{hypoteuse}$

$\Rightarrow 0.1736=\frac{O}{11}$

$\Rightarrow O = 11 \times 0.1736$

$\Rightarrow O = 1.9096$

$\therefore O = 1.9096$

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4 years ago

Find A and B

mash [69]

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3 years ago

This summer, Nora spent 8 days visiting her aunt and 2 weeks visiting her grandmother. In all, how many days did she spend visit

balandron [24]

Answer:

Step-by-step explanation:

1 week = 7 days

2 weeks= 14 days

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4 years ago

If a light ray is relflected off the shiny surface at 170 degrees, at what angle did the light ray first strike the surface?

tiny-mole [99]

Answer:

10 degrees

Step-by-step explanation:

take 180-170

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you only need to try to get to 180

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