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3 years ago

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Mathematics

1 answer:

erastovalidia [21]3 years ago

6 0

Answer:

linear

Step-by-step explanation:

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A supermarket stock 210 kg of sugar 55% was sold in a week in a week how many kilograms of sugar were left unsold at the end of

Tems11 [23]

55/100 x 210 = 115.5kg were sold in a week
210-115.5=94.5kg left unsold

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3 years ago

Polygon LMNP slides 5 units right and 4 units down on the coordinate plane. If the original measure of angle M was 50 degrees, w

Pie

The measure of angle M is 45

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3 years ago

Read 2 more answers

1+cos2A /1-cos2A=cotA.cotA

Allisa [31]

Answer:

See Explanation

Step-by-step explanation:

$formulae \: to \: be \: used : \\ \cos 2 \theta = 2 { \cos}^{2} \theta - 1 \\ and \\ \cos 2 \theta = 1 - 2 { \cos}^{2} \theta \\ \\ now \: let \: us \: prove \: the \: given \: trigonometrical \: \\ identity. \\ \\ \frac{1 + \cos2A}{1 - \cos2A} = \cot \: A. \cot \: A \\ LHS = \frac{1 + \cos2A}{1 - \cos2A} \\ \\ = \frac{1 +2 { \cos}^{2} A- 1 }{1 - (1 - 2 { \sin}^{2} A)} \\ \\ = \frac{1 +2 { \cos}^{2} A- 1 }{1 - 1 + 2 { \sin}^{2} A} \\ \\ = \frac{2 { \cos}^{2} A }{2 { \sin}^{2} A} \\ \\ = \frac{{ \cos}^{2} A }{ { \sin}^{2} A} \\ \\ = { \cot}^{2} A \\ \\ = { \cot} A .{ \cot} A \\ \\ = RHS \\ \\ hence \: proved.$

6 0

3 years ago

Let f(x) = |x|, ????(x) = 2f(x), and h(x) = 1 / 2 f(x) for any real number x.

SashulF [63]

Answer:

g(x) = 2|x|

h(x) = $\frac{1}{2}$ |x|

Step-by-step explanation:

If you have g(x)=2f(x) and h(x)= $\frac{1}{2}$ f(x), you can rewrite the expressions in terms of |x| as the following:

- For g(x)=2f(x) you have:

g(x) = 2|x|

-For h(x)= $\frac{1}{2}$ f(x), you have:

h(x) = $\frac{1}{2}$ |x|

8 0

3 years ago

A person standing on a second floor balcony drops keys to a friend standing below the balcony. The keys are dropped from a heigh

Lostsunrise [7]

Answer:

sqrt(3/8) = t

.61237 = t

Step-by-step explanation:

h(t)=−16t^2+10

Let h(t) = 4

4 =−16t^2+10

Subtract 10 from each side

4-10 =−16t^2+10-10

-6 = -16 t^2

Divide by -16

-6/-16 = t^2

3/8 = t^2

Take the square root of each side

sqrt(3/8) = sqrt(t^2)

sqrt(3/8) = t

.61237 = t

We only take the positive since time is not negative

6 0

3 years ago