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2 years ago

Finding the missing angle measure

Mathematics

2 answers:

noname [10]2 years ago

6 0

Answer: 31°

Since <DAB = 55° and <CAB = 24°, subtract 24 from 55.
55 - 24 = 31

natulia [17]2 years ago

5 0

The answer for this would be 31 degrees.

DAB = 55 deg
Angle A = 24
55 - 24 = 31 degrees

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vagabundo [1.1K]

I would multiply both sides by negative one and then take the smaller of the two variables and subtract that from both sides, simplify and solve.

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3 years ago

Find sin(B), cos(B) and tan(B) for the right triangle ABC shown. Please show your work below.

tangare [24]

Hello!

These are the following formulas to calculate sine, cosine, and tangent.

sin = opposite / hypotenuse

cos = adjacent / hypotenuse

tan = opposite / adjacent

To find sin(B), we need to find the side opposite of angle B, and the hypotenuse.

The opposite of angle B is 12, and the hypotenuse is 13.

sin(B) = 12/13

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To find cos(B), we need to find the side adjacent of angle B, and the hypotenuse.

The adjacent side of angle B is 5, and the hypotenuse is 13.

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To find cos(B), we need to find the side adjacent and opposite of angle B.

The adjacent side of angle B is 5, and the opposite is 12.

tan(B) = (12/5)

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3 years ago

Read 2 more answers

I need help with 20.

irinina [24]

Step-by-step explanation:

why ? you did it right there already.

the numerator is the top part of the fraction, the "counting" part (how many units of a certain type or size are there).

the denominator (the bottom part) is defining the type or size of units described by the fraction.

so, we are adding 4 to the numerator of 2/5, making it (2+4)/5 = 6/5

what do we need to add to the denominator (the bottom part) to make the fraction have the value of 1/2 ?

so, what x would make 6/x = 1/2 ?

6 = x/2

x = 6×2 = 12

so, we need to get 12 in the denominator, where we have currently 5.

therefore, we need to add 12-5 = 7 to it.

so that

6/(5+7) = 6/12 = 1/2

3 0

2 years ago

In a parenting magazine, Mrs. Smith read an advertisement about all the different ways that bleach can be used to kill bacteria.

babymother [125]

Question:

(a) How many bacteria would be found in 24 hours

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The question illustrates an exponential function

$y = ab^x$

Where

$a = Initial\ Value = 1$

$b=Rate = 3$ --- i.e. triples

$x = number\ of\ hours$

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So:

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Substitute $x = 48$ , $b = 3$ and $a = 1$

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$y = ab^x$

$y = 1 * 3^{48$

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$y = 1000$

Substitute $y = 1000$ , $b = 3$ and $a = 1$

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$y = ab^x$

$1000 = 1 *3^x$

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This gives:

$Log1000 = xLog3$

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$x = \frac{Log1000}{Log3}$

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