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3 years ago

Plz help me with this question

Mathematics

1 answer:

Monica [59]3 years ago

7 0

Answer:B

Step-by-step explanation:

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If m∠ADB=(6x−4)° and m∠BDC=(4x+24)°, find the value of x such that ∠ADC is a right angle.

spayn [35]

To make ∠ADC is a right angle, value of x will be 7.

From given figure, it is observed that Angle ADC is combination of two angles ADB and BDC.

∠ADC=∠ADB+∠BDC

Since, ∠ADC is right angle.

So, ∠ADC=90 degree

90=∠ADB+∠BDC

$6x-4+4x+24=90\\ 10x+20=90\\ 10x=70\\ x=7$

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3 years ago

Which solution is possible: 7+x <19 x=4 x=12 x=13 x=19 Other:

Tamiku [17]

Answer:

x = 4

Step-by-step explanation:

Note that it is only less than, not less than or equal too. Numbers that are 11 & less are the only ones that work.

x = 4 is your only answer choice that is less than 11, therefore is your only answer.

4 0

3 years ago

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A ray of light with intensity lo falls vertically on the sur face of the sea and at ten meters deep its intensity is 10/3. Assum

seropon [69]

Answer:

intensity = $\frac{Io}{15}$

intensity = $\frac{Io}{30}$

depth = 333.33 m

Step-by-step explanation:

given data

deep = 10 m

intensity = Io

intensity = Io/3

to find out

intensity of light at 50 m and 100 m and 1/100 of initial intensity remain ?

solution

we know here that intensity is inversely proportional to deep so

intensity = k × $\frac{1}{Deep}$ .................1

here k is constant

so we have given 10 m deep so

$\frac{Io}{3}$ = $\frac{k}{10}$

so k = Io × $\frac{10}{3}$ ................2

so from equation 1 when 100 m deep and 50 m deep

intensity = k × $\frac{1}{Deep}$

intensity = Io × $\frac{10}{3}$ × $\frac{1}{50}$

intensity = $\frac{Io}{15}$

and

intensity = Io × $\frac{10}{3}$ × $\frac{1}{100}$

intensity = $\frac{Io}{30}$

and

at intensity Io/100

intensity = k × $\frac{1}{Deep}$

$\frac{Io}{100}$ = Io × $\frac{10}{3}$ × $\frac{1}{D}$

D = 333.33 m

so depth = 333.33 m

3 0

3 years ago

What is 1.05 x 10^8 written in standard notation?

IceJOKER [234]

Answer:

105000000

Step-by-step explanation:

Since the exponent of the scientific notation is positive, move the decimal point 8 places to the right.

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3 years ago

Handsome Jack is buying a pony made of diamonds. The price of the pony is P dollars, and Jack also has to pay a 25% diamond pony

AveGali [126]

Its B you need to pay the actual price of the pony plus the 25% diamond pony tax

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4 years ago

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