3 years ago

Help please, geometry question.

Mathematics

1 answer:

Inessa05 [86]3 years ago

5 0

I can help, whats the question

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In the figure if angleACB = angleCDA, AC = 8 cm and AD= 3 cm, then BD is<br>

tatiyna

Answer:

AC = 8 cm,

AD = 3 cm and ∠ACB = ∠CDA

From figure,

∠CDA = 90°

∴ ∠ACB = ∠CDA = 90°

In right angled ∆ADC,

AC2 = AD2 + CD2

⇒ (8)2 = (3)2 + (CD)2

CD2 = 64 – 9 = 55

⇒ CD = √55 cm

In ∆CDB and ADC.

∠BDC = ∠AD [each 90°]

∠DBC = ∠DCA [each equal to 90°-∠A]

∴ ∠CDB ∼ ∆ADC

Then,

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2 years ago

Suppose the postal service charge is $10.30 per pound on a package shipped to England what is this rate in dollars per ounce

laila [671]

Answer: The required rate = 0.64 per pounce.

Step-by-step explanation:

We are given that,

Postal service charge = $10.30 per pound.

As we know, 1 pound = 16 ounces.

So, Postal service charge = $10.30 per 16 ounces.

Postal service charge $=\$\dfrac{10.30}{16}\ \text{ per ounce}$

$\approx 0.64\text{ per ounce}$

Hence, the required rate = 0.64 per pounce.

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3 years ago

Solve for a.<br><br> 5a - 2 = 23

Sphinxa [80]

The answer to the question is 5

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16+4(c-5)=220 what is c

djyliett [7]

Answer:

c=205

Step-by-step explanation:

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Find the measure of the missing angle. 122,79,90,Z

Alexxx [7]

The total amount of angles in quadrilateral is 360.so:

z=360-(122+79+90)
z=360-291
z=69

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3 years ago