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3 years ago

Hello please help i’ll give brainliest

Mathematics

1 answer:

kramer3 years ago

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Find the missing side lengths

Effectus [21]

N= 15
M= 15 √ 3
Brainliest please

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3 years ago

In a right triangle ABC, CD is an altitude, such that AD=BC. Find AC, if AB=3 cm, and CD= root 2 cm.

Nata [24]

Given CD is an altitude such that AD=BC , AB=3 cm and CD= √2 cm.

Let AD=x, Since given AB=3

AD+DB=3

x+DB = 3

DB = 3-x

Since ΔBCD is rght angle triangle, let's apply Pythagoras theorem

$BC^{2} = DB^{2} +CD^{2}$

$BC^{2} = (3-x)^{2} +(\sqrt{2} )^{2}$

$BC^{2} =(3-x)^{2} +2$

Since given AD=BC,let us plugin BC=x in above step.

$x^{2} =(3-x)^{2} +2$

$x^{2} =9-6x+x^{2} +2$

6x=11

x= $\frac{11}{6}$

Now we know AD=x= $\frac{11}{6}$ and given CD=√2.

Let us apply Pythagoras theorem for ΔACD

$AC^{2} =AD^{2} +DC^{2}$

$AC^{2} = (\frac{11}{6} )^{2} +(\sqrt{2} )^{2}$

$AC^{2} =\frac{193}{36}$

$AC=\sqrt{\frac{193}{36} }$ = 2.315cm

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3 years ago

Which relationships are likely to have a positive association? .

uysha [10]

Answer:

A, C

Step-by-step explanation:

A. the distance traveled on a trip and the travel time YES

B. the distance remaining on a trip and the travel time NO

C. the amount of money spent and the the number of shirts bought YES

D. the height of an eighth-grade student and the time to complete a puzzle NO

E. the amount of money owed on a computer and the time making payments NO (the amount of money owed drops with each payment made)

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2 years ago

Solve the equation 4sqrt(3m ^ 2 - 15) = 4

Deffense [45]

Answer:

See the image below:)

Step-by-step explanation:

I can only show half of the steps, but these are some of the steps. You can use the app photo math, just take a picture and it will show you the steps and answer.

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3 years ago

Jim walks 2 miles in an hour. It takes him 3 hrs to walk 6 miles.

pentagon [3]

Answer:

He would walk 10 miles in 5 hours, and it would take him 2 hours to walk 4 miles.

Step-by-step explanation:

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3 years ago

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