3 years ago

In the isosceles △ABC m∠ACB=120° and AD is an altitude to leg BC . What is the distance from D to base AB , if CD=4cm?

Mathematics

1 answer:

WITCHER [35]3 years ago

5 0

4sqrt(3)

See the diagram below.

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A fisherman can row upstream at 5mph and downstream at 10mph he started rowing upstream until he got tired and then rowed downst

AlekseyPX

We have been given that the upstream speed is $5 mph$ and the down stream speed is $10mph$ .

Let the fisherman traveled a distance of x miles.

The total time of the trip is 6 hours.

Relations between speed (s), time (t) and distance (d) is $s = \frac{d}{t}$

Hence, $t= \frac{d}{s}$

Time upstream + time downstream = 6

$\frac{x}{5} +\frac{x}{10} =6$

lcm = 10

$\frac{2x+x}{10} =6$

=> $\frac{3x}{10} =6$

Cross multiplying, $3x= 60$

x = 20 miles .. Answer.

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3 years ago

Use a translation of(x,y) (x+2,y-3). What's the image of D(4,7)

lyudmila [28]

Answer:

(6,4)

Step-by-step explanation:

(4+2,7-3)=(6,4)

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3 years ago

NEED HELP ASAP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! WILL GIVE 99 pts AND BRAINLIES

spin [16.1K]

Answer:

Step-by-step explanation:

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‼️PLEASE HELP‼️‼️ Juan has $13 dollars in his piggy bank. Each week on Monday, he gets $10 for his allowance . Write a function

Semmy [17]

Answer:

f(x) = 10x + 13

Function f(7) = 83

Step-by-step explanation:

y = 10x + 13

f(x) = 10x + 13

Function f(7) = 10(7) + 13

Function f(7) = 83

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3 years ago

Write the equation of the line that is parallel to y =- 2x + 5 and goes through the point (2, -3)

algol [13]

Answer:

y = -2x + 1

Step-by-step explanation:

Parallel lines are two lines that have the same plane and slope but never intersect.

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3 years ago