3 years ago

Part

Mathematics

1 answer:

vitfil [10]3 years ago

8 0

Answer:

Step-by-step explanation:

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I NEED ANSWER ASAP! I WILL GIVE BRAINELIEST!!!!!! Construct a right triangle whose legs are in the ratio 3:4. What are the ratio

Gala2k [10]

Answer:

3 : 5, 4: 5

Step-by-step explanation:

Let the common multiplier of the given ratios be x.

Therefore, lengths of the legs of right triangle would be 3x and 4x

By Pythagoras Theorem:

${hyp}^{2} = {(3x)}^{2} + {(4x)}^{2} \\ = 9 {x}^{2} + 16 {x}^{2} \\ = 25 {x}^{2} \\ hyp = \sqrt{25 {x}^{2} } \\ hyp = 5x \\ \\ ratios \: of each \: leg \: to \: the \: hypotenuse \\ \frac{3x}{5x} = 3 : 5 \\ \\ \frac{4x}{5x} = 4 : 5$

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3 years ago

A fish tank has 9 goldfish, 6 tetras, 5 snails and 3 platies. What is the ratio of tetras to platies

Andrei [34K]

Answer:

6:3

Step-by-step explanation:

6 tetras and 3 platies

3 0

2 years ago

This is just for fun!

bixtya [17]

Addition or multiplication
add 2 or times 2

8 0

3 years ago

A washer and dryer cost $803 combind the washer costs $47 less then the dryer whats is the cost of the dryer

Naddik [55]

Answer:

the dryer costs $425

Step-by-step explanation:

x = washer

y = dryer

x + y = 803

x = y - 47

using the second equation a substitute in the first equation we get

y - 47 + y = 803

2y = 850

y = $425

FYI

x = y - 47 = 425 - 47 = $378

3 0

3 years ago

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Evaluate x² + 4x + 1 when x = -3

Masteriza [31]

Substitute -3 to x

(-3)^2 + 4(-3) + 1

9 - 12 + 1

= -2

3 0

2 years ago

Read 2 more answers