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klemol [59]
2 years ago
9

What is the height of a right triangle if its other two sides are 30 centimeters and 10 centimeters long?​

Mathematics
1 answer:
Mila [183]2 years ago
7 0

Answer:

Step-by-step explanation:

It depends on whether the 30 cm side is the hypotenuse, or one of the legs.

If the 30 cm side is the hypotenuse, then the third side is √(30^2-10^2) = √800 = 20√2 cm

If the 30 cm side is one of the legs, then the hypotenuse is √(30^2+10^2) = √1,000 = 10√10 cm

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"The solution to the system is (#,#)." I'm really tired and for my life don't know the solution. Help please!
Anna71 [15]

Answer: (4,-5)

Step-by-step explanation:

8y = -40

(divide by 8)

y = -5

(plug it in to one of the equations)

3x + 6*-5 = -18

3x + -30 = -18

3x = 12

x = 4

6 0
3 years ago
Sally went school shopping she had a budget of 10.00 she bought a pen for 1.75 and a paper for 1.33 her change was 6.08 how much
irakobra [83]

Answer:

$0.84

Step-by-step explanation:

1. find total cost of both the pen and paper

  • $1.75 + $1.33 = $3.08

2. find the amount Sally spent

  • $10 - $6.08 = $3.92

3. find cost of ruler

  • $3.92 - $3.08 = $0.84
4 0
3 years ago
Solve 2(a + 7) = 5a - 13
timurjin [86]

Answer:

a = 9

Step-by-step explanation:

2(a + 7) = 5a - 13

We want to bring a to one side, I will choose to bring it to the right

First, expand the bracket by multiplying 2 with a + 7

2a + 14 = 5a - 13

Bring the -13 to the left by adding 13 to both sides

2a + 14 + 13 = 5a - 13 + 13

Simplify

2a + 27 = 5a

Bring the 2a to the right by subtracting 2a from both sides

2a - 2a + 27 = 5a - 2a

Simplify

27 = 5a - 2a

27 = 3a

Bring the 3 to the left by dividing both sides by 3

27÷3 = a

Simplify

a = 9

4 0
3 years ago
Samantha saved $13 by buying a used DVD. She paid $5 less than half the original price of a new one. How much did Samantha pay f
Artemon [7]
\$13+\$5=\$18\\\\2\cdot\$18=\$36\leftarrow answer
3 0
3 years ago
Read 2 more answers
There are 312 cards in 6 deck of playing cards write the ratio as a fraction them find the unit rate
ladessa [460]

Answer:

6x: 312

x: 52

Step-by-step explanation:

Let the deck be denoted by x then

6x:  312

There are 312 cards in 6x decks

In 1 deck x there are 312/6= 52 cards

6x: 312

6x/6: 312/6        Cancelling both sides by 6

x: 52

In ratio both the sides are divided by the same number to get equivalent fractions.

In 1 deck there are 52 cards

3 0
3 years ago
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