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3 years ago

Can someone give me the answers to these

Mathematics

2 answers:

Maurinko [17]3 years ago

8 0

First we know that a^2+b^2=c^2. We only know a and c so we are trying to find b. You square both numbers and subtract.

13^2 - 8^2=105. Then what you do is square root. √105=10.24695077

Then depending on how many significant figures or decimal places it says you round

(By the way its really hard to understand the numbers ,so the numbers i put might be wrong im not sure. Are they 13 and 8?)

krok68 [10]3 years ago

4 0

Answer:

thanks for free points

Step-by-step explanation:

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In a mall 1/15 of 180 stores sells shoes. How many stores sell shoes?

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3 years ago

Evaluate the expression shown below and write your answer as a fraction in simplest form.

Ierofanga [76]

Answer:

72 / 5

Step-by-step explanation:

( 12 / 5 ) + ( 6 / 5 )

= ( 12 + 6 ) / 5

= 18 / 5

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= ( 18 / 5 ) / ( 1 / 4 )

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3 years ago

The density of concentrated sulphuric acid is 1.8 g/cm.calculate the volume of 3.1 kg of the acid

Sphinxa [80]

Step-by-step explanation:

$density = \frac{mass}{volume} \\ volume = \frac{mass}{density} \\ changing \: 1.8 {gcm}^{ - 3} to \: {kgm}^{ - 3} \\ multiply \: by \: 1000 \\ = 1800 {kgm}^{ - 3} \\ volume = \frac{3.1}{1800} \\ = 0.00172 {m}^{ 3}$

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4 years ago

Alice and Bob each choose a number uniformly (and independently) from the interval [0, 10]. What is the probability that the abs

Neko [114]

Answer:

The probability is zero (0)

Step-by-step explanation:

Given;

interval of numbers to be chosen = 0, 1, 2, 3 , 4, 5, 6, 7, 8, 9 , 10

total possible outcome = 11

The possible numbers whose absolute difference is greater than ¹/₄ includes the following;

(0,1), (1,2), (2,3), (3,4), (4,5), (5,6), (6,7), (7,8), (8,9), (9,10), (10,0)

The probability of this = 11 / 11 = 1

The probability that the absolute value of the difference between their two numbers is less than 1/4

$P(less \ than \ \frac{1}{4} ) = 1 - P(greater \ than \ \frac{1}{4} )\\\\P(less \ than \ \frac{1}{4} ) = 1 - 1 \\\\P(less \ than \ \frac{1}{4} ) = 0$

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3 years ago