3 years ago

Determine the number of significant digits in each measurement.

Mathematics

1 answer:

Marina CMI [18]3 years ago

5 0

4 significant figures. All figures are significant because the zeros are in between two significant digits

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The estimated product of two numbers that are not multiples of 10 is 2800. what is the question?

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You need to find the 2 numbers that will estimate to the nearest hundred.
here is your answer 13 x 213

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Suppose the lengths of two sides of a right triangle are represented by 2x and 3 (x + 1), and the longest side is 17 units. Find

densk [106]

Answer:

x=4

Step-by-step explanation:

Step 1:-

given the lengths of two sides of a right angle are represented by 2x and 3(x+1) and longest side is 17 units.

AB = 2x and BC = 3(x+1) and longest side AC= 17

by using Pythagoras theorem

$AC^2 = AB^2 + BC^2$

step 2:-

The hypotenuse is longest side is AC = 17 units

(17)^2 = 4x^2 +9(X+1)^2

on simplification, we will use formula

$(a + b)^2 = a^2 +2ab+b^2$

289 = 4x^2 +9(x^2+2x+1)

$13x^2 +18x-280 = 0$

finding factors 70 X 52 = 3640

$13x^2 +70x-52x-280 = 0$

$13x^2 -52x+ 70x-280 = 0$

Taking common , we get

13x(x-4)+70(x-4)=0

x-4=0 and 13x+70=0

x=4 and $13x =-70$

x=4 and $x=\frac{-70}{13}$

we can not choose negative value so x value is 4

Final answer:- x = 4

verification:-

$AC^2 = AB^2 + BC^2$

289 = 4(4)^2+9(4+1)^2

289 = 64 +9(25)

289=289

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3 years ago

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Jessica completed 20 haircuts in 8 hours. On average how many haircuts per hour did Jessica do?

jeka94

Answer:

two and a half

Step-by-step explanation:

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3 years ago

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