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leva [86]
3 years ago
6

A line of 8cm was measured as 8.04cm what is the percentage error​

Mathematics
1 answer:
BlackZzzverrR [31]3 years ago
5 0

Answer:

0.5% error

Step-by-step explanation:

We can use the percentage error formula, which is

\frac{|approx-exact|}{exact}\cdot100.

We know that the approximated value was 8.04, however it is actually 8cm, so we can substitute inside the equation.

\frac{|8.04 - 8|}{8}\cdot100 \\\\\frac{0.04}{8}\cdot100 \\\\0.005\cdot100 \\\\0.5

Hope this helped!

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Please help I am on a timer!!!!❤️❤️❤️❤️
scoray [572]

Answer:

5

Step-by-step explanation:

There are 9 friends with 4 or 5 pets so, you subtract 9-4 because there are 4 friends with 2 or 3 = 5 because the question is asking how many more.

7 0
3 years ago
Dimetri says that a function that is made of terms where the variables is raised only to an odd power will be an odd function.Do
lana [24]

Here we want to study the relation between the exponents in a polynomial function and the "odd" property of functions.

We will see that Dimetri is correct.

-------------------------------

We start by defining an odd function as a function such that:

f(-x) = -f(x).

Now, let's see a simple function with only odd exponents.

f(x) = a*x  (the exponent is 1, so it is odd).

if we evaluate this in x = 1, we get:

f(1) = a

If we evaluate this in x = -1, we get:

f(-1) = a*-1 = -a

Then this is odd.

Now let's see a more general case and why Dimetri is correct.

For the rule of signs, when we multiply 2 negative numbers, the <u>product is positive.</u>

So always that we have an even exponent on a negative number, the outcome will be positive.

This does not happen for odd exponents, because we can't separate all the products in groups of 2, thus if we take the <u>odd exponent of a negative number, the outcome is negative</u>.

Then for functions with only odd exponents, the <u>outcome for evaluating the function in a given input is exactly the opposite of evaluating the same function with the opposite input</u>.

This means that the function is odd.

Again, note that this only happens if the function only has odd exponents.

If you want to learn more, you can read:

brainly.com/question/15775372

6 0
2 years ago
Y = –x + 4<br> x + 2y = –8<br> How many solutions does this linear system have?
masya89 [10]
It only has one solution. x= 16 and y = -12
4 0
3 years ago
Read 2 more answers
lily bought 6 skirts and 5 coats for a total of $452.62. if lily sister bought 3 skirts and 5 coats for $289.36, what was the pr
Vikentia [17]

Answer:

$26.02

Step-by-step explanation:

Let the price of a skirt be A and that of coat be B

Iilly bought 6 skirts and 5 coats for a total of $452.62

That’s

6A + 5B = 452.62

Also, Lilly’s sister bought 3 skirts and 5 coats for $289.36

That’s

3A + 5B = 289.36

We now have two equations

1 . 6A + 5B = 452.62

2. 3A + 5B = 289.36

Subtract equation two from equation one

We have

3A = 163.26

Divide both sides by 3

3A/3 = 163.26/3

A = 54.42

A = $54.42

Now substitute 54.42 for A in either equations to get B the price of a coat

Using equation one, we have

6A + 5B = 452.62

6 x 54.42 + 5B = 456.62

326.52 + 5B = 456.62

Subtract 326.52 from both sides

326.52 - 326.52 + 5B = 456.62 - 326.52

5B = 130.1

Divide both sides by 5

5B/5 = 130.1/5

B = 26.02

= $26.02

A coat cost $26.02

3 0
3 years ago
Find the distance between these two points (-6, -5) and (2, 0)
Charra [1.4K]

Answer:

\sqrt{89}

Step-by-step explanation:

Use Distance Formula

\sqrt{(x_{2}-x_{1}  )^{2}  + (y_{2}-y_{1}  )^{2}  }

Substitute

\sqrt{(-5-0)^{2}+(2+6)^{2} }

Simplify

\sqrt{(-5)^{2}+(8)^{2}  }

Simplify

\sqrt{25+64}

Add

\sqrt{89}

3 0
3 years ago
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