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olga2289 [7]
3 years ago
7

Samual walk foward 19 steps. He represents this movement with a positive 19. How would he represent the opposite of this number?

Mathematics
2 answers:
weqwewe [10]3 years ago
7 0
-19
because 19 is the opposite of -19 as you might have learnt in opposite number
lozanna [386]3 years ago
6 0

Answer:

Negative 19

Step-by-step explanation:

If he walks forward 19 steps, then, he lands on positive 19.  If the number is positive 19, then it's opposite would be negative 19.

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Insects known as walking sticks move very slowly. They can move 2 inches every 5 seconds. At this rate, how far could a walking
Arisa [49]
2/5 = x/30......2 in to 5 sec = x in to 30 sec
cross multiply
5x = 60
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6 0
3 years ago
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Find the mean and standard deviation for the set of data.
dem82 [27]

The mean and standard deviation for the set of data will be 16 and 5.87. Then the correct option is A.

<h3>What is a standard deviation?</h3>

It is the measure of the dispersion of statistical data. Dispersion is the extent to which the value is in a variation.

The set of data is given below.

16, 22, 8, 5, 20, 18, 14, 17, 24

The mean of the data set will be

μ = (16 + 22 + 8 + 5 + 20 + 18 + 14 + 17 + 24) / 9

μ = 144 / 9

μ = 16

Then the standard deviation of the data set will be

\rm \sigma = \sqrt{\dfrac{\Sigma (x_i - \mu)^2}{n}} \\\sigma = \sqrt{\dfrac{(16 - 16)^2 +(22 - 16)^2 + (8-16)^2 + ......+(24-16)^2  }{9}} \\\sigma = \sqrt{\dfrac{310}{9}}\\

Simplify the expression further, then we have

σ = √34.44

σ = 5.87

The mean and standard deviation for the set of data will be 16 and 5.87.

Then the correct option is A.

More about the standard deviation link is given below.

brainly.com/question/12402189

#SPJ1

3 0
1 year ago
Factorise fully the following:<br>a) x² + 2x<br>b) 2x² - 6x<br>c) 15x - 10x³<br>d) 9x² + 3x³​
Lostsunrise [7]

Answer:

a) x(x+2)

b) 2x(x-3)

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d) 3x^2(3+x)

Step-by-step explanation:

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When factoring a binomial (a polynomial with two terms), what we will be looking for are the terms that are shared between them.

In this problem, it can be seen that both of these terms have and x. This means that we can factor it out to get

x(x+2)

b) 2x^2-6x

What are the common terms here?

It can be seen that each of these share a 2x, so our factored form would be

2x(x-3)

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What about this one?

The common factor of this one is 5x, so our factored form would be

5x(3-2x^2)

d) 9x^2+3x^3

The common factor of this one is 3x^2, so our factored form would be

3x^2(3+x)

6 0
3 years ago
-4p+9=-5 solve the equation
scoray [572]

Answer:

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Step-by-step explanation:

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3 0
2 years ago
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The prime factorization of 576 is ??
nalin [4]
<span> the </span>factors<span> 2 x 2 x 2 x 2 x 2 x 2 x 3 x 3 = </span>576<span>. bc when u mulpile them all they make that answer

</span>
4 0
3 years ago
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