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2 years ago

13

At dan's school,6 out of every 10 kids know how to swim. If there are 350 kids in his school,how many know how to swim?

2 answers:

OLga [1]2 years ago

5 0

If the ratio of kids who know how to swim is 6:10, that means that 60% of the schools population knows how to swim. So you can multiply 350 by 0.60 to get 210 kids.

You can show why the calculation is true since 6/10 = x/350. We can say the two ratios are equal since 6/10 ratio holds true for every group of 10 that leading up to a total number of 350. (you can have 35 groups of 10 each one having a 6 to 10 ratio. (6/10)x(35/35)=210/350

Bogdan [553]2 years ago

4 0

210 because if you multiply 10 by 35 to get 350 you have to multiply 6 by 35 then you get 210

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Then divide $0.16 into $0.40
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3 years ago

Which graph represents a function with an initial value of 1/2

melisa1 [442]

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3 years ago

Read 2 more answers

1) h(x)=3x3<br>g(x)= - 4x+1<br>Find (h+g)(10)

Aleksandr-060686 [28]

Answer:

$(h+g)(10) = 2691$

Step-by-step explanation:

$h(x) = 3x^3\\g(x) = -4x+1$

Adding both equations will make it:

$(h+g)(x) = 3x^3-4x+1$

Putting x = 10 will make it:

$(h+g)(10) = 3(10)^3-4(10)+1$

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3 years ago

3. A line goes through the points (3,4) and (-3,6).

Galina-37 [17]

Answer:

Part a) The slope is $m=-\frac{1}{3}$

Part b) The equation in point slope form is $y-4=-\frac{1}{3}(x-3)$

Part c) The equation in slope-intercept form is $y=-\frac{1}{3}x+5$

Step-by-step explanation:

we have the points (3,4) and (-3,6)

Part a) What is the slope of the line?

The formula to calculate the slope between two points is equal to

$m=\frac{y2-y1}{x2-x1}$

substitute the given points

$m=\frac{6-4}{-3-3}$

$m=\frac{2}{-6}$

$m=-\frac{1}{3}$

Part b) Write the equation of the line in point-slope form

$y-y1=m(x-x1)$

we have

$m=-\frac{1}{3}$

$point\ (3,4)$

substitute

$y-4=-\frac{1}{3}(x-3)$ ---> equation in point slope form

Part c) Write the equation of the line in slope-intercept form

$y=mx+b$

we have

$y-4=-\frac{1}{3}(x-3)$

Isolate the variable y

distribute right side

$y-4=-\frac{1}{3}x+1$

Adds 4 both sides

$y=-\frac{1}{3}x+1+4$

$y=-\frac{1}{3}x+5$ ---> equation in slope intercept form

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3 years ago

Identify the terms. Then identify the coefficients of the variable terms of the expression. (Enter your answers as a comma-separ

tino4ka555 [31]

Answer:

The set of coefficients asociated with the given polynomial in ascending order is $[C] = \{4,0,5\sqrt{3}\}$ .

Step-by-step explanation:

Let $y = 5\sqrt{3}\cdot x^{2}+4$ , which is a polynomic function, defined as:

$y = \Sigma_{i=0}^{n}c_{i}\cdot x^{i}$ (1)

Where:

$c_{i}$ - i-th Coefficient.

$x^{i}$ - i-th Power.

$n$ - Grade of the polynomial.

We notice that given polynomial has degree 2 and can be rewritten by applying this definition:

$y = 4 + 0\cdot x + 5\sqrt{3}\cdot x^{2}$

Then, the set of coefficients asociated with the given polynomial in ascending order is:

$[C] = \{4,0,5\sqrt{3}\}$

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3 years ago