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alexdok [17]
3 years ago
14

Find the value of x

Mathematics
1 answer:
Lostsunrise [7]3 years ago
7 0

Step-by-step explanation:

In a right angle triangle one angle is 90°

w.k.t sum of angles in a triangle is 180°

thus, 2x+15+x+90°=180°

3x+105°=180°

3x=75°

x= 75/3=25°

Hope this helps you.

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What is a 96% confidence interval for the proportion of weight-lifting injuries in this age group that were accidental?
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2 years ago
Use the four functions below for this question:
Jlenok [28]

Answer:

We have four functions:

For f(x) we have two points (-2,2) and (-1,-1)

we will use two point form which is:

y-y_1=\frac{y_2-y_1}{x_2-x_1}(x-x_1)

So, on substituting the values we get:

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y=-3x-4

So, f(x)=-3x-4

We have g(x)=3x-4

Now, we will from h(x) we have two points  let initial point on monday is (0,4) and tuesday (1,1) again use two point form we get:

y-4=-3(x-0)

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So, h(x)= -3x+4

Now, we will form j(x) we have three points (2,10) , (-2,6) and (2,22)

We will use (-2,6) and (2,22)  to find the function with two point form.

y-6=\frac{22-6}{2+2}x+2)

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j(x)= 4x+14

To find the slope we will compare the given function with general equation which is y= mx +c; m is the slope

And to find y-intercept we will put x=0

f(x)=-3x-4

Slope is: -3

And y-intercept is: (0,-4)

g(x)=3x-4

Slope is: 3

And y-intercept is: (0,-4)

h(x)= -3x+4

Slope is: -3

And y-intercept is: (0,4)

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Slope is: 4

And y-intercept is: (0,14)

8 0
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