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Vlad [161]
3 years ago
7

Graph the line y=-3/4x+1

Mathematics
1 answer:
lesya [120]3 years ago
8 0

Step-by-step explanation:

That is what your line should look like :)

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How do I find the slope of this altitude?<br><br>I am referring to question 19.
Crazy boy [7]
The altitude's slope must be perpendicular to that of the line. 

The slope of segment BC is 2/5. The slope of the altitude must be perpendicular to 2/5. Since the negative reciprocal of 2/5 is -5/2, then the slope of the altitude is -5/2. 
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3 years ago
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Help pls ! I’ll mark brainliest
alexandr402 [8]

Answer:

y = x + 3

Step-by-step explanation:

Y in math is usually referred as the output.

X is usually the input.

In other words,

<em>y</em><em> </em><em>is</em><em> </em><em>3</em><em> </em><em>more</em><em> </em><em>greater</em><em> </em><em>than</em><em> </em><em>x</em><em>.</em>

<em>In</em><em> </em><em>other</em><em> </em><em>words</em><em>,</em>

<em>y = x + 3</em>

5 0
3 years ago
How many counting numbers have three distinct nonzero digits such that the sum of the three digits is 7?​
SOVA2 [1]

Answer:

6

Step-by-step explanation:

You have 2 conditions.

1. The digits must be different.

2. The digits must add to 7.

There aren't very many

124

142

214

241

412

421

That's it. That's your answer. There are 6 of them

7 0
3 years ago
Solve 19.9 = 9 y - 8.<br><br> y =
pogonyaev

Answer:

1.3223 is the answer for y

5 0
3 years ago
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Determine the mean and variance of the random variable with the following probability mass function. f(x) = (216/43)(1/6)^x, x =
anzhelika [568]

Answer:

The mean of function provided is 1.186.

The variance of the provided f(x) is 0.198

Step-by-step explanation:

It is provided that the probability mass function is,

f(x)= (214/43)×(1/6)ˣ; x=1,2,3

The mean is calculated as,

E(X)=∑  x × f(x)

        x

=1×(216/43)×(1/6)¹ + 2 × (216/43)×(1/6)² × 3 × (216/43)×(1/6)³

=36/43 + 12/43  +3/43

​  =1.186

​  

The mean of function provided is 1.186

Explanation | Common mistakes | Hint for next step

The expected value of the probability mass function,f(x)= (216/43×(1/6)ˣ

 is 1.1861.186 .

Step 2 of 2

To calculate the variance, first calculate  E(X²)=∑ x² × f(x)

= 1² ×(216/43) × (1/6)¹ + 2² × (216/43) × (1/6)² × 3² × (216/43) ×(1/6)³

=36/43 +24/43 +9/43

=1.605

​  

The variance is calculated as,

V(X) =E(X²) - [E(X)]²

=1.605 -(1.186)²

= 0.198

The variance of the provided f(x) is 0.198

Explanation | Common mistakes

The variance of function f(x)=(216/43) × (1/6)ˣ ; x =1,2,3 is 0.198

3 0
3 years ago
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