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Eduardwww [97]
3 years ago
15

A test that is valid must have scores that fit a normal curve A be reliable B be normed on a random sample C predict future beha

vior D reveal important information
Mathematics
1 answer:
sasho [114]3 years ago
4 0

Answer:

A: be reliable

Step-by-step explanation:

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What is the slope-intercept form of the function described by this table?
Andru [333]

Answer:

<em>y = - 3x + 4 </em>

Step-by-step explanation:

m = \frac{y_{2} -y_{1} }{x_{2} -x_{1} }

y - y_{1} = m( x - x_{1} ) Point-slope form

y = mx + b  Point-intercept form

(1, 1)

(2, - 2)

m = (- 2 - 1 ) / (2 - 1) = - 3

y - 1 = - 3( x - 1 )

<em>y = - 3x + 4</em>

6 0
3 years ago
Anyone know how to do this?
Svetach [21]
Answer: 5^(-18)

Step by step solution: See photo

7 0
3 years ago
The sides of the rectangle are in the ratio of 4:7. If its length is 31.5 in., find the width, the perimeter, and the area of th
AveGali [126]
Let \ell the length and w the width. By the ratio of the sides:

\dfrac{w}{\ell}=\dfrac{4}{7}\Longrightarrow \dfrac{w}{31.5}=\dfrac{4}{7}\Longrightarrow w=\dfrac{4\cdot31.5}{7}\Longrightarrow \boxed{w=18~in.}

Now, we'll find the perimeter p. We'll use the formula below:

p=2(\ell+w)\\\\&#10;p=2(31.5+18)\\\\&#10;p=2\cdot49.5\\\\&#10;\boxed{p=99~in.}

The area of a rectangle is S=w\cdot\ell. Then:

S=w\cdot\ell\\\\&#10;S=18\cdot31.5\\\\&#10;\boxed{S=567~in.^2}
8 0
3 years ago
Read 2 more answers
PLEASE HELP
bearhunter [10]

Answer:

i'm pretty sure 1.96×10-3 m³

is the right answer

7 0
3 years ago
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Equivalent fraction of 5/6
Zarrin [17]
The list is long, but here goes:

10/12, 15/18, 20/24, 25/30, 30/36, ... and so on.
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3 years ago
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