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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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Lauren packs in order of blocks into crates and 7 steps how many blocks does Lauren pack
allsm [11]
She needs 27 crates to make 7 steps. It makes more sense if you draw it out for yourself. 
8 0
3 years ago
Which statements are true about the ordered pair (10, 5) and the system of equations?
Alexeev081 [22]

Answer:

C

Step-by-step explanation:

We have the system of equations:

\left\{\begin{array}{ll}2x-5y=-5 \\ x+2y=11\end{array}

And an ordered pair (10, 5).

In order for an ordered pair to satisfy any system of equations, the ordered pair must satisfy both equations.

So, we can eliminate choices A and B. Satisfying only one of the equations does not satisfy the system of equations.

Let’s test the ordered pair. Substituting the values into the first equation, we acquire:

2(10)-5(5)\stackrel{?}{=}-5

Evaluate:

20-25\stackrel{?}{=}-5

Evaluate:

-5\stackrel{\checkmark}{=} -5

So, our ordered pair satisfies the first equation.

Now, we must test it for the second equation. Substituting gives:

(10)+2(5)\stackrel{?}{=} 11

Evaluate:

20\neq 11

So, the ordered pair does not satisfy the second equation.

Since it does not satisfy both of the equations, the ordered pair is not a solution to the system because it makes at least one of the equations false.

Therefore, our answer is C.

3 0
3 years ago
Need help with numbers 39 through 42
Nata [24]
The answer is 15x good luck on your homework buddy

7 0
3 years ago
20. What is the volume, in terms of r, for a cylindrical
inysia [295]

Step-by-step explanation:

Volume of cylindrical container

= \pi {r}^{2} h \\  \\  = 3.14 \times ( {3.25)}^{2}  \times 10 \\  \\  = 3.14 \times 10.5625 \times 10 \\  \\  = 331.6625  {cm}^{3}  \\  \\  \approx \: 331.66 \:  {cm}^{3}

4 0
3 years ago
Please help! Will mark BRAINLIEST!
Softa [21]

your awnser was hard and complicated but i think i got it 7214.485x^10y^10

7 0
3 years ago
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