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3 years ago

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Jenna has a piece of paper that is 84 square inches in area. it is 10 1/2 inches long. what is the length of the piece of paper

in square inches

1 answer:

11Alexandr11 [23.1K]3 years ago

6 0

I hope this helps you

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If you received a score of 80% on an assignment,what is the ratio of correct answers to incorrect answers

Cerrena [4.2K]

Im not really sure so ill just give it a try.
mayeb 70? ten less"

6 0

3 years ago

Select the following lines that would be perpendicular to y = 3x + 1. (Select ALL correct)

max2010maxim [7]

Answer:

The line passing through points (1,4) and (4,3).

The line passing through points (1,-4) and (4,-5).

Step-by-step explanation:

Since the equation is y=3x+1

If it was perpendicular, it means the slope would be the negative reciprocal.

So the slope would be -1/3

9-8/6-3=1/3 (not negative) <u>No</u>

3-4/4-1=-1/3 <u>Yes</u>

-5+4/4-1=-1/3 <u>Yes</u>

6-3/5-4= 3/1 <u>No</u>

6 0

3 years ago

Suppose you take a simple random sample of size n=175 from the population of Reese's Pieces, still assuming that 45% of this pop

Gnesinka [82]

Answer:

The probability is $P(0.35$

Step-by-step explanation:

From the question we are told that

The sample size is n = 175

The population proportion is p = 0.45

Generally the mean of the sampling distribution is $\mu_{x} = 0.45$

Generally the standard deviation is mathematically represented as

$\sigma_{x} = \sqrt{\frac{p (1-p)}{n} }$

=> $\sigma_{x} = \sqrt{\frac{0.45 (1-0.45)}{175} }$

=> $\sigma_{x} = 0.0376$

Generally the probability of that the sample proportion of orange candies will be between 0.35 and 0.55 is

$P(0.35 < X < 0.55) = P( \frac{0.35 - 0.45}{0.0376} < \frac{X -\mu_{x}}{\sigma_{x}} < \frac{0.55 - 0.45}{0.0376} )$

=> $P(0.35$

Generally $\frac{X - \mu_{x}}{\sigma_{x}} = Z (The \ standardized \ value \ of X)$

So

$P(0.35$

=> $P(0.35$

From the z-table

$P( Z< 2.6595 ) = 0.99609$

and

$P( Z< - 2.6595 ) = 0.0039128$

So

$P(0.35$

=> $P(0.35$

3 0

3 years ago

A first number plus twice a second number is 14. twice the first number plus the second totals 31. find the numbers.

topjm [15]

------------------------------------------------------------
Define the two numbers
-----------------------------------------------------------
Let the first number be x.
Let the second number be y.

------------------------------------------------------------
Form equations and solve x and y
------------------------------------------------------------
x + 2y = 14 ------------------ (1)
2x + y = 31 ------------------ (2)

------------------------------------------------------------
Equation (1) x 2
------------------------------------------------------------
2x + 4y = 28 ---------------(1a)

------------------------------------------------------------
Equation (1a) - 2
------------------------------------------------------------
3y = 28 - 31
3y = -3
y = -1

------------------------------------------------------------
Substitute y = -1 into (1)
------------------------------------------------------------
x + 2(-1) = 14
x -2 = 14
x = 14 + 2
x = 16

------------------------------------------------------------
Answer: x =16, y = -1
------------------------------------------------------------

4 0

3 years ago

<img src="https://tex.z-dn.net/?f=%28-4%29%28-2%29-6%282-5%29" id="TexFormula1" title="(-4)(-2)-6(2-5)" alt="(-4)(-2)-6(2-5)" al

solong [7]

Answer:

26

General Formulas and Concepts:

<u>Pre-Alg</u>

Order of Operations: BPEMDAS

Step-by-step explanation:

<u>Step 1: Define expression</u>

(-4)(-2) - 6(2 - 5)

<u>Step 2: Evaluate</u>

Parenthesis (Subtract): (-4)(-2) - 6(-3)
Multiply: 8 + 18
Add: 26

4 0

3 years ago