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Oliga [24]
4 years ago
15

Which expression is equivalent to 8 x 2 − 2 x − 3 ?

Mathematics
1 answer:
hjlf4 years ago
3 0

you have to follow PEMDAS. you multiply first and then subtract. I hope this helps and let me know if I got it wrong. Sorry it’s upside down. Click on the picture and then flip it using the icon at the top

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A simple random sample of 49 8th graders at a large suburban middle school indicated that 82% of them are involved with some typ
melamori03 [73]

Answer:

0.142

Step-by-step explanation:

From the question, we identify the following parameters;

n = 49

p = 82% = 82/100 = 0.82

alpha, α = 1-0.99 = 0.01

Zα/2 = Z_0.005 = 2.575

margin of error = Zα/2 * √( p(1-p)/n)

Margin of error = 2.575 * √(0.82)(1-0.82)/49

Margin of error =0.1416005 which is approximately 0.142

5 0
4 years ago
Student tickets for the school play cost $2 less than adult tickets. If a
Gala2k [10]

Answer:

Step-by-step explanation:

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5 0
3 years ago
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What 2 numbers that are between 21.023 and 21.024
nikitadnepr [17]
 the two number between 21.023 and 21.024 are the following: 
21.0234 and 21.0235
4 0
3 years ago
What is an equation in standard form of an ellipse centered at the origin with vertex (-5 0) and co-vertex (0 -3?
Mashutka [201]
The general equation of the ellipse is
\frac{ (x-h)^{2} }{ a^{2} } + \frac{ (y-k)^{2} }{ b^{2} } =1
where (h,k) the coordinates of the center 
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given: center of the ellipse = (0,0)
<span>vertex (-5 , 0) and co-vertex (0 , -3) </span>
∴ (h,k) = (0,0)
∴ a = 5  and   b = 3
So, <span>The equation in standard form of the ellipse is
</span>
\frac{ x^{2} }{ 25 } + \frac{ y^{2} }{ 9 } =1

4 0
4 years ago
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The diameter of Mercury is approximately 4.9×10^3 kilometers. The diameter of Earth is approximately 1.3×10^4 kilometers. About
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 \text {Number of times = } \dfrac{1.3 \times 10^4}{4.9 \times 10^3 }

\text {Number of times = }  \dfrac{1.3}{4.9} \times 10^{4-3}

\text {Number of times = }  0.27 \times 10

\text {Number of times = }  2.7
5 0
3 years ago
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