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2 years ago

Segment AB is a line segment on a number line. Endpoint A is at –18, and the midpoint is at -6.

Mathematics

1 answer:

OverLord2011 [107]2 years ago

8 0

It should just be 6 using algebra

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A survey of 102 high school students on the amount of money they spend on prom yields an average of $893. Assuming the populatio

Mnenie [13.5K]

Answer:

Margin of error $=E=[69]$

Step-by-step explanation:

Data provided in the question:

$\bar{x}=\$\ 893$

$\sigma=\$\ 450$

$n=102$

At $88 \%$ confidence level the $z$ is.

$\alpha=1-88 \%=1-0.88=0.12$

$\frac{\alpha}{2}=\frac{0.12}{2}=0.06$

$z_{\frac \alpha 2}=20.06=1.555$

$\text { Margin of error }=E=Z_{\frac \alpha 2} \times \frac{\sigma}{\sqrt{n}}$

$E=1.555 \times \frac{450}{\sqrt{102}}$

Margin of error $=E=[69]$

7 0

2 years ago

Divide (6x3y2 + 12x2y - 8xy) by (2xy)

rosijanka [135]

Answer:

Step-by-step explanation:

6x³y² = 2 * 3 * x³ * y²

12x²y = 2 *3 * 2 * x² * y

8xy = 2 * 2 * 2 *x * y

GCF = 2xy

6x³y² + 12x²y - 8xy = (2xy * 3x²y) + (2xy * 6x) - (2xy * 4)

= 2xy *(3x²y + 6x - 4)

$\dfrac{6x^{3}y^{2}+12x^{2}y-8xy}{2xy}=\dfrac{2xy*(3x^{2}y+6x-4)}{2xy}\\\\\\= 3x^{2}y + 6x - 4$

5 0

1 year ago

What is an equation of the line that passes through the points (3, 1) and (4,4)?

max2010maxim [7]

Answer:

Step-by-step explanation:

y2-y1

x2-x1=

4-3

4-1 = 1/3

y=1/3x

5 0

2 years ago

Change 725 percent to a mixed number

kvv77 [185]

The answer to your question is 7 25/100 or simplified to 7 1/4 because percent means out of 100 and if there is 700 then there is 7 wholes thn you have 25/100 or 1/4

7 0

2 years ago

Find the value of x.

bekas [8.4K]

Answer:

$x=7$

Step-by-step explanation:

The sum of exterior angles of a polygon is equal to 360 degrees
$(12x+37)+(12x-2)+(20x-29)+46=360\\12x+12x+20x+46+37-29-2=360\\44x+52=360\\44x+52-(52)=360-(52)\\44x=308\\x=7$

3 0

2 years ago