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2 years ago

Please help i will give brainliest

Mathematics

1 answer:

nexus9112 [7]2 years ago

8 0

Answer: y = 8x + 20

Step-by-step explanation: each cd costs 8 so headset cost 20.

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Explain why the expressions 8x(6-4) and 8x6-4 do not have the same value even though they look very similar? HELP!! PLEASE EXPLA

QveST [7]

Answer:

Because 8x6 gives you the same figure.

Step-by-step explanation:

4 0

3 years ago

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What’s the answer thank you for your help

frez [133]

The formula for finding the sum of a finite geometric series is
$S_n = a_1( \frac{1-r^n}{1-r} )$

n = 17, $a_1 = 3$ , r = 2

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3 years ago

Leah multiplied the number 2 by itself 4 times (2x2x2x2). Deshon multiplied the number 4 by itself 2 times (4x4). Which product

Bas_tet [7]

Answer:

The answer is 2x2x2x2.

Step-by-step explanation:

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2 years ago

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Can someone explain y-intercept? I had a test, and I am pretty sure I bombed it. I really need help!!

Dvinal [7]

Y-intercept, it can be described as y-intercept form, or another way of writing it in mathematical form is y=mx+b, this can be used to draw polygons, find ortho-centers (very difficult), etc. m is the rise/run, rise over run, or 1/2. The rise and the run is the rate of change. b is the starting point or slope where it starts at, that is most of it!

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3 years ago

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In a pizza takeout restaurant, the following probability distribution was obtained for the number of toppings ordered on a large

Elis [28]

Answer:

The random variable (number of toppings ordered on a large pizza) has a mean of 1.14 and a standard deviation of 1.04.

Step-by-step explanation:

The question is incomplete:

The probability distribution is:

x P(x)

0 0.30

1 0.40

2 0.20

3 0.06

4 0.04

The mean can be calculated as:

$M=\sum p_iX_i=0.3\cdot 0+0.4\cdot 1+0.2\cdot 2+0.06\cdot 3+0.04\cdot 4\\\\M=0+0.4+0.4+0.18+0.16\\\\M=1.14$

(pi is the probability of each class, Xi is the number of topping in each class)

The standard deviation is calculated as:

$s=\sqrt{\sum p_i(X_i-M)^2}\\\\s=\sqrt{0.3(0-1.14)^2+0.4(1-1.14)^2+0.2(2-1.14)^2+0.06(3-1.14)^2+0.04(4-1.14)^2}\\\\s=\sqrt{0.3(-1.14)^2+0.4(-0.14)^2+0.2(0.86)^2+0.06(1.86)^2+0.04(2.86)^2}\\\\ s=\sqrt{0.3(1.2996)+0.4(0.0196)+0.2(0.7396)+0.06(3.4596)+0.04(8.1796)}\\\\s=\sqrt{0.3899+0.0078+0.1479+0.2076+0.3272}\\\\ s=\sqrt{ 1.0804 }\\\\s\approx 1.04$

3 0

3 years ago