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stealth61 [152]
3 years ago
8

Chapter 8 question 18 please help

Mathematics
1 answer:
MA_775_DIABLO [31]3 years ago
4 0
4744 feet. work below. please mark brainliest.
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Which expressions are equivalent to 2(-6c+3)+4c2(−6c+3)+4c2, left parenthesis, minus, 6, c, plus, 3, right parenthesis, plus, 4,
Klio2033 [76]
A because it’s 8c+6-8c+6 minus
3 0
2 years ago
A survey was done that asked people to indicate whether they preferred to swim in a pool or in an ocean. The results are shown i
posledela
Given:
                                 Pool swimming        Ocean swimming    Total
Age 30 and younger             228                         54                 282
Over 30 years old                142                        185                 327
total                                    370                        239                609

Frequencies:
                                Pool swimming        Ocean swimming    Total
Age 30 and younger     228/609 = 0.37         54/609 = 0.09       282/609 = 0.46
Over 30 years old        142/609 = 0.23       185/609 = 0.30       327/609 = 0.54
<span>total                           370/609 = 0.61       239/609 = 0.39       609/609 = 1.00</span>

<span>The relative frequency (rounded to the nearest hundredth) of a person over 30 years old who prefers to swim in the ocean is 0.30</span>    
8 0
3 years ago
Read 2 more answers
Please help me!!
quester [9]

Answer:

Step-by-step explanation:

A. False. The probability of drawing a green marble twice is even smaller (It may be true though depending on what the question is asking, if it is asking the chance of drawing a green marble second is the same as the 1st chance, then yes it is True.

B.False

C. False

D.True, 1/3*1/3 (Simplified version of 6/18*6/18) is 1/9

E. False (Although this may be true, again depending on the type of question)

F. False

3 0
1 year ago
1) 4x - 5y = -22<br> -2x + 5y = 26
taurus [48]
Point form:
(2,6)

Equation form:
X=2, y=6
7 0
3 years ago
Read 2 more answers
find the standard form of equation of a line perpendicular to 4X plus 5Y equals 40 that includes the point -10, -3
snow_tiger [21]

The equation of line in standard form is 5x - 4y = -38

<em><u>Solution:</u></em>

Given that we have to find the equation of line perpendicular to 4x + 5y = 40 that includes the point (-10, -3)

<em><u>The equation of line in slope intercept form is given as:</u></em>

y = mx + c ------ eqn 1

Where "m" is the slope of line and "c" is the y - intercept

Given equation of line is:

4x + 5y = 40

Rearranging to slope intercept form, we get

5y = -4x + 40

y = \frac{-4}{5}x + \frac{40}{5}\\\\y = \frac{-4}{5}x + 8

On comparing the above equation with eqn 1,

m = \frac{-4}{5}

We know that product of slope of line and slope of line perpendicular to given line is equal to -1

Therefore,

\frac{-4}{5} \times \text{ slope of line perpendicular to it } = -1\\\\\text{ slope of line perpendicular to it } = \frac{5}{4}

Now find the equation of line with slope 5/4 and passing through (-10, -3)

Substitute m = \frac{5}{4} and (x, y) = (-10, -3) in eqn 1

-3 = \frac{5}{4}(-10) + c\\\\-3 = \frac{-25}{2} + c\\\\c = -3 + \frac{25}{2}\\\\c = \frac{-6 + 25}{2}\\\\c = \frac{19}{2}

Substitute c = \frac{19}{2} and m = \frac{5}{4} in eqn 1

y = \frac{5}{4}x + \frac{19}{2}

The standard form of an equation is Ax + By = C

Therefore,

\frac{5}{4}x - y = -\frac{19}{2}\\\\\frac{5x - 4y}{4} = \frac{-19}{2}\\\\5x - 4y = -38

Thus the equation of line in standard form is found

4 0
3 years ago
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