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3 years ago

Simplify. 18x + 3xy + 5y −2(6xy − 2y + 4) A) 18x − 9xy + 9y − 8 B) 18x + 9xy + 9y − 8 C) 18x + 9xy − 9y + 8 D) 18x − 9xy + y − 8

Mathematics

2 answers:

Karolina [17]3 years ago

8 0

18x+3xy+5y-2(6xy-2y+4)

18x+3xy+5y-12xy+4y-8

18x-9xy+9y-8

The answer is D

vova2212 [387]3 years ago

7 0

Answer:

Option A.

Step-by-step explanation:

The given expression is

$18x+3xy+5y-2(6xy-2y+4)$

We need to find the simplified form of the given expression.

Using distributive property, we get

$18x+3xy+5y-2(6xy)-2(-2y)-2(4)$

$18x+3xy+5y-12xy+4y-8$

Combine like terms.

$18x+(3xy-12xy)+(5y+4y)-8$

$18x-9xy+9y-8$

Therefore, the correct option is A.

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Which had the greater absolute value <br> 19 or -28

nignag [31]

Answer:

-28 has the greater absolute value.

Step-by-step explanation:

19's absolute value is 19

|19|=19

but -28's absolute value is 28

|-28|=28

and 28 is greater than 19

19<28

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3 years ago

What i 12% of 32? is 32the part or the whole???

Valentin [98]

32 is the whole 12.16 is 12 percent of 32

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3 years ago

Find an expression for the function f(x) whose graph is a line passing through the points (8,-5) and (-9,2). f(x)=

kolbaska11 [484]

Answer: f(x) = - 7x/17 - 29/17

Step-by-step explanation:

The expression for the function f(x) would be represented in the slope-intercept form, y = mx + c

Where

c represents the y intercept.

m represents the slope of the line.

Slope, m =change in value of y on the vertical axis / change in value of x on the horizontal axis represent

change in the value of y = y2 - y1

Change in value of x = x2 -x1

The line passes through (8, - 5) and (- 9, 2),

y2 = 2

y1 = - 5

x2 = - 9

x1 = 8

Slope,m = ( 2 - - 5)/(- 9 - 8) = 7/- 17 =

- 7/17

To determine the intercept, we would substitute x = 8, y = - 5 and m = - 7/17 into

y = mx + c. It becomes

- 5 = - 7/17 × 8 + c

- 5 = - 56/17 + c

c = - 5 + 56/17

c = - 29/17

The equation becomes

f(x) = - 7x/17 - 29/17

8 0

3 years ago

Read 2 more answers

OK, I REALLY NEED ALL OF THIS DONE SOON!

Rudik [331]

Answer: 1. 140 times

Step-by-step explanation:

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3 years ago

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Michelin Tire Company wishes to set a minimum mileage guarantee on its new MX100 tire. Tests reveal the mean mileage is 67,900 w

Keith_Richards [23]

Answer:

The minimum guaranteed mileage is $x = 71489.55$

Step-by-step explanation:

From the question we are told that

The mean is $\mu = 67900$

The standard deviation is $\sigma = 2050$

Generally for the probability to be 4% the minimum guaranteed mileage is evaluated as

$P( X \ge x ) =1- P( \frac{X - \mu }{\sigma } < \frac{ x - 67900 }{ 2050} ) = 0.04$

$\frac{X -\mu}{\sigma } = Z (The \ standardized \ value\ of \ X )$

$P( X \ge x ) =1- P( Z$

=> $P( X \ge x ) = P( Z$

=> $z = \frac{ x - 67900 }{ 2050}$

From the z table, the critical value corresponding to 0.96 to the left of the curve is

$z = 1.751$

$1.751 = \frac{ x - 67900 }{ 2050}$

=> $x = 71489.55$

4 0

3 years ago