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2 years ago

PLS HELP I ONLY HAVE 30 MINS

Mathematics

1 answer:

Andrews [41]2 years ago

8 0

Answer:

C. It is not proportional because it is not a straight line.

Step-by-step explanation:

You can check to see if it is a straight line by setting up a table and ensuring that the values increase by the same amount every ordered pair.

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A cuboid with a volume of 924cm^3 has dimensions 4cm, (x+1)cm and (x+11). Show clearly that x^2+12x-220=0 solve the equation by

garik1379 [7]

Answer:

$x^2+12x-220=0$ -- Proved

$x = 10\ \ \ x = -22$

Step-by-step explanation:

Given

$Volume = 924cm^3$

$Dimension: 4cm; (x+1)cm; (x+11)cm$

Required

Show that $x^2+12x-220=0$

The volume is calculated as:

$4 * (x + 1) * (x + 11) = 924$

Open the brackets

$(4x + 4) * (x + 11) = 924$

$4x^2 + 44x + 4x + 44 = 924$

$4x^2 + 48x+ 44 = 924$

Collect Like Terms

$4x^2 + 48x+ 44 - 924=0$

$4x^2 + 48x -880=0$

Divide through by 4

$\frac{4x^2}{4} + \frac{48x}{4} -\frac{880}{4}=0$

$x^2+12x-220=0$

Solving further:

Expand the expression

$x^2 + 22x - 10x - 220 = 0$

Factorize:

$x(x + 22) - 10(x + 22) = 0$

$(x - 10)(x + 22) = 0$

Split:

$x - 10 = 0;\ \ \ x + 22 = 0$

$x = 10\ \ \ x = -22$

5 0

2 years ago

please help please help please help Suppose Karen $1000 that she invests in an account that pays 3% interest compounded annually

mojhsa [17]

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3 years ago

Jose has a family of 4. Is it more reasonable for Jose to purchase 3 pounds of potatoes for his family’s meal tonight or 13 poun

Angelina_Jolie [31]

I think 13 pounds for extras and all not sure just my thought :)

5 0

3 years ago

Find the value of x that makes m ∥ n .

Alla [95]

Answer:

Step-by-step explanation:

(2x+15)=135 They're corresponding angles so they equal/congruent

-15 -15 Subtract 15 on both sides since you're looking for x

2x = 120 Bring down the remains and subtract 135 from 15

2 2 Add 2 on both sides

x= 60 Divide.

3 0

2 years ago

Please help.. I’m stuck on this question

s2008m [1.1K]

Answer: The answer is 1

Step-by-step explanation: The distance between -7 and -3 is 4 then half the distance in between -7 and -3 is going to be -5 because we just clarified that the distance between -7 and -3 is 4 so we did 4/2 and got 2 so we can figure out whats the distance between each point. Now that we figured that out we can determine what value the blue dot is if the value between each point is 2 then we can make out what the rest of the points on the line. If we from -3 to the blue point that would be 1.

4 0

3 years ago