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3 years ago

Solve the system using the substitution method.

Mathematics

1 answer:

jeka57 [31]3 years ago

6 0

Answer:

(3,1)

Step-by-step explanation:

work is in picture

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No Spam. I will mark Brainliest, if you get it right. A tank's length is 4 feet longer than its width. The height is 2 feet more

dmitriy555 [2]

Answer: 3

Step-by-step explanation:

Let say x the width of the tank,

x+4 its length,

x+2 its height

$Volume=105=x(x+4)(x+2)\\\\P(x)=x^3+6x^2+8x-105=0\\\\105=3*5*7\\\\P(1)\neq 0\\P(-1)\neq 0\\P(3)=0\\\\\begin{array}{|c|cccc|}&x^3&x^2&x&1\\&1&6&8&-105\\x=3&&3&27&105\\----&--&--&--&--\\&1&9&35&0\\\end{array}\\\\\\P(x)=x^3+6x^2+8x-105=(x-3)(x^2+9x+35)\\And \ x^2+9x+35\ is\ not \ factorizable\ (\Delat=9^2-4*35 < 0)\\$

<u>width=3</u>

length=3+4=7

height=3+2=5

4 0

3 years ago

Find the volume of the pyramid below.

Roman55 [17]

Answer:

≈283.33333

Step-by-step explanation:

V=lwh/3

10 · 10 · 8.5 /3

3 0

3 years ago

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Solve the inequality:<br>(x+2)/(x^2-3x)>0

makkiz [27]

Answer:

The inequality is equivalent to x(x+2)(x−3)>0 , with the additional conditions that x≠0 and x≠3 .

Since x(x+2)(x−3) only changes signs when crossing −2 , 0 and 3 , from the fact that the evaluating the polynomial at 4 yields 24 , we see that the polynomial is

positive over (3,∞)

negative over (0,3)

positive over (−2,0)

negative over (−∞,−2)

Thus the solution set for your inequality is (−2,0)∪(3,∞) .

Step-by-step explanation:

hi Rakesh here is your answer :)

#shadow

7 0

3 years ago

Tell whether the angle is adjacent or vertical. Then find the value of x

Yuki888 [10]

These angles are adjacent angels.
adjacent angels- have a common side and the same vertex.
(pictured below)

To solve this we set the sum of both angles equal to 180°. We do this because they are two adjacent angles on a straight line. The measure of a straight lines angle is 180°.

180= 5x + (x+96)
180=6x+96
84= 6x
x=14

any questions?

6 0

3 years ago

Explain how to prepare, use and review a budget.

stich3 [128]

Answer:

Use a spreadsheet.

Step-by-step explanation:

If you mean a household budget you could use a spreadsheet.

The columns would be months and the rows would be items of expenditure and income.

You use formulae ( provided by the spreadsheet) to do additions, subtractions and so on.

7 0

2 years ago

Read 2 more answers