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3 years ago

Plzzzz Help

Mathematics

1 answer:

Art [367]3 years ago

5 0

Answer:

180

Step-by-step explanation:

Given the cost (in dollars) of buying x pounds of a party product is given by the function

C(x) = 10x + 300.

Suppose, for budgetary reasons; you can't spend more than $2100 on this product. You can spend less, but you have to buy at least 50 pounds.

To get the domain of the function, substitute C(x) =2100 and find x

2100 = 10x + 300

10x = 2100 - 300

10x = 1800

x = 1800/10

x = 180

Hence the domain of the function is 180

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4x + 3 = -5x -7 cual es el<br> Valor de x ?

yan [13]

4x + 3 = -5x - 7 Add 5x to both sides.
4x + 3 + 5x = -5x - 7 + 5x
9x + 3 = -7 Subtract 3 from both sides.
9x + 3 - 3 = -7 - 3
9x = -10 Divide both sides by 9
9x / 9 = -10 / 9
Your answer can either be 1.11111... or it would be x = -10/9

7 0

4 years ago

Use an algebraic equation to find the measure of each angle that is represented in terms of x.

yawa3891 [41]

Answer:

12x-17=139

8x+35=139

Step-by-step explanation:

The angles are vertical angles which means they are equal

12x-17 = 8x+35

Subtract 8x from each side

12x -8x-17 = 8x-8x+35

4x -17 = 35

Add 17 to each side

4x - 17 +17 = 35+17

4x = 52

Divide each side by 4

4x/4 = 52/4

x =13

12x-17 = 12(13) -17 = 156-17 =139

8x+35 =8(13) +35=104+35=139

4 0

3 years ago

15. What must be added to (P–3xº + 4.x –13) to obtain a polynomial which is exactly divisible by

Tatiana [17]

Answer:

I do it for the point haha

Step-by-step explanation:

you silly elf he

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3 years ago

In San Diego the average cost of gas is $4.15 per gallon. If a car has a fuel efficiency of 24 miles per gallon and the owner of

KIM [24]

Answer:

$25.94

Step-by-step explanation:

150 ÷ 24 = 6.25

6.25 × 4.15 = 25.9375

25.94

3 0

3 years ago

Which equations have no real solution but have two complex solutions? A 3x>2-5=-8 b 2x>2=6x-5 c 12x=9x>2 +4 d -x>2 -

wolverine [178]

Answer:

$3x^2-5x=-8$

$2x^2=6x-5$

$-x^2-10x=34$

Step-by-step explanation:

The equations are:

$3x^2-5x=-8$

$2x^2=6x-5$

$12x=9x^2+4$

$-x^2-10x=34$

(a) $3x^2-5x=-8$

Add 8 to both sides

$3x^2 - 5x + 8 =0$

To do this, we simply calculate the discriminant (d) using:

$d =b^2 - 4ac$

If $d < 0$

Then it has complex roots

Where: $a = 3; b = -5; c = 8$

$d = (-5)^2 - 4 * 3 * 8$

$d = 25 - 96$

$d = -71$

$-71 < 0$ --- complex root

(b) $2x^2=6x-5$

Equate to 0

$2x^2 - 6x + 5 = 0$

$d =b^2 - 4ac$

$d = (-6)^2 - 4 * 2 * 5$

$d = 36 - 40$

$d =-4$

$-4 < 0$ --- complex root

(c) $12x=9x^2+4$

Equate to 0

$9x^2 - 12x + 4 = 0$

$d =b^2 - 4ac$

$d = (-12)^2 - 4 * 9 * 4$

$d = 144 - 144$

$d = 0$ ---- real roots

(d) $-x^2-10x=34$

Equate to 0

$-x^2 - 10x - 34 = 0$

$d =b^2 - 4ac$

$d = (-10)^2 - 4 * (-1) * (-34)$

$d = 100 - 136$

$d = - 36$

$-36 < 0$ ---- complex root

6 0

3 years ago