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3 years ago

Subtract: (11w^3 + 15) – (-11w^3)

Mathematics

1 answer:

aleksandrvk [35]3 years ago

7 0

There his should help see below

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A circle passes through (3,-1),(-2, 4), and (6,8)

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Answer:

D = -6, E = -8 , F = 0

Step-by-step explanation:

standard form = $x^{2} + y^{2} + Dx + Ey + F = 0$

now, when circle passes through (3,-1);

⇒ $3^{2} + (-1)^{2} + D(3) + E(-1) + F = 0$

⇒ $3D - E + F + 10 = 0$ ...............( equation 1)

when circle passes through (-2,4);

⇒ $(-2)^{2} + 4^{2} + D(-2) + E(4)+ F = 0$

⇒ $-2D + 4E + F + 20 = 0$ ...............( equation 2)

when circle passes through (6,8);

⇒ $6^{2} + 8^{2} + D(6) + E(8) + F = 0$

⇒ $6D + 8E + F + 100= 0$ ................( equation 3)

by solving these 3 equations , we get;

D = -6, E = -8, F = 0

hence,

standard form = $x^{2} + y^{2} + Dx + Ey + F = 0$

= $x^{2} + y^{2} - 6x - 8y = 0$

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3 years ago

consider the equation k over x equals 12 where k is any number between 20 and 65 and X is a positive integer what are the possib

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X could be the positive integers 2, 3, 4, or 5

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Select the equivalent expression.<br> (6-4.8-7)-°<br> -2

dalvyx [7]

I think the answer is -7.8

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3 years ago

Aplumber charges a $75 flat fee for jobs lasting up to an hour and $30 for each hour of labor after the first hour. Which

tamaranim1 [39]

<h3><u>Answer</u>:- </h3>

$\longrightarrow \sf 75+ 30(h-1)$

<h3><u>Solution:-</u></h3>

<u>Given </u><u>that </u><u>:</u><u>-</u>

job last for h hours
Cost of job lasting more than 1 hour = $30
Cost for the first hour = $75

$\leadsto$ Remaining hours for which the job will last after first hour= (h-1)

<u>Therefore</u>,

Cost for subsequent hours = 30×(h-1)

= 30(h-1)

Total Cost for job = Cost for 1st hour + Cost for subsequent hours

$\quad\quad\quad\quad\quad\quad\quad\quad\boxed{\sf{= 75+30(h-1)}}$

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2 years ago

Mrs. Martinez has a bowl of candy that she passes out to trick-or-treaters. A group of 5 children dressed in costumes comes to h

Kisachek [45]

Answer:

Step-by-step explanation:

5x3=15

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2 years ago

Read 2 more answers

Subtract: (11w^3 + 15) – (-11w^3)​

Subtract: (11w^3 + 15) – (-11w^3)