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3 years ago

Can someone help me?? Please

Mathematics

1 answer:

NARA [144]3 years ago

5 0

I hope its clear that answer to the first part

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A water polo team threw a pizza party after winning the championship. They needed enough pizza for 72 people. Each pizza serves

Taya2010 [7]

Answer: 204 dollars in total

Step-by-step explanation: There are 72 people, and each serving serves six people. 72 divided by 6 =12.

12x17 equals $204

Hope this helped!

7 0

2 years ago

SOMEBODY HELP MEEE!!!!

VladimirAG [237]

Solution= x=5
Alernative form= 21 x - 105= 0<span />

8 0

2 years ago

18+6=__+__=__<br> /\<br> 2 4

Arturiano [62]

Answer:

18 pluse 6 equals 14

Step-by-step explanation:

just add

3 0

1 year ago

Read 2 more answers

Prove algebraically that the straight line with equation x=2y+5 is a tangent to the circle with equation x^2+y^2=5

zmey [24]

Differentiate both sides of the equation of the circle with respect to $x$ , treating $y=y(x)$ as a function of $x$ :

$x^2+y^2=5\implies2x+2y\dfrac{\mathrm dy}{\mathrm dx}=0\implies\dfrac{\mathrm dy}{\mathrm dx}=-\dfrac xy$

This gives the slope of any line tangent to the circle at the point $(x,y)$ .

Rewriting the given line in slope-intercept form tells us its slope is

$x=2y+5\implies y=\dfrac12x-\dfrac52\implies\mathrm{slope}=\dfrac12$

In order for this line to be tangent to the circle, it must intersect the circle at the point $(x,y)$ such that

$-\dfrac xy=\dfrac12\implies y=-2x$

In the equation of the circle, we have

$x^2+(-2x)^2=5x^2=5\implies x=\pm1\implies y=\mp2$

If $x=-1$ , then $-1=2y+5\implies y=-3\neq2$ , so we omit this case.

If $x=1$ , then $1=2y+5\implies y=-2$ , as expected. Therefore $x=2y+5$ is a tangent line to the circle $x^2+y^2=5$ at the point (1, -2).

7 0

3 years ago

Read 2 more answers

Which of the the following is equivalent to 2 to the negative 3rd power? 1.-6 2.1/6 3.-8 4.1/8

Agata [3.3K]

hii the answser is 1. -6 .

7 0

2 years ago