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3 years ago

HELP ASAP i’ll give thanks and brainliest!!

Mathematics

1 answer:

sergiy2304 [10]3 years ago

6 0

i have asked to someone I'll take some time wait

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9. Identify the slope and y-intercept of the<br> equation x - 2y = 2

makkiz [27]

1/2x is the slope of the equation x-2=2

6 0

4 years ago

Read 2 more answers

Measurement of a circle<br><br> (Giving brainliest to correct answer)

xxMikexx [17]

Answer:

C. $9\pi$

Step-by-step explanation:

VU is tangent $\odot W$ at point U and WU is radius.

$\therefore WU \perp VU$

$\implies m\angle VUW=90\degree$

$\therefore \triangle VUW$ is right angle triangle.

WZ = WU = x - 1 (Radii of same circle)

WV = x - 1 + 2 = x + 1

By Pythagoras Theorem:

$WU^2 + VU^2 = WV^2$

$(x-1)^2 +(2x-4) ^2 = (x+1)^2$

$x^2 -2x +1+ 4x^2 -16x + 16=x^2 +2x +1$

$4x^2 -20x + 16=0$

$x^2 -5x + 4=0$

Equating it with

$ax^2 +bx +c=0$

We find:

a = 1, b = - 5, c = 4

$b^2 - 4ac =(-5)^2 - 4(1)(4)= 25-16 =9$

$x=\frac{-b\pm \sqrt{b^2 - 4ac}}{2a}$

$x=\frac{-(-5)\pm \sqrt{9}}{2\times 1}$

$x=\frac{5\pm 3}{2}$

$x=\frac{5+3}{2}, \: x =\frac{5-3}{2}$

$x=\frac{8}{2}, \: x =\frac{2}{2}$

$x=4, \: x =1$

When x = 4, radius (r) = 4 - 1 = 3

When x = 1, radius (r) = 1 - 1 = 0, which is not possible.

Area of $\odot W$

$=\pi r^2$

$=\pi (3)^2$

$=9\pi$

4 0

3 years ago

On Saturday Stella worked for two hours helping her mother in the house. she spent 1/3 of her time doing laundry, 1/4 of a time

raketka [301]

$\bf \stackrel{\textit{total hours time}}{2}-\cfrac{1}{3}-\cfrac{1}{4}\impliedby \textit{we'll use an LCD of \underline{12}}
\\\\\\
2-\cfrac{1}{3}-\cfrac{1}{4}\implies \cfrac{(12\cdot 2)~-~(4\cdot 1)~-~(3\cdot 1)}{12}\implies \cfrac{24-4-3}{12}\implies \cfrac{17}{12}
\\\\\\
\textit{12 goes into 17 \underline{1 time} and it has a \underline{remainder} of 5 }\implies 1\frac{5}{12}$

which is one hour and 25 minutes.

7 0

4 years ago

A biker’s speed is 1.5 times faster than a walker’s speed. They start moving simultaneously in the same direction from the same

slavikrds [6]

Answer:

Biker: 25

Walker: 16.67

7 0

3 years ago

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Solve -9z >/= -72 CHECK YOUR ANSWER

777dan777 [17]

Answer:

z ≤ 8

Step-by-step explanation:

-9z ≥ -72

Isolate the variable, z. Treat the ≥ as a equal sign, what you do to one side, you do to the other. Divide -9 from both sides. Note that when you divide a negative number, you will flip the sign:

(-9z)/-9 ≥ (-72)/-9

z ≤ (-72)/(-9)

z ≤ 8

z ≤ 8 is your answer.

8 0

3 years ago

HELP ASAP *i’ll give thanks and brainliest!!*

HELP ASAP i’ll give thanks and brainliest!!