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3 years ago

Joelle would like to tip her hairdresser 20%. If her haircut was $38.00, which expression should she use to find the tip amount

Mathematics

2 answers:

givi [52]3 years ago

8 0

B. (0.2)(38) is the correct answer

Citrus2011 [14]3 years ago

6 0

Answer:

the expression is (0.2)(38)

Step-by-step explanation:

Joelle would like to tip her hairdresser 20%.

Haricut bill was $38.00.

To find the tip amount, we multiply the tip percentage by the bill amount

tip percentage is 20%. To remove percentage we divide by 100

$\frac{20}{100} =0.2$

Tip amount = $0.2 \ times \ 38$

So the expression is (0.2)(38)

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Which two points or 4 units from K? a) I and M b) J and L c) H and N d) G and O

telo118 [61]

Answer: the correct option is

(d) G and O.

Step-by-step explanation: We are given to find the two points that are at a distance of 4 units from point K.

We have

Distance of point J and L point K is given by

$d=-3-(-4)=-2-(-3)=1~\textup{units}.$

Distance of point I and M point K is given by

$d=-3-(-5)=-1-(-3)=2~\textup{units}.$

Distance of point H and N point K is given by

$d=-3-(-6)=0-(-3)=3~\textup{units}.$

Distance of point G and O point K is given by

$d=-3-(-7)=1-(-3)=4~\textup{units}.$

Thus, the required point are G and O.

Option (d) is CORRECT.

5 0

4 years ago

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What's is x - 4 = - 7

shtirl [24]

X would be equal to -3
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7 0

3 years ago

Plot the point whose polar coordinates are given. Then find the Cartesian coordinates of the point. (a) (5, 3π/2) (x, y) = (b) (

Vlad1618 [11]

Answer:

$A)(5,\frac{3\pi}{2})=(0,-5)\:B)(\frac{3}{2} , \frac{\pi}{4} ) \Rightarrow (\frac{3\sqrt{2}}{4} ,\frac{3\sqrt{2}}{4} )\:C)(-1,\frac{\pi}{6})= (\frac{\sqrt{3}}{2},\frac{1}{2})$

Step-by-step explanation:

1) Check the Polar Coordinates on the graph.

2) A polar coordinate is given in $(r,\theta)$ Let's transform each polar coordinate into Cartesian one. Considering:

$x=rcos\theta\\y=rsin\theta\\$

$A) (5,\frac{3\pi}{2})\\cos(\theta)=\frac{x}{5}\\cos(\frac{3\pi}{2})=\frac{x}{5}\:Cross\: Multiplying\\x=5 cos(\frac{3\pi}{2})\\x =5 cos(0)\:x=0\\sin(\frac{3\pi}{2})=\frac{y}{5}\\y=5sin(-1)\\y=-5\\(0,-5)$

B) (b) (3/2 , π/4)

$B) (\frac{3}{2},\frac{\pi}{4})\\cos(\theta)=\frac{x}{\frac{3}{2}}\\\frac{3}{2}cos(\frac{\pi}{4})=x\:Cross\: Multiplying\\x=\frac{3}{2}*\frac{\sqrt{2}}{2}\\x =\frac{3\sqrt{2}}{4} \approx 1.06$