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3 years ago

Need help, please

Mathematics

1 answer:

madam [21]3 years ago

7 0

Answer:

19.5 hrs

Step-by-step explanation:

30 minutes meeting for every 3 hours of work

10 minutes meeting for every 1 hour of work

15 minutes meeting of every 1 1/2 hour of work

3 hours meeting for every 18 hours of work

She spent 19 1/2 hours

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<img src="https://tex.z-dn.net/?f=%5Csqrt%7B91%20-%2040%5Csqrt%7B3%7D%20%7D" id="TexFormula1" title="\sqrt{91 - 40\sqrt{3} }" al

lianna [129]

Answer:

$5\sqrt{3} - 4$

Step-by-step explanation:

$\sqrt{(4-5\sqrt{3} )^{2} }$

$5\sqrt{3} - 4$

3 0

3 years ago

Find value of x and y

marshall27 [118]

Answer:

x = 17 $\sqrt{3}$ , y = 34

Step-by-step explanation:

Since the triangle is right use trig ratios to find x and y

note exact values sin30° = $\frac{1}{2}$ , tan30° = $\frac{1}{\sqrt{3} }$

sin30° = $\frac{opposite}{hypotenuse}$ = $\frac{17}{y}$

multiply both sides by y

y sin30° = 17 ( divide both sides by sin30° )

y = $\frac{17}{\frac{1}{2} }$ = 34

tan30° = $\frac{opposite}{adjacent}$ = $\frac{17}{x}$

multiply both sides by x

x tan30° = 17 ( divide both sides by tan30° )

x = $\frac{17}{\frac{1}{\sqrt{3} } }$ = 17 $\sqrt{3}$

8 0

3 years ago

If x = 8 units, y = 3 units, and h = 9 units, find the area of the trapezoid shown above using decomposition.

lys-0071 [83]

Answer:

Step-by-step explanation:

because you do 8x9 and its 72

4 0

3 years ago

15 POINTS<br><br> Find x if P=(3x+5) and Q=(8x-12)

wlad13 [49]

the answer for this question is p=5/3 ,(q)=3/2

7 0

3 years ago

When an octave is divided into twelve equal steps, a chromatic scale results. The ratios between sucessive notes is

alukav5142 [94]

Answer: They would be A.

Step-by-step explanation: Don't take my word for it 100%

7 0

3 years ago