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2 years ago

Estimate each percent: 50% of 39

Mathematics

2 answers:

vova2212 [387]2 years ago

8 0

Answer:

19.5

Step-by-step explanation:

39 x 0.50 = 19.5

likoan [24]2 years ago

6 0

For a future reference, for these types of questions you would divide the percentage by 100. So in this case would be 0.50 then you would take the whole number which is the 39, and you would multiply it by .50 so your final answer is 19.5

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Precal : Note: Triangle may not be drawn to scale. Suppose a = 3 and A = 15 degrees

drek231 [11]

Given:

In a right triangle at B,

$\begin{gathered} a=3 \\ A=15^{\circ} \end{gathered}$

To find:

The length of the sides b and c and angle B.

Explanation:

Using the trigonometric ratio,

$\begin{gathered} sinA=\frac{a}{c} \\ \sin15^{\circ}=\frac{3}{c} \\ c=\frac{3}{\sin15^{\circ}} \\ c=11.59 \\ c\approx11.6 \end{gathered}$

Using the trigonometric ratio,

$\begin{gathered} \tan A=\frac{a}{b} \\ \tan15^{\circ}=\frac{3}{b} \\ b=\frac{3}{\tan15^{\circ}} \\ b=11.19 \\ b\approx11.2 \end{gathered}$

Using the angle sum property,

The angle B becomes,

$\begin{gathered} 90+15+B=180 \\ B=180-90-15 \\ B=75^{\circ} \end{gathered}$

Final answer:

The values are,

$\begin{gathered} b=11.2 \\ c=11.6 \\ B=75^{\circ} \end{gathered}$

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1 year ago

What do I’m supposed to do ?

vlabodo [156]

Answer: okay so first solve for x which is going to be x=10

Step-by-step explanation:

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2 years ago

Read 2 more answers

PLEASE HELP ME !!!! WILL GIVE BRAINLIEST TO WHOEVER ANSWERS CORRECTLY

Margarita [4]

Answer:

(8x + 1)° + ( 4x+11)° = 180° (linear pair )

8x +1 + 4x +11 = 180

8x + 4x + 1 + 11 = 180

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x= 168/12

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3 years ago

I need hlep its do to day

Taya2010 [7]

Answer:

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Step-by-step explanation:

distribute -4 on the left side of the equation first, then distribute 2 on the right side of the equation to get:

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12x - 4 = 2x - 16

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10x - 4 = -16

add 4 to each side to get:

10x = -12

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2 years ago

Rewrite using a single positive exponent.<br> 78<br> 73

vivado [14]

Hey! I don’t know if this is what you mean.. but I tried to understand it.

78^1
73^1

Have a good day :)

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2 years ago