Can someone please help me use a protractor on this question since I don’t have one?

Mathematics

1 answer:

jekas [21]3 years ago

6 0

Answer:

If you don't have a protractor handy, you can determine the size of an angle using the basic geometric principles of triangles. You'll need a scientific calculator to solve the equations. Most smartphones are equipped with them, but you can also download a free app or access a free calculator online.

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The sum of the digits of a two-digit number is 12. The number with the digits reversed is 15 times the original tens' digit. Fin

nika2105 [10]

$a-digit\ of\ tens\\b-digit\ of\ ones\\10a+b-the\ number\\10b+a-the\ number\ with\ reversed\ digits\\\\\left\{\begin{array}{ccc}a+b=12&\to b=12-a\\10b+a=15(10a+b)\end{array}\right\\\\\text{Substitute}\\\\10(12-a)+a=15(10a+12-a)\\10(12-a)+a=15(9a+12)\qquad\text{use distributive property}\\(10)(12)+(10)(-a)+a=(15)(9a)+(15)(12)\\120-10a+a=135a+180\\120-9a=135a+180\qquad\text{subtract 120 from both sides}\\-9a=135a+60\qquad\text{subtract 135a from both sides}\\-144a=60\qquad\text{divide both sides by (-144)}\\\\a=-\dfrac{60}{144}$

a is negative and it's not a digit.

<h3>Conclusion: Such a number does not exist.</h3>

8 0

3 years ago

A book shows an enlarged photo of a carpenter bee. A carpenter bee is about 6×10^-3 m long. The photo is 13.5 cm long. About how

Novay_Z [31]

<span> A </span>ratio<span> compares values. A </span>ratio<span> says how much of one thing there is compared to another thing. We do as follows:

length of photo/ length of a carpenter bee = ratio of the two
13.5 / 6x10^-3 = 2250

Therefore, the photo is 2250 longer than the carpenter bee.</span>

5 0

4 years ago

A square pyramid has a base edge of 1 meter. the height of each triangular face is 1 meter. what is the pyramid's surface area?

Arada [10]

Area of sq.=1x1=1
Area of 4triangle=4(0.5x1x1)=2
Area of pyramid =1+2=3

6 0

3 years ago

Help! Help! Anyone! Please!

nika2105 [10]

Answer:

86=8h

Step-by-step explanation: