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Maksim231197 [3]
3 years ago
5

Which equation is the result of subtracting the second equation from the first?

Mathematics
1 answer:
rewona [7]3 years ago
5 0

Answer:

the answer is

-x-8y=8

or, x + 8y= -8

Step-by-step explanation:

4x - 6y = 13 - (5x + 2y = 5)

or, 4x - 6y = 13

- 5x - 2y = -5

-------------------------

- x - 8y = 8

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To complete the table we must carefully observe the keypad, we will notice that each number is equivalent to 3 letters of the alphabet except the numbers 7 and 9 which have 4 letters each.

<h3>How does the keypad work?</h3>

Previously, cell phone keypad had a different layout than today. The numbers were related to the letters of the alphabet and the number key was pressed according to the letters that were related.

For example, if you wanted to type the letter B, you would have to press the number 2 key twice.

The relationship of numbers and letters was distributed as follows:

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  2. A, B and C.
  3. D, E and F.
  4. G, H and I.
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  9. W, X, Y, and Z.

According to the above, the table would be completed as follows.

Note: This question is incomplete because there is some missing information. Here is the missing information:

1. Complete this table to show the relation from letter to number.

Learn more about keypad in: brainly.com/question/1156254

3 0
2 years ago
if you wake up at 7 am and it takes you an hour and 30 minutes to get ready what time will you leave home
Elenna [48]
8:30 AM is when you leave home.
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3 years ago
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It takes 1 banana and 3 scoops of ice cream to make a banana split. If an ice cream shop scooped 42 scoops of ice cream into ban
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The answer is 14. I divided 42 by 3 and then times that answer by 1.
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One of the legs of a right triangle is twice as long as the other, and the perimeter of the triangle is 28. Find the length of t
Nutka1998 [239]

1) If we let the lengths of the legs be x and 2x, then by the Pythagorean theorem,

x+2x+\sqrt{x^{2}+(2x)^{2}}=28\\3x+x\sqrt{5}=28\\x(3+\sqrt{5})=28\\x=\frac{28}{3+\sqrt{5}} \cdot \frac{3-\sqrt{5}}{3-\sqrt{5}}=21-7\sqrt{5}

This means that the length of the hypotenuse is:

\sqrt{5}(21-7\sqrt{5})=\boxed{21\sqrt{5}-35}

2) (Diagram attached) We know that

\cos 51^{\circ}=\frac{x}{58}\\x=58 \cos 51^{\circ} \approx \boxed{36.5}  (in cm)

3) From the Pythagorean identity,

\sin^{2}\left (\arccos \frac{5}{13} \right)+\cos^{2} \left (\arccos \frac{5}{13} \right)=1\\\left(\frac{5}{13} \right)^{2}+\sin^{2} \left (\arccos \frac{5}{13} \right)=1\\\frac{25}{169}+\sin^{2} \left (\arccos \frac{5}{13} \right)=1\\\sin^{2} \left (\arccos \frac{5}{13} \right)=\frac{144}{169}\\\sin \left (\arccos \frac{5}{13} \right)=\boxed{\frac{12}{13}}

4) \frac{\pi}{6}

7 0
2 years ago
Please help A: 9 units B: 11 units C: 15 units D: 16 units
jenyasd209 [6]

Answer:

15 units

Step-by-step explanation:

Because ABC is a right triangle, you can use the Pythagorean Theorem to find side BC:

BC=\sqrt{17^2-8^2}=\sqrt{289-64}=\sqrt{225}=15

Hope this helps!

8 0
3 years ago
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