Could someone explain number 18?

Answers

Answer 1

Answer: The process and answer are in the picture. If you’re satisfied, could you please give me a brilliant answer! :)

Answer 2

Answer: It is going to be X= -19

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If 4x+3=9x-4 then x =

Answers

4x+3=9x-4
-4x -4x
3=5x-4
+4 +4
5x=7
x= 7/5

What is 8172 divided by 9?

Answers

First we can solve 8100 by 9. Since we know 81/9=9, then 8100/9=900.
72/9=8

Now we can add them together 900+8=908.

The answer is 908.

8172/9=908 the answer is 908

A rectangular garden is 5 feet longer than twice its width. It has a sidewalk 3 feet wide on two of its sides. The area of the sidewalk is 213 square feet. Find the dimensions of the garden.

Answers

The length and width of the garden are 47 ft and 21 ft respectively.

Explanation

Suppose, the width of the garden is $x$ feet.

As the garden is 5 feet longer than twice its width, so the length will be: $(2x+5) feet$

So, the area of the garden $= length*width=x(2x+5)ft^2$

Now, the garden has a sidewalk 3 feet wide on two of its sides. That means, the length of the garden including the sidewalk $=(2x+5+3)ft =(2x+8)ft$ and the width including the sidewalk $=(x+3)ft$

Given that, the area of the sidewalk is 213 ft². So the equation will be.....

$(2x+8)(x+3)-x(2x+5)=213\n \n 2x^2+14x+24-2x^2-5x=213\n \n 9x+24=213\n \n 9x=189\n \n x=(189)/(9)=21$

So, the width of the garden is 21 feet and the length is $(2*21+5)ft= 47 ft$

If EG and HJ are parallel lines and m

Answers

The measure of ∠ JIK is 122°

What are corresponding angles?

Corresponding angles are angles that occur on the same side of the transversal line and are equal in size.

Given that, EG and HJ are parallel lines and m is transversal

∵ ∠ GFI and ∠ JIK are corresponding angles, and corresponding angles between two parallel lines are equal.

∴ m ∠ GFI = m ∠ JIK = 122°

For more references on corresponding angles, click;

brainly.com/question/1597341

#SPJ2

Answer:

m JIK = 122°

Step-by-step explanation:

HERE, L || M

So, m JIK = m GFI

( since they are corresponding angles pair )

so, m JIK = 122°

fie abc un triunghi cu masura unghiului a de 90 de grade ab este 6 cm bc=10 si ca=8 calculati;sin b; tg b; sin c; tg c; cos b; ctg b; cos c; ctg c

Answers

sinB = cosC = AC / BC = 8/10 = 4/5;
tgB = ctg C = AC/AB = 8/6 = 4/3, because we use T. Pitagora for calculating AB;
sinC = cosB = AB/ BC = 6/10 = 3/5;
tgC = ctgB = AB/ AC = 6/8 = 3/4.

When 2 lines cross, 2 pairs of vertical angles are formed. What is the sum of all 4 angles?

Answers

If 2 Lines are crossing together to make 2 pairs of Vertical Angles, the sum of all 4 Angles will always be equal to 360°.

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