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Veseljchak [2.6K]
3 years ago
6

Can i please get help with these

Mathematics
1 answer:
Kryger [21]3 years ago
8 0

Answer:

7. x=3, 8. x=7, 9. x=15.

Step-by-step explanation:

7. If lines m and n are congruent, then angles DCF and CFE are congruent. 15x+3=18x-6. Solve for x. --> 15x+9=18x-->3x=9-->x=3

8.If line m is parallel to line n, then the corresponding angles are congruent. So, 20x+1=22x-13 Solve for x. 20x+14=22x-->14=2x-->x=7.

9. The supplementary angle of 110 is 70. Note that all of the inner angles of a triangle are equal to 180. Form an equation using the the values: (4x+8)+(2x+12)+70=180. Simplify; 6x+90=180. Solve for x: 6x+90=180-->6x=90-->x=15.

Hope this helps!

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Plz help me i need this done soon :(
77julia77 [94]

Answer:

69.08

Step-by-step explanation:

Formula: C=Pi(d)

c=22 x 3.14 = 69.08

3 0
3 years ago
Question 5 <br> show the work please
Pani-rosa [81]

Answer:

D) 27

Step-by-step explanation:

It's a rectangle so the opposite sides are congruent to each other.

<em />

<em>Long Side:</em>

6x + 6 = 42

subtract 6 from both sides:

6x = 36

divide both sides by 6:

x = 6

<em />

<em>Short Side:</em>

5y + 5 = 30

subtract 5 from both sides:

5y = 25

divide both sides by 5:

y = 5

<em />

<em>The Equation:</em>

2x + 3y

substitute in the values:

2(6) + 3(5)

do the multiplication:

12 + 15

add the values together:

27

6 0
3 years ago
Read 2 more answers
PLEASE HELP!
fenix001 [56]

Answer:

No

Step-by-step explanation:

No because (1,2) falls on the line, and the line is a dotted line, which means that any point on the line is not a solution to the inequality.

5 0
3 years ago
Mark uses 19 gallons of gas while traveling 399
Ket [755]

Answer:

189

Step-by-step explanation:

If mark uses 19 gallons to travel 399 miles, that means he was able to travel 21 miles per gallon.

We get this by taking 399 divided by 19.

So if mark travels on 9 gallons of gas and goes 21 miles per gallon, he will have traveled 189 miles.

We get this by taking 21 times 9

4 0
3 years ago
Pls helppppppppppppp❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️
yarga [219]

9514 1404 393

Answer:

  C.  (1, -1)

Step-by-step explanation:

Dilation by a factor of 1/3 multiplies each coordinate value by 1/3.

  (x, y) ⇒ (x/3, y/3)

  K(3, -3) ⇒ K'(3/3, -3/3) = K'(1, -1)

8 0
3 years ago
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