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3 years ago

Someone help me please!

Mathematics

1 answer:

malfutka [58]3 years ago

5 0

Remember, all inside angles in a triangle add up to 180°

So:

3x+5x+7+x+2=180

Combine like terms

9x+9=180

Subtract 9 from both sides

180-9=171

9x=171

Divide by 9 on both sides

171/9=19

x=19

Plug it into all the angle measures.

Angle X: x+2, 9+2=11, Angle X=11°

Angle Y: 5x+7, 5(9)+7=52, Angle Y=52°

Angle Z: 3x, 3(9)=27, Angle Z=27°

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The sum of 18 +45 is a multiple of which sum?

forsale [732]

Answer:

B. (2 + 5).

Step-by-step explanation:

18 + 45 = 63

The prime factors of 63 = 3*3*7

So 63 is a multiple of 7.

The answer is (2 + 5) (=7).

6 0

3 years ago

What equation can I use to find the side of a cube whose area is 729?

Tom [10]

#1 There is no area of a cube. There is only a volume.
#2 The formula is $V = s^{3}$ where s is the side.

Substitute 729 in V since that is the volume.
$729 = s^{3}$

Take the cube root and you will get 9.

So the formula is $V = s^{3}$ and the side is 9.

8 0

3 years ago

What is the equation of the line that passes through the point (-6, -2) and has a

Westkost [7]

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Step-by-step explanation:

5 0

2 years ago

Read 2 more answers

10 POINTS <br><br> Could someone please answer these questions please

Natasha_Volkova [10]

Answer:

dont lie, thats only 5 points

5 0

3 years ago

QUESTION 1 (ONLY ANSWER FOR ALL QUESTIONS) a) 2x/3 =8 (what is x=?) b)3x/2 =6 (what is x=?) QUESTION 2 a)x/3 -2 =6 (what is x=?)

Alex777 [14]

Answer:

1 (a) x = 12

1 (b) x = 4

2 (a) x = 24

2 (b) x = 20

3 (a) x = 4

3 (b) x = 17.5

Step-by-step explanation:

1 (a)

2x/3 = 8

2x = 8 × 3

2x = 24

x = 24 ÷ 2

x = 12

1 (b)

3x/2 = 6

3x = 6 × 2

3x = 12

x = 12 ÷ 3

x = 4

2 (a)

x/3 - 2 = 6

x/3 = 6 + 2

x/3 = 8

x = 8 × 3

x = 24

2 (b)

x/5 + 1 = 5

x/5 = 5 - 1

x/5 = 4

x = 4 × 5

x = 20

3 (a)

5x/2 + 1 = 11

5x/2 = 11 - 1

5x/2 = 10

5x = 10 × 2

5x = 20

x = 20 ÷ 5

x = 4

3 (b)

2x/7 - 3 = 2

2x/7 = 2 + 3

2x/7 = 5

2x = 5 × 7

2x = 35

x = 35 ÷ 2

x = 17.5

5 0

3 years ago