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Ivenika [448]
3 years ago
8

3x +2 = 9x + 20 for x

Mathematics
2 answers:
Semmy [17]3 years ago
7 0

Answer:

Use a calculator solved :)))

Step-by-step explanation:

VARVARA [1.3K]3 years ago
4 0

Answer:

x=-3

Step-by-step explanation:

3x+2=9x+20

3x-9x=20-2

-6x=18

X=-3

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What is the missing numerator? blank over five plus eighteen over twenty equals thirty over twenty 8 5 3 2
Oliga [24]

Given:

\dfrac{?}{5}+\dfrac{18}{20}=\dfrac{30}{20}

To find:

The missing value.

Solution:

Let x be the missing value.

We have,

\dfrac{x}{5}+\dfrac{18}{20}=\dfrac{30}{20}

\dfrac{x}{5}+\dfrac{9}{10}=\dfrac{3}{2}

Subtract \dfrac{9}{10} from both sides.

\dfrac{x}{5}=\dfrac{3}{2}-\dfrac{9}{10}

\dfrac{x}{5}=\dfrac{15-9}{10}

\dfrac{x}{5}=\dfrac{6}{10}

\dfrac{x}{5}=\dfrac{3}{5}

Multiplying both sides by 5, we get

x=3

So, the missing value is 3.

Therefore, the correct option is C.

8 0
3 years ago
The sum of two numbers is 20.The difference is 4 what are the numbers?
Alex17521 [72]
The sum of two numbers is 20 and their difference is 4. Which is the greater of the two numbers? The answer is 12.
4 0
3 years ago
A 13.5-meter ladder leans against a brick wall and the ladder makes a 75∘ with the wall. The distance d the ladder goes up the w
Alex73 [517]

Answer:

3.5 m

Step-by-step explanation:

Use Pythagorean theorem to find the distance (d) the distance goes up the wall = adjacent to the angle 75° that is formed with the wall.

Length of ladder = the hypothenuse = 13.5 m

Thus, we would use:

Cos75 = adjacent/hypothenuse

Cos 75 = d/13.5

Multiply both sides by 13.5

13.5*cos(75) = d

13.5*0.2588 = d

3.4938 = d

d ≈ 3.5 m (nearest tenth)

3 0
3 years ago
4y-70=12y+2<br><br> Solve????
Lady_Fox [76]
Simplifying <span>4y + -70 = 12y + 2
</span>
Add -12y to each side of the equation. -70 + 4y + -12y = 2 + 12y + -12y 

<span>Add 70 to each side of the equation. -70 + 70 + -8y = 2 + 70
</span>
Divide each side by -8.
<span>
</span>So y = -9 is your answer.

Hope I Helped!!!
6 0
3 years ago
J'ai un exercice de maths pour demain merci de commenter au plus vite
kari74 [83]
Oui je peux the aider
8 0
3 years ago
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