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3 years ago

What is the value of x if 5x + 45 = 35? Select one: 10 -2 -10 2

Mathematics

1 answer:

andrew-mc [135]3 years ago

4 0

Answer:

x= -2

Step-by-step explanation:

Simplifying 5x + 45 = 35 Reorder the terms: 45 + 5x = 35 Solving 45 + 5x = 35 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-45' to each side of the equation. 45 + -45 + 5x = 35 + -45 Combine like terms: 45 + -45 = 0 0 + 5x = 35 + -45 5x = 35 + -45 Combine like terms: 35 + -45 = -10 5x = -10 Divide each side by '5'. x = -2 Simplifying x = -2

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4 years ago

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3 years ago

Someone please help me

MariettaO [177]

Hey there! I'm happy to help!

Let's think of this as the equation y=mx+b, where m represents the slope and b equals the y-intercept.

The y-intercept is where the line hits the y-axis. As we can see, it hits it at the y-value of zero. Therefore, our equation is just left as y=mx now because b is 0.

We want to find the slope now. This is known as the rise/run, or the y/x. This is basically saying how far up it goes for every one step to the right. If we go to the x-value of one, we see that the y-value is at a little bit less than one. We want to keep on moving to the right until the y-value is at a nice integer value (number without fractions).

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3 years ago

Two side lengths of a triangle are given as 9 cm and 5 cm. What could be the length of its third side? 3cm

disa [49]

The length of the third side could be 5 cm ⇒ 3rd answer

Step-by-step explanation:

There is a fact in any triangle, that the sum of the lengths of the

smallest two sides of a triangle must be greater then the length of

the largest side

The sum of smallest 2 sides > the 3rd side

So to solve the problem

1. Chose the third side from the answer

2. Add the lengths of the two smallest side

3. Compare between the sum and the 3rd side

∵ The length of the two sides of a triangle are 9 cm and 5 cm

- If the third side is 3 cm

∵ 3 and 5 are the smallest side

∵ 3 + 5 = 8

∵ 8 < 9

∴ The sum of the smallest two sides < the 3rd side

∴ 3 cm can not be the length of the 3rd side

- If the third side is 4 cm

∵ 4 and 5 are the smallest side

∵ 4 + 5 = 9

∵ 9 = 9

∴ The sum of the smallest two sides = the 3rd side

∴ 4 cm can not be the length of the 3rd side

- If the third side is 5 cm

∵ 5 and 5 are the smallest side

∵ 5 + 5 = 10

∵ 10 > 9

∴ The sum of the smallest two sides > the 3rd side

∴ 5 cm can be the length of the 3rd side

- If the third side is 14 cm

∵ 5 and 9 are the smallest side

∵ 5 + 9 = 14

∵ 14 = 14

∴ The sum of the smallest two sides = the 3rd side

∴ 14 cm can not be the length of the 3rd side

The length of the third side could be 5 cm

Learn more:

You can learn more about triangles in brainly.com/question/4098846

#LearnwithBrainly

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