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2 years ago

Select the correct way to write: Nine less than twice a number. 9n - 2 n - 9 9-n 2n - 9

Mathematics

1 answer:

navik [9.2K]2 years ago

7 0

2n-9 Bc math yep
Huhhhhhh

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Which statement about this system of equations is true? A. The system has no solution. B. The system has a unique solution at (0

SCORPION-xisa [38]

Answer:

A. The system has no solutions

Step-by-step explanation:

Step 1: Check to see if the 2 lines share 1 slope

slope of blue line = $\frac{y2-y1}{x2-x1} =\frac{7-6}{3-0}=\frac{1}{3}$

slope of red line = $\frac{y2-y1}{x2-x1} =\frac{-3-(-4)}{3-0}=\frac{1}{3}$

Step 2: Realize that lines with the same slope never touch

We know lines with the same slope are parallel to each other so they won't collide

Step 3: Know what the question is asking you

When they ask for solutions to the system of equations they are asking you to find out where they intersect

Step 4: Find answer

Because we know this is a parallel line they will never intersect causing this system to never have an answer or solution

Therefore the answer is A. The system has no solutions

8 0

3 years ago

Read 2 more answers

Write the equation – 2x2 + 1 = 5x in standard form

oksian1 [2.3K]

Answer: 5 x = − 3

Step-by-step explanation: brainlest please

6 0

3 years ago

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I need help! I don't know how to get the answer or what it is. Can anyone help me it's for a test and I'm on my last attempt?

Greeley [361]

Answer:

See explanation

Step-by-step explanation:

(4)

Using the sine ratio in the right triangle

sinΘ = $\frac{opposite}{hypotenuse}$ = $\frac{7}{9}$ , thus

Θ = $sin^{-1}$ ( $\frac{7}{9}$ ) ≈ 51.1°

(5)

Using the tangent ratio in the right triangle

tanΘ = $\frac{opposite}{adjacent}$ = $\frac{4}{5}$ , thus

Θ = $tan^{-1}$ ( $\frac{4}{5}$ ) ≈ 38.7°

7 0

2 years ago

Simplify: 0.9(2b-1)-0.5b+1

Nutka1998 [239]

Answer:

Step-by-step explanation:

0.9*2b = 1.8b

0.9*-1 = -0.9

So far we have 1.8b-0.9. It can't be simplified further.

Then, we add the 2nd part, -0.5b+1.

We have:

1.8b-0.9-0.5b+1. Next we combine like terms.

1.8b-0.5b = 1.3b.

-0.9+1 = 0.1

Then we put it together.

1.3b+0.1 is our answer.

Hope this helped! Have a nice day :D

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2 years ago

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assume that a 150-pound person starts a diet loses 2 pounds per week for 15 weeks . write an equation modeling this situation

boyakko [2]

Weight = w
no. of weeks = n

w = 150 - 2n

8 0

3 years ago

Select the correct way to write: Nine less than twice a number. 9n - 2 n - 9 9-n 2n - 9​

Select the correct way to write: Nine less than twice a number. 9n - 2 n - 9 9-n 2n - 9