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AleksandrR [38]
3 years ago
11

(5x2 + 2x + 1) + (6x2 − 3x + 9) is equivalent to expression

Mathematics
1 answer:
Darina [25.2K]3 years ago
3 0

Answer:

11x² - x + 10

Step-by-step explanation:

Given

(5x² + 2x + 1) + (6x² - 3x + 9 ) ← remove both parenthesis

= 5x² + 2x + 1 + 6x² - 3x + 9 ← collect like terms

= 11x² - x + 10

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Step-by-step explanation:

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6 0
3 years ago
Seven more than a number, x, is at most 20
Verdich [7]

Answer:

x+7 ≤ 20

Just take it step by step:

seven more than a number is a number plus 7 (x+7)- keep in mind we dont know what the number is so we use x to represent the number.

it then says it's equal to at most 20.

This means that it cant equal anything above 20 since 20 is the max. Therefore, it must be 20 and below that x+7 equals

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Step-by-step explanation:

3 0
3 years ago
The question is in the picture
Brut [27]

Answer: y = 4x-1

Step-by-step explanation:

1) Choose two points for the later equation.

For this example, I will use (-1,-5) and (2,7)

2) Place it in a rise/run equation. (y/x)

\frac{y2-y1}{x2-x1} \\\\\frac{7-(-5)}{2-(-1)} \\\\\frac{12}{3} \\\\4

The Slope is 4.

3) Find the y-intercept

So, we can place a given point and slope into a y=mx+b function.

y=4x+b

Next, we can substitute the point and slope.

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4) Finally, place it all in slope intercept form

y = 4x-1

5 0
1 year ago
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iVinArrow [24]

Answer:

When both equations have different slopes than regardless of the y-intercept they'll intersect for certain, therefore it has exactly one solution

Step-by-step explanation:

5 0
3 years ago
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