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3 years ago

First step for solving this quadratic equation? x2+2x-11=4

Mathematics

1 answer:

kenny6666 [7]3 years ago

3 0

Answer:

subtract 4 from both sides

Step-by-step explanation:

Given

x² + 2x - 11 = 4

First step : subtract 4 from both sides

x² + 2x - 15 = 0 ← in standard form

Second step : factorise the quadratic

(x + 5)(x - 3) = 0 ← in factored form

Third step : equate each factor to zero and solve for x

x + 5 = 0 ⇒ x = - 5

x - 3 = 0 ⇒ x = 3

Fourth step : state the solutions

solutions are x = - 5, x = 3

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The table represents the metric volume measure of a liter. Each amount is represented by its power of 10.

solmaris [256]

Answer:

10000

Step-by-step explanation:

What is 10 to the 6th power? That would be 1000000. 10 to the second power is 100.

1000000

100

There are 4 zeros left. Meaning that the answer is 10000.

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3 years ago

MULTIPLE CHOICE:

Vanyuwa [196]

Answer:

4.7 and 5.1

Step-by-step explanation:

7.4 only works if it shows less than or equal to inequality

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3 years ago

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UNO [17]

Answer:

Step-by-step explanation:

We have to multiply it by two because they have us 2 numbers for the legs, we use the Pythagorean theorem thing, but we have to basically add them, or we can multiply y 2(since they are the same number). Anyways $18\sqrt{2} (2)= 36\sqrt{2}$

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3 years ago

4. What is the measure of the missing angle?

defon

Answer:

X = 28

Step-by-step explanation:

The angle is 90 degrees in total and one portion of the angle is 62 degrees

You subtract the 62 degrees from the 90-degree angle to figure out the other unknown portion of the angle

90 - 62 = 28

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2 years ago

What linear function represents the line given by the point slope equation y+7= 2/3(x+6)?

aleksandrvk [35]

Answer:

The graph of the line in the attached figure

Step-by-step explanation:

we have

$y+7=\frac{2}{3}(x+6)$

This is the equation of a line into point slope form

The slope is $m=\frac{2}{3}$

The line pass through the point (-6,-7)

To graph the line find the y-intercept

Remember that

The y-intercept of the line is the value of y when the value of x is equal to zero

For x=0

$y+7=\frac{2}{3}(0+6)$

$y+7=\frac{2}{3}(6)$

$y+7=4$

$y=4-7=-3$

The y-intercept is the point (0,-3)

with the point (-6,-7) and (0,-3) plot the line

see the attached figure

8 0

3 years ago