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goblinko [34]
3 years ago
7

The roots of the equation 2x² – 5 = 0 are

Mathematics
1 answer:
Vikentia [17]3 years ago
5 0

Answer:

4

Step-by-step explanation:

x = root under 5/2

so it is real and irrational number

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Write the equations of 2 straight lines which are perpendicular to y = -3x +0.5.
olchik [2.2K]

Answer:

y = (1/3)x + 7

y = (1/3)x - 15

These are two examples out of an unlimited number of possibilities.

Step-by-step explanation:

The slope of this given line is -3.  Any new line perpendicular to this one is the negative reciprocal of -3:  1/3.

The slope-intercept form is y = mx + b.  Here m = 1/3, so the revised form is

y = (1/3)x + b.

Two straight lines perpendicular to the given line are easily found by selecting two different values for b:

y = (1/3)x + 7

y = (1/3)x - 15

3 0
3 years ago
What is this problem?<br><br>9+6÷(8-2)
GenaCL600 [577]

Hey there! Welcome to Brainly.

Let's solve using order of operations (PEMDAS), which is Parentheses, Exponents, Multiplication, Division, Addition, and Subtraction.

First, we solve the parentheses.

9+6÷6

Now we take care of the division.

9+1

We add.

10

Therefore, your answer is 10

I hope this helps!

5 0
3 years ago
Help me please!! I don't know how to do this
Nesterboy [21]

Answer:

probably the last answer

so D

5 0
3 years ago
Sy= 2x² - 6x+8<br> y=-2|x-1| +9<br> Solve plz
vampirchik [111]

Answer;

S = 2 ( ( − y + 11 2 , y − 7 2 ) 2 + 4 − 3 ( − y + 11 2 , y − 7 2 ) ) y   x = − y 2 + 11 2 x = y 2 − 7 2

Step-by-step explanation:

divide each term by y then simplify

4 0
3 years ago
The area of a square is given by x2, where x is the length of one side. Mary's original garden was in the shape of a square. She
Vinil7 [7]

Answer:

128\text{ ft}^{2}

Step-by-step explanation:

We have been given that the area of a square is given by x^2, where x is the length of one side.

Mary's original garden was in the shape of a square. She has decided to double the area of her garden. So the new area of Mary's garden will be 2 times the area of original garden.

We can represent this information in an equation as:

\text{Area of Mary's new garden}=2x^{2}

Therefore, the expression 2x^2 will represent the area of Mary's new garden.

To evaluate the area of new garden, if the side length of Mary's original garden was 8 feet, we will substitute x equals 8 in our expression.

\text{Area of Mary's new garden}=2(8\text{ ft})^{2}

\text{Area of Mary's new garden}=2*64\text{ ft}^{2}

\text{Area of Mary's new garden}=128\text{ ft}^{2}

Therefore, the area of Mary's new garden will be 128 square feet.

4 0
3 years ago
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