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3 years ago

What number has the square root that lies between 8 and 9?

Mathematics

2 answers:

devlian [24]3 years ago

8 0

Step-by-step explanation:

So, √69 is between 8 and 9 . Since 69 is much closer to 64 than to 81 , the best whole number estimate is 8

Natalka [10]3 years ago

5 0

If I did the square root correctly it would be 8

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What is the solution set of {x|x<-3} intersection {x|x>5}?

ziro4ka [17]

There’s no solution because x is less than 3 there is no way is greater than 5.

Hope this helps!

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3 years ago

Write a function rule for the area of rectangle whose length is 2ft more than its width. What is the area of the rectangle when

Marianna [84]

According to the problem, the length is 2 feet more than its width, which is expressed as the following function

$l=w+2$

If the width is x, then the length is x+2.

We can express the following function for the area

$A(x)=x(x+2)$

Let's replace the width x = 11 ft.

$A(11)=11\cdot(11+2)=11(13)=143$ <h2>Hence, the area is 143 square feet. </h2><h2>The function for the area is</h2> $A(x)=x(x+2)$

Where x represents the width.

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1 year ago

The quadratic formula gives which roots for the equation 2x^2 + x - 6 = 0?

Jet001 [13]

Answer:

The roots are $x = (\frac{3}{2}, -2)$ , which is given by option C.

Step-by-step explanation:

Solving a quadratic equation:

Given a second order polynomial expressed by the following equation:

$ax^{2} + bx + c, a\neq0$ .

This polynomial has roots $x_{1}, x_{2}$ such that $ax^{2} + bx + c = a(x - x_{1})*(x - x_{2})$ , given by the following formulas:

$x_{1} = \frac{-b + \sqrt{\Delta}}{2*a}$

$x_{2} = \frac{-b - \sqrt{\Delta}}{2*a}$

$\Delta = b^{2} - 4ac$

In this question, we have that:

$2x^2 + x - 6 = 0$

Which is a quadratic equation with $a = 2, b = 1, c = -6$ . So

$\Delta = 1^{2} - 4*2(-6) = 1 + 48 = 49$

$x_{1} = \frac{-1 + \sqrt{49}}{2*2} = \frac{6}{4} = \frac{3}{2}$

$x_{2} = \frac{-1 - \sqrt{49}}{2*2} = \frac{-8}{4} = -2$

So the roots are $x = (\frac{3}{2}, -2)$ , which is given by option C.

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3 years ago

Which of the following is not a possible value for a probability?

USPshnik [31]

Probability can never be greater than 1. Therefore 11.05 is not a possible value for a probability.

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3 years ago

Read 2 more answers

Parallelogram ABCD is dilated to form parallelogram EFGH. Which corresponding angle is congruent to angle A? Type your answer in

sdas [7]

"A" is the first letter of the name of parallelogram ABCD. "E" is the first letter of similar parallelogram EFGH. The corresponding angles are the corresponding letters.

The appropriate answer is
E

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3 years ago