3 years ago

Can the equation have a positive root: (x+5)(x+6)+9=0

Mathematics

1 answer:

mafiozo [28]3 years ago

8 0

Answer:

Step-by-step explanation:

In expanded form, the equation is ...

x^2 +11x +39 = 0

The discriminant is ...

11^2 -4(1)(39) = -35

It is negative, so there are only complex roots.

_____

Descartes' rule of signs tells you there are zero positive real roots, because there are zero sign changes in the coefficients.

You might be interested in

I need help plsss. im stuck

noname [10]

Answer:

h = 6 cm

Step-by-step explanation:

Volume of cylinder = 54 π cm³

πr²h = 54π

π * 3 * 3 * h = 54π

$h = \frac{54 \pi }{\pi *3*3}\\\\h= 6$

6 0

3 years ago

Is 3.14 rational or irrational

crimeas [40]

<span>3.14 is often given as an approximation for pi, and pi is an irrational number. But by itself, 3.14 is rational.

It is rational
</span>

6 0

3 years ago

Read 2 more answers

The triangular prism and the triangular pyramid shown have the same base and the same height. Use the drop-down menus to complet

Mila [183]

A triangular prism Vol. = area (A) of the triangular base × height (h) of prism
A triangular pyramid V = A × 1/3 h
So since they have same base A and h, the V of the pyramid will be exactly 1/3 the V of the prism

3 0

3 years ago

Read 2 more answers

What is the y-intercept of the line that passes through the points (-3,8) and (1,6)? Convert the answer to a decimal, if necessa

artcher [175]

Answer:

6.5

Step-by-step explanation:

The midpoint of the line is (-1,7). If you draw a line between that and (1.6), you’ll pass through the y-axis at 6.5.

4 0

4 years ago

Read 2 more answers

If your answer is b<img src="https://tex.z-dn.net/?f=%5Cneq" id="TexFormula1" title="\neq" alt="\neq" align="absmiddle" class="l

adelina 88 [10]

Answer:

This means that b is not equal to -10.

3 0

2 years ago