All categories

2 years ago

Which graph represents the solution set of y = x2 + 4x + 3 and y = 2x + 6?

Mathematics

2 answers:

LUCKY_DIMON [66]2 years ago

5 0

is it graph A B C OR D?????????????????????????????

dybincka [34]2 years ago

3 0

I hope this helps you x^2+4x+3=2x+6 x^2+2x-3 =0 x +3 x -1 (x+3)(x-1)=0 x+3=0 x= -3 x-1=0 x=1

You might be interested in

There were 214 people at a concert. Main floor tickets cost $17 and balcony tickets cost $11 for a total of $2954. How may balco

earnstyle [38]

There is 100 $17 tickets no 114 $11 tickets

6 0

3 years ago

What is the value of n? n–2= 10n+ 4/2 Enter your answer in the box.

pentagon [3]

Answer:

-4 / 9

Step-by-step explanation:

n - 2 = 10n + 4/2

n - 10n = 4/2 + 2

-9n = 4/2 + 4/2 ( taking LCM of 4/2 and 2)

-9n = 8/2

-9n = 4

n = 4 / -9

therefore n = -4 /9 ( since the minus sign doesn't make a difference whether placed at numerator or denominator) .

7 0

2 years ago

Find the value of 3/4 x 14

Rzqust [24]

Answer:

21/2

Step-by-step explanation:

$\frac{3}{4}\times\:14\\\\\mathrm{Convert\:element\:to\:fraction}:\quad \:14=\frac{14}{1}\\=\frac{3}{4}\times\frac{14}{1}\\\\\mathrm{Cross-cancel\:common\:factor:}\:2\\=\frac{3}{2}\times\frac{7}{1}\\\\=\frac{3\times\:7}{2\times\:1}\\\\=\frac{21}{2}$

3 0

2 years ago

X-5y=2 and 9x+8=15 solve by substitution

lozanna [386]

$x-5y=2$
Hence $x=2+5y$ (Equation I)
$9x+8=15$ (Equation II)
Substituting Equation I in Equation II
$9(2+5y)+8=15$
$18+45y+8=15$
$26+45y=15$
$45y=-11$
Hence $y= - \frac{11}{45}$

Substituting this in Equation in I to get X

$x-5(- \frac{11}{45} )=2$
$x+ \frac{11}{9}=2$
$x= 2- \frac{11}{9}$
$x= \frac{17}{9}$

7 0

2 years ago

Frequency (y) varies inversely with wavelength (x). Find the frequency (measured in THz ) of blue light if its k value is 175,72

horsena [70]

We have been that frequency (y) varies inversely with wavelength (x).

We know that two inversely proportional quantities are in form $a=\frac{k}{b}$ , where a is inversely proportional to b and k is constant of variation.

Our required equation would be $y=\frac{k}{x}$ .

To find frequency of blue light, we will substitute $k=175,720$ and $x=230$ in our equation as:

$y=\frac{175,720}{230}$

$y=764$

Therefore, the frequency of blue light is 764.

8 0

3 years ago