Iahmed2409 hello how are you :)

Mathematics

1 answer:

scoundrel [369]3 years ago

5 0

Answer:hello

Step-by-step explanation:

You might be interested in

suppose that a movie rental company supervid charges a $30 subscription fee and $1.5 per movie. lets say that another company me

valina [46]

Answer:

the first on is y=30+1.5x and megawatch is y=100+0.90x

Step-by-step explanation:

7 0

2 years ago

3. A solid sphere of radius 3 cm is melted and then recast into small spherical balls, each of

Viefleur [7K]

Answer:

3.6

Step-by-step explanation:

6 0

3 years ago

Use double angle to rewrite 12sinxcosx

castortr0y [4]

Sin2x = 2 sinx cosx
so 12 sinx cosx = 6 sin2x Answer

3 0

3 years ago

Help me please 9 through 12

VARVARA [1.3K]

Ask you moma and dada

8 0

3 years ago

What is the solution for x in the given equation? The square root of 9x +7 + the square root of 2x = 7

cestrela7 [59]

Answer:

The solution is x =2 for the given equation $\sqrt{9x+7} +\sqrt{2x}=7$

Step-by-step explanation:

We need to find the solution for x in the given equation.

$\sqrt{9x+7} +\sqrt{2x}=7$

Solving:

Subtract $\sqrt{2x}$ from both sides

$\sqrt{9x+7} =7-\sqrt{2x}$

Taking square on both sides

$(\sqrt{9x+7})^2 =(7-\sqrt{2x})^2\\Using\,\, (a-b)^2 = a^2-2ab-b^2\\9x+7=(7)^2-2(7)(\sqrt{2x})+(\sqrt{2x})^2\\9x+7=49-14\sqrt{2x}+2x\\9x-2x+7-49=-14\sqrt{2x}\\7x-42=-14\sqrt{2x}\\Taking\,\,square\,\,on\,\,both\,\,sides\\(7x-42)^2=(-14\sqrt{2x})^2\\49x^2-2(7x)(42)+(42)^2= 196(2x)\\49x^2-588x+1764=392x\\49x^2-588x+1764-392x=0\\49x^2-980x+1764=0\\Using \,\,quadratic \,\, equation \,\,to \,\, find \,\, value \,\, of \,\, x \\x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}\\a= 49, \, b= -980 \,\,and\,\, c = 1764$