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3 years ago

Which equation could have been used to create this table? need answer fast

Mathematics

2 answers:

ludmilkaskok [199]3 years ago

7 0

Answer:

y=6x

Step-by-step explanation:

Each value for y is can be divided by 6 for the value of x

yulyashka [42]3 years ago

3 0

Answer:

y=6x

Step-by-step explanation:

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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

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

Putting values and solving

$x=\frac{-(-980)\pm\sqrt{(-980)^2-4(49)(1760)}}{2(49)}\\x=\frac{980\pm\sqrt{614656}}{98}\\Solving\\x=18 \,\, and x =2$

Verifying the solution by putting values of x in given equation

Putting x=18

$\sqrt{9x+7} +\sqrt{2x}=7\\\sqrt{9(18)+7} +\sqrt{2(18)}=7\\\sqrt{169} +\sqrt{36}=7\\13+6=7\\19\neq 7$

So, x=18 is not solution o given equation.

Putting x = 2

$\sqrt{9x+7} +\sqrt{2x}=7\\\sqrt{9(2)+7} +\sqrt{2(2)}=7\\\sqrt{25} +\sqrt{4}=7\\5+2=7\\7=7$

So, x=2 satisfies the equation

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

7 0

3 years ago

27/9+8ggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggg

nexus9112 [7]

Answer:

3+8g

Step-by-step explanation:

27/9+8g=3+8g

3 0

3 years ago

What is a number less than 400 but bigger than 312

Vikentia [17]

There are a lot of numbers that fall into that category...

Lets call your number x, then 400 < x < 312

That means x can be any number in between 400 and 312. But, x cannot be 400 or 312

x can be a total of 87 numbers which are listed here:

 313, 314, 315, 316, 317, 318, 319, 320, 321, 322, 323, 324, 325, 326, 327, 328, 329, 330, 331, 332, 333, 334, 335, 336, 337, 338, 339, 340, 341, 342, 343, 344, 345, 346, 347, 348, 349, 350, 351, 352, 353, 354, 355, 356, 357, 358, 359, 360, 361, 362, 363, 364, 365, 366, 367, 368, 369, 370, 371, 372, 373, 374, 375, 376, 377, 378, 379, 380, 381, 382, 383, 384, 385, 386, 387, 388, 389, 390, 391, 392, 393, 394, 395, 396, 397, 398, and 399.

5 0

3 years ago

Read 2 more answers

Salma paid 14.75 for a 2.12 pound bag of shrimp at one store. The following week, she paid 24.99 for a 3.77 pound bag at another

ladessa [460]

To find the unit price of each bag, divide each cost by the weight to find the cost of shrimp per pound.

For the 2.12 pound bag: 14.75 / 2.12 = $6.96 (rounded to the nearest cent)

For the 3.77 pound bag: 24.99 / 3.77 = $6.63 (rounded to the nearest cent)

You can tell that buying the 3.77 pound bag is better based on the unit price because of 6.63 < 6.96.

3 0

3 years ago

Read 2 more answers

What are the root(s) of the quadratic equation whose related function is graphed below?

oksian1 [2.3K]

Answer:

0 and 4

Step-by-step explanation:

roots are where the graph intersects at x axis

5 0

3 years ago