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siniylev [52]
3 years ago
6

7xy2-343xfactorize the expression​

Mathematics
1 answer:
Tatiana [17]3 years ago
8 0

Answer:

7x(y - 7)(y + 7)

Step-by-step explanation:

7x {y}^{2}  - 343x \\  \\  = 7x( {y}^{2}  - 49) \\  \\  = 7x ( {y}^{2}  -  {7}^{2} ) \\  \\  = 7x(y  -  7)(y  + 7)

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Someone help me I have have like 5 questions if you answer them all you’ll get brainlest;) 1/5
AysviL [449]

Answer:

We conclude that the list which

shows values in order from LEASE to GREATEST is:

  • \frac{49}{16},  \frac{80}{19},  \sqrt{25}

Step-by-step explanation:

Given the values

\sqrt{30}=5.477

\frac{49}{16}=3.0625

\frac{80}{19}=4.210

\sqrt{25}=5

Writing all the values from LEASE to GREATEST

3.0625, 4.210, 5, 5.477

OR

\frac{49}{16},  \frac{80}{19},  \sqrt{25}, \sqrt{30},

Therefore, from the given answer options, we conclude that the list which

shows values in order from LEASE to GREATEST is:

  • \frac{49}{16},  \frac{80}{19},  \sqrt{25}
6 0
3 years ago
Why is the equation for Newton's Law of Gravitation negative?
dexar [7]

Answer:

gravitational force of attraction between two positive mask or two negative mass and repulsive between one negative into positive minus negative sign only appears when the force is acting in the opposite direction when considered the direction.

6 0
3 years ago
Read 2 more answers
A national interest rate on houses for 25 years is 4.3%. A banker in a large northwestern city believes that the local interest
stepladder [879]
The national interest rate on houses for 25 years is 4.3%. The banker wishes to test that the local interest rates are lower than the national rate. So he should use the initial data of 4.3% interest as his base data. Then he should investigate the rates of houses in the local vicinities and compare it to his base data. 
7 0
4 years ago
Given the function how do I solve
BARSIC [14]

Answer: (a) -7      (b) \bold{\dfrac{4}{25}}      (c) \bold{-\dfrac{5}{2}}    (d) 4

Step-by-step explanation:

A) f(x) = 2x - 3      when x is between -5 and -2 (including -5 and -2)

B) f(x) = x²            when x is between -2 and 2 (including 2)

C) f(x)=-\dfrac{3}{2}x+\dfrac{7}{2}             when x is between 2 and 5 (including 5)

a) Equation A includes x = -2

   f(x) = 2x - 3

   f(-2) = 2(-2) - 3

           =  -4    - 3

           =       -7

b) Equation B includes x = -\dfrac{2}{5}

   f(x) = x²

   f\bigg(-\dfrac{2}{5}\bigg) = \bigg(-\dfrac{2}{5}\bigg)^2

        =\dfrac{4}{25}

c) Equation C includes x = 4

   f(x)=-\dfrac{3}{2}x+\dfrac{7}{2}

   f(4)=-\dfrac{3}{2}(4)+\dfrac{7}{2}

       =-\dfrac{12}{2}+\dfrac{7}{2}

       =-\dfrac{5}{2}

d) Try each equation to see if x falls within the values given.

A) f(x) = 2x - 3

   -2.5 = 2x - 3

    0.5 = 2x

  0.25 = x    NOT VALID since x should be between -5 and -2

B) f(x) = x²

   -2.5 = x²

   \sqrt{-2.5}=x  NOT VALID since x cannot be an imaginary number

C) f(x)=-\dfrac{3}{2}x+\dfrac{7}{2}

    -\dfrac{5}{2}=-\dfrac{3}{2}x+\dfrac{7}{2}

    -\dfrac{12}{2}=-\dfrac{3}{2}x

    -\dfrac{12}{2}\bigg(\dfrac{2}{3}\bigg)=x

    4 = x        VALID since x is between 2 and 5

5 0
4 years ago
I need help with Estimated Variable and Fixed Cost. How do I figure that out in the problem attached?
saul85 [17]

The fixed and variable costs of the given table of production costs are respectively; $161280 and $42

<h3>How to calculate fixed and variable costs?</h3>

Variable costs are costs that vary/change depending on the company’s volume of production while fixed costs are costs that do not change in relation to volume of production.

Fixed costs = Production Cost + Selling expenses + Administrative Expenses

Fixed Cost = $103200 + $21500 + $7300 + $1600 + $1800 + $21000 + $2600 + $2280 = $161280

Variable cost = $15 + $10 + $8 + $3 + $3 + $1 + $2

Variable cost = $42

Read more about fixed and variable costs at;brainly.com/question/15705476

#SPJ1

6 0
2 years ago
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