3 years ago

Help me plzzzzzzzzzzzzzzzz

Mathematics

1 answer:

slamgirl [31]3 years ago

7 0

Hello the 3rd one is your answer. Do you have to show work?

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I need help with number 30

yanalaym [24]

Answer:

220

Step-by-step explanation:

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3 years ago

Factor 16x^2 + 49. Check your work.

Shtirlitz [24]

Answer:

$16x^2+49=(x-\frac{7i}{4})(x+\frac{7i}{4})$

Step-by-step explanation:

Given : Expression $16x^2+49$

To find : Factor the expression ?

Solution :

The given expression is a quadratic function $y=ax^2+bx+c$ the solution is $x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}$

On comparing with general form,

a=16, b=0, c=49

Substitute in the formula,

$x=\frac{-0\pm\sqrt{0^2-4(16)(49)}}{2(16)}$

$x=\frac{\pm\sqrt{-3136}}{32}$

$x=\frac{\pm56i}{32}$

$x=\frac{56i}{32},\frac{-56i}{32}$

$x=\frac{7i}{4},\frac{-7i}{4}$

Factors are $(x-\frac{7i}{4}),(x+\frac{7i}{4})$

Therefore, $16x^2+49=(x-\frac{7i}{4})(x+\frac{7i}{4})$

4 0

3 years ago

If f(x) = 16x-30 and g(x) = 14(x)-6 for which value of x does (f-g) (x) = 0

almond37 [142]

This is a system where (f-g)(x) is wanted.
(16x-30)-(14x-6) .... 2x-24 *be careful with signs and parenthesis placement.

Now set 2x-24 = 0 and so x = 12

6 0

3 years ago

Morgan has 1/3 of a pond of bottle caps storend evenly in 3 boxes. How many pounds of bottles caps are in each box?

GREYUIT [131]

1/6 is the answer 1/3 time 1/3= 1/6

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3 years ago

13. Perform the following division: –48 ÷ 5

Kipish [7]

Answer:

C) -9.6

Step-by-step explanation:

3 0

3 years ago

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