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4 years ago

How do you subtract an integer from another integer without using a number line or counters? Give an example.

1 answer:

5 0

For example, if you have -12 - (-16), you just add the absolute value of the two numbers and put a - in front of it. 12 + 16 = 28. Now just put the sign in front of it and your done. -28 is the answer.

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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

4 years ago

Find the range of the line

navik [9.2K]

Answer:

(-10,3),(9,0)

Step-by-step explanation:

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3 years ago

What is the overall charge for neon,oxide, copper, and tin ?

Finger [1]

Answer:

Neon is stable, hence has no charge.

Oxide (O2-) has a charge of -2

Cooper (Cu2+) has a charge of +2

Tin (Sn2+) has a charge of +2

hence overall charge = -2+2+2

Overall charge = +2

6 0

3 years ago

5(t+3)=-3.5 solve for t

mestny [16]

Answer: t=−3.7

If I Helped, Please Mark Me As Brainliest, Have A Great Day :D

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3 years ago

Read 2 more answers

How many inches is 35 yards?

Tomtit [17]

Answer:

1260 inches

Step-by-step explanation:

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2 years ago