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4 years ago

Factor the trinomial x^2 - 16x +63

1 answer:

3 0

Factor the following:
x^2 - 16 x + 63
The factors of 63 that sum to -16 are -7 and -9. So, x^2 - 16 x + 63 = (x - 7) (x - 9):
Answer: (x - 7) (x - 9)

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Solve the inequality. 2(4+2x)25x+5 o x<-2 O x>-2 O x<3 O X>3

balu736 [363]

Answer:

I believe X>3

Step-by-step explanation:

This is because 2(4+2x)= 8+4x

So, with this 25x-4x=19 and 8-5=3

The answer will be X>3

I hope this helped

3 0

3 years ago

3/4=3/8x-3/2 what is the answer for this?

Nonamiya [84]

The answer is x=6 ;)

3 0

3 years ago

A survey asked 10 boys and 10 girls how many text messages they sent the previous day. The

Genrish500 [490]

Answer:

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4 0

3 years ago

Is 14 200 000 in scientific notation 1.42 10x,5

Elan Coil [88]

Yes, the rules of scientific notation are:

1. All non-zero digits are significant

2. Zeros in between non-zeros are significant.

3. Zeros to the left of the first non-zero number are NOT significant.

4. Zeros to the right of non-zero numbers are significant IF a decimal point is present.

P.S: if you need help with sig fig rounding, let me know.

6 0

3 years ago

Find the slope of the lines. Are the 2 lines parallel or perpendicular? Explain how you can use the slope of two lines to tell i

rewona [7]

Answer:

slope = $\frac{3}{7}$ and - $\frac{7}{3}$ , perpendicular

Step-by-step explanation:

the equation of a line in slope-intercept form is

y = mx + c ( m is the slope and c the y-intercept )

y = $\frac{3}{7}$ x + 11 is in this form with m = $\frac{3}{7}$

Rearrange 7x + 3y = 13 into this form

subtract 7x from both sides

3y = - 7x + 13 ( divide all terms by 3 )

y = - $\frac{7}{3}$ x + $\frac{13}{3}$ ← in slope- intercept form

with m = - $\frac{7}{3}$

• Parallel lines have equal slopes

• The product of perpendicular slopes = - 1

The lines are not parallel since slopes are not equal

$\frac{3}{7}$ × - $\frac{7}{3}$ = - 1

Hence lines are perpendicular

6 0

3 years ago