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4 years ago

8x^2-x-9=(x+1)(?) missing factor

Mathematics

2 answers:

garik1379 [7]4 years ago

8 0

8x^2 - x - 9 = (x+1)(8x - 9)

Missing factor: (8x - 9)

Hope it helps

Elis [28]4 years ago

8 0

If you were to factorise 8x² - x - 9 using the factor (x + 1), your other factor would need to be (8x - 9). This is because when you expand
(x + 1)(8x - 9), you get 8x² - 9x + 8x - 9, which simplifies to 8x² - x - 9.
I hope this helps!

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Solve the triangle. a = 12, b = 21, C = 94° c ≈ 24.2, A ≈ 32.7°, B ≈ 53.3° c ≈ 24.9, A ≈ 54.3°, B ≈ 31.7° c ≈ 24.2, A ≈ 28.7°, B

kolbaska11 [484]

Answer:

c ≈ 24.9, A ≈ 28.7°, B ≈ 57.3°

Step-by-step explanation:

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4 years ago

Simplify. 5x^3/(7x^3+x^4)

Mashutka [201]

Hello,

$\frac{5 x^{3} }{7 x^{3} + x^{4} } = \frac{5 x^{3} }{x^{3}(7+x) }=\frac{5} {7+x}$

Answer Almost A with parenthesis

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4 years ago

In the accompanying diagram of parallelogram

Brilliant_brown [7]

ANSWER: ⇒ 30°

I hope this helps you :)

3 0

3 years ago

The ph of vinegar is 2.9 and the ph of milk is 6.6. How many times greater is the hydrogren ion concentration of vinegar than of

shutvik [7]

Answer:

Step-by-step explanation:

H+ is the hydrogen ion concentration.

This problem requires the use of solving log equation.

PH of vinegar is 2.9, lets find the number of hydrogen ions in it by using the equation:

$PH=-Log[H^{+}]\\2.9=-Log[H^+]\\-2.9=Log_{10}[H^+]$

Note: Log is normally base 10 if not specified

Now, to solve, we use exponential to log conversion formula shown below:

$Log_{z}x=b\\z^b=x$

Now lets solve:

$-2.9=Log_{10}[H^+]\\H^+=10^{-2.9}\\H^+=0.001259$

Now, the PH of milk is 6.6, so we follow same procedure and find the number of hydrogen ion in milk. Shown below:

$PH=-Log[H^{+}]\\6.6=-Log[H^+]\\-6.6=Log_{10}[H^+]\\H^+=10^{-6.6}\\H^+=0.0000002512$

So, to find how many times it is greater, we divide first answer we found by the second answer:

$\frac{10^{-2.9}}{10^{-6.6}}\\=5011$

That is about 5000 times, answer D is right.

3 0

3 years ago

How would I turn 8x- 4y = 16 into y=mx+b form

ivolga24 [154]

Answer: y=2x-4

Step-by-step explanation:

8x-4y=16 subtract 8x from both sides

-4y=-8x+16 now divide -4 by both sides

y=2x-4

4 0

3 years ago

Read 2 more answers