Factor 20x2 + 25x – 12x – 15 by grouping

Mathematics

1 answer:

Mazyrski [523]3 years ago

4 0

Answer:

(4x+5)(5x-3)

Step-by-step explanation:

There you go! glad to help :)

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maria [59]

Answer:

option 2 is correct

mark this as brainliest!

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3 years ago

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Phantasy [73]

If we have 2 more blue pens than black pens, our blue pens can be rewritten as blue = 2 + black. Now we can set up an equation. Originally this equation would involve both blue and black, but since we only have 1 equation to set up, we can only have 1 unknown. That's why we base the number of blue pens on the number of black pens and do a substitution. So instead of blue + black = 94, we have (black + 2) + black = 94. That simplifies to 2 black + 2 = 94, and 2 black = 92. Now if we divide by 2, we get that the number of black pens is 46. If we have 2 more blue than black, the number of blue pens we have is 48. 46 + 48 = 94, so there you go!

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3 years ago

URGENT! Please and Thanks :)

eimsori [14]

For this case we will define the following:
A, B: are the values of the triangle angles
a, b: are the values of the lengths of the sides opposite the angles A, B.
We then have to use the law of the sine:
$\frac{sinB}{b} = \frac{sinA}{a}$
Clearing the angle B we have:
$sinB = \frac{sinA}{a}*b$
$B = arcsin(\frac{sinA}{a}*b)$
Substituting values we have:
$B = arcsin(\frac{sin113}{200}*134)$
$B = 38.08$
Answer:
the following is true:
A. angle B=38.08 degrees

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3 years ago

Solve for c. 9c +4= -5c + 14+ 13c

notka56 [123]

hope this will help u ......

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Rufina [12.5K]

Yes, 13 is correct
If you draw the right triangle, the two legs will be 5 and 12.
5 and 12 are parts of a Pythagorean triple. 13 completes the triplet.

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3 years ago