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77julia77 [94]
3 years ago
14

50 POINTS !!!!!!!!

Mathematics
2 answers:
iVinArrow [24]3 years ago
8 0

Answer:

-2b,  b/12,  -0.9b

Step-by-step explanation:

I understand this is late, but hopefully, it'll help someone who needs it, have a good day

Bingel [31]3 years ago
6 0

Answer:

Step-by-step explanation:

 i wont tell you the answer but if you use brainly all the time you will not learn how to do it so try hard get a pen or a pencil get paper and stay confident you got this! i belive in you

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Can someone help me with these algebraic expressions? And can you please EXPLAIN OR SHOW YOUR WORK!
lyudmila [28]

Answer:

1.  (3x - 2)(x + 5).

2. 2(x + 4)(x - 2).

3. (2x - 9)(2x + 9).

Step-by-step explanation:

1. f(x) = 3x^2 +13x -10

Try to factor by the ac method:

3 * -10 = -30

We need 2 numbers whose product is -30 and whose sum is + 13.

They are -2 and +15, so we write:

3x^2 + 15x - 2x - 10       Factor by grouping:

= 3x(x + 5) - 2(x + 5)

= (3x - 2)(x + 5).

2.  f(x) = 2x^2+4x-16

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

Now we need 2 numbers whose product is -8 and whose sum is + 2.

They are +4 and -2. So:

= 2(x + 4)(x - 2).

3. 4x^2 - 81    This is the difference of 2 squares so the factors are:

(2x - 9)(2x + 9).

4 0
3 years ago
Explain why the graph does or does not have represent a proportional relationship between the variables D&T
vlabodo [156]
Wait what???????????????
4 0
3 years ago
Read 2 more answers
Help me please mathematics
DanielleElmas [232]

Answer:

C. 253.5

Step-by-step explanation:

A=6a^{2}

a = Edge

A = 6*6.5^{2}

A = 253.5

4 0
3 years ago
WHAT IS THE VALUE OF X PLEASE HURRY!!!!
abruzzese [7]

Answer:

I think 48, since it's an equilateral triangle.

Step-by-step explanation:

8 0
3 years ago
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Kevin and Ornella entered a fun run. Their times for completing the course totaled 1 hour 52 minutes. Kevin's time was 4 minutes
masha68 [24]

Answer:

58 minutes

Step-by-step explanation:

Kelvin and Ornella completed the course in 1 hour 52 minutes

60 minutes + 52 minutes

= 112 minutes

Kelvin time is 54 minutes

Kelvin time is 4 minutes less than ornella

Hence Ornella time is 58 minutes

4 0
3 years ago
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