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3 years ago

Factor completely please

Mathematics

2 answers:

nasty-shy [4]3 years ago

8 0

Answer:

it the third one

gladu [14]3 years ago

5 0

Answer:

(c-5)(3+4c)

Step-by-step explanation:

3c-15+4c^2-20c

4c^2-17c-15

Berry Method

4*(-15)=-60

What two numbers multiply by each other to get -60 but add up to -17

-20 and 3

$\frac{(4c+3)(4c-20)}{4}$

(4c+3)(c-5)

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In a sequence of ten terms, each term (starting with the third term) is equal to the sum of the two previous terms. The seventh

poizon [28]

Answer:

$\boxed{a_1+a_2+a_3+a_4+a_5+a_6+a_7+a_8+a_9+a_{10}=66}$

Step-by-step explanation:

We know that in a sequence of ten terms, each term (starting with the third term) is equal to the sum of the two previous terms. The seventh term is equal to 6. Therefore, we have

$a_1+a_2=x\\a_3=x\\a_4=2x\\a_5=3x\\a_6=5x\\a_7=8x\\$

We know that:

$a_7=6\\\implies 8x=6\\x=\frac{3}{4}$

We get:

$a_1+a_2=x=\frac{3}{4}\\\\a_3=x=\frac{3}{4}\\\\a_4=2x=\frac{3}{2}\\\\a_5=3x=\frac{9}{4}\\\\a_6=5x=\frac{15}{4}\\\\a_7=8x=6\\\\a_8=13x=\frac{39}{4}\\\\a_9=21x=\frac{63}{4}\\\\a_{10}=34x=\frac{102}{4}\\$

Therefore, we calculate

$\boxed{a_1+a_2+a_3+a_4+a_5+a_6+a_7+a_8+a_9+a_{10}=66}$

4 0

2 years ago

Convert the equation y + 1 = -3/5 (x+5)

cestrela7 [59]

If you simplify each side of the equation you get this y= -4 - 3x/5

4 0

2 years ago

(Apex!) Select the two values of x that are roots of this equation 3x-5=-2x^2

katovenus [111]

Answer:

B and D

Step-by-step explanation:

Write as a quadratic

-2x² - 3x + 5 = 0

Factor

-2x² - 5x + 2x + 5 = 0

-x(2x + 5) + 1(2x + 5) = 0

(1 - x)(2x + 5) = 0

To make the equation 0, x is either 1 or -5/2.

4 0

3 years ago

Can I have help with this please?

mamaluj [8]

Answer:

x+1+2x-6= 16

3x-5 =16

3x=16+5

3x=21

x=21/3

x= 7

VW= 2x-6 = 2(7) -6 = 14-6 = 8

5 0

3 years ago

How do I solve for x?

Marina CMI [18]

Multiply both sides by 2

7 0

2 years ago