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3 years ago

15

Select one of the factors of 5x2 + 7x + 2.

2 answers:

Dafna1 [17]3 years ago

6 0

5x² + 5x + 2x + 2
5x(x + 1) + 2(x + 1)

(5x + 2)(x + 1)

Anon25 [30]3 years ago

4 0

(5x + 2)(x + 1)

Above are the factors. You can get these by looking for numbers in the front that multiply to the first term and numbers in the back that multiply to the last term. Then FOIL to see if it works for the middle term. There is some trial and error to this.

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Please help me I’m so lost !!!!

Tasya [4]

Answer:

$4095$

Step-by-step explanation:

$\sum _{n=1}^63\left(4^{n-1}\right)\:$

$\sum _{n=1}^63\cdot \:4^{n-1}$

Compute general progression:

$\frac{3\cdot \:4^{\left(n+1\right)-1}}{3\cdot \:4^{n-1}}=4$

$r=4\\$

$a_1=3\cdot \:4^{1-1}$

$a_1=3$

nth term is computed by:

$r=4,\:a_n=3\cdot \:4^{n-1}$

plug in the values $n=6,\:\spacea_1=3,\:\spacer=4$ :

$=3\cdot \frac{1-4^6}{1-4}$

$=4095$

5 0

3 years ago

Two ratios by entering less than greater than or equal than 16 to 15, 30 to 80

Mumz [18]

Answer:

6:15>30:80

Step-by-step explanation:

The ratio;

6:15 written in the form x/1 is equivalent to 2/5 or 0.4

30:80 written in the form x/1 is equal to 3/8 or 0.375

0.4 is greater than 0.375

Therefore;

<u>6:15>30:80</u>

6 0

3 years ago

Which is a solution of the equation y=4x+3

Evgesh-ka [11]

If you plug in the respective numbers (x,y) you'll get the answer choice C. 19=4(4)+3 : 19=19

3 0

3 years ago

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Need help with this one

Sati [7]

Answer:

C

Step-by-step explanation:

7 0

3 years ago

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X · 1 + x/1 = _____.<br><br> A. 1<br> B. x<br> C. 1 + x<br> D. 2x

elena55 [62]

Answer:

D. 2x

Step-by-step explanation:

x · 1 + x/1

= x + x

= 2x

3 0

3 years ago