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2 years ago

I need to factor this expression

Mathematics

1 answer:

soldier1979 [14.2K]2 years ago

6 0

Answer:

( 5x + 1 ) ( x - 4 )

Step-by-step explanation:

5x² - 19x - 4

= 5x² + x - 20x - 4

= x ( 5x + 1 ) - 4 ( 5x + 1 )

= ( 5x + 1 ) ( x - 4 )

Hence, factorized.

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Homework Progress 0 Find the nth term of the following sequence: 4 7 12 19 28

just olya [345]

Answer:

n²+3

Explanation:

The differences between the terms are not the same, so this is not "linear". Knowing that the sequence may have started with a 1, you can try subtracting the first number with a number to get 1, and use that number to subtract the rest.

4 - 3 = 1
7 - 3 = 4
12 - 3 = 9
19 - 3 = 16
28 - 3 = 25

In this case, subtracting 3 to all the numbers gave us perfect squares! So this means the nth term has to do with squaring the number and adding three afterward! This can be checked.

√1 = 1
√4 = 2
√9 = 3
√16 = 4
√25 = 5

As we found the values of these terms by subtracting three first and then finding its square root, the nth term will be the opposite; squaring and then adding three! Again, this can be checked!

1² + 3 = 4
2² + 3 = 7
3² + 3 = 12
4² + 3 = 19
5² + 3 = 28

Hope this helps !! :D

5 0

2 years ago

Write the equation of the line that is parallel to y=-2/3x+4 and passes through the point (3, -8).Quickest=BRAINLIEST

Alex73 [517]

Answer:

parallel= $-\frac{2}{3}$

x-intercept(s): ( 6 , 0 )

y-intercept(s): ( 0 , 4 )

Hope this helps :)

6 0

2 years ago

Read 2 more answers

Angela has a credit score of 800 describe reasons why her score might be so high

Lapatulllka [165]

She does not use her creator card a lot or she does not purchase many expensive items

6 0

3 years ago

1) 14 units2 2) 16 units2 3) 17 units2 4) 19 units2

horrorfan [7]

Answer:

<h2>4th option: 19 units2 </h2>

Step-by-step explanation:

<h3>The given figure can be divided as (i) upper rectangle, (ii) lower rectangle </h3>

Then,

(i) Breadth of upper rectangle = 2 units

Length of upper rectangle = 8 - 1 = 7 units

Therefore, 

Area of the upper rectangle = 7 × 2 = 14 units2

(ii) Breadth of lower rectangle = 1 unit

Length of lower rectangle = 5 units

Therefore, 

Area of the lower rectangle = 5 × 1 = 5 units2

Since,

Area of the figure is = Area of upper rectangle + Area of lower rectangle 

= 14 units2 + 5 units2

= 19 units2 (Ans) (4th option)

7 0

3 years ago

(3x)^2-2x^2 when x=-2

Leto [7]

Hey there!

(3x)^2 - 2x^2

= (3(-2))^2 - 2(-2)^2

= -6^2 - 2(4)

= 36 - 8

= 28

Therefore, your answer is: 28

Good luck on your assignment and enjoy your day!

~Amphitrite1040:)

3 0

2 years ago