3 years ago

The problem is in the pictures, please show step by step how to do it. Thanks! :)

Mathematics

2 answers:

Rama09 [41]3 years ago

7 0

Answer:

-4,-5/2

Step-by-step explanation:

2x^2+3x-20 =0

2x^2+8x-5x-20 =0

2x(x+4)-5(x+4) =0

(x+4)(2x-5) =0

Either,

x+4=0

x=-4

Or,

2x-5=0

2x=5

x=5/2

vlada-n [284]3 years ago

5 0

$2x^2+3x-20=0\\2x^2+8x-5x-20=0\\2x(x+4)-5(x+4)=0\\(2x-5)(x+4)=0\\x=\dfrac{5}{2} \vee x=-4$

You might be interested in

Which is a better buy: 3 pounds for $3.87 or 5 pounds for $6.65?

ANEK [815]

5 pounds for 6.65 because you will get more pounds for a good amount of money.

7 0

2 years ago

Read 2 more answers

Find the perimeter and area of the figure

Ludmilka [50]

Answer:

Step-by-step explanation:

C. is the only answer option with the correct perimeter of 18u

area is correct too

5 0

3 years ago

Read 2 more answers

Pls solve for # 5-8 Thanks

MatroZZZ [7]

2x - 3 = y
-3x + 5 = y
-4/5x -2 =y
1/2x + 9 = y

7 0

3 years ago

Explain how to identify A relative maximum and relative minimum of a function using key features

Vlad1618 [11]

Found this on google to help you out but it states “ Find the first derivative of a function f(x) and find the critical numbers. Then, find the second derivative of a function f(x) and put the critical numbers. If the value is negative, the function has relative maxima at that point, if the value is positive, the function has relative maxima at that point.”

4 0

2 years ago

Find the length of side a. 5 3 O A. 16 O B. 34 O c. 2 O D. 4

xxMikexx [17]

Answer:

Step-by-step explanation:

a= $\sqrt{c^{2} -b^{2} }$

$\sqrt{5^{2} -3^{2} } =$ 4

a=4

5 0

2 years ago