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Leokris [45]
3 years ago
5

Which type of factoring is used to factor the following expression: 2x^2 + 7x- 30

Mathematics
1 answer:
svetlana [45]3 years ago
7 0

Answer:

 (2x - 5) • (x + 6)

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The perimeter of a standard football field,including end zone is 1040 feet. if the field is 360 feet long,how wide is the field
ozzi
360 * 2=720
1049-720=320
320/2=110 so the answer is it is 110 ft wide

4 0
3 years ago
The length of a rectangle is 3 inches more than the width. The area is 10 square inches. Find the dimensions
mr_godi [17]

Answer:

Width = 2

Length = 5

Step-by-step explanation:

let A be the area of the rectangle

   L be the length of the rectangle

   w be the width of the rectangle

<u><em>Formula</em></u>: ‘<u><em>area of a rectangle</em></u>’

A = L × w

…………………………………………………

A = L × w

⇔ 10 = (w + 3) × w

⇔ 10 = w² + 3w

⇔ w² + 3w - 10 = 0  

<u><em>Solving the quadratic equation</em></u> w² + 3w - 10 =  0 :

Δ = 3² - 4(1)(-10) = 9 - (-40) = 9 + 40 = 49

then √Δ = 7

\Longrightarrow w=\frac{-b+\sqrt{\Delta } }{2a} =\frac{-3+7}{2} =2

  or\ w=\frac{-b-\sqrt{\Delta } }{2a} =\frac{-3-7}{2} =-5

-5 is not valid ,because w represents the width

which must be a positive number

Then  w = 2

<u><em>Conclusion</em></u>:

Width = 2

Length = 2 + 3 = 5

6 0
1 year ago
Which ratio is equivalent to 8:6
dybincka [34]

Answer:

4:3

Step-by-step explanation:

You divide 8 and 6 by 2 to simplify it

8 0
3 years ago
F(x) = x2 g(x) = (x+5)2 - 9
monitta
To move a graph c units to the left, add c to every x
to move a graph c units down, subtract c from whole function

so

f(x)=x²
move 5 to the left
f(x)=(x+5)²
move 9 down
f(x)=(x+5)²-9



5 left and 9 down

A is answer
7 0
3 years ago
How do you know when to add or subtract when doing the distributive property​
Rainbow [258]

you do them at the end, if it's only 9+10 then just add them.

4 \times 6 + 2

multiplecation is first, then addition. meaning the answer is 26

7 0
3 years ago
Read 2 more answers
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