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GuDViN [60]
3 years ago
7

What is the factored form of fx= 2x2+ 6x-8

Mathematics
1 answer:
____ [38]3 years ago
8 0
2x^2+6x-8  the factors j and k will be the two values that satisfy two conditions...

jk=ac=-16 and j+k=b=6 so j and k must be 8 and -2

2x^2-2x+8x-8

2x(x-1)+8(x-1)

(2x+8)(x-1)

2(x+4)(x-1)
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A photo originally measuring 11 inches by 9 inches needs to be enlarged to a size of 55 by 45 inches. Find the scale factor of t
mariarad [96]

Answer:

scale factor = 5

Step-by-step explanation:

To determine the scale factor calculate the ratio of corresponding sides of the enlargement to the original, that is

scale factor = \frac{55}{11} = \frac{45}{9} = 5

8 0
3 years ago
You purchase 5 pounds of apples and 2 pounds of oranges for $9.Your friend purchases 5 pounds of apples and 6 pounds of oranges
babymother [125]

Answer:

x = 1 and y = 2

Step-by-step explanation:

Let apples are represented by x

and let oranges are represented by y

You purchase 5 pounds of apples and 2 pounds of oranges for $9. This line in equation format can be written as:

5x + 2y = 9

Your friend purchases 5 pounds of apples and 6 pounds of oranges for $17.

This line in equation format can be written as:

5x + 6y = 17

Now we have two equations:

5x + 2y = 9 -> eq (i)

5x + 6y = 17 -> eq(ii)

We can solve these equations to find the value of x and y.

Subtracting eq(i) from eq(ii)

5x + 6y = 17

5x + 2y = 9

-     -         -

_________

0+4y= 8

=> 4y = 8

y= 8/4

y = 2

Now, putting value of y in eq (i)

5x + 2y = 9

5x +2(2) = 9

5x +4 = 9

5x = 9-4

5x = 5

x = 1

so, x = 1 and y = 2

8 0
3 years ago
Harry just moved into his new house he had 318 boxes to unpack he unpacked 2/6 of the boxes in the first week he unpacked 1/2 of
beks73 [17]
So 

2/6 of 318=106

so 106-1/2 or 106/2=53 

So he has 53 boxes left
5 0
3 years ago
Find the y intercept of the line above.
NISA [10]
The y-intercept is (0, 2), because it's the spot where the line crosses the y-axis. The other point showed on the graph is the x-intercept..
6 0
3 years ago
0. Kevin needs to buy shrubs for his yard. Six shrubs at the nursery cost $72.00. At the garden
Elanso [62]

Answer:

72÷6=12

so at the nursery it cost $12 per shrub

66÷6=11

so at the store it cost $11 per shrub

so if you buy 21 shrubs from the nursery it will cost: 12×21=$252

but if you buy 21 shrubs from the store it only cost: 11×21=$231

$252-$231=$21

7 0
3 years ago
Read 2 more answers
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