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ValentinkaMS [17]
3 years ago
11

X^2 + 11x + 28 = 0 please help gotta make this longer

Mathematics
1 answer:
RideAnS [48]3 years ago
5 0

Answer:

x= -7       x = -4

Step-by-step explanation:

x^2 + 11x + 28 = 0

What two numbers multiply to 28 and add to 11

7*4 = 28

7+4 =11

(x+7) (x+4) =0

Using the zero product property

x+7 =0   x+4 =0

x= -7       x = -4

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Please help!!!!!!! im so confused lol
pav-90 [236]

Answer:

a : c = 7 : 10

Step-by-step explanation:

The two ratios (a : b and b : c) both have b in common, so to work out what a : c is, we can use b to 'bridge' the two ratios together.

However, in a : b, b is 4. But in b : c, b is 2. We need to make sure b is the same in both ratios before we can combine the ratios together. The easiest way to do this is to multiply b : c by 2 to get b : c = 4 : 10. Now b is 4 in both ratios.

So now, we can combine the two ratios together to get a : b : c = 7 : 4 : 10. Since we only want a : c though, we can just drop the b and get a : c = 7 : 10. No simplifying is necessary since the ratio is already in its simplest form.

Hope that helps! :)

5 0
3 years ago
What type of function can be used to model the scenario?
11111nata11111 [884]

Answer:

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Step-by-step explanation:

7 0
3 years ago
In the right triangle shown, A= 30° and AB = 8.
zloy xaker [14]

Answer:

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Step-by-step explanation:

The picture of the question in the attached figure

we know that

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BC=(\frac{1}{2})(8)

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4 0
3 years ago
A rope is 66 feet long. It is cut into two pieces such that one piece is half the length of the other. What is the length of the
dedylja [7]
So if one bit of the length, is half the size of the other bit then we can make the following equation, for x being the length of rope:

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7 0
3 years ago
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Your answer is.............B. Negative.
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