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2 years ago

Segment AB is shown on the graph.

Mathematics

1 answer:

sasho [114]2 years ago

7 0

Answer: D

Step-by-step explanation:

Plug in the ratio into the formula, so 2/2+3=2/5

Eliminate the first 2 options

Find the difference between x2 and x1

Find x2 and x1 by using the x-coordinates of the given points

I will use x1 as point a's x-value

x1=-3

x2=2

Altogether, you'll derive:

$(\frac{2}{5} )(2+3) -3$

This matches D.

C won't work because although C and D will work with x1 and x2, C doesn't split it into a 2:3 ratio.

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If the factors of a quadratic function are (x + 2) and (x − 9), what are the x-intercepts of the function?

Zielflug [23.3K]

Answer: D. (-2,0) and (9,0)

Step-by-step explanation:

When you equate the factors to 0 you get

(X+2) = 0

X = -2

(X-9) = 0

X= 9

Here the Y value is 0 as you find the factors of x when the Y value is 0.

So the answer is (-2,0) and (9,0)

8 0

3 years ago

Beaker A contains 1 liter which is 30 percent oil and the rest is vinegar, thoroughly mixed up. Beaker B contains 2 liters which

alekssr [168]

Answer:

1.25 liters of oil

Step-by-step explanation:

Volume in Beaker A = 1 L

Volume of Oil in Beaker A = 1*0.3 = 0.3 L

Volume of Vinegar in Beaker A = 1*0.7 = 0.7 L

Volume in Beaker B = 2 L

Volume of Oil in Beaker B = 2*0.4 = 0.8 L

Volume of Vinegar in Beaker B = 1*0.6 = 1.2 L

If half of the contents of B are poured into A and assuming a homogeneous mixture, the new volumes of oil (Voa) and vinegar (Vva) in beaker A are:

$V_{oa} = 0.3+\frac{0.8}{2} \\V_{oa} = 0.7 \\V_{va} = 0.7+\frac{1.2}{2} \\V_{va} = 1.3$

The amount of oil needed to be added to beaker A in order to produce a mixture which is 60 percent oil (Vomix) is given by:

$0.6*V_{total} = V_{oa} +V_{omix}\\0.6*(V_{va}+V_{oa} +V_{omix}) = V_{oa} +V_{omix}\\0.6*(1.3+0.7+V_{omix})=0.7+V_{omix}\\V_{omix}=\frac{0.5}{0.4} \\V_{omix}=1.25 \ L$

1.25 liters of oil are needed.

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3 years ago

Brad and Angelina can mow their yard together with two lawn mowers in 30 min. When brad works alone it takes him 45 min. How lon

Kisachek [45]

Answer:

Wouldn't it be 45 minutes as well?

Step-by-step explanation:

If you think about it in a real life scenario, if one person does the job and then another person does the same job at the same speed wouldn't it be the same time? But if its not i think it would be 15 minutes because 45-30 = 15

6 0

3 years ago

Look at the theater on First Ave, between Alder and Birch. If the corners of the theater are all right angles, is the theater a

insens350 [35]

Answer:

yes

Step-by-step explanation:

A parallelogram is a quadrilateral is whose angles are all right angles

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3 years ago

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2 years ago