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3 years ago

8

3 distance questions:

1 answer:

zhuklara [117]3 years ago

7 0

This one actually made me think. I like your teacher.

2h 30min (2.5)×30mph=75m
1h 30min (1.5)x50mph=75m

1 hour longer when driving to Arkansas

______________________________

11h 12min (11.2)×300mph=3360m
4h 48min (4.8)×700mph=3360m

11h 12min from NY to Paris.

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Can someone please do this substitution method question with the working out.

timurjin [86]

Answer:

Step-by-step explanation:

$T = \frac{1}{2}m^{2}+2m - 4\\\\T = 2m + 4\\\\\frac{1}{2}m^{2}+2m - 4 = 2m + 4\\\\\frac{1}{2}m^{2}+2m - 4 - 2m - 4 = 0$

Combine like terms

$\frac{1}{2}m^{2}+2m - 2m - 4 - 4 = 0\\\\\frac{1}{2}m^{2} - 8 = 0\\\\\frac{1}{2}m^{2} =8\\\\m^{2} = 8*2\\\\m^{2} = 16\\\\m = \sqrt{16}$

m = ± 4

6 0

3 years ago

Find the measure of the angle indicated

Grace [21]

Answer:

86

Step-by-step explanation:

y + 28 + 58 = 180

y + 86 = 180

y = 180 - 86

y = 94

x + y = 180

x + 94 = 180

x = 180 - 94

x = 86

6 0

3 years ago

What is the m for this slope?

Lerok [7]

Answer: -1/4

Step-by-step explanation:

Slope=rise/run

We rise 1 up

We run 4 to the left (making it negative)

8 0

3 years ago

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23 students are making smiley faces from macaroni noodles. The teacher got a box of macaroni’s that has 276

drek231 [11]

Answer:

12 noodles

Step-by-step explanation:

If each child is given x amount of noodles, and there are 276 noodles to split among 23 students, set up the equation as seen below:

276÷23=12

276 noodles divided by 23 children = 12 noodles per child.

3 0

3 years ago

What is the domain of the given function?

EleoNora [17]

Answer:

domain is equal to x. therefore, the domain is all of the x values. x = -6,-1,0,3

Step-by-step explanation:

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3 years ago

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