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lyudmila [28]
3 years ago
5

I need help please?!!!

Mathematics
2 answers:
Natalija [7]3 years ago
5 0

No it is not a solution!

Rina8888 [55]3 years ago
4 0

Answer:

No

Step-by-step explanation:

To find out if the ordered pair is a solution, just plug x and y into the equation. Is 5(1) + (3) equal to or less than -3? No, it equals 8, which is greater than -3. So the answer is No.

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Latanya leaves her house at 12:30 p.M. And bikes at 12 mi/h to Marta's house. She stays at Marta's house for 90 minute. Both gir
Llana [10]

Answer:

Marta's house is 3.10 miles from Latanya's house

Step-by-step explanation:

* Lets explain how to solve the problem

- Latanya leaves her house at 12:30 p.M.

- She bikes at 12 mi/hr to Marta's house

- She stays at Marta's house for 90 minute

- Both girls walk back to latanya's house at 2.5 mi/h

- They arrive at latanya's house at 3:30 p.M.

- We need to know how far is Marta's house from latanya's house

∵ Latanya starts her trip at 12:30 p.M.

∵ She returns her home at 3:30 p.M.

∴ The time of her trip is  → 3:30 - 12:30 = 3 hours

- But she stays at at Marta's house for 90 minutes

∵ 1 hour = 60 minutes

∴ 90 minutes = 90 ÷ 60 = 1.5 hours

∴ The time from her house to Marta's house and from Marta's house

    to her house is → 3 - 1.5 = 1.5 hours

- Assume that the distance from her house to Marta's house is d

  and the time from her house to Marta's house is t_{1},

  the time from Marta's house to her house is t_{2}

∵ Latanya bikes at 12 mi/h to Marta's house

∵ Distance = speed × time

∴ d = 12 × t_{1}

∵ Both girls walk back to latanya's house at 2.5 mi/h

∴ d = 2.5 × t_{2}

- Equate the two expressions of d

∴ 12 t_{1} = 2.5 t_{2} ⇒ (1)

∵ t_{1} + t_{2} = 1.5

- Subtract t_{1} from both sides

∴ t_{2} = 1.5 - t_{1} ⇒ (2)

- Substitute equation (2) in equation (1)

∴ 12 t_{1} = 2.5(1.5 - t_{1})

∴ 12 t_{1} = 3.75 - 2.5t_{1}

- Add 2.5 t_{1} to both sides

∴ 14.5 t_{1} = 3.75

- Divide both sides by 14.5

∴ t_{1} = \frac{15}{58} hour

∴ She spends 15/58 hour to bike to Marta's house

- Lets find d

∵ d = 12 t_{1}

∴ d = 12*\frac{15}{58}=3.10 miles

* <em>Marta's house is 3.10 miles from Latanya's house</em>

6 0
3 years ago
Your family of 5 went to the Chinese buffet. The cost for each person was $8.95. The sales tax was
vampirchik [111]

Answer:

9.93

Step-by-step explanation:

Just add your tax to your price.

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3 years ago
Find the length of GH.
Yanka [14]

Answer:

length ofGH

Step-by-step explanation:

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4 0
3 years ago
Read 2 more answers
What is 1 /7 as a decimal rounded to 3 decimal places?
Nostrana [21]

Answer:

0.143

Step-by-step explanation:

You need to convert 1/7 to have a denominator of either 100 or 10. We can do 100.

1/7 = ?/100

then you need to divide 100/7 to find the scale factor which in this case is 14.286

then you can insert it into the equation

1/7 = 1 * 14.286/100

you end up with

14.286/100

then you can dived the two

0.14286 is what you end up with

but since it says rounded to the 3rd decimal place you go to the 3rd which is 2.

To round it you look at the 4th number which is 8.

<em>5 and above give it a shove up</em>

So now its 0.143

Hope this helped :)

7 0
3 years ago
What is the ratio of the sector area to the area of the
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Answer: 1/5

Step-by-step explanation: l

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3 years ago
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