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Deffense [45]
2 years ago
12

What is an equation of a line that passes through the point (3,-1) and has a slope of 2

Mathematics
1 answer:
kogti [31]2 years ago
8 0

Answer:

y=2x-7

Step-by-step explanation:

y-y1=m(x-x1)

y-(-1)=2(x-3)

y+1=2x-6

y=2x-6-1

y=2x-7

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Bryan needs 15 quarts of paint.he wants to buy both quarts and gallons . A quart cost $4.99 and a gallon 14.99?
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BRYAN would need to buy 3 gallons and 8 quarts witch would cost
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3 years ago
6 family members share 1/4 of a of chocolate fudge what fraction of a pound does each family member get if they share equally .
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Step-by-step explanation:

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2 years ago
Does anyone know how to do simple interest for 7th grade math? I need a tutorial or an example please, thanks. A question exampl
lions [1.4K]

Answer:

750/100 X 7 = 52.50

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Step-by-step explanation:

divide principal amount by 100 then multiply by interest percentage. this gave 52.50

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3 0
3 years ago
Please help me , at least do one and explain it please .
Len [333]

9514 1404 393

Answer:

  1. 113.0 cm²
  2. 2464.0 in²
  3. 95.0 ft²

Step-by-step explanation:

1. The area of a circle is given by the formula ...

  A = πr² . . . . . where r is the radius

The radius is shown as 6 cm, so the area is ...

  A = (3.14)(6 cm)² = 113.0 cm²

__

2. The radius is shown as 28 in. We note that this is a number divisible by 7, so we choose 22/7 for π.

  A = (22/7)(28 in)² = 2464 in² . . . . see comment

__

3. The radius is half the diameter, so is 11/2 = 5.5 ft. Then the area is ...

  A = (3.14)(5.5 ft)² = 95.0 ft²

_____

<em>Additional comment</em>

If you use a more exact value of π for problem 2, the area is 2463.0 in². If you use 3.14 as the value of π, the area rounds to 2461.8 in². For these values of pi (3.14 or 22/7), the answer is only good to about 3 significant digits. 2464 has more significant digits, so digits beyond the first 3 may be in error.

7 0
2 years ago
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