3 years ago

Can someone help me pls

Mathematics

1 answer:

fomenos3 years ago

5 0

1.would be a right triangle because that little square and the lines connected to it form a right angle

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whats the circumference of a circle with radius of 7 inches round your answer to the nearest inch a. 44 inches b. 41 inches c. 1

ivolga24 [154]

Circumference of a cirlce=2πr
Data:
r=7 in

Circumference=2(3.141592....)(7 in)=43.9822...in≈44 in.

Answer: 44 inches.

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3 years ago

A machine fills 80 containers of cookies in 20 minutes. At the same rate, how many containers of cookies could the machine fill

Murrr4er [49]

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Step-by-step explanation:

You would need to find how many containers of cookies they make in a hour which is 240 so than 240 times 8 is 1,920

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2 years ago

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Which expression has a value that is less than the base of that expression?

babymother [125]

2 to the third power is 6

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3 years ago

Frank must choose a number between 67 and 113 that is a multiple of 3,4 and 9 . Write all the numbers that he could choose.

svet-max [94.6K]

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2 years ago

What two numbers multiply to -126 and add up to -65

Airida [17]

Xy = -126
x + y = -65

$xy = -126$
$\frac{xy}{x} = \frac{-126}{x}$
$y = \frac{-126}{x}$

$x + y = -65$
$x + \frac{-126}{x} = -65$
$\frac{x^{2}}{x} + \frac{-126}{x} = -65$
$\frac{x^{2} - 126}{x} = -65$
$-65x = x^{2} - 126$
$0 = x^{2} + 65x - 126$
$x = \frac{-(65) \+ \sqrt{(65)^{2} - 4(1)(-126)}}{2(1)}$
$x = \frac{-65 \± \sqrt{4225 + 504}}{2}$
$x = \frac{-65 \± \sqrt{4729}}{2}$
$x = \frac{-65 \± 68.8}{2}$
$x = \frac{-65 + 68.8}{2}$ $or$ $x = \frac{-65 - 68.8}{2}$
$x = \frac{3.8}{2}$ $or$ $x = \frac{-133.8}{2}$
$x = 1.9$ $or$ $x = -66.9$

x + y = -65
  1.9 + y = -65
- 1.9   - 1.9
y = -66.9
  (x, y) = (1.9, -66.9)

or

  x + y = -65
  -66.9 + y = -65
+ 66.9 + 66.9
y = 1.9
  (x, y) = (-66.9, 1.9)

The two numbers that add up to -65 and can multiply to -126 are the numbers -66.9 and 1.9.

3 0

3 years ago