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Maru [420]
3 years ago
8

Jane has 6/7 of a yard of ribbon. She uses 3/4 of a yard to trim an ornament. how much ribbon is left?

Mathematics
2 answers:
attashe74 [19]3 years ago
4 0
2/28 but if u make it to the least number then it would be 1/14
Degger [83]3 years ago
3 0

Answer:

2/28

Step-by-step explanation:

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If F(x) = x-3, which of the following is the inverse of F(x)?
charle [14.2K]

Answer:

B

Step-by-step explanation:

let y = f(x) and rearrange making x the subject, that is

y = x - 3 ( add 3 to both sides )

y + 3 = x

change y back into terms of x, then

f^{-1}(x) = x + 3 → B

8 0
3 years ago
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ILL MARK BRAINLIEST<br><br> Simplify the expression below. 10−2⋅32+13
riadik2000 [5.3K]

Answer:

if you are multiplying the 2 and the 32, the answer would be -41

Step-by-step explanation:

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4 0
3 years ago
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A(n) (blank) is a triangle with at least two congruent sides<br> (fill in the blank please)
OlgaM077 [116]

Answer:

isosoles or equilateral

Step-by-step explanation:

Since it says at least it can equlateral but an equaltral triangle can also be called isosoles

6 0
3 years ago
A tank contains 90 kg of salt and 1000 L of water. A solution of a concentration 0.045 kg of salt per liter enters a tank at the
Andreyy89

Answer:

Step-by-step explanation:

concentration = amount of salt/solution

A) Initial concentration= 90/1000 = 0.09

Q = quantity of salt

Q(0) = 90 kg

Inflow rate = 8 l/min

Outflow rate = 8 l/min

Solution = 1000 L at any time t.

Salt inflow = 0.045 * 8 per minute

= 0.36 kg per minute

This is mixed and drains from the tank.

Outflow = \frac{Q(t)}{1000}

Thus rate of change of salt

Q'(t) = inflow - outflow = 0.36-\frac{Q(t)}{1000} \\=\frac{360-Q(t)}{1000}

Separate the variables and integrate

\frac{1000dQ}{360-q(t)} =dt\\-1000 ln |360-Q(t)| = t+C\\ln |360-Q(t)| = -0.001+C'\\360-Q(t) = Ae^{-0.001t} \\Q(t) = 360-Ae^{-0.001t}

Use the fact that Q(0) = 90

90 = 360-A

A = 270

So

Q(t) = 360-270e^{-0.001t}

B) Q(t) = 360-270e^-0.004  = 91.07784

C) When t approaches infinity, we get

Q(t) tends to 360

So concentration =360/1000 = 0.36

8 0
3 years ago
I really need your help
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