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nadezda [96]
2 years ago
15

(3.125) + (-3.9) - (2.46)

Mathematics
1 answer:
lara31 [8.8K]2 years ago
5 0

Answer:

<h2><u><em>-3.235</em></u></h2>

Step-by-step explanation:

First, let's start by removing the parentheses and simplifying the expression.

3.125 + - 3.9 - 2.46

Adding a negative number is the same as subtracting it, so we can remove the + sign.

3.125 - 3.9 - 2.46

From there, we can do simple subtraction and get:

-3.235

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Step2247 [10]

Answer:

it is (3/8)( -5/7)(-1/4)

if ot it should be the one that is all postitive

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3 years ago
The amount of bacteria in a petri dish increases at a rate proportional to the amount present. At time t=0, the amount of bacter
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Answer:

Step-by-step explanation:

Formula to be used is N=N0e^(kt)

N0 - amount of bacteria at time 0, which is 10g

t=2, 30g

30 = 10*e^(k*2)

3 = e^(2k)

2k = ln3

k = 0.5ln3

At t=6:

N = 10*e^(0.5ln3*6)

N = 10e^(3ln3)

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6 0
3 years ago
Pete works as a door to door vacuum salesman and earns a base salary of $400 per week plus 8% commission on
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Answer:

$516.48

Step-by-step explanation:

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Sales commission is the percentage of the value of the sale that Pete makes which is added to his base salary.

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5 0
3 years ago
Could someone help me
Mekhanik [1.2K]

Answer:

the third one and the last one is correct

Step-by-step explanation:

we already know the second one is wrong because of it's set up.

just replace the points (-1,7) into each equation. if it doesn't work then move on to the next one. if it does work, then use that same equation except this time to the coordinates (2,4)

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The graph represents this piecewise function
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