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katen-ka-za [31]
3 years ago
14

Which equation represents exponential decay? A. y=100 (31)

Mathematics
1 answer:
Serjik [45]3 years ago
8 0

Answer:

C

Step-by-step explanation:

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Which of the following fractions is equivalent to 0.45? 4/5 2/5 9/20 9/200
exis [7]
45/100
Simplify the fraction by diving by the largest possible factor
45 divided by 5 = 9
100 divided by 5 = 20
9/20
9/20 = 0.45
4 0
4 years ago
could you possibly help me with this question? (its not part of a graded assignment, just a review from an online course of mine
Virty [35]

Let:

x = Pounds of walnuts in the mix.

Each pound of walnuts costs $0.80. thus x pounds of walnuts cost 0.8x dollars.

Each pound of cashews costs $1.25 and the mix will contain 8 pounds of cashews, so the cost is 8*$1.25 = $10

The total cost of the mix is, therefore: 0.8x + 10 dollars.

We are also given the pound of mix costs $1.00 and we have a total of 8 + x pounds, so the total cost of the mix is 1*(8 + x) dollars.

Equating both costs:

0.8x + 10 = 1*(8 + x)

Operating:

0.8x + 10 = 8 + x

Subtracting x and 10:

0.8x - x = 8 - 10

Simplifying:

-0.2x = -2

Dividing by -0.2:

x = -2/(-0.2)

x = 10

Answer: 10 pounds

8 0
1 year ago
Level 3<br> Solve: |x + 2|– 5 = -1
leonid [27]

Answer:

x=−6

x=2

Step-by-step explanation:

Combine like terms and use the properties of equality to get the variable on one side of the equal sign and the numbers on the other side. Remember to follow the order of operations.

∣x+2∣−5=−1

Add 5 to both sides of the equation.

∣x+2∣=4

Use the definition of absolute value.

x+2=4

x+2=−4

Subtract 2 from both sides of the equation.

x=2

x=−6

6 0
3 years ago
B) The perimeter of the shape is 25.71 cm
natita [175]

Answer:

r=4cm

Step-by-step explanation:

Having the radius to be involved, the shape is a circle.

<u>Circumference formula </u>

c=2\pi r

Finding radius, formula will be reversed.

r=\frac{25.72cm}{2\pi }

r=\frac{25.71cm}{2(3.142)}            r=\frac{25.71cm}{6.284}          r=4.09cm

4 0
3 years ago
An expression involves subtracting two numbers from a positive number. Under what circumstances with the value expression be neg
Svetach [21]
So (positive integer)-x-y can be negative
so to get a negative number as your result/answer, x+y must be greater than (positve integer) so  for example


lets say (positive integer)=8
x+y must be greater than 8 to make the equation negative so
example
x=5
y=4
x+y=9
8-9=-1
7 0
3 years ago
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