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Pani-rosa [81]
3 years ago
13

Write an equivalent expression 7 (d-4)

Mathematics
1 answer:
Mashutka [201]3 years ago
7 0

Answer:

7d - 28

Step-by-step explanation:

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Help pleaseee I need to answer this!!!
Bess [88]

Answer:

a is your answer

Step-by-step explanation:

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8 0
3 years ago
The fish population in a local stream is decreasing at a rate of 2.5% per year. The original population was 45,000. Write an exp
Julli [10]

Answer:

y=45000(1-0.03)^x

Step-by-step explanation:

1) the exponential decay formula is

y=c(1-r)^x

where c= starting amount

r=rate of change

x=time

so

y=45000(1-0.03)^x

y=45000-1350x

4 0
3 years ago
Evaluate x3 - x + x0 for x = -1.
8090 [49]
Substitute (-1)3-(-1)+(-1)0
multiply (-3)+1+0
simplify. -2

Final Answer: -2
3 0
2 years ago
8. How much energy does a 12 V battery in your car use to move 2.5 C through the electrical
I am Lyosha [343]

The energy required is 30 watts second.

In order to accomplish work and to produce heat and light, energy must be transferred to a body or to a physical system. Energy is the quantitative attribute that does this. Energy is a preserved resource; according to the rule of conservation of energy, energy can only be transformed from one form to another and cannot be created or eliminated.

The voltage of a battery is 12 V and;

The charge is 2.5C.

Now, energy can be defined as the product of voltage and charge.

Therefore,

E = V × C

E = 12 × 2.5

E = 30 watt second

Hence, the energy needed by the 12 V battery to move 2.5 C through the electrical circuit is 30 watts second.

Learn more about energy here:

brainly.com/question/13881533

#SPJ9

6 0
2 years ago
What is the volume of the cylinder?
Anna007 [38]

Answer:

  B.  2010.62 ft³

Step-by-step explanation:

The formula for the volume of a cylinder is ...

  V = πr²h . . . . . where r is the radius and h is the height

Filling in the numbers and doing the arithmetic, we get ...

  V = π(8 ft)²(10 ft) = 640π ft³ ≈ 2010.6193 ft³ ≈ 2010.62 ft³

The volume of the cylinder is about 2010.62 ft³.

7 0
3 years ago
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