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Radda [10]
3 years ago
10

HELP ASAP PLEASE!!! This is a written response

Mathematics
1 answer:
o-na [289]3 years ago
8 0

Answer:

Exponential decay.

Step-by-step explanation:

The magnitude of the base (also known as the "common factor") tells us whether a given exponential equation represents growth or decay.

Standard equation for expo. growth:  y = 3(b)^x, where b is the base.

If 0<b<1, we have expo. decay; if 1<b, we have expo. growth.

Thus, y = 3(0.5)^x represents expo. decay.

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Calculate the area of a circle whose diameter is 7cm.​
Tema [17]

Answer:

49π (or ~154) cm²

Step-by-step explanation:

A = area

A = πr²

r = radius

r = 7

A = π(7)²

= 49π

= 153.938040026 → 154 cm²

4 0
2 years ago
What is the factored form of 27 - 530?
fenix001 [56]

Answer:

1,2,3

Step-by-step explanation:

8 0
3 years ago
Two mechanics worked on a car. The first mechanic worked for 5
ArbitrLikvidat [17]

<u>Answer:</u>

$50 and $115

<u>Step-by-step explanation:</u>

We know that,

the sum of the two rates = $165 per hour

Let x and (165 - x) represent the $/hour of the 15hr and 5hr mechanics respectively.

Then combining their charges together to get:

(x*15)hour+(165-x)*5 hour=1325

Solving for x to get:

15x-5x+825=1325

10x=500

x=50

So the rate charged per hour by one mechanic is $50 and for the other mechanic = (165-50)= $115.

8 0
3 years ago
Simplify 2x2 - y for x = 3 and y = -2.<br><br> 10<br> 16<br> 20<br> 14
RoseWind [281]

Answer:

20

Step-by-step explanation:

Given

2x² - y ← substitute x = 3 and y = - 2 into the expression

= 2(3)² - (- 2)

= 2(9) + 2

= 18 + 2

= 20

6 0
2 years ago
Read 2 more answers
Granny Jane's famous cookie recipe calls for 6 cups of chocolate chips and makes 30 cookies. How many cups of chocolate chips wi
LenaWriter [7]

Answer:

c

Step-by-step explanation:

it is right

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2 years ago
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