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Sergio [31]
3 years ago
7

Assume that y varies directly as x. If y = 3, when x = 15, find the value of y when x = 75. A) 3 B) 15 C) 30 D) 45

Mathematics
2 answers:
Leni [432]3 years ago
8 0

Answer:

Step-by-step explanation:

Answer:y=15

 3      y

___=___

15    75

cross multiply

15y=225

divide both sides by 15

y=15

konstantin123 [22]3 years ago
6 0

Answer:

y=15 B

Step-by-step explanation:

First divide 15 from 75, which equals 5.  Then multiply 3 by 5.

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Andrew [12]

There are (A) 2.7 bacterias initially.

<h3>What is a function?</h3>
  • A function is an expression that establishes the relationship between the dependent and independent variables.
  • A function from a set X to a set Y allocates exactly one element of Y to each element of X.
  • The set X is known as the function's domain, while the set Y is known as the function's codomain.
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To find the number of bacteria:

  • The graph shows that the function follows an exponential curve, and the starting point is at ( 0,2.7 ).
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Therefore, there are (A) 2.7 bacterias initially.

Know more about functions here:

brainly.com/question/25638609

#SPJ4

The correct question is given below:
The growth of a strain of bacteria can be modeled by

the function graphed, where the x-values are the time

in seconds and the y-values are the number of

bacteria. How many bacteria are there initially?

(A) 2.7

(B) 2.8

(C) 4

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2 years ago
3×-7 equivalent expressions A. -21 B. 4 C. -4 D. 21
USPshnik [31]

Answer:

-21

Step-by-step explanation:

3x7=21 and a negative x a positive is always negative

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