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IrinaVladis [17]
2 years ago
8

What is the prime factor of 42

Mathematics
1 answer:
dsp732 years ago
8 0

Answer:

2 × 3 × 7

Step-by-step explanation:

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allsm [11]

Answer:

No more than ≥

Not under ≤

No less than ≤

maximum ≥

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4 0
3 years ago
Read 2 more answers
7 + r = 15<br><br>A() 22<br><br>B() 8<br><br>C() 105<br><br>D() 9
guajiro [1.7K]

Answer:

B

Step-by-step explanation:

7+r=15

-7    -7

r = 8

B.8

5 0
3 years ago
A rectangular garden has dimensions of 100 feet by 10 feet. Next season, the garden is decreased to 2/5 of its size. What is the
vladimir1956 [14]
The answer will be 40 feet because w = 10 feet’s so it will decrease into 100
7 0
3 years ago
Find a polynomial f(x) of degree 4 that has the following zeros. 7, −3, 0, −2
HACTEHA [7]

Answer:

x^4 - 2x^3 - 29x^2 - 42x

Step-by-step explanation:

Equal all the zeros to x then move them over.

x=7,x=-3,x=0,x=-2

x-7,x+3,x+0,x+2

Then multiply each factor

(x-7)(x+3)(x)(x+2)

x^4 - 2x^3 - 29x^2 - 42x

7 0
3 years ago
A certain prescription drug diminishes in the system at a rate of 25% per hour. If a person was administered 1450mg of the drug,
Helen [10]

9514 1404 393

Answer:

  • 459 mg
  • about 20 hours

Step-by-step explanation:

The decay factor is 1 -25% = 0.75 per hour, so the exponential equation can be written ...

  r(t) = 1450·0.75^t . . . . . milligrams remaining after t hours

__

a) After 4 hours, the amount remaining is ...

  r(4) = 1450·0.75^4 ≈ 458.79 . . . mg

About 459 mg will remain after 4 hours.

__

b) To find the time it takes before the amount remaining is less than 5 mg, we need to solve ...

  r(t) < 5

  1450·0.75^t < 5 . . . . use the function definition

  0.75^t < 5/1450 . . . . divide by 1450

  t·log(0.75) < log(1/290) . . . . . take logarithms (reduce fraction)

  t > log(1/290)/log(0.75) . . . . . divide by the (negative) coefficient of t

  t > 19.708

It will take about 20 hours for the amount of the drug remaining to be less than 5 mg.

7 0
2 years ago
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