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Crank
3 years ago
14

Express 4.009 x 10-3 in decimal form.

Mathematics
1 answer:
Shalnov [3]3 years ago
7 0

Answer:

0.004009

Step-by-step explanation:

I think that's the answer

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Coffee beans worth $ 10.50 $10.50 per pound are to be mixed with coffee beans worth $ 13.00 $13.00 per pound to make 50 50 pound
MAVERICK [17]

Answer: 30 pounds of coffee beans worth $10.50 per pound was used.

20 pounds of coffee beans worth $13.00 per pound was used.

Step-by-step explanation:

Let x represent the number of coffee beans worth $10.50 per pound that should be mixed.

Let y represent the number of coffee beans worth $13.00 per pound that should be mixed.

50 pounds of beans worth $11.50 per pound is to be made. The total cost of the mixture would be

50 × 11.5 = 575

This means that

10.5x + 13y = 575 - - - - - - - 1

The total number of pounds of each type of coffee used is 50. This means that

x + y = 50

Substituting x = 50 - y into equation 1, it becomes.

10.5(50 - y) + 13y = 575

525 - 10.5y + 13y = 575

- 10.5y + 13y = 575 - 525

2.5y = 50

y = 50/2.5 = 20

x = 50 - 20= 30

6 0
4 years ago
45% into a fraction simplest form
Aliun [14]
9/20

45% is 0.45. To switch into a fraction you do 45 over 100, simplified is 9/20.
5 0
3 years ago
Simplify x^2+3x-4/x+4 Show work and explain why x doesn’t equal -4
marin [14]
Take the numerator of the fraction and factor it out.

x^{2} + 3x - 4 = (x+4)(x-1)

Your fraction should now look like this:

\frac{(x+4)(x-1)}{(x+4)}

Because (x+4) is present in both the numerator and denominator, you can cross it out. You should be left with only (x-1) in the numerator.

x cannot equal -4, as if it is inputted in the denominator, -4 + 4 would equal 0. Dividing by 0 is impossible.

5 0
3 years ago
(2x-10) if angle v has a measurement of 48
Anton [14]
The equation would be written like this 2x-10=48. First add 10 to both sides so 2x-10+10=48+10 so simplified that is 2x=58. Now, divide both sides by 2 to get x by itself so it will look like this 2x/2=58/2 simplified that is x=29. I hope this helped you.
4 0
3 years ago
What is 13/6 as a mixed number
Vilka [71]
2 1/6 is the fraction in mixed numbers
5 0
3 years ago
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