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d1i1m1o1n [39]
3 years ago
11

Vera

Mathematics
2 answers:
Maurinko [17]3 years ago
6 0
2/5 of 100 would be 40%
1/9 an hour would be 1/9 x 40 % = 4.44% every hour
Total hours left would be 40% / 4.44%= 9.0009 = 9 hours
lidiya [134]3 years ago
4 0

Answer:

18/5 hours

Step-by-step explanation:

If Vera's phone has a battery life of 2/5 and it drains 1/9 every hour we can determine how much per hour her battery drains.

f the battery drains 1/9 per hour we know how much it drains per hour. To get the time is takes for 2/5 battery life to drain we can say 2/5 divided by 1/9.

=(2/5)/(1/9)=(2/5)*(9/1)

We have 5 and 1 at the bottom of the line  and 9 and 2 at the top of the line. We can simplify:

=18/5

It takes 18/5 hours for Vera's battery to last

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If anyone can help, thanks!
saul85 [17]

Note: This is a perfect application for equations of ratios.


50 40

------- = ------- and so 50x = 1200, or 5x = 120, or x = 24 (miles).

30 x

3 0
3 years ago
Please I need help
solong [7]

9514 1404 393

Answer:

  (c)  27x^11 +51x^7 +9x^6 -60x^5 +17x^2 -20

Step-by-step explanation:

As with many multiple-choice questions, you only need to look at something that will discriminate the correct answer from the wrong one.

The highest-degree product term is the product of the highest-degree terms in the factors:

  (3x^5)(9x^6) = 27x^11

This matches choice C only.

_____

In case you're interested in actually performing the rest of the multiplication, the distributive property applies.

  (1 +3x^5)(17x^2 +9x^6 -20)

  = 1(17x^2 +9x^6 -20) +3x^5(17x^2 +9x^6 -20)

  = 17x^2 +9x^6 -20 +51x^7 +27x^11 -60x^5

Writing these terms in order of decreasing exponents gives ...

  = 27x^11 +51x^7 +9x^6 -60x^5 +17x^2 -20

7 0
3 years ago
At a health club, 60% of the members are men and 40% of the members are women. The average age of the men is 32 years. The avera
Sedbober [7]

Answer:

30.4 percent. Hope this helps!

Step-by-step explanation:

3 0
3 years ago
If trapezoid T'U'V'W' represents trapezoid TUVW reflected over the y-axis, the ordered pair of W' is ___________. (Note: You mus
docker41 [41]

the answer is negative 7,2

4 0
3 years ago
you can buy a 48​-pound bag of flour for ​$11 or you can buy a​ 1-pound bag for  ​$0.49. Compare the per pound cost for the larg
Pavel [41]
$48÷$11=$4.36 repeated

while buying it the other way will save you way more money with $0.49 per pound

5 0
3 years ago
Read 2 more answers
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