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iren2701 [21]
3 years ago
11

I need help please and thank you

Mathematics
1 answer:
barxatty [35]3 years ago
3 0

Answer:

I got 3and3/20....Hope that helps

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Tony bikes 7 miles in one hour perdict how far he will bike in 4 hours
rewona [7]
If he is biking at the same rate he will bike 28 miles after 4 hours.

7*4=28

I hope this helps c:

3 0
4 years ago
Two different antibiotics can be used to treat an infection. Treatment with antibiotic 1 is known to be successful 80% of the ti
Deffense [45]

Answer: Option D

D. $108

Step-by-step explanation:

We must calculate the expected cost per patient to use treatment method B.

The expected cost for a discrete random variable x is:

C = \sum x_i * P (x_i)

Where x_i is the cost associated with the probability P(x_i)

In this case, the random variable x is represented by the cost of each treatment.

For treatment B there is a possibility that antibiotic 2 works, in that case the cost x would be $ 100 and P (x) = 0.9

There is also the possibility that it does not work, in this case the cost x would be $180 and the probability P (x) = 0.10

The expected cost  is:

C =\$100*0.9 + \$180*0.1\\\\C = \$108

3 0
4 years ago
A car can travel 396 miles on 22 gallons of gasoline.how much gasoline will it need to go 468 miles?
STatiana [176]

Answer:

396 miles / 22 gallons = 18 miles per gallon

468 miles / 18 miles = 26 gallons of gasoline

What I did is I took the number of miles and divided it by the number of gallons to find how many gallons of gasoline were used per mile. Then I took that number of miles and divided 468 by it because that's the number of gallons we are trying to find. We ended up with 26 gallons of gasoline for 468 miles.

7 0
3 years ago
Read 2 more answers
Rectangle LMNP has a length of 3x+5 meters and a width of 4x-3 meters. What is its perimeter? PART B: The perimeter of rectangle
frez [133]
Part A: 
(3x+5)+(3x+5)+(4x-3)+(4x-3)=p
3x+3x+4x+4x=14x
5+5+-3+-3=4
14x+4=p
     -4    -4
14x=p-4
----  -----
14    14

x=1/4 p + -2/7

14(1/4 p +-2/7) +4=p
14(0.25p + 0.28571428571)+4=p
3.5 + 3.99999999994 + 4=p
11.4999999999=p

This may not help by no harm in trying.

4 0
3 years ago
Someone help me plsss
Vesnalui [34]

Answer:

69.5 and 70.5

Step-by-step explanation:

consecutive numbers mean they are one up from the other

- e.g. 2 and 3,

- 15 and 16

if the first one is x, we can write the second consecutive number as x + 1

The info tells us the sum of these two numbers is 140, so we can write an equation and solve for x.

x + (x + 1) = 140

2x + 1 = 140

2x = 139

x = 139/2 = 69.5

(now we find the next number)

69.5 + 1 = 70.5

3 0
3 years ago
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