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artcher [175]
3 years ago
10

Smith drives his car and covers 450 miles in 10 hours.

Mathematics
2 answers:
Natali [406]3 years ago
8 0
450/10=540/x and than do cross multiply, 450x=5400 divide both side by 450 = 12 hours
ASHA 777 [7]3 years ago
7 0
450\ miles\ in\ 10\ hours\\\\
540\ miles\ in\ x\ hour\\\\making\ proportion:\\
450-10\\540-x\\\\cross\ multiplication\\\\
450=540*10\\\\
450x=5400\ \ \ \ \ | divide\ by\ 450\\\\
x=12\\\\
It\ will\ take\ 12\ hours.
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Which expression is equivalent to -0.25(16m + 12)?<br><br> PLEASE HELP
jok3333 [9.3K]

Answer:

-4m-3

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
The sum of 2/3 and twice a number is equal to 5/6 subtracted from three times a number​
strojnjashka [21]

Answer:

3÷2

Step-by-step explanation:

First let the required no. be 'x'.

By question,

(2÷3)+2x=3x-(5÷6)

or,(2+6x)÷3=(18x-5)÷6

or,2+6x=(18x-5)÷2

or,4+12x=18-5

or,x=9÷6

Therefore, x=3÷2

3 0
2 years ago
The mean survivial time after diagnosis for a certain disease is 15 years with a standard deviation of 5 years. Based on a parti
frutty [35]

Answer:

The time the patient expected to survive after diagnosis is 29 years.

Step-by-step explanation:

It is provided that the mean survival time after diagnosis for a certain disease is 15 years with a standard deviation of 5 years.

That is,

\mu=15\\\sigma=5

An individual's predicted survival time is <em>a</em> = 2.8 standard deviations beyond the mean.

Compute the time the patient expected to survive after diagnosis as follows:

X=\mu+a\sigma

    =15+(2.8\times 5)\\\\=15+14\\\\=29

Thus, the time the patient expected to survive after diagnosis is 29 years.

5 0
3 years ago
What is the volume of the cone with a height of 3ft and a radius of 4 ft in cubic ft
tino4ka555 [31]
The answer is 50.24 ft
4 0
3 years ago
8 + (-10) just confused lol
grin007 [14]
8+(-10) is like 10-8 except backwards so how i do some problems is like that and then add a negative sign; so say if i were doing 8+(-10), i would do 10-8 which equals 2 and then since 10 is bigger than 8 and it’s a negative number, i would put -2 as my answer
5 0
3 years ago
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