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earnstyle [38]
3 years ago
10

(tap the picture in order to see the hole thing) guys i really need help plz its so annoying that i cant answer it

Mathematics
1 answer:
vlabodo [156]3 years ago
6 0
David's total income is ($8/hr)x + ($11/hr)y.

This problem requires us to write and solve an inequality:

8x + 11(15)<$200

Solving for x:     8x < $200-$165, or 8x < $35.  Strictly speaking, x = 4.375 hrs, but if we assume that David must work an integer # of hours, then x=5 full hours.
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Out of the 301 seniors, 117 are boys. What is the ratio of boys to the total number of seniors?
Deffense [45]

301 , 117

=117 : 301

because they are telling to tell ratio of boys to the ratio of total seniors

6 0
3 years ago
Read 2 more answers
If f(x) =7x+5/3-x, then show that fof power -1(x) is an identity function ​
Irina-Kira [14]

If f(X)= 7x +5/3 - x =6x +5/3

y= 6x +5/3

6x= y-5/3

f^-1(y)=x=(y-5/3)/6

So we can write

f(f^-1(y))= f((y-5/3)/6) = 6 (y-5/3)/6 +5/3= y-5/3+5/3= y

The same result can be obtained for f^-1(f(x))=x

If the function is f(x)= 7x +5/(3-x) then it is not invertible since it is not injective (pictures)

4 0
3 years ago
Pentagon with a side of 6 ft
TEA [102]
I think it would be 56.
3 0
3 years ago
NEED HELP ASAP.....At the 2012 Summer Olympic Games in London, in the Men's Shot Put qualifying round, the distances ranged from
jeka57 [31]

Answer:

About 6 athletes.

Step-by-step explanation:

We are concerned only with the percent of athletes that are above one standard deviation.

Between one standard deviation and two standard deviations, there is 13.6% of the athletes.

From 2 to 3, there is 2.1%. Above 3, there is 0.2%.

The sum of those percentages is 15.9% of 40 = 0.159 · 40 = 6.36 or about 6 athletes.

Hope this helps.

6 0
4 years ago
-22m-13n<br><br>i need to factorise this
sukhopar [10]
1 22. 1 13
11 22. 13 13
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answer 1 (-22m -13n)
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