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Lemur [1.5K]
4 years ago
7

What is the first answer to the first question

Mathematics
2 answers:
prohojiy [21]4 years ago
7 0

Answer:

2.99

Step-by-step explanation:

Mars2501 [29]4 years ago
4 0
All you need to do is do $23 divide by %13. (Which you are dividing 0.13 23.
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A ∪ B= {a,b,c,d,e,f} and B= {b,d,f} then, which set presents set A?
jok3333 [9.3K]

Answer:

set A presents {a,c,e}

7 0
3 years ago
You have jogged 5 miles from the park at a rate of r miles per hour. on your way back to the park your average speed increases b
poizon [28]
1. If y<span>ou have jogged 5 miles from the park at a rate of r miles per hour, then the time you need to do this is \frac{5}{r} hours (S=v\cdot t, where S is distance, v-speed and t-time).
</span>
2. W<span>hen you run back to the park, your average speed increases by 1 mph and become r+1 mph.
</span>
3. I<span>t takes \frac{5}{r+1} hours to jog 5 miles back to the park</span>

4. T<span>he total jogging time T is \frac{5}{r} + \frac{5}{r+1} hours.</span>
<span />
5. If you jogged away from the park at an average speed of 4 miles per hour, then r+1=4 and r=3. The expression \frac{5}{r} + \frac{5}{r+1}will take look 
<span>\frac{5}{3} + \frac{5}{4}=\frac{5\cdot4+5\cdot 3}{12} =\frac{35}{12}=2.9hours.</span>



8 0
3 years ago
A Midwestern competition awarded 38 ribbons. The number of blue ribbons was 1 less than the number of white ribbons. The number
xxTIMURxx [149]
There are 12 white ribbons, 15 red ribbons, and 11 blue ribbons.

38=(w-1)+(w+3)+w
combine like terms
38=2+3w
subtract 2 from both sides
36=3w
divide 3 on both sides
12=w

w-1=b
12-1=b
11=b

w+3=r
12+3=r
15=r

Check Your Work
w+r+b=38
15+11+12=38
38=38
7 0
3 years ago
Suppose the demand for a certain item is given by:
Marysya12 [62]

Answer:

a. D'(p) = -10p - 6

b. There is a decrease of 96 units of demand for each dollar increase

Step-by-step explanation:

The demand function is:

D(p) = - 5p^2-6p+400

(a) The derivate of the demand function with respect to price gives us the rate of change of demand:

\frac{dD(p)}{dp}=D'(p) = -10p-6

(b) When p = $9, the rate of change of demand is:

D'(9) = -10*9-6\\D'(9) = -96\ \frac{units}{\$}

This means that, when p = $9,  there is a decrease of 96 units of demand for each dollar increase.

6 0
3 years ago
A function is _____ a relation.
Natalka [10]
The correct answer to your question is sometimes 
4 0
4 years ago
Read 2 more answers
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