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stiv31 [10]
2 years ago
6

Ralph is 3 times as old as Sara. In 6 years, Ralph will be only twice as old as Sara will be then. Find Ralph's age now. If x re

presents Sarah's age now, which of the following expressions represents Ralph's age in six years? 2x 6x 2x + 6 3x + 6
Mathematics
2 answers:
inessss [21]2 years ago
4 0
<span>ralph = r sara = s ralph is TODAY, 3 times older, so if sara is "s" old, ralph is 3s r = 3s in 6 years, ralph will be 2 times as old as sara THEN, in 6 years ralph will be TODAY's age plus 6, so r + 6 so if sara is "s" old, r+ 6 = 2s r + 6 = 2s</span>
Inga [223]2 years ago
4 0

Bro What Kind Of Answer Is That Because I Don't Understand

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What is the rate of change of the volume of the cylinder at that instance (in cubic kilometers per second)?
Kay [80]

Answer:

hello your question is incomplete attached below is the complete question

answer : -2400 π

Step-by-step explanation:

dr/dt = -12 km/s

h = 2.5 km

r = 40 km at some instant

hence the rate of change of Volume of cylinder at that instance

= dv / dt = d(\pi r^h ) / dt  

              = \pi h\frac{d(r^2)}{dt}  = -\pi h *2r *dr/dt

hence ; dv / dt = -2400 π

3 0
2 years ago
Jonah is going to the store to buy candles for his igloo. Small candles cost $3.50 and large candles cost $5.00. He needs to buy
Semmy [17]

Answer:

x+y\geq 20

3.50x+5.00y\leq 80

Step-by-step explanation:

Let x represent number of small candles and y represent number of large candles.

We have been given that Jonah needs to buy at least 20 candles. This means number of small and large candles should be greater than or equal to 20. We can represent this information in an inequality as:

x+y\geq 20...(1)

We are also told that small candles cost $3.50, so cost of x small candles would be 3.50x.

Since large candles cost $5.00, so cost of y large candles would be 5.00y.

We are told that Jonah cannot spend more than $80, this means cost of x small candles and y large candles should be less than or equal to $80. We can represent this information in an inequality as:

3.50x+5.00y\geq 80

Therefore, our required system of inequalities would be:

x+y\geq 20

3.50x+5.00y\leq 80

4 0
2 years ago
Given that (1,-8) is on the graph of f(x), find the corresponding point for the function 1/2f(x). PLEASE HELP ME. IM BEGGING YOU
scoray [572]

Answer:

The corresponding point is (1,-4)

Step-by-step explanation:

we know that

The point (1,-8) is on the graph of f(x)

so

that means

For x=1, f(1)=-8

therefore

For the function 1/2f(x)

For x=1, 1/2f(1)=-8/2=-4

The corresponding point is (1,-4)

3 0
2 years ago
Find the solutions of the congruence 12x2 + 25x ≡ 10 (mod 11). [Hint: Show the congruence is equivalence to the congruence 12x2
Vlada [557]

Answer:23.89x67

Step-by-step explanation:

5 0
3 years ago
What is 1/8 divided by 2
slavikrds [6]
When dividing 1/8 by 2
we have to first take the reciprocal of 2 
reciprocal is when the numerator and denominator are exchanged
2 when written as a fraction is \frac{2}{1}
we need to find the reciprocal of \frac{2}{1} which is \frac{1}{2}
then 
\frac{1}{2} of \frac{1}{8}
when 'of' function is used it means to multiply the 2 fractions 
when multiplying fractions multiply the numerators by numerators and multiply denominators by denominators 
is \frac{1}{2} * \frac{1}{8} =  \frac{1}{16}
answer is \frac{1}{16}

4 0
3 years ago
Read 2 more answers
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