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Setler79 [48]
3 years ago
8

The value of y varies directly with x. If x = 2, then y = 10. What is the value of x when y = 100? *​

Mathematics
1 answer:
Fynjy0 [20]3 years ago
8 0

Answer:

20

Step-by-step explanation:

y=kx

X=2 & y= 10

10=2k

k=5

when y=100

100=5x

X=20

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Help help help answer
Mars2501 [29]

Answer:

(2,3,4,5)

Step-by-step explanation:

The domain are all real number at x-axis

So the answer is option b (2,3,4,5)

3 0
3 years ago
A DVD player that normally cost $160 is on sale for 70% of its normal price.What is the sale price of the DVD player.
maw [93]
160 $ = 100%
     x $ = 70%


100 x = 11200
     x =  112


160,00 - 112,00 =  48,00$


7 0
3 years ago
a bag contains 10 white balls and 14 red balls.a ball is taken out of the bag,what is the probability that it is a red ball​
Anit [1.1K]

Answer:

7/12

Step-by-step explanation:

Total = 10W+14R

probability of red = R/total

10+14 = 24 so total = 24

R = 14

14/24

reduce (divide by two on the top and bottom)

14/2

-------

24/2

= 7/12

3 0
3 years ago
If m∠1 equals (4x + 2) and m∠3 equals (5x − 25), what is the value of x?
vitfil [10]

Step-by-step explanation: the answer is x = 1/2

7 0
3 years ago
Someone please HELP!?
jeka94
 A negative exponent just means that the base is on the wrong side of the fraction line, so you need to flip the base to the other side.

For example

x^{-2}=\frac{1}{x^2}

or

( \frac{2}{5} )^{-4}=( \frac{5}{2} )^4

***************************************
(8r^{-5})^{-3}

(8* \frac{1}{r^5} )^{-3} \\\\( \frac{8}{r^5} )^{-3}
 \\  \\ ( \frac{r^5}{8} )^3
\\\\ \mathrm{Apply\:exponent\:rule}:\quad *\left(\frac{a}{b}\right)^c=\frac{a^c}{b^c} \ \ \ \ \ \ \ \ \ \ \ \   *(a^b)^c=a^{bc}
 \\\\( \frac{r^{15}}{8^3} )
\\\\( \frac{r^{15}}{512} )

The answer is "D"


7 0
3 years ago
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