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4 years ago

I need help for number 48

Mathematics

1 answer:

erastova [34]4 years ago

6 0

The answer is D.10/1 (10:1)

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Which of the following functions is the inverse of the function {(1,2),(3,4),(6,8)} A.{(6,8),(3,4),(1,2) B.{(2,1),(4,3),(1,2)} C

slega [8]

C. that was so easy yo

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3 years ago

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This pattern follows the add 10 rule. What other features do you observe? 7, 17, 27, 37, 47, 57

zzz [600]

Answer:

Only odd numbers are existed.

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3 years ago

A researcher is selecting lab rats for her experiment. She assigns each rat a number and picks numbers out of a hat while blindf

laiz [17]

Answer: $\dfrac{76}{89}$

Step-by-step explanation:

The pool of rats from which the researcher is drawing participants is composed of the following:

23 male albino rats

21 male spotted rats

35 female albino rats

11 female spotted rats

Total rats = 23+21+35+11 =90

$P(male\ albino)=\dfrac{23}{90}$

After drawing first rat , total rats remained = 89

$P(\text{either a female albino rat or a male spotted rat})=\dfrac{35+21}{89}=\dfrac{76}{89}$

The probability of choosing a male albino rat and then either a female albino rat or a male spotted rat = $\dfrac{76}{89}$

7 0

3 years ago

Caitlin bought 6 cookies for a total of $10. At this rate, what is the cost of 9 cookies?

ozzi

Answer:

15$

Step-by-step explanation:

cost of 1 cookie = 10/6

cost of 9 cookies = 9* 10/6 = $15

7 0

4 years ago

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The point (5,4) lies on a circle. What is the length of the radius of

Flura [38]

Answer:

$\large\boxed{r=2\sqrt2}$

Step-by-step explanation:

The radius (r) length is equal to the distance between the center of the circle and the point on the circle.

The formula of a distance:

$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

Substitute the coordinates of the given points (5, 4) and (3, 2):

$r=\sqrt{(3-5)^2+(2-4)^2}\\\\r=\sqrt{(-2)^2+(-2)^2}\\\\r=\sqrt{4+4}\\\\r=\sqrt{(4)(2)}\qquad\text{use}\ \sqrt{ab}=\sqrt{a}\cdot\sqrt{b}\\\\r=\sqrt4\cdot\sqrt2\\\\\boxed{r=2\sqrt2}$

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3 years ago