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const2013 [10]
2 years ago
11

Please answer this question asap

Mathematics
1 answer:
Aneli [31]2 years ago
6 0
The correct answer is A.

h is the independent variable. The rate at which she is hiking is 2.5 km/hr. The dependent variable, h(x), is equal to 12 for a certain h.

h(x) = 2.5h + 4
12 = 2.5h + 4
8 = 2.5h
h=3.2 hours

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At Jefferson Middle School, eighty-two students were asked which sports they plan to participate in for the coming year. Twenty
Lana71 [14]
I believe it would be 20
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3 years ago
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In a recent baseball season, Ron was hit by pitches 21 times in 602 plate appearances during the regular season. Assume that the
ozzi

Answer:

the probability that Ron will get hit by a pitch exactly once is 36.71%

Step-by-step explanation:

The random variable X= number of times Ron is hits by pitches in 23 plate appearances  follows ,a binomial distribution. Where

P(X=x) = n!/(x!*(n-x)!)*p^x*(1-p)^x

where

n= plate appearances =23

p= probability of being hit by pitches = 21/602

x= number of successes=1

then replacing values

P(X=1) = 0.3671 (36.71%)

8 0
3 years ago
Alex made 36 cookies. 1/4 of the cookies were chocolate chip. 1/3 of the cookies were oatmeal. The rest of the cookies were pean
MatroZZZ [7]

Answer:

5

Step-by-step explanation:

number of chocolate chip cookies = 36 × ¼ = 9

number of oatmeal cookies = 36 × ⅓ = 12

36 - 9 - 12 = 15

Alex made 15 peanut butter cookies.

7 0
3 years ago
3.)
kotykmax [81]

Answer:

Let’s find out...

Step-by-step explanation:

21 x 13 = 273

(13 x 20) + (13 x 1) =

260 + 13 = 273

So this one matches

(21 x 10) + 213 =

210 + 213 = 423

Does not match

(30 x 13) - (9 x 13) =

390 - 117 = 273

This one matches

(20 x 10) + (1 x 3) =

200 + 3 = 203

Does not match

5 0
3 years ago
A tree casts a shadow 32 ft long. at the same​ time, the shadow cast by a vertical 8​-ft post is 4 ft long. find the height of t
ale4655 [162]
Hii mate____
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.
.
.________
here's your answer looking for⤵
This a similar triangle problem.
If you consider the two horizontal
sides (shadows) as a ratio 32/4
Consider the corresponding vertical sides
x and 8
32/4= x/8 Cross multiply 
4x= 256
x = 64
Therefore the tree is 64 feet high.
_____
HOPE IT HELPS!! ☺☺☺✌✌
4 0
3 years ago
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