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lutik1710 [3]
3 years ago
6

If Zach checks his pulse for 2 minutes, what is his rate if he counts 162 beats?

Mathematics
1 answer:
Zielflug [23.3K]3 years ago
8 0
81 beats per minute
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Slope of (-20,9) (14,9)
skelet666 [1.2K]
Y2-y1/x2-x1 is slope so

9-9/14-(-20) so you get 0/34 which means there is no slope since they have the same y (the equation would be y=0x+9 therefore y=9)
Which makes sense since the equation is a straight line
3 0
2 years ago
Leah had 50 stickers. Leah gave 1/2 of the stickers to her sister. Of the amount left, she gave 2/5 to her friend.How many does
julsineya [31]
15 stickers

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7 0
3 years ago
Read 2 more answers
A multiple-choice standard test contains total of 25 questions, each with four answers. Assume that a student just guesses on ea
weqwewe [10]

Answer:

a)  8*88*10⁻⁶ ( 0.00088 %)

b) 0.2137 (21.37%)

Step-by-step explanation:

if the test contains 25 questions and each questions is independent of the others, then the random variable X= answer "x" questions correctly , has a binomial probability distribution. Then

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

where

n= total number of questions= 25

p= probability of getting a question right = 1/4

then

a) P(x=n) = p^n = (1/4)²⁵ = 8*88*10⁻⁶ ( 0.00088 %)

b) P(x<5)= F(5)

where F(x) is the cumulative binomial probability distribution- Then from tables

P(x<5)= F(5)= 0.2137 (21.37%)

7 0
3 years ago
1. Jay said, “The amount of money in my checking account is less than $50.00, but greater than $40.00.” Which statements about t
Pepsi [2]
I don't know the options but I guess it would be something like this:
40,000 < x < 50,000
4 0
3 years ago
PLEASE HELP!! 25 POINTS!! WILL MARK BRAINLIEST!!
Strike441 [17]

Answer:The equation of the parabola is y=18(x−2)2−3

4 0
2 years ago
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