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lina2011 [118]
2 years ago
13

Can You Help Me I really don't understand

Mathematics
1 answer:
Lunna [17]2 years ago
6 0

Its A, because a filled in circles means equal to and the arrow is going to the negatives because its less than 15.

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Answer:

19 Lollipops per friend

Step-by-step explanation:

60-3=57\\\\57/3=19

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2 years ago
Read 2 more answers
ASAP in 4 math question!
Zepler [3.9K]

1. - 4 = \frac{x}{9}

=> x = - 36

___________

2. -18 = 6t

=> t = \frac{-18}{6}

=> t = -3

___________

3. x - 18 = -72

=> x = - 72 + 18

=> x = - 54

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4. -18 = x - 15

=> x = -18 + 15

=> x - 3

7 0
2 years ago
The annual rainfall in a certain region is approximately normally distributed with mean 41.4 inches and standard deviation 5.7 i
stich3 [128]

Complete question :

The annual rainfall in a certain region is approximately normally distributed with mean 41.4 inches and standard deviation 5.7 inches. Round answers to the nearest tenth of a percent. a) What percentage of years will have an annual rainfall of less than 43 inches? b) What percentage of years will have an annual rainfall of more than 39 inches? c) What percentage of years will have an annual rainfall of between 38 inches and 42 inches?

Answer:

0.61053

0.66314

0.26647

Step-by-step explanation:

Given that :

Mean (m) = 41.4 inches

Standard deviation (s) = 5.7 inches

a) What percentage of years will have an annual rainfall of less than 43 inches?

P(x < 43)

USing the relation to obtain the standardized score (Z) :

Z = (x - m) / s

Z = (43 - 41.4) / 5.7 = 0.2807017

p(Z < 0.2807) = 0.61053 ( Z probability calculator)

b) What percentage of years will have an annual rainfall of more than 39 inches? c)

P(x > 39)

USing the relation to obtain the standardized score (Z) :

Z = (x - m) / s

Z = (39 - 41.4) / 5.7 = −0.421052

p(Z > −0.421052) = 0.66314 ( Z probability calculator)

What percentage of years will have an annual rainfall of between 38 inches and 42 inches?

P(x < 38)

USing the relation to obtain the standardized score (Z) :

Z = (x - m) / s

Z = (38 - 41.4) / 5.7 = −0.596491

p(Z < −0.596491) = 0.27545 ( Z probability calculator)

P(x < 42)

USing the relation to obtain the standardized score (Z) :

Z = (x - m) / s

Z = (42 - 41.4) / 5.7 = 0.1052631

p(Z < 0.1052631) = 0.54192 ( Z probability calculator)

0.54192 - 0.27545 = 0.26647

6 0
3 years ago
Angles XYZ and PYZ are complimentary. If XYZ= 3x+8 and PYZ= 2x+7, what is the measure of XYZ?
Romashka [77]
Your answer would be 53
8 0
2 years ago
Which of the following graphs represents the function f(x)=x^4-2x^3-3x^2+4x+1
Sloan [31]

Answer:

A function does NOT have two of the same number in your Domain or your X coordinates. If you go left to right you should NOT cross your line in more then one place.

Step-by-step explanation:

3 0
3 years ago
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