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VARVARA [1.3K]
3 years ago
12

HELP FAST PLEASE!!!!!!

Mathematics
1 answer:
Elodia [21]3 years ago
5 0
1. Not random. Because you are asking people if they like ICE CREAM in a         ICE CREAM shop. 
2. Not random. Because they are serving a small controlled group.
3. Not  random. Because you go shopping at Publix because you like it. 
4. Random. Because you don't choose who is home or not.
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The number of right-handed students in a math class is nine times the number of left-handed students. The total number of studen
nirvana33 [79]
R - Right Handed 
L - Left Handed 

R = 9L ( the number of right handed kids is equal to having 9*number of left handed kids) 
9L + L = 30  ( since total number of people in class is 30) 
10L = 30 
( Divide by 10 both sides )
L = 3 

so... There are 3 Left Handed kids and 27 Right Handed kids ( since R = 9L , R = 9(3) = 27)

Hope this helped!
5 0
2 years ago
Can someone help me understand this ? The app doesn’t understand the equation
butalik [34]

Answer:

c; 1 / (a^12)(b^8)

Step-by-step explanation:

when the exponent is outside a number you multiply the outside exponent by the inside exponent

so far after multiplying exponents you have

a^-12 / b^8

but you must put the 12 on the bottom so that all exponents can be positive

1 / (a^12)(b^8)

6 0
2 years ago
Can someone help me please
snow_tiger [21]

Answer:

Here you go

Step-by-step explanation:

BTW what is meant by point in the last blank?

6 0
3 years ago
Read 2 more answers
In triangle XYZ, angle Y = 45º and angle Z = 60º. If XZ = 4, then what is XY?
Katena32 [7]

Answer:

XY = 4.9

Step-by-step explanation:

Given

XZ= 4

\angle Y = 45

\angle Z = 60

Required

Determine the measure of side XY

To do this, we make use of sine law. This is as follows:

\frac{a}{\sin\ A} = \frac{b}{\sin\ B} = \frac{c}{\sin\ C}

In this case:

\frac{4}{\sin(45)} = \frac{XY}{\sin(60)}

Cross Multiply

XY * \sin(45) = 4 * \sin(60)

XY * 0.7071 = 4 * 0.8660

Make XY the subject

XY = \frac{4 * 0.8660}{0.7071}

XY = \frac{3.4640}{0.7071}

XY = 4.89888276057

XY = 4.9 -- <em>approximated</em>

3 0
3 years ago
Find a 12% tip on a check for $40.
pickupchik [31]

Answer:

Step-by-step explanation:

40(12/100)

480/100

$4.80

3 0
3 years ago
Read 2 more answers
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