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aleksandrvk [35]
2 years ago
13

Easy one - giving brainly if correct - show work.​

Mathematics
1 answer:
astra-53 [7]2 years ago
6 0

Answer:

47. 1  5/8

48. 1  1/12

Step-by-step explanation:

<em>47. </em>

<em>First, convert the denominators to be the same.</em>

8  1/2 minutes, Ruby's mile time, can be converted to 8  4/8.

<em>Then subtract.</em>

8  4/8 - 6  7/8  = 1  5/8

<em>48.</em>

<em>Make sure the denominators are the same. Both denominators can be multiplied by 3 or 4 to become 12.</em>

1  1/4 can be multiplied by 3 to get 1  3/12. And 1  1/3 can be multiplied by 4 to get  2  4/12.

<em>Then subtract.</em>

2  4/12 - 1  1/3 = 1  1/12

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Collette wanted to know if there was a difference in favorite food types among students at her large high school. She took a ran
AleksandrR [38]

Answer:

(29-23)²/23 + (16-23)²/23 + (19-23)²/23 + (28-23)²/23

Step-by-step explanation:

Given :

n(American) = 29

n(Chinese) = 16

n(Mexican) = 19

n(Italian) = 28

Expected value = (29 + 16 + 19 + 28) / 4

Where, 4 = sample size

Expected value, E = 23

χ² = (Observed value - Expected value)² / expected value

χ² = (29-23)²/23 + (16-23)²/23 + (19-23)²/23 + (28-23)²/23

3 0
2 years ago
HELP PLEASEEEEEEEEE.........!!!!!!!!!!!!!!!!​
den301095 [7]

Answer:

x = 65

Step-by-step explanation:

Angles are equal because of the vertical angle thm

2x + 15 = 145

2x = 130

x = 65

7 0
2 years ago
Can y’all help me on question 5?!
OleMash [197]

Answer:

6 : 45 = 2 : 15

Step-by-step explanation:

2/15 or 2:15

7 0
2 years ago
Read 2 more answers
Solve the equation 6x+3y=15for y what does y equal if x=2 if x=5
avanturin [10]
6x+3y=15
6*2+3y=15
12+3y=15
      3y=3
        y=1

6x+3y=15
6*5+3y=15
30+3y=15
      3y=-15
        y=-5

The answers is y=1 & -5

3 0
3 years ago
PLEASE HELP ME, MY MOM WILL KILL ME IF I DONT HAVE THEESE ASSIGNMENTS DONE
Schach [20]

Answer:

A. 2

B. 10/3

C. 8/3

D. 2/3

Step-by-step explanation: put the whole #and make it into a fraction like this e.g.

6/1 • 1/3 = 6/3 simplifies to 2

3 0
3 years ago
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