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Ksju [112]
3 years ago
11

This graph shows the linear relationship between the time in seconds, x, for Caroline's walk and the distance in meters, y, Caro

line is from her starting point. The graph passes through the point (20,30). According to the graph, how many meters will Caroline walk in exactly one hour?

Mathematics
1 answer:
serg [7]3 years ago
6 0
Caroline will walk 70 meters  in 1 hour.
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Mr. Wallace needs to divide his class or 23 students into 9 groups. Each group can have two or three students. If a is the numbe
IRINA_888 [86]

Answer:

d)  Mr.Wallace can use the following equations:

    a + b = 9

   2 a + 3 b = 23

Step-by-step explanation:

Here, the total number of students = 23

Number of groups = 9

Each group can have 2 or 3 students.

a is the number of  groups of 2.

⇒ Total students in a groups  = a x (Number of  student in each group)

= a x 2 = 2 a

b is the number of groups of 3

⇒ Total students in b groups  = b x (Number of  student in each group)

= b x 3 = 3 b

So, according to the question:

Total number of groups formed = 9

⇒ a + b = 9

Total number of students  = 23

or Number of students in  ( a  group + b group ) = 23

⇒ 2 a + 3 b = 23

Hence, Mr.Wallace can use the following equations:

a + b = 9

2 a + 3 b = 23

6 0
3 years ago
Raoul estimated the difference of 97.23 and 8.3 by rounding each number to the nearest whole. What was Raoul's estimate, and wha
skelet666 [1.2K]

Answer:

Raoul estimated the difference to be: 89

97.23 --> 97

8.3 --> 8

97-8= 89

The actual difference is: 88.93

97.23-8.3 = 88.93

6 0
3 years ago
Goran is participating in a 6-day cross-country biking challenge. He biked for 51, 65, 62, 46, and 62 miles on the first five
zimovet [89]

Answer:

i dont understand?

Step-by-step explanation:

4 0
3 years ago
Can someone please help me with this question?
ryzh [129]

Answer: (3,2)

Step-by-step explanation:

4 0
3 years ago
What is the energy, in joules, of a light wave whose frequency is 5.66× 10^8 Hz ?
Margarita [4]

Energy = Planck's constant * frequency

= 6.626 * 10^-34 * 5.66 * 10^8

= 3.7503 * 10^-25 Joules

4 0
3 years ago
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