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horrorfan [7]
3 years ago
12

A sprinter runs 100 meters in 11.5 seconds. What is the runners average rate in meters per second?

Mathematics
2 answers:
posledela3 years ago
6 0

Answer:

8.69

Step-by-step explanation:

V=d/t=100/11.5=8.69 m/s

iris [78.8K]3 years ago
3 0

Answer:

8.69565217391 m per sec

8.7 (1dp)

Step-by-step explanation:

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The difference between the squares of two consecutive numbers is 23. what are the two numbers?
Ksju [112]

(x+1)^2-x^2=23

x^2+2x+1-x^2=23

2x+1=23

2x=22

x=11

11^2 = 121

x+1 =12

12^2=144

144-121 = 23

4 0
3 years ago
Use the law of wines to find the value of y. Round to the nearest Tenth
Eva8 [605]

Answer:

y ≈ 2.5

Step-by-step explanation:

Using the Sine rule in Δ XYZ

\frac{sinZ}{XY} = \frac{sinY}{XZ} , substitute values

\frac{sin50}{2} = \frac{sin75}{y} ( cross- multiply )

y sin50° = 2 sin75° ( divide both sides by sin50° )

y = \frac{2sin75}{sin50} ≈ 2.5 ( to the nearest tenth )

4 0
3 years ago
Write an expression that represents the perimeter of the football field. Let x represent the length of the football field. Inclu
dlinn [17]
Expression with parenthesis: = 2 ( l + w)
Expression without parenthesis = 2l + 2w

The property we used is known as "Distributive Property"

Let, width = w
Length = w + 70

Perimeter would be: P = 2(w+70+w)
p = 2(2w+70)
p = 4w + 140

Hope this helps!
6 0
3 years ago
3/4 is less than or equal to 1/2+n
Bezzdna [24]

Answer:

no

Step-by-step explanation:

3/4=0.75

1/2+n=0.5

3 0
2 years ago
Read 2 more answers
Find the 79th term of the following arithmetic sequence. 5,11, 17, 23...
NikAS [45]

Answer:

the answer is 479.

Step-by-step explanation:

to make it simpler, pretend you start from 1. 1,7,so on. multiply six by 79, to get 474. but because you are starting from 5 and not 1, you have to add 5 on.

sorry im super bad at math so this might be wrong

4 0
2 years ago
Read 2 more answers
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