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stich3 [128]
3 years ago
7

Josie is training for a race. The ratio of

Mathematics
1 answer:
jeyben [28]3 years ago
4 0

Answer:

80 to 10

Step-by-step explanation:

You might be interested in
1. Which formula defines the sequence f(1)=2, f(2)= 6, f(3)= 10, f(4)= 14, f(5)= 18?
Natasha_Volkova [10]

Answer:

f(n) =4 + f(n-1) \\for\ n>2

Step-by-step explanation:

Given

f(1)=2\\ f(2)= 6\\ f(3)= 10\\ f(4)= 14\\ f(5)= 18

Required

Determine the formula

First, we need to solve common difference (d)

d = f(n) - f(n-1)

Take n as 2

d = f(2) - f(2-1)

d = 6 - 2

d = 4

Represent each function as a sum of the previous

f(1) = 2

f(2) = 2 + 4 = f(1) + 4

f(3) = 6 + 4 = f(2) + 4

f(4) = 10 + 4 = f(3) + 4

f(5) = 14 + 4 = f(4) + 4

Represent the function as f(n)

f(n) =f(n-1) + 4

Reorder

f(n) =4 + f(n-1) \\for\ n>2

7 0
4 years ago
Factor each trinomial completely.<br> 4x^2 - 25b^2 and x^2 - 81
GenaCL600 [577]

Step-by-step explanation:

4x2 - 25b2

We can solve it by the squares so

(2x - 5b) (2x + 5b)

2) x2 - 81

The same case is here so

(x - 9) (x + 9)

8 0
3 years ago
Which equation represents a proportional relationship? only 1
nadya68 [22]

Answer:

I think its b and c

Step-by-step explanation:

good luck

4 0
3 years ago
Pls can somebody help me ??? Is due today
Inga [223]

Answer:

I think $190,7 cause you have to find the percentages of the taxes and handling fee then add it to her accurate price.

5 0
3 years ago
Read 2 more answers
the second term in a geometric sequence is 12. the fourth term in the same sequencce is 4/3. what is the common ratio in this se
nordsb [41]
Geo is
an=a1r^(n-1)

2nd term is 12
4th term is 4/3

a2=a1r^(2-1)=12
a2=a1r=12

a4=a1r^(4-1)=4/3
a4=a1r^3=4/3

we have
a1r=12 and a1r^3=4/3
(a1r^3)/(a1r)=r^2=(4/3)/12=1/9

1/9=r^2
sqrt oth sides
1/3=r

the common ratio is 1/3
5 0
4 years ago
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