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timurjin [86]
3 years ago
9

Evaluate f(x) = 0.5x-4 for x=10

Mathematics
1 answer:
Valentin [98]3 years ago
8 0

Answer:

f=-9

Step-by-step explanation:

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katie collets stamp she has stamps from canada, United Staes,ands Rest of the world in a ratio of 1:1.2:1.5 she has 135 stamps f
lyudmila [28]

Answer:

90 stamps from Canada, 108 stamps from the United States, and 135 stamps from the Rest of the World

Step-by-step explanation:

Since this is a problem of proportion we can use the Rule of three to solve this. We do this by multiplying the diagonal available values and dividing by the third value in order to get the missing variable, which in this case would be the number of stamps in the other country. Like so...

1.5  <=====>  135 stamps

1.2  <=====>  x  stamps (United States)

(1.2 * 135) / 1.5 = 108 stamps (United States)

1.5  <=====>  135 stamps

1  <=====>  x  stamps (Canada)

(1 * 135) / 1.5 = 90 stamps (Canada)

Finally, we can see that Katie had 90 stamps from Canada, 108 stamps from the United States, and 135 stamps from the Rest of the World. All creating a ratio or 1:1.2:1.5

8 0
3 years ago
Decide whether each relation defines y as a function of x. Give the domain and range.
lisov135 [29]
Y=x².

This is te function of a parabola open upward

the domain is all values of x ={x/x∈z}
7 0
3 years ago
The first 5 terms of a sequence are shown below:
nirvana33 [79]

Step-by-step explanation:

To find the formula for the nth term ,

First , find the common difference or common ratio.

Common difference =

T_2-T_1 \\  - 2 - 3 \\  =  - 5

Common ratio =

T_2/T_1 \\  \frac{ - 2}{3}

The common difference applies to the other given numbers for example :

T_3- T_2  =  - 7 - ( - 2) \\  =  - 7 + 2 =  - 5

this proves that it is an arithmetic sequence and the given formula for the nth term of an arithmetic sequence is

T_n =a(n-1)d

Where n = no of terms

a= first term

d= common difference

6 0
3 years ago
When 4 times the number X is added to 12, the result is 8. What number results when two x x is added to 7?
Tomtit [17]

Answer:  9 i think, i don't know hope i helped :)

6 0
3 years ago
Read 2 more answers
Last month Ed ate 9 apples five bananas 4 peaches and 7 oranges find the Ratio of bananas to the total number of fruit then expl
Soloha48 [4]
The ratio is 5:4:7:9. The reason why they didn't write it together is that the  bananas are written in different form.
8 0
3 years ago
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